Please register or log in.

  • (64 pages)
  • 1
  • 2
  • 3
  • 4
  • 5
  • next
  • last
Advertisements in this category Notify me when new ads are submitted in this category
  Title ascendingdescending Type ascendingdescending Price ascendingdescending Picture
add to favorites OnePiece Hot Lanuch Even ——Come and join us! Pc  
Have you heard the Anime OnePiece? Several days ago the game which a turn-based action-adventure RPG game on the H5 platform has been launched by instantfuns. Here’s the launch even: Event1: 7-Day Sign-in Content: Sign-in daily to claim rewards! Rewards: Sign-in for 1 Day, you can receive Beli*10000, Mizu Mizu Meat*3, Seafood rice*1 Sign-in for 2 Days, you can receive Blue Crystal*1, Mystery Fruit*1, Pudding Set*1 Sign-in for 3 Days, you can receive Diamond*50, Purple Crystal*1, Mizu Mizu Meat*1 Sign-in for 4 Days, you can receive Beli*10000, Blue Crystall*3, Mystery Fruit*2 Sign-in for 5 Days, you can receive Beli*100000, Mystery Fruit*3, Diamond*50 Sign-in for 6 Days, you can receive Mystery Fruit*3, Salvage Rope*5, Medal*1 Sign-in for 7 Days, you can receive Beli*1000000, Mystery Fruit*5, Pudding Set*3 Event 2: Hot Party Content: During event period, host parties reach requirement to claim rewards! Rewards: Host 1 Time, you can receive Seafood rice*1 Host 2 Times, you can receive Grandpa’s Rice*1 Host 5 Times, you can receive Grandpa’s Rice*1 Host 10 Times, you can receive Sky Pumpkin*1 Host 20 Times, you can receive Sky Pumpkin*3 Host 50 Times, you can receive Dinosaur Meat*1, Mystery Fruit*1 Host 100 Times, you can receive Dinosaur Meat*2, Mystery Fruit*1 Host 200 Times, you can receive Hatchan Takoyaki*1, Mystery Fruit*1 Event3: Sea Adventure Content: During event period, defeat Pirates in Treasure reach requirements to claim rewards! Rewards: Defeat Pirates 10 Times, you will receive Silver Coin Bag*1, Mystery Fruit*1, Pirate Bento*3 Defeat Pirates 20 Times, you will receive Silver Coin Bag*3, Mystery Fruit*2, Pirate Bento*5 Defeat Pirates 30 Times, you will receive Gold Coin Bag*2, Mystery Fruit*5, Pirate Bento*10 Defeat Pirates 40 Times, you will receive Gold Coin Bag*5, Mystery Fruit*10, Mizu Mizu Meat*3 Defeat Pirates 50 Times, you will receive Gold Coin Bag*5, Mystery Fruit*10, Mizu Mizu Meat*4 Defeat Pirates 100 Times, you will receive Gold Bars*5, Mystery Fruit*10, Mizu Mizu Meat*5 Defeat Pirates 150 Times, you will receive Gold Bars*7, Mystery Fruit*10, Pudding Set*3 Defeat Pirates 200 Times, you will receive Treasure Box*3, Mystery Fruit*10, Pudding Set*3 Defeat Pirates 250 Times, you will receive Treasure Box*5, Mystery Fruit*10, Pudding Set*7 Defeat Pirates 300 Times, you will receive Treasure Box*10, Mystery Fruit*10, Pudding Set*10 Event4: Invincible Content:During event period, defeat opponents in Arena reach requirements to claim rewards! Rewards: Defeat Opponents 1 Time, you will receive Medal*2, Grandpa’s Rice*1, Silver Coin Bag*1 Defeat Opponents 4 Times, you will receive Medal*4, Grandpa’s Rice*2, Silver Coin Bag*1 Defeat Opponents 8 Times, you will receive Medal*6, Grandpa’s Rice*3, Silver Coin Bag*2 Defeat Opponents 15 Times, you will receive Medal*8, Grandpa’s Rice*4, Silver Coin Bag*3 Defeat Opponents 25 Times, you will receive Medal*10, Grandpa’s Rice*5, Silver Coin Bag*5 Defeat Opponents 40 Times, you will receive Medal*12, Grandpa’s Rice*8, Gold Bars*1 Defeat Opponents 60 Times, you will receive Medal*15, Grandpa’s Rice*12, Gold Bars*2 Defeat Opponents 90 Times, you will receive Medal*20, Sky Pumpkin*1, Gold Bars*3 Event5:Daily Top-up Content:Daily Top-up reached requirement to claim rewards! Rewards: Total Top-up reach $1.99, you wil receive Diamond*30, Mystery Fruit*2 Total Top-up reach $5.99, you wil receive Diamond*50, Mystery Fruit*3 Total Top-up reach $15.99, you wil receive Diamond*100, Blue Crystal*3, Purple Crystal*3 Total Top-up reach $29.99, you wil receive Diamond*150, Pink Crystal*3, Yellow Crystal*3 Total Top-up reach $55.99, you wil receive Diamond*250, Mystery Fruit*3, White Gem*3 Total Top-up reach $109.99, you wil receive Diamond*400, Red Gem*5, Purple Gem*5 Total Top-up reach $209.99, you wil receive Diamond*800,Green Gem*10, Yellow Gem*10 Event6:Total Top-up Content:Weekly Top-up reached requirement to claim rewards! Rewards: Total Top-up reach $39, you wil receive Diamond*188, Pri Treasure Box*1 Total Top-up reach $59, you wil receive Diamond*288, Med Treasure Box*1 Total Top-up reach $129, you wil receive Diamond*488,Adv Treasure Box*1 Total Top-up reach $329, you wil receive Diamond*888,Adv Treasure Box*5 Total Top-up reach $669, you wil receive Diamond*1888,Ace*1 Total Top-up reach $1000, you wil receive Diamond*3888,Adv Treasure Box*10 Total Top-up reach $1666, you wil receive Diamond*6888, Kuma*1 If you are interested in this classic game OnePiece, click the links below: PC site: https://pc.op.instantfuns.com/ Mobile site: https://h5.op.instantfuns.com/
add to favorites Introduction to molding and grinding Pc  
No Picture

