Please register or log in.
  • (187 pages)
  • first
  • prev
  • 2
  • 3
  • 4
  • 5
  • 6
  • next
  • last
Advertisements in this category Notify me when new ads are submitted in this category
  Title ascendingdescending Consumption ascendingdescending Broken ascendingdescending Price ascendingdescending Picture
add to favorites Analysis of the causes of the quality problems of cutting sheets 5.00 l/mile No $ 5.00
No Picture
First, the raw material problem The aluminum flat cutting disc is a complex system composed of a variety of main and auxiliary raw materials, the main materials are abrasives and bonding agents, and the auxiliary materials include fillers, reinforcing materials and the like. 1. Abrasive problems: Abrasives are the main substances in the 5 inch resin cutting disc for metal for grinding. At present, the quality of abrasives on the market is mixed, and the main performances are as follows: 1) The chemical composition of the abrasive is often qualified, but the physical properties are poor, such as hardness, strength, self-sharpness, crush resistance, thermal stability, hydrophilicity, etc.; 2) The particle size composition of the abrasive is chaotic, which is quite different from the standard. 2, the binder problem: In the dicing sheet, the abrasive particles are bonded together by a bonding agent, and the performance of the bonding agent directly affects the performance and quality of the dicing sheet. 1) The quality of the resin is unstable, and the free phenol content in the resin is high or low. The so-called free phenol is phenol remaining in the resin, the molecular formula is C6H5OH, long-term heating can crack the hardened resin, affecting the strength of the cutting piece; 2) The resin powder and urotropine are not evenly mixed. The scientific name of urotropine is hexamethylenetetramine ((CH2) 6N4). As a hardener for the resin, the amount of urotropine is insufficient, and the resin is hardened. Completely, affecting the strength and hardness of the cutting piece; if the content is too high, the excess urotropine is not combined with the resin, and is decomposed and volatilized during the hardening process, so that the pores of the cutting piece are increased, and the strength and hardness are lowered. The resin powder and urotropine are mixed unevenly, and the consequence is that the urodose content is too high or too low; 3) The particle size of the binder is too coarse. It is generally considered that the particle size of the binder is fine, which is advantageous for uniform distribution of the binder and favorable contact of the hardener. If the particle size is too coarse, the molding material is not easily mixed uniformly, which affects the hardness and strength of the cutting piece. Even for the coarse-grained resin fiber cutting disc Chinese supplier sheet and the enamel-shaped cutting sheet, the size of the binder (resin powder) selected should be finer than 320#. A fine-grained dicing sheet product is produced with a particle size requirement of a few microns.
add to favorites Analysis of problems inside the cutting piece l/mile No $
No Picture
Unbalanced The reason is as follows: the material is not evenly scraped; the 6 inch es cutting disc is not parallel when the pressing type is out of tolerance; the geometrical precision is not good during processing; the thickness of the horn is inconsistent, the spring is hard and soft, the turntable is not stable, and the car has collision. Prevention method: The material should be evenly scraped; pay attention to check the accuracy of the mold, press and trolley; strictly operate and ensure the accuracy; the thickness of the horn is consistent, the spring should be checked frequently, pay attention to check the stability of the turntable, and control the speed of the car. Hardness does not match Cause: The formula is incorrect; the ingredients are not correct; the forming single or pressed thickness does not meet the tolerance; the temperature does not conform to the process; the raw materials are unqualified. Prevention method: Pay attention to the correctness of the formula; strengthen the operation, pay attention to the inspection; strengthen the operation, pay attention to the inspection; control the firing process and the kiln location; strengthen the inspection of raw materials entering the plant. 14 inches cutting disc foaming Causes: the binder has low refractoriness; the binder is added; the mismatching binder; the firing temperature is too high; the humectant is used in too much wrong amount; the kiln is not suitable. Prevention method: adjust the ratio; the binding agent should be accurate; strengthen the inspection to prevent mismatching; control the firing curve; strictly increase the amount; Burst Cause: The cooling rate during cooling is too fast; the temperature of the kiln is too high. Prevention method: control the appropriate cooling rate; control the temperature of the kiln, not too high. Black heart Cause: The sand is too fine; the kiln is too dense; the atmosphere is not good; the ingredients are wrong; the formula is problematic; the temperature is high; the humectant is wrong. Prevention method: generally use coarse sand; control density; should maintain oxidizing atmosphere; strictly check to avoid errors; adjust formula; control high temperature point and combustion chamber temperature; avoid mistakes. Coarse grain low price disc for metal cover Cause: The bond has low refractoriness and high fluidity; there are too many pieces per kiln. Prevention method: Adjust the ratio of the binder, and then put it into production after verification; control the number of tablets per tablet. Not enough size after burning Cause: The blank is not enough; the temperature is high; the quality of the raw materials is not good; the number of kiln is more than the specified. Prevention method: Appropriate increase of retention; control of temperature; strict inspection of incoming raw materials; strict process discipline. Turn waste Cause: The firing temperature is high or low; the mixing is uneven; the unbalanced grams are large; the binder is used incorrectly; the binder is mismatched. Prevention methods: control temperature and firing location; strengthen mixing operation; improve balance performance; strengthen self-test to avoid errors. Iron spot Cause: The quality of the raw materials is poor; after the equipment is overhauled, the cleaning is not good; the firing temperature is too high. Prevention method: Strict inspection; after strict cleaning, remix; control the firing temperature.
add to favorites History of diamond sawing   No  
No Picture

Diamond saw blades are one of the diamond products and are the most widely used diamond products in the world. Despite the record of diamond saw blades for sawing stone in 1854, the truly effective diamond circular saw blade was designed by Frenchman Jacquinin 30 years later and was used for the actual cutting of stone for the first time in 14 years.7'' cut off disc for metal The abrasives used at the time were all natural diamonds (diamonds). Initially, large particles of natural diamond were inlaid into the cast steel insert by hand, and the insert was attached to the saw blade substrate for cutting. But the effect is not satisfactory. In the late 1930s, the diamond block powder metallurgy manufacturing technology that mixed metal powder with diamond and sintered was developed, and the design and manufacturing technology of the diamond saw blade has made great progress.