Molding and grinding refers to a method in which a grinding wheel having a certain shape and a workpiece are moved relative to each other, or a forming grinding wheel having a predetermined shape is used, and a grinding processing method by the same turning grinding process is used.

Molding and grinding is widely used in various types of cutting tools, mold parts and stencils. The grinding wheel plays a major role in the transformation. Therefore, the performance of the grinding wheel has a very important influence on the quality and efficiency of the forming grinding.

There are three main requirements for formingthin abrasive cutting disc for metal :

1 shape retention:

Since it is a form grinding, the most important thing is naturally the shape retention ability of the grinding wheel! Good shape retention ensures precision after grinding, while reducing dressing frequency and increasing machining efficiency!

2 surface roughness after grinding

Many molded and finished products are used to move parts to each other. Therefore, good surface roughness reduces the resistance to actuation and increases product life.

3 easy to trim

If the shape retention is good, but it is not easy to trim, it will also reduce the processing efficiency.

add to favorites Mirror surface grinding effect Pc  

Mirror surface refers to a description of the good roughness that can be obtained after mechanical grinding. Just like a mirror, it is shiny and smooth, and it can be clearly called out the metal surface of the object.

Mirror surface grinding generally uses high-quality grinding wheels to achieve excellent surface roughness through precise grinding, while at the same time taking into account the good dimensional accuracy of the knife; the purpose is to effectively improve the mechanical life, reduce the cutting resistance, and in order to obtain a smooth finished product. Molds, etc. Usually the workpieces that are mirror-polished are mostly molds or workpieces that require friction to act on each other. Therefore, to achieve mirror polishing, high performance cutting discs are required. To achieve high performance cutting blades, the following requirements must be met:

Wear resistance: The rougher the surface, the smaller the contact area, the greater the pressure per unit area and the easier it is to damage.

Stable: uneven, unstable, as if driving on uneven roads.

Corrosion resistance: Roughness can easily corrode corrosive gases or liquids from the valleys, causing corrosion of the surface of the grinding wheel.

Anti-fatigue: When fatigue testing is concentrated at a certain point or part, it will amplify the fatigue strength of the grinding wheel.

Sealing: Roughness prevents parts from being tightly bonded, and gas and liquid penetrate through the gaps in contact with the surface of the grinding wheel.

Mirror surface grinding is a kind of precision grinding. The ground material can be placed on the grinding disc, the grinding wheel rotates, the correction wheel drives the workpiece to rotate, the gravity is pressed to press the workpiece, and the workpiece and the grinding disc are relatively operated to rub. Grinding and polishing purposes. The grinding disc dressing mechanism adopts the hydraulic suspension guide rail to reciprocate back and forth, and the diamond shaving cutter precisely trims the grinding surface of the grinding disc, so that the grinding disc obtains an ideal plane effect.

The mechanical processing methods for obtaining mirrors are: material removal method, no cutting method: the material removal methods mainly include: grinding, grinding, polishing, and electric spark. The material removal method must have a large amount of equipment investment; skilled and experienced technical workers; expensive grinding wheels and other prerequisites, mirror grinding still requires cost considerations without special needs.

add to favorites What constitutes a high-quality mobile cone crusher? Pc  
No Picture

Our advanced construction waste crusher is a large-sized rock crusher that follows the high-performance crushing advantages of cone crusher and absorbs foreign advanced technology. This equipment adopts advanced hydraulic crawler-type walking device as well as the design of multiple chamber type to satisfy coarse crushing, medium crushing, fine crushing and superfine crushing needs and create sand and stone aggregates with excellent particle shape. It has been widely used for the crushing and screening of ores and rocks with different hardness such as iron ore, copper ore, granite and basalt and the highest output can reach 500t/h.

Mobile cone crusher plant has been proved to have excellent performance when applied in aggregate production and mine topsoil and it has high output and high efficiency. It adopts new type of cone crusher as the main crushing machine, uses variable speed hydrostatic direct drive, and what is more, it is installed overload protection system and adjusts the discharging mouth through hydraulic pressure.

Our mobile cone crusher offers pre-screening module as the selective piece which is able to screen out the fine particles before the materials go into the crushing chamber, which is conducive to improving the service life of the quick-wear parts of the crushing machine. The receiving hopper and feeder machine with large capacity is equipped with all automatic metal detection system and discharging system, which can protect cone crusher and reduce the stoppage losses caused by the clearance of metal materials in the discharging chute. In addition, this equipment has such features of fast installation, easy and simple check and repair, big crushing ratio, high capacity and yield and advanced electronic control system.

Our mobile cone crusher plant is an advanced crushing machine specially designed for granite, basalt, limestone and marble, and it is able to crush the materials to stone and sand that conforms to the needs in large-sized hydropower station, mixing station and construction field according to the customers needs. In addition, there are needle-shaped particles in the final products, which greatly ensure the project quality, and what is more, its advantages of high crushing efficiency, energy conservancy, environmental protection and high-performance crushing advantages make it have good development tendency in the crushing and screening field of construction waste.

add to favorites diamond grinding wheel Pc  
No Picture
1. Superabrasive grinding wheels made of diamond or cubic boron nitride (CBN) abrasives have been widely used in all aspects of grinding because of their excellent grinding performance. Diamond grinding wheels are special effects tools for grinding hard and hard materials such as cemented carbide, glass, ceramics and precious stones. In recent years, with the rapid development of high-speed grinding and ultra-precision grinding technology, higher requirements have been placed on the cut off disc for stainless steel. The grinding wheel of ceramic and resin bonding has been unable to meet the production needs. The metal bond grinding wheel has its bonding strength. high performance cutting disc, good formability, long service life and other significant characteristics have been widely used in production. The metal bond diamond grinding wheel is mainly of two types of sintering and electroplating depending on the manufacturing method. In order to give full play to the role of super-hard abrasives, foreign countries began to develop a new type of grinding wheel by high-temperature brazing process from the early 1990s, namely single-layer high-temperature brazing super-hard abrasive grinding wheel. At present, this kind of grinding wheel is still in the research and development stage.
add to favorites Preparation of diamond abrasive Pc  

According to the thermal stability of the diamond abrasive, the firing temperature of the grinding wheel and the refractoriness range of the bonding agent were determined. The reaction of several oxides at the firing temperature of the hot sale cutting wheel and the diamond abrasive was analyzed by using the free energy generation principle of the oxide. The chemical composition of the binder was determined. According to the glass structure theory, the content of each component in the binder was determined, the binder formulation was determined, and it was used in industrial production.

3. The preparation process of the binder. Our company used smelting method to prepare ceramic binder, determined the process of binder preparation, discussed the influence of different heating curves on the properties of smelting binders, and found that only the crystallization water and easily decomposable materials in the binder raw materials were at their decomposition temperature. After the decomposition is completed, it is raised to the smelting temperature, and the obtained binder is stable in performance; the performance test of the binder is carried out, and the holding strength of the diamond abrasive grains is large, and it is suitable for manufacturing a ceramic bond diamond grinding wheel for grinding diamond composite sheets.