 Since the first synthetic diamond was successfully synthesized, the diamond saw blade design and manufacturing technology has been continuously improved. At the end of the last century, China's diamond saw blade design and manufacturing technology, along with the rise of stone processing industry, architectural decoration industry and road and bridge construction, has also achieved extraordinary development, especially since 1993, due to rising raw material prices, market competition has intensified. In order to reduce costs and improve product quality, diamond saw blade manufacturers have increased investment in scientific research, and various new theories and new technologies have emerged. The design and manufacture of diamond saw blades mainly include sawtooth bond design, sawtooth shape or structural design, and saw blade manufacturing technology. Looking back on the development of diamond saw blades, 7'' cut off disc for metal the design and manufacturing technology of diamond saw blades has obtained a lot of research results.

add to favorites The reason that affects the uneven rotation of the grinding wheel   No  
The manufacturing process of the fast working grinding wheel is more complicated. In the process of production, the production must be carried out in strict accordance with the process. Otherwise, the error process of the grinding wheel may be caused, and the grinding wheel manufacturer introduces some reasons for the imbalance of the grinding wheel. The imbalance of the fast working grinding wheel is mainly caused by the inaccurate manufacture and installation of the grinding wheel, which makes the center of gravity of the grinding wheel not coincide with the rotary shaft. The harm of the imbalance of the fast working grinding wheel is mainly manifested in two aspects. On the one hand, when the grinding wheel rotates at high speed, it causes vibration, which is easy to cause polygonal vibration marks on the surface of the workpiece. After the fast working grinding wheel is calcined and solidified, its size, shape and positional accuracy of each surface are not up to the technical requirements of use. It must be turned, ground and ground. Due to objective technical reasons, most of the domestic and foreign The knife bowl is turned. The country generally advocates energy conservation and emission reduction. We must not forget this point when burning ceramic fast working grinding wheel. Low-temperature firing can shorten the time and facilitate rapid firing, which has a significant effect on energy conservation.
add to favorites Cutting piece production waste analysis l/mile No $
No Picture
First, mixed Causes: There are impurities in the abrasive and binder; impurities are mixed in the mixture and molding. Prevention method: strengthen raw material inspection; strengthen operation to prevent impurities from entering. Second, uneven organization Causes: the flat abrasive cutting disc is uneven with binder points; dextrin iron oxide point, the distribution of filler is uneven; the foam of the pouring product is not completely eliminated, the suspension performance of the slurry is poor; the molding material is too dry abrasive binder separation or coarse and fine particles Separate the home; the situation is off the sand; the resin EN12413 cutting discs sticks to the bottom plate and the mold cover. Prevention method: strictly according to the mixing process; the binder should be sieved into the pot, the dextrin can not be damp; the amount of starch is increased appropriately, and the water discharge speed after pouring is increased; the dry material is sieved, the dry explosive is mixed well, and the mixture is mixed. Master dry humidity; use paraffin oil and dry sand. Third, large grain Cause: The abrasive is unqualified, the container is not cleaned, and the operation is improper. Prevention methods: strengthen raw material inspection, clean up containers, mixing equipment, from fine to coarse mixing. Fourth, the outer diameter crack Cause: The cooling process is too fast; the temperature fluctuation in the firing is too large; the temperature in the middle and outer diameter of the firing is too high; the drying temperature is too fast; the molding is scratched, and the mold is removed. Prevention method: Strictly control the temperature rise curve and dry temperature curve; check the mold to avoid blank scratches. Fifth, the aperture crack Cause: The heating rate is too fast, the heart stick is too bad, and it is shocked when the mold is unloaded. Prevention method: Strictly grasp the temperature curve, check the heart stick, and avoid the earthquake when the mold is unloaded. Six, plane crack Cause: The cooling rate is too fast, the temperature of the kiln is too high, the semi-finished product is shocked, and the number of semi-finished products is too high. Prevention method: Strictly control the temperature and temperature curve of the kiln to avoid the shock of the unfinished product and control the height of the screw. Seven, cup-shaped inner wall crack Cause: The core radius of the mold is too small and the quality of the molding material is not good. Prevention method: Finish the mold and keep the molding material at the proper temperature strength.
add to favorites What are the safety issues that should be noted when using the115*1*22 cutting disc? 115.00 l/mile No  
No Picture
115*1*22 cutting disc and4 1/2 super thin cutting disc are commonly used cutting blades. So, in order to pay attention to safety, what safety problems should you pay attention to when using them? The following is the aurora abrasives with 115 * 1 * 22 cutting disc as an example to give you some notes: (1) Apply the hand to turn the cutting piece before starting the machine to check whether the cutting piece is cracked, whether the protective cover and each part are normal. (2) Excessively large and too long workpieces shall not be cut on the cutting piece. The workpiece to be ground must be stable and must not be ground by hand. (3) Protective glasses must be worn for cutting. Gloves are not allowed. It is not allowed to use cotton yarn or cloth to cover the workpiece for cutting. (4) The operator should stand on the side of the polishing sheet when cutting, and must not operate on the positive cutting piece. The same cutting piece is not allowed to cut at the same time by two people. (5) When replacing the new cutting piece, the total power supply should be cut off, and the shaft end nut gasket should not be pressed too tightly to avoid fracturing the cutting piece. (6) After cutting, the power should be turned off. The powder in the dust cover should be removed frequently, and the lubricating oil of the spindle should be replaced regularly.
add to favorites The steps that the grinding wheel needs to know to sharpen the crescent   No  
No Picture
thin flat cutting disc
The steps for grinding the crescent in the grinding wheel are as follows:
1 Hand-held drill bit makes the main cutting edge basically horizontal to ensure the right edge angle is appropriate. The outer edge of the outer straight edge is not allowed to be tilted.
2 When starting to sharpen, the drill bit should be fed slowly and smoothly forward and horizontally, and the back should be ground to form a circular arc. The radius of the arc and the length of the outer edge should be guaranteed. If the fillet radius of the grinding wheel is less than the value of the radius of the arc, the drill should also be slightly swung in the horizontal plane to obtain the desired radius of the arc.
3 The drill bit must not swing up and down in the vertical plane, or the sintering shaft rotates, otherwise the chisel edge becomes S-shaped, the chisel angle of the chisel edge becomes smaller, and the arc shape is also difficult to control symmetry.
4 When turning the drill bit 180° on the other side of the sharpening, special attention should be paid to maintaining the symmetry of the arc and the tip of the drill.
add to favorites Grinding wheel grinding process overview   No  

The grinding wheel is a grinding cutting tool that consists of a number of small, hard abrasive particles and a bonding agent. The abrasive particles are directly responsible for the cutting work and must be sharp and have high hardness, heat resistance and certain toughness. Commonly used abrasives are alumina (also known as corundum) and silicon carbide.China supply 7" cut off disc Alumina abrasives have high hardness and good toughness and are suitable for grinding steel. Silicon carbide abrasives are harder, sharper, and have better thermal conductivity, but are brittle and suitable for grinding cast iron and hard alloys.

Due to the different thickness of the grinding wheel, the surface roughness and processing efficiency of the workpiece after processing are different. The coarse abrasive grains are used for rough grinding, the fine abrasive grains are suitable for fine grinding, the coarser the abrasive is, the smaller the grain size is.

The binder acts to bond the abrasive. Ceramic binders are commonly used, followed by resin binders. Different binder materials affect the corrosion resistance, strength, heat resistance and toughness of the grinding wheel.

The harder the abrasive grain bond is, the less likely it is to fall off the grinding wheel. The hardness of the grinding wheel, that is, the hardness of the grinding wheel, refers to the difficulty of the abrasive grains on the surface of the grinding wheel falling off under the action of external force. Easy to fall off is called soft, otherwise it is called hard. The hardness of the grinding wheel and the hardness of the abrasive are two different concepts. The surface of the workpiece to be ground is soft, and the edge (edge) of the abrasive grain is not easy to wear, China supply 7" cut off discso that the abrasive grain can be used for a longer period of time, that is, the grinding wheel (harder wheel with higher hardness) can be firmly bonded. Conversely, a grinding wheel with a low hardness is suitable for grinding workpieces with high hardness.

The grinding wheel works under high speed conditions. In order to ensure safety, it should be inspected before installation, and there should be no defects such as cracks. In order to make the grinding wheel work smoothly, the dynamic balance test should be carried out before use.

After the grinding wheel has been working for a certain period of time, the surface gap will be blocked by the grinding debris, the sharp angle of the abrasive will be blunt, and the original geometry will be distorted. It must therefore be trimmed to restore cutting power and the correct geometry. The grinding wheel needs to be trimmed with a diamond pen.

Grinding is a method of cutting a workpiece with a grinding wheel as a cutting tool on a grinding machine. The characteristics of this method are:

(1) Since the grinding wheel itself has high hardness and heat resistance, the grinding can process materials with high hardness, such as hardened steel and hard alloy.
(2) The characteristics of the grinding wheel and the grinding machine determine that the grinding process system can make uniform micro-cutting, generally ap=0.001~0.005mm; the grinding speed is very high, generally up to v=30~50m/s;
the grinding machine has good rigidity; Hydraulic drive, so grinding can economically achieve high machining accuracy (IT6~IT5) and small surface roughness (Ra=0.8~0.2μm). Grinding is one of the main methods of finishing parts.
(3) The temperature in the grinding zone is high due to severe friction. This can cause stress and deformation of the workpiece and even burn the surface of the workpiece. Therefore, a large amount of coolant must be injected during grinding to reduce the grinding temperature. The coolant can also act as chipping and lubrication.
(4) The radial force during grinding is large. This causes the machine-grinding-workpiece system to retreat so that the actual depth of cut is less than the nominal depth of cut. Therefore, when the grinding is about to be completed, the knife should not be used for light grinding to eliminate the error.
(5) After the abrasive grain is blunt, the grinding force also increases, causing the abrasive grain to break or fall off, and the sharp edge is re-exposed. This characteristic is called "self-sharpness". Self-sharpening makes grinding at a certain time. The internal energy can be carried out normally, but after a certain working time, manual trimming should be carried out to avoid the vibration, noise and damage to the surface quality of the workpiece caused by the increase of the grinding force.