4. The grinding of the diamond composite sheet was carried out. It was found that the grinding of the composite sheet mainly removes the excess diamond on the outer circumference of the composite sheet. Since the diamond is very hard, when grinding with a resin bond grinding wheel, the grinding wheel is ensured by the resin bond diamond grinding wheel. Durability, generally done very dense, basically no air holes, so the grinding force is particularly large during grinding, the damage to the spindle of the grinding machine is very large; and the grinding wheel is not sharp, the grinding wheel will make the knife when the knife is large, and it will be issued Squeaking; grinding efficiency is very low. Because the ceramic bond diamond grinding wheel has pores, the self-sharpness of the grinding wheel is very good, and the damage to the spindle of the grinding machine is small; the grinding wheel is sharp and the grinding efficiency is high; when the grinding is not performed, the size of the composite piece is good. In addition, when the composite sheet is ground, the temperature in the grinding zone is high, and the resin is not resistant to high temperature, so the resin will become soft in the grinding zone, the holding strength of the diamond abrasive is lowered, and the grinding wheel is consumed quickly; the ceramic binder does not have this problem. The grinding wheel has little noise during grinding and almost no grinding sound is heard. The advantage of the ceramic bond diamond grinding wheel for grinding the diamond composite sheet is that the grinding efficiency is high, the size of the ground composite sheet is good, the grinding noise is low, and the damage to the spindle of the grinding machine is small.

add to favorites Cold pressing process in the production process of cutting sheets Pc  
No Picture

Most of the grinding wheel production is ceramic grinding wheel. The ceramic bond grinding wheel has the advantages of natural porosity and chemical stability, so it is suitable for dry grinding and wet grinding, especially under the conditions of water-based and oil-based grinding fluid. However, ceramic grinding wheels are less elastic and require a high sintering temperature. In contrast, 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 Produce high performance cutting disc. Its good elasticity makes it suitable for ultra-precise grinding and surface polishing, making it particularly suitable for grinding wheels.Also one of the hot sale cutting wheel

The production process of the phenolic resin bond grinding wheel is mainly a cold pressing process, and the bonding agent used in the cold pressing process is a wetting agent and a powdery resin, and a liquid phenolic resin, furfural, decyl alcohol, cresol, etc., which are generally used as a wetting agent, Mostly used are liquid phenolic resins. The factors determining the ratio of liquid resin to powdered resin (usually called liquid to powder ratio) are: abrasive particle size distribution, filler type, filler amount, viscosity of liquid resin, and properties of powdered resin. If the viscosity of the liquid resin is large, more liquid resin is required to completely cover the surface of the abrasive; the smaller the particle size of the abrasive and the filler, the larger the specific surface area and the more the liquid is used; the higher the molecular weight of the powdered resin The lower the free phenol, the worse the adhesion to the liquid resin and the greater the amount of liquid required. In all of the above cases, it is necessary to increase the liquid to powder ratio. Generally, a liquid resin is used as a wetting agent, and the ratio of liquid to powder is 1:2 - 1:4, and a mixture of furfural or decyl alcohol and eucalyptus oil is used as a wetting agent, and the ratio of liquid to liquid is 1:6 - 1:8. It is better to achieve the desired mixing effect without damaging the abrasive. The mixing time after adding the fine powder is generally 2-4 minutes. If the mixing is too short, the mixing is not uniform, the resin film is too long to fall off, and the temperature of the material is increased.

add to favorites Unique traits of mobile crusher and cone crusher Pc  
No Picture

Our company has been engaged in the research, development and manufacture of whole set of portable crusher plant for many years and knows every well their secret. So no matter you are a veteran player or a new comer in the mining machinery industry, we suggest you read this article and we can guarantee you will learn more and profound than reading product instruction.

The important features of mobile stone crusher are big crushing ratio and good particle shape which are because it applies the technology of stone mobileing stone, so that materials will be crushed repeatedly, thus reducing the abrasion of the machine as much as possible. However, such working principle also determines the limit of mobile crushing machine: it has no advantage in hard ore crushing.

By contrast, cone crusher is a crushing machine more suitable for crushing hard ores. Speaking from working principle, China cone crusher crushes and release stone materials making use of the change of the gap between the two cones installed head to head. Of course, to do such a job, sufficient safety measure must be taken to avoid damaging efficient spare part. Such insurance device generally has mechanical spring device and hydraulic spring device. At present, hydraulic cone crusher is developing rapidly and has become the main force in the mining machinery market. We also mainly manufactures sand making machine which can be divided into two types: principal axis stationary type and principal axis mobile type according to the adjustment method of discharging mouth and the installation method of principal axis. The adjustment of discharging mouth of principal stationary type hydraulic cone crusher is carried out through the spiral gyration of fixed cone to make the rolling mortar wall of fixed cone to move up and down, and its principal axis is short and thick and is fixable inserted onto the machine frame and its bearing ability is strong. The working principle of the insurance device goes like this: in the crushing process, the crushing force is pulsatile, when there are non-crushable materials, the insurance device will increase the crushing gap to make the hard materials to go through and the hard materials will be separated by the follow-up ore beneficiation equipment.

add to favorites Market recognition of product quality Pc  
No Picture

The standard is not the bondage but the standard, which is the guarantee of quality. The Aurora Abrasives Enterprise carefully obeys the production work of the grinding wheel and the cutting piece, and produces a batch of standard cut off wheel for metal that meets the industry standards and quality assurance.hot sale 9" cutting off wheelThe reason why it is welcomed is the market recognition of product quality.

China is an important part of the world. China's different industries are very active in the world. They show China's contribution to the world. China's abrasives industry has obvious advantages in terms of product cost performance. With the rapid growth of market demand, diamond tool companies all over the world have launched, and a number of advantageous enterprises with international competitiveness have emerged. China has become an important diamond tool producer, user and exporter in the world, and it is expected that the application of diamond tools in emerging industries will be further expanded.

add to favorites 2018 International Abrasives Grinding Exhibition Pc  

2018 China (Guangzhou) International Abrasives Grinding Exhibition opened in Guangzhou Pazhou International Convention and Exhibition Center. 2018 China (Guangzhou) International Abrasives Grinding Exhibition is themed on abrasives, abrasives, superhard materials and grinding products, covering the latest technology and products in the abrasive grinding industry. It is specialized in providing grinding solutions. The first professional grinding technology exhibition in the region. Guangzhou Sanmao Exhibition will gather the largest and largest mainstream abrasives and abrasives enterprises in Guangdong Province and its surrounding areas, fill the gap of the three-grinding industry in South China, open up the technical and information exchange barrier, and focus on the market of abrasives and abrasives. The industry provides a quality platform for user needs, technical support, and product circulation.

The exhibits of this year's exhibits are divided into several categories, including abrasive abrasives and raw and auxiliary materials, abrasive abrasive manufacturing and testing equipment, grinding processing related equipment and tools, including but not limited to:

Superhard materials and products - synthetic diamond, cubic boron nitride and its micro-powder, PCD, PCBN, CVD diamond film and thick film / super hard material grinding, cutting, drilling, polishing and other tools.

Ordinary abrasives and products - corundum, silicon carbide (boron) and other ordinary abrasive / ordinary fixed abrasive / refractory materials. Coated abrasives - abrasive cloth, sandpaper and various shaped coated products. Raw and auxiliary materials - raw materials, 7'' cut off disc for metalmolds, various bonding agents, metal powders, binders, substrates, etc. for the manufacture of superhard materials and ordinary abrasives. Grinding related equipment and tools - grinding machines, grinding centers, electrical processing equipment, grinding machines, polishing machines, honing machines, lapping machines, grinding robots and various accessories and related auxiliary materials and products; metal forming machine tools , metal cutting and welding equipment, CNC systems and functional components, industrial automation, machine tool accessories and components; various tools, tools, measuring tools, etc.

Special equipment for the manufacture and testing of abrasives - synthetic diamond press, shape selection machine, screening machine, magnetic separator, shaker, mixing machine, forming machine, hot press, cold press, sintering furnace, welding machine, Laser cutting machine, corundum and silicon carbide smelting furnace, crushing and milling machine, firing and hard (sulfur) equipment, grinding wheel processing equipment, abrasive cloth manufacturing equipment and various abrasive tools testing equipment.