add to favorites Requirements for use of cutting blades during work 125.00 l/mile No $ 125.00
No Picture
A guard must be provided at the opening for the trimming of the flat cutting disc on sale. To prevent the danger caused by flying particles and sparks. A combined or welded blade guard having a joint strength or weld strength that is not less than the strength of the blade guard member. The inner wall of the outer member of the dicing blade for working speeds higher than 80 m/s should be provided with a buffer material layer that absorbs impact energy, such as polyurethane plastic, rubber, and the like. The spindle of the grinding machine should have a marking of the direction of rotation. The marking should be obvious and can be stored for a long time. A protective baffle shall be provided at both ends or around the surface grinder table to prevent the workpiece from flying out. Grinding machines with electric, pneumatic or hydraulic clamping workpieces shall be provided with interlocking means, ie the grinding shall be stopped at the same time when the clamping force disappears. Grinding machines that use grinding fluids should be provided with a splash guard to prevent the grinding fluid from splashing onto the operator and the surrounding ground. Grinding machines for dry grinding should be equipped with a vacuum cleaner.  The cutting machine should be specially staffed. If the personnel of the unit are not going to grind the object on the 125*1*22 EN12413 cutting disc, they must be authorized by the full-time responsible person and strictly abide by the safety operation rules. It is strictly forbidden to use the cutting machine without the consent of the responsible person.  The cutting machine is forbidden to be installed in the vicinity of the equipment and operators or in the places where people often pass. Generally, the larger workshop should be equipped with a dedicated cutting machine room. If it is not possible to set up a dedicated cutting machine room due to the limitation of the plant topography, a protective baffle of not less than 1.8 m height should be installed on the front side of the cutting machine, and the baffle plate is required to be firm and effective. The cutting piece spindle should be regularly inspected for the installation of the cutting piece, and there is a bump phenomenon that is not allowed to be used. All cutting disc chucks must be inspected regularly and should be repaired or replaced in any of the following cases. A. Unevenness on the pressing surface. B. Excessive wear in diameter or thickness. C. Loss of precision (yaw). D. Balance block thread damage. E. Damage to the compression screw joint. After the cutting piece damage accident occurs, it is necessary to check whether the cutting disc for stainless steel protective cover is damaged, whether the cutting piece chuck is deformed or unbalanced, and the cutting piece spindle end thread and the pressing nut are used before being qualified. The dust removal device of the grinding machine should be inspected and repaired regularly to maintain its dust removal capacity.
add to favorites Cutting piece storage l/mile No $
No Picture
flat abrasive cutting disc storage use management standards purposes: Standardize cutting discs and grinding machinery standards, so that internal control can be based on standards, and finally meet the requirements of safe use. Scope: This standard applies to all cutting blades and grinding machines of our company. resin EN12413 cutting discs handling and storage precautions 1. During the process of handling and storing the cutting piece, it should be stacked and placed in a flat position. It should not be inclined and pressed for a long time. The stacking height should not exceed 1 meter. The cutting piece should not be subjected to strong vibration and impact, or it will cause cracks. Broken and nicked gaps leave hidden dangers for the use of cutting blades. 2. Implement the principle of advanced use of the cutting piece to ensure the best use period of the cutting piece. It must be completely packaged and transported to avoid collision. It should not be exposed to moisture for a long time, and it should not be in contact with alkali. 3. Avoid direct contact with the ground and must be stacked off the ground with a moisture-proof wooden pallet. 4. Implement the principle of advanced first-class use to ensure the best use period of products. 5. All cut pieces are fragile items, should be carefully handled to prevent falling or collision, and it is not allowed to roll the cutting piece. Vehicles with pneumatic tires should be used when transporting vehicles. 6. The dicing sheet should be used within the validity period. The resin and rubber bond dicing sheet must be subjected to the slewing test after one year of storage. Only qualified persons can use it.
add to favorites How to place the specifications of the super thin 115 cutting disc ? l/mile No  
No Picture
super thin 115 cutting disc should be properly placed for use in order to be used better. And 4 1/2 super thin cutting disc same, So how do we usually place them when they are placed? It should be placed separately according to specifications. The storage area should be marked. In order to avoid confusion and errors. Place location and setting method. Larger diameter and thicker grinding wheels are placed upright or slightly inclined. Thinner and smaller grinding wheels should be placed flat. However, the vertical height should not exceed 600 mm. The height of the rubber or resin sheet grinding wheel should not exceed 20 mm. And placed a flat iron plate on top of each other. It can prevent the grinding wheel from being deformed or broken. Small diameter grinding wheels can be stringed together for storage. Shaped cups and butterfly-shaped shaped grinding wheels should be placed with the bottom facing one next, but not too high. Both rubber and resin are aging. In the transportation and storage of long-distance abrasive tools, the cutting sheet manufacturers must pay attention to the following matters in order to avoid damage to the abrasive tools during transportation and storage. Use wooden boxes and wicker baskets for long-distance transportation and properly package them. Separate the abrasives with soft materials such as straw or sentence. To prevent collision and stacking during handling, stacking should be stable and ceramic abrasives should not be placed in wet or frozen places. Rubber grinding tools are not easy and come into contact with oil. Resin abrasives, not in contact with alkali. Otherwise it will reduce the strength of the abrasive. That is the grinding ability. Store in a dry place at room temperature no less than 5 °C.