The International Abrasives Grinding Exhibition aims to create an integrated platform for abrasive grinding technology and equipment in South China, providing a reliable one-stop solution for the industry.

add to favorites Курсы SSAT, ISEE, SAT, ACT преподаватель, репетитор из США Pc  
Преподаватель американского университета, репетитор английского языка, проводит индивидуальные курсы подготовки к тестам / экзаменам SSAT, ISEE, SAT, ACT в Москве 8-926-206-3689. Ваша задача - деловой английский? Через короткое время вы сможете выучить английский язык до уровня свободного ведения переговоров. Нужен бизнес английский язык для работы с деловыми партнерами? Необходимы курсы подготовки к тесту GED или MAT (Miller Analogies Test) ? Поступаете в американскую частную школу и хотите подготовиться к тестам SSAT, ISEE, GED? Поступаете в американский университет и хотите подготовиться к тестам TOEFL, SAT, ACT? Преподаватель из США решит вашу проблему. Ваш репетитор проводит обучение с прицелом на надежный и быстрый результат 8-926-206-3689. Английский разговорный, деловой английский язык, американский английский, языковые курсы, тест SSAT, ISEE, SAT, ACT - все уровни и направления в изучении английского языка вам доступны. Ваш преподаватель / репетитор решит задачу с минимальными затратами времени и средств 8-926-206-3689.
add to favorites The status quo of Chinese abrasives in the world Pc  
No Picture

The world's superhard material tools are produced all over the world. Among them, 12 inches cut off wheel tools are manufactured in Japan, Germany, the United States and South Korea. These countries are rapidly turning tools for superhard materials. Other abrasives have been used. It is decreasing year by year. Because of its high efficiency, energy saving, long life and environmental friendliness, super-hard materials have ten times higher efficiency and life than traditional tools.

 China's superhard materials industry began in the 1970s. Prior to this, almost all of the super-hard material tools such as diamond saw blades were imported. In the 1980s, a large number of production enterprises mainly producing small-diameter diamond saw blades were launched, and the high-speed development period began in the 1990s. The super-hard material tool industry has realized a complete industrial system with complete scale and considerable scale, from the end to the present, including the supporting raw material supply system, equipment supply system, auxiliary material system and market system. Produce tools for superhard materials that basically meet the needs of the development of various industries. There are still a large number of products exported every year, especially in the middle and low-end products, but at the high-end product manufacturing and technical level, compared with the advanced level of foreign countries. There is a certain gap.  

 With the continuous advancement of science and technology, the unique properties of super-hard materials have been continuously developed and utilized. The technical level of super-hard materials has been continuously improved, and the application fields have been continuously expanded. The super-hard material products industry has become an indispensable important part of national economy and national defense construction. component. With the maturity of synthetic diamond technology and the rapid development of China's economy, diamond tool manufacturing technology has accumulated and progressed, and has strong manufacturing capabilities.

Due to the advantages of enterprises in labor costs and the subsequent catch-up situation in technology research and development, Chinese enterprises have obvious advantages in product cost performance. With the rapid growth of market demand, diamond tool companies all over the world have launched, and a number of advantageous enterprises with international competitive strength have emerged. China has become an important producer, user and exporter of diamond tools in the world, with an annual output value exceeding 10 billion yuan. The application of diamond tools in emerging industries is expected to expand further with the increasing grade of synthetic diamonds. Its excellent performance is expected to be widely used in high-tech fields, such as machining of precision instruments such as aerospace instrument bearings, radar waveguides, optical devices, high-energy smokers, etc.; can be used for single crystal silicon, polycrystalline silicon 0.1-0.2mm High-precision precision machining such as cutting, grinding, and satellite solar panels for thickness sheets; it can be used for micro-precision cutting, slotting, back-thinning, and nano-diamond polishing of large-scale integrated circuits such as computer chips. The developed countries in the world all regard superhard materials and products including synthetic diamonds as the development focus. The research and application level of superhard materials and their products represent the level of scientific and technological development of a country to some extent.

add to favorites The properties of rocks have effects on quarry crusher Pc  
No Picture

We should know the nature of rocks before using the quarry crusher. Only understand the properties, can we choose suitable quarry crusher, and avoid using unsuitable crushers.Structure, density, humidity, hardness, strength, flexibility, plasticity, brittle, heterogeneity, anisotropy, porosity, ruggedness, drill-ability, etc, everyone is closely related with the crushing effect.

Rock crushing method, in specifically, is the method to drill various sizes and shades of holes in different performance rock stratum by a variety of mining machines. According to the crushing principle, it can be pided into impact, cutting and impact-cutting three categories. Each category has its own application range. They all have unique features and the same crushing theory. The drill which directly crushes the rock requires reasonable structure and size, as well as suitable pressure, rotate speed and torque. The drill bit must be match with the nature of rocks.