add to favorites Coating difference of stainless steel cutting disc   No  
No Picture
Stainless steel materials (pipes, profiles, etc.) are difficult to machine materials, but their characteristics are not very hard, mainly because of the strong adhesion of stainless steel, the chips are easy to adhere to the serrations of the saw blade, which deteriorates the cutting conditions and accelerates the bluntness of the saw blade. Speed ​​is therefore classified as difficult to machine. High-speed steel saw blade - titanium coating technical parameters: Coating thickness: approx. 5 μm Surface hardness: approx. 2200-2400 HV Oxidation temperature: 600 ° C Friction coefficient: 0.55 2, surface chromium nitride alloy coating (seven colors): This coating is more wear-resistant than ordinary coatings when cutting stainless steel and alloy steel and materials, reducing the resistance under high-speed action, thereby extending the saw The life of the sheet and the stability under long-term action. And adding cobalt to the saw blade can effectively improve the stability, hardness and wear resistance of the saw blade. Increasing the cobalt content also reduces the coefficient of friction between the saw blade and the workpiece.12 inches cut off wheel Its durability is 1 to 2 times that of ordinary high speed steel. This saw blade is especially suitable for sawing, cutting, cutting and milling of stainless steel pipes, bars and profiles. When it is used to process ordinary steel, aluminum alloy, plastic, wood and other materials, the effect is also obvious. After cutting, the section has less burr, the saw blade has good toughness and long sawing life. 3. Nitrided coating: after steam treatment, the surface of the saw blade forms an oxide layer (Fe3O4). This saw blade has good surface smoothness and helps to enhance the self-lubricating ability of the saw blade. The phenomenon of living can be avoided to a certain extent, the ability to cool and absorb is better, but the number of cutting is relatively small compared to other coated saw blades. This is the most commonly used saw blade. High speed steel saw blade - oxidation coating technical parameters: Coating thickness: about 5-10 microns Surface hardness: about 900HV Friction coefficient: 0.65 4. Purple-blue coating: The saw blade treated with multi-layer PVD coating achieves a very low coefficient of friction, suitable for fine processing at high cutting speed and high feed rate, and can significantly reduce waste. Bonding on the blade. Suitable for very hard metal material cutting, copper alloy cutting, titanium alloy cutting, and material cutting with particularly frequent bonding. The extremely high surface hardness allows the saw blade to be cut at a high speed. Compared with other uncoated saw blades, the feed rate can be increased by 100%, which increases the life of the saw blade. This saw blade makes the cutting surface very smooth and the saw blade is more wear-resistant, so the cutting speed should be increased by 100%. High speed steel saw blade - purple blue coating technical parameters: Coating thickness: about 5 microns Surface hardness: about 3000-3300HV Oxidation temperature: 450°C Coefficient of friction: 0.25
add to favorites Coating difference of stainless steel cutting disc   No  
No Picture
Stainless steel materials (pipes, profiles, etc.) are difficult to machine materials, but their characteristics are not very hard, mainly because of the strong adhesion of stainless steel, the chips are easy to adhere to the serrations of the saw blade, which deteriorates the cutting conditions and accelerates the bluntness of the saw blade. Speed ​​is therefore classified as difficult to machine. High-speed steel saw blade - titanium coating technical parameters: Coating thickness: approx. 5 μm Surface hardness: approx. 2200-2400 HV Oxidation temperature: 600 ° C Friction coefficient: 0.55 2, surface chromium nitride alloy coating (seven colors): This coating is more wear-resistant than ordinary coatings when cutting stainless steel and alloy steel and materials, reducing the resistance under high-speed action, thereby extending the saw The life of the sheet and the stability under long-term action. And adding cobalt to the saw blade can effectively improve the stability, hardness and wear resistance of the saw blade. Increasing the cobalt content also reduces the coefficient of friction between the saw blade and the workpiece.12 inches cut off wheel Its durability is 1 to 2 times that of ordinary high speed steel. This saw blade is especially suitable for sawing, cutting, cutting and milling of stainless steel pipes, bars and profiles. When it is used to process ordinary steel, aluminum alloy, plastic, wood and other materials, the effect is also obvious. After cutting, the section has less burr, the saw blade has good toughness and long sawing life. 3. Nitrided coating: after steam treatment, the surface of the saw blade forms an oxide layer (Fe3O4). This saw blade has good surface smoothness and helps to enhance the self-lubricating ability of the saw blade. The phenomenon of living can be avoided to a certain extent, the ability to cool and absorb is better, but the number of cutting is relatively small compared to other coated saw blades. This is the most commonly used saw blade. High speed steel saw blade - oxidation coating technical parameters: Coating thickness: about 5-10 microns Surface hardness: about 900HV Friction coefficient: 0.65 4. Purple-blue coating: The saw blade treated with multi-layer PVD coating achieves a very low coefficient of friction, suitable for fine processing at high cutting speed and high feed rate, and can significantly reduce waste. Bonding on the blade. Suitable for very hard metal material cutting, copper alloy cutting, titanium alloy cutting, and material cutting with particularly frequent bonding. The extremely high surface hardness allows the saw blade to be cut at a high speed. Compared with other uncoated saw blades, the feed rate can be increased by 100%, which increases the life of the saw blade. This saw blade makes the cutting surface very smooth and the saw blade is more wear-resistant, so the cutting speed should be increased by 100%. High speed steel saw blade - purple blue coating technical parameters: Coating thickness: about 5 microns Surface hardness: about 3000-3300HV Oxidation temperature: 450°C Coefficient of friction: 0.25
add to favorites Cutting sheet installation process considerations l/mile No $
No Picture
One of the most commonly used machines in the flat abrasive cutting disc machinery factory. Whether it is installed properly or not, it meets the safety requirements; whether it is used correctly or not, it is in compliance with the safe operating procedures. These problems are directly related to the personal safety of each employee, so the actual use must cause us to pay enough attention. Positioning problem Where to install the cutting machine, we must first consider the problem in the installation process, we can only do other work if we choose a reasonable and suitable position. The cutting machine is forbidden to install directly facing the nearby equipment and operators or often somewhere in the past. Generally, the larger cutting workshop should be equipped with a dedicated cutting machine room. If it is really impossible to set up a special cutting machine room due to the terrain limitation of the plant, the front side of the cutting machine should be installed with a height of not less than 1.8m, and the baffle is required to be firm and effective. Balance problem The unbalance of the cutting piece is mainly caused by the inaccurate manufacture and installation of the cutting piece, which causes the center of gravity of the cutting piece to not coincide with the rotary axis. The imbalance causes the damage mainly in two aspects. On the one hand, when the cutting piece rotates at high speed, it causes vibration, which is easy to cause polygonal vibration marks on the surface of the workpiece. On the other hand, the imbalance accelerates the wear of the spindle vibration bearing, and in severe cases, the cutting piece is caused. Cracked and even caused an accident. Therefore, it is required that the sand should be statically balanced after the chuck is installed, and the static balance should be repeated after the shaping of the cutting piece or the work is found to be unbalanced. The matching problem matching problem mainly refers to the problem that the chuck and the cutting piece are installed. According to the standard requirements, the diameter of the cutting disc chuck shall not be less than 1/3 of the diameter of the installed sand office building, and the new cutting piece shall be replaced when the cutting piece is worn to a diameter larger than the diameter of the chuck by 10 mm. This will save a chuck cutting piece matching problem, otherwise there will be such a situation, "large horse-drawn car" caused waste of equipment materials; "small horse-drawn cart" does not meet the safety requirements, easily causing personal accidents. Therefore, the chuck and the cutting piece are reasonably matched, on the one hand, the device can be saved, and the material can be cut; on the other hand, it meets the requirements of safe operation. In addition, a diameter of 2 mm larger than the diameter of the chuck and a thickness of 1 mm to 2 mm should be added between the cutting piece and the chuck. Protective problem The main protective device of the protective cover cutting machine, its function: When the cutting piece is damaged due to work, it can effectively cover the pieces of the cutting piece to ensure the safety of personnel. The shape of the cutting piece shield is round and square, and the maximum opening angle is not allowed to exceed 90°; the material of the protective cover is not less than 415N/mm2 steel. When replacing a new cutting piece, the protective cover should be installed firmly and reliably, and the protective cover should not be dismantled or discarded. One of the main protective accessories for the screen cutting machine, the opening above the water level of the main shaft of the protective cover is greater than or equal to 30 (this device must be provided. Its main function is to cover the grinding process from flying, so as not to hurt the operator. It is installed on The front end of the protective cover shall be wider than the width of the resin EN12413 cutting discs cover, and the protective cover shall be firmly fixed. In addition, the clearance between the circumferential surface of the cutting piece and the baffle shall be less than 6 mm. One of the commonly used accessories for the bracket problem cutting blade cutting machine, according to the cutting blade diameter of 150mm or more, the cutting machine must be provided with an adjustable bracket. The distance between the cutting piece and the bracket should be less than 1/2 of the minimum shape of the workpiece to be ground, but the maximum should not exceed 3 mm. Grounding Problem The cutting machine uses a power line, so the device housing must have good grounding protection. This is also one of the important factors that cause accidents.
add to favorites China cuts off the disc to prevent the rupture of the cutting blank   No  
No Picture