The sand making machine is suitable for crushing rocks such as granite, basalt, river gravel, limestone, andesite, rhyolitic rocks, diorite, diabase, sandstone, etc., which can widely applied to crush mid hardness and large-scale rocks and ores in mining, smelting, building material, highway, railway, water conservancy chemical and other industries. It is suitable for primary and secondary crushing for all and rocks with compressive strength less than 320 MPa.

add to favorites Abrasive companies keep pace with the times Pc  
No Picture

Adapting to the trend is to keep pace with the times, the needs of abrasives companies are constantly changing, China supply 7" Cut off disc The market update is also promoting the pattern of abrasive companies. Small abrasives companies must have industry vision, follow national policy trends, and explore new ways to explore the future of the company.

1, adjust the residual structure, streamline the processing mode to suppress excess capacity.

Achieving the ability to create manufacturing capabilities when manufacturing standard cutting discs, producing standards with innovative Cut off disc for stainless steel products, to achieve this goal, the first thing to have a business development strategy. We all know that whether it is industry development or enterprise progress, we must formulate strategic development plans. This is the goal of advancement to prevent blind and more mad development. After all, the production of low-end abrasives is in a state of overcapacity. Only by completing the tasks of structural adjustment and transformation of development methods, strive to develop healthily and rapidly. Through the whole industry, we will cultivate a group of large and powerful enterprises and a small number of small and specialized small giant enterprises to enhance the core competitiveness of the industry.

2. Enhance the intensity of independent innovation and research input.

And actively explore joint research on production, learning, research, and new methods. Through the development of the brain, we can introduce technology and talents, and actively develop high-end products. The focus of grinding is on deep processing product development. To meet the rapid growth of the photovoltaic industry and engineering ceramics and refractory market demand.

3. Promote green manufacturing.

Green manufacturing refers to modern manufacturing models that consider environmental impact and resource efficiency while ensuring product functionality, quality and cost. It is the development trend of the mechanical manufacturing industry in the 21st century. It is an application that realizes energy conservation and recycling of resources, minimizes the impact on the environment, and establishes an important way of resource conservation and environmental friendliness.

Green manufacturing includes energy conservation and emission reduction. This work is a more prominent problem in the abrasives industry. Although the abrasives industry has not yet been included in the “two highs and one capital” industry, the National Development and Reform Commission's abrasive grinding industry includes the survival of enterprises. At the bottom line, our business is to learn new technologies, such as energy conservation and emission reduction, new technologies, the development of circular economy, and the full implementation of green manufacturing.

add to favorites Grinding wheel particle size selection Pc  

The particle size of the grinding wheel is to crush, roll and process the smelted crystal block, and then screen the fine powder of different sizes of particles, wherein the particle size is represented by a number, which is called particle size. The particle size is generally expressed by the number of the sieve, that is, the sieve hole per inch length, and the larger the number, the smaller the abrasive grain.

thin flat cutting discGranular choice

The wheel size is a measure of the size of the abrasive particles. The choice of grinding wheel size directly affects the surface roughness and grinding efficiency of the workpiece. In general, the grinding efficiency is high when grinding with a coarse-grained grinding wheel, but the surface roughness of the workpiece is poor. When grinding with a fine-grained grinding wheel, the surface roughness of the workpiece is good, but the grinding efficiency is low. In short, under the premise of meeting the surface roughness requirements of the workpiece, the abrasive tools with coarser grain size should be selected as much as possible to ensure high grinding efficiency.

Usually the choice of grinding wheel size is determined according to the grinding needs. usually:

Rough grinding: steel ingots, forged castings, leather wood, cut steel billets, etc., for 12#. 30#

Semi-finishing: used for rough grinding of plane, outer circle, inner circle, centerless grinding, etc., applicable to 36#

General fine grinding: used for outer circle, inner circle, plane, centerless, tool grinding machine and various special grinding machines, etc., applicable to 60#

For fine grinding, honing, threading, etc., for 120# one W20

Super fine grinding: fine grinding, super fine grinding, mirror grinding, etc., for W20

add to favorites Resin diamond grinding disc use ten must note Pc  
The work of the resin diamond high quality metal grinding disc is mainly to grind. The grinding disc is also divided into many different types according to different classification methods. The resin grinding disc is one of them. The resin grinding disc is a grinding disc processed by a bonding agent. To introduce the problems to be paid attention to during use, let's take a look at it! 1. Before using the resin grinding disc, be sure to check the product for cracks, products and dumb sounds. If it is, it cannot be used. 2. The speed of the resin diamond grinding disc shall not exceed the specified safe working line speed. 3. Do not use the end face high quality metal grinding disc exclusively. Please do not work with the end face of the grinding disc. 4. When the resin diamond grinding disc is working on the workpiece, please do not push the workpiece with the lever to increase the pressure on the grinding disc. 5. Special dressing tools should be used for dressing the high quality metal grinding disc. Operators must wear protective goggles when trimming.
add to favorites Vibratory mill is a special grinding mill Pc  
No Picture