Reasonable arrangement of machining process

1) The size of the wire-cut workpiece blank should be determined according to the size of the part, and should not be too small. In general, the pattern should be located in the middle of the blank or at a position far from the edge of the blank and not easily deformed. Usually, the pattern should be taken to the blank margin of more than 10 mm;
2) Where a large cavity or a narrow and complex punch is used, the traditional solid sheet habit is changed when preparing the blank. Large frame cavity, narrow and long cavity and other easily deformable parts, the middle part should be hollowed out. In this way, the condition in the surface is improved when quenching, the temperature difference is small, the generated stress is small, and the volume to be cut at the time of cutting is small, and the stress is balanced and not damaged;
3) In the case where the mold is allowed to use, China cut off disc the corner of the large frame-shaped cavity part should be appropriately increased, or the blanking point should be drilled before the line cutting to alleviate the phenomenon of stress concentration;
4) For the punched part, before the quenching, the threading hole of the starting point of the shape should be drilled in the bump blank, so that the workpiece maintains the internal stress balance and is not damaged during cutting, so as to avoid cracking deformation from the outside of the material.

Optimize the process plan of wire cutting and select reasonable process parameters

1) The traditional habit of changing the cutting position in one place is the coarse and fine secondary cutting, so that the deformation amount after the first rough cutting is corrected in time in the fine cutting. Generally,China cut off disc the cutting amount during fine cutting should be determined according to the amount of deformation after the first cutting, and generally takes about 0.5 mm. This method is often applied to parts with complex shapes that are bound to be deformed or molds that require high precision and small clearance;
2) The habit of changing the two-point clamping is single-point clamping, so that the deformation during the cutting process can be freely stretched, and the interference of the two-point clamping on the deformation is prevented, but it should be noted that the reasonable part of the single-point clamping is usually at the end program. Where. The deformation produced in this way only affects the scrap portion and avoids the influence on the molded portion;
3) For the easily deformed cutting parts, the starting point of the cutting, the program direction and the clamping position should be arranged according to the shape characteristics of the parts to reduce the deformation amount. Generally, the starting point of the line cutting should be set in a flat, finished or incompletely affected part of the workpiece.
add to favorites Inspection of the cutting piece before it is installed 125.00 l/mile No $ 125.00
No Picture
Before installation, use the sound to visually check for possible damage or damage to the flat cutting disc on sale and check if the speed between the machine and the cutting piece matches. Should do: 1. Visual inspection All cutting pieces must be visually inspected before use. Do not use if damaged. 2. Sound inspection (tapping inspection): The ceramic bond cutting sheet should be checked for sound before use. If the 125*1*22 EN12413 cutting disc has no crack, it will make a crisp sound, and if it is, it will make a muffled or dull sound. 3. Verify that the machine speed is consistent with the highest safe use speed indicated on the cutting blade. Not allowed: 1. Install the cracked cutting piece into position on the axle. 2. Exceeding the maximum speed defined by the cutting piece. Cutting piece installation Proper cutting piece mounting in place steps are extremely important for the safe and effective use of the cutting piece, so it must be ensured that the person performing the cutting piece mounting in place has a rather professional level of practical operation. Should do: 1. The spindle of the cutting piece must be straight, smooth and clean, and the size of the spindle must be within the tolerance. 2. The cutting piece must be freely mountable on the spindle or flange. 3. The flange and chuck pressing surface must be flat and clean, and the outer diameter should be at least not less than one third of the outer diameter of the cutting piece. 4. The flatness of the flange needs to be measured periodically. The correct flange flatness should be within 0.5mm. If the flatness is out of tolerance, the flange needs to be maintained. 5. The gasket should be lined with a flexible material between the cutting piece and the chuck pressing surface. The pressing surface should be kept clean and free of any attachment and the outer circumference of the flange should be exposed more than 2mm. 6. For grinding systems with balance adjustments, system balance adjustments must be made as required. 7. For multi-point fastening flanges, the flange should be evenly fastened to the cutting piece according to the torque recommended by the machine tool builder. Pay attention to the tightness of the screw and nut when installing, and press it enough to drive the cutting piece without sliding. When multiple screws are tightened, they should be tightened step by step according to the diagonal order. If necessary, a force wrench should be used. Not allowed: 1. Forcibly mount the cutting piece on the spindle or change the hole diameter of the cutting piece arbitrarily (if the hole diameter of the cutting disc for stainless steel does not match the spindle, please select the matching piece with the same size) 2. Use flanges that are not clean, unbalanced, with burrs or of different sizes and different indentations. 3. For multi-point fastening flanges, tighten the fastening screws too tightly.
add to favorites 115 * 1 * 22 cutting disc for cold pressing process need to pay attention to? 115.00 l/mile No  
No Picture
With the development of technology and the improvement of production technology, the cutting blades that used to rely mainly on imports have been greatly developed, especially the 115*1*22 cutting disc and the T41 green cutting disc size industry. With the maturity of technology and the improvement of technology, The production of cutting blades is no longer a problem. Today we will lead us to know the cold pressing process in the production process of the cutting piece. Most of the original production is ceramic grinding wheels. The advantages of ceramic bond grinding wheels are their natural porosity and chemical stability, which makes them suitable for dry and wet grinding, especially in the case of water-based and oil-based grinding fluids. However, the ceramic grinding wheel is less elastic and requires a high sintering temperature, which limits its development. The phenolic resin bond grinding wheel has the advantages of good elasticity and low sensitivity to shock, impact and side pressure. Its high stability makes it suitable for higher speeds and improved grinding performance, making it particularly suitable for grinding wheels and Huaji cutting wheels. Its good elasticity makes it suitable for ultra-precise grinding and surface finishing.
add to favorites Stainless steel machinability   No  
No Picture
1.7" cut off disc for stainless steel Due to the large cutting force and high cutting temperature, the material of the tool is made of high strength, high thermal conductivity and good hardness.
2. In order to make the cutting light, a larger front angle should be used, and the smaller lead angle
3. 7" cut off disc for stainless steelTo avoid sticking, the rake face and the back should be carefully ground to ensure a small surface roughness, and a higher cutting speed can be selected.
4. The cutting strength of stainless steel is strong and should be taken for measures of chipping and chip breaking.
5. Stainless steel has low thermal conductivity, high temperature in the cutting area, and is prone to thermal deformation. The accuracy of the scale will affect the finishing requirements.
add to favorites The 12th Shanghai International Metal Cutting and Welding Technology Exhibition   No  
No Picture
The industry giants are all present, competing and demonstrating on the same stage.
   Shanghai International Metal Cutting, Welding and Forming Technology Exhibition was founded in 2004 and has been successfully held for 11 sessions. It is the largest and influential event in the high performance cutting disc、 field of cutting, welding and forming of metal materials in China. The exhibits cover metal sheets and welded pipes. In the field of seamless pipes, profiles, bar products and cutting, welding and forming equipment, the last exhibition was held on November 22, 2017 at the Shanghai New International Expo Center. Nearly 400 outstanding enterprises in metal materials and processing equipment participated. The exhibition has a scale of 30,000 square meters. It attracted 28,321 professional visitors from 37 countries and regions to visit.
◆Several highlights cast the top event
In the same period, we will achieve a perfect industrial chain: Shanghai International Metal Cutting, Welding and Forming Technology Exhibition will be held again at Shanghai New International Expo Center on November 1-3, 2018. Concurrently held:
Shanghai International Metal Sheet and Processing Equipment Exhibition, Sheet Metal Automation and Advanced Equipment Exhibition, Shanghai International Steel Structure Exhibition,
Through the display of top metal sheets, pipes, profiles, bar products and manufacturing equipment, cutting and welding and processing equipment at home and abroad, we will achieve the 2018 Asia's largest metal products and processing technology event, covering new materials manufacturing and equipment enterprises and end users. . Visitors will radiate more than 40 countries and regions.
The organization has a strong lineup and is in line with the international market: 6 foreign industry organizations, 8 national embassies in China and 12 overseas exhibition institutions will join us, and will usher in Germany, Italy, India, Australia, the United States, East Asia, the Middle East and ASEAN. Pavilion and audience purchasing groups.
 Exhibition scope:
Metal welding, standard cut off wheel for metal and accessories:
◆ All kinds of arc welding, resistance welding, high energy beam welding equipment; welding rod, welding wire, flux, etc.
◆ Flame cutting, plasma cutting machine, laser cutting machine, CNC cutting machine; water cutting, gasoline cutting, oxyhydrogen flame cutting, saw cutting equipment, etc.
◆ Welding robots, spot welding robots, cutting robots, handling robots, palletizing robots, multi-degree-of-freedom robots, assembly robots, Cartesian robots, multi-degree-of-freedom robots, parallel robots, robotic arms and robot systems and solutions.
◆ Welding inspection, gas, software; protective masks, glasses, protective clothing, protective shoes, etc.
Sheet, pipe, profile, bar cutting, welding and processing:,
◆ CNC metal band saw, intelligent metal circular sawing machine, vertical band sawing machine, gantry sawing machine, various metal plates, tubes, profiles, bar cutting band sawing machines, circular sawing equipment; carbide saw blades, diamond saw blades, Metal circular saw blades, saw belts, saw blades, machine saw blades, bi-metal band saw blades, etc.;,
◆ Plate slitting slitting, CNC punching machine, high-speed precision punching machine, turret punching machine; all kinds of plate laser cutting machine; plasma cutting, CNC bending machine, shearing machine, sheet metal processing center, thin plate forming compound machine tool, thin plate stretching Machine, roll forming, joining; thick plate forming;
◆ Steel pipe welding and cutting equipment, pipe laser cutting machine; bending pipe and pipe fitting processing equipment;
◆ All kinds of presses, forging, bending, folding, straightening, shearing, stamping, slotting and other metal processing machines.
◆ Machine tool accessories, CNC systems, servo drives, machine tools, digital display devices, tools, tools, etc. Metalworking fluids, rust-proof materials, surface treatments, burrs, polishing equipment, etc.
add to favorites How to choose the correct cutting piece when the tool is grinding? l/mile No $
No Picture
There are many types of dicing abrasives, and there are various shapes and sizes. Each dicing blade has a certain range of application depending on the abrasive of the dicing sheet, the bonding material and the manufacturing process. If improperly selected, it will directly affect the processing accuracy, surface roughness and production efficiency. Therefore, when grinding, it is necessary to select a suitable cutting piece according to the specific situation. Then how to choose the correct flat abrasive cutting disc? For the common cutting pieces used in grinding, let us clearly select the cutting piece. Ordinary cutting piece selection Abrasive selection The choice of abrasive depends primarily on the workpiece material and the heat treatment method. a. When grinding a material with high tensile strength, use a high toughness abrasive. b. When grinding materials with low hardness and high elongation, use brittle abrasives. c. When grinding a material with high hardness, use a higher hardness abrasive. d. Select an abrasive that is not susceptible to chemical reaction by the material being processed. The most commonly used abrasives are brown corundum (A) and white corundum (WA), followed by black silicon carbide (C) and green silicon carbide (GC). The rest are also commonly used in chrome corundum (PA) and single crystal corundum (SA). , microcrystalline corundum (MA), zirconium corundum (ZA). Brown corundum cutting piece: brown corundum has high hardness and high toughness. It is suitable for grinding metals with high tensile strength, such as carbon steel, alloy steel, malleable iron, hard bronze, etc. This kind of abrasive has good grinding performance and wide adaptability. It is often used to remove a large amount of coarse grinding, which is cheap and can be widely used. White corundum cutting piece: The hardness of white corundum is slightly higher than that of brown corundum, and the toughness is lower than that of brown corundum. When grinding, the abrasive grains are easily broken. Therefore, the grinding heat is small, and it is suitable for manufacturing refined hardened steel and high carbon steel. High-speed steel and cutting blades for grinding thin-walled parts are more expensive than brown corundum. Black silicon carbide cutting sheet: Black silicon carbide is brittle and sharp, and its hardness is higher than that of white corundum. It is suitable for grinding materials with low mechanical strength, such as cast iron, brass, aluminum and refractory materials. Green silicon carbide cutting piece: Green silicon carbide has higher hardness and brittleness than black silicon carbide, sharp abrasive grain and good thermal conductivity. It is suitable for grinding hard and brittle materials such as hard alloy, optical glass and ceramics. Chrome corundum resin EN12413 cutting discs: suitable for grinding tools, measuring tools, instruments, threads and other workpieces with high surface quality requirements. Single crystal corundum cutting piece: suitable for grinding stainless steel, high vanadium high speed steel and other materials with high toughness, high hardness and easily deformed burn. Microcrystalline corundum cutting sheet: suitable for grinding stainless steel, bearing steel and special ductile iron, etc., used for forming grinding, cutting grinding, mirror grinding. Zirconium corundum cutting sheet: suitable for grinding Austrian stainless steel, titanium alloy, heat resistant alloy, especially suitable for heavy-duty grinding.