A vibratory mill having a long, thin milling chamber which spirals upward in a conical arrangement from a center location within a housing to a point at the periphery of the housing. The configuration of the chamber improves the efficiency of the mill and promotes the use of a continuous operation rather than a batch process. Eccentrically mounted rotating weights cause the media and parts to migrate upward from a central receiving position to the periphery of the housing.

This is the first mill we will consider which does not rely on rotation for the main grinding action. The vibrating mill is a grinding mill which is filled to about 65 80% of its capacity with grinding media such as balls or rods. The chamber is vibrated at a frequency of between 1000 and 1500 times per minute (can be variable speed) by cams or imbalanced weights.The grinding action is efficient and thorough. Grinding media material and chamber lining can vary depending on application.

Vibrating mill can grind hard or soft materials. Maximum throughput is in the order of 20 t.p.h. but feed size should be kept fairly small. Although final product size can be as low as 0.005mm this type of mill is often used for less fine applications. Product size and shape is a function of the time spent in the mill, media type and size, and frequency of vibration. Commonly functions as a batch mill.Material suitability for vibratory mill: Lime, Calcium carbide, Alumina, Gypsum, Bauxite, Chromitem, Limestone, Sillimanite, Fluorite, Pigments, Dolomite, Magnesite.

Vibratory mills are the most versatile line of mills available today for fast, low-cost particle size reduction to sub-micron range. The raymond mill action achieves higher output per input horsepower; precise control of size and distribution. Product contamination from media and lining wear is virtually eliminated. Maintenance costs are low because of few moving parts and replaceable linings made of abrasion-resistant metal, ceramic or elastomers.

The Vibratory Mill's unique vibratory motion, coupled with the use of cylindrical media, allows a dense packing of the media bed assuring maximum media surface contact and minimum void area when operated under a low energy condition. Feed materials as large as 300 microns can be reduced to sub-micron sizes.In the high energy configuration, feed materials as large as twelve inch agglomerates have been successfully milled and solid particles of a half inch are being reduced to a d50 of less than 5 microns low energy condition is reserved for wet milling whereas the higher energy mode can be used either wet or dry.

add to favorites Stainless steel grinding program Pc  
No Picture

Stainless steel is a type of metal that has a degree of corrosion resistance in the atmosphere or in certain corrosive media. Because of these advantages, it is widely used in different industries of the current society. Stainless steel grinding burns have been plagued by grinding. Briefly introduced the classification of stainless steel and the characteristics of stainless steel grinding, stainless steel grinding burns and solutions.

One: 7" cut off disc for stainless steel classification:

Martensitic stainless steel (common grades are 1Cr13, 2Cr13, 8Cr13, 1Cr17Ni2, etc.)

Ferritic stainless steel (common grades are 0Cr13, 1Cr14S, 1Cr17, 1Cr17Ti, etc.)

Austenitic stainless steel (common grades are 1Cr18Ni9Ti, 0Cr18Ni9, 1Cr18Ni9, etc.)

Precipitation hardening type stainless steel (common grades are 0Cr17NiCu4Nb, 0Cu17Ni7Al, 0Cr15Ni7Mo2Al, etc.)

It can be classified into a Cr system (SUS400), a Cr-Ni system (SUS300), a Cr-Mn-Ni (SUS200), and a curing system (SUS600).

Two. Features of grinding stainless steel:

1. Stainless steel has high toughness and high heat strength, while the cutting edge of the grinding wheel has a large negative rake angle. During the grinding process, the grinding debris is not easily cut, the cutting resistance is large, and the extrusion and friction are severe. The grinding force per unit area is very large, and the grinding temperature can reach 1000 ° C ~ 1500 ° C. At the same time, under the action of high temperature and high pressure, the grinding debris is easy to adhere to the grinding wheel, filling the gap of the abrasive particles, so that the abrasive particles lose the cutting effect. The type of stainless steel is different, and the condition of the grinding wheel is different.

2. The thermal conductivity of stainless steel is small, the high temperature during grinding is difficult to output, and the surface of the workpiece is easily burned and annealed. The depth of the annealed layer can sometimes reach 0.01 to 0.02 mm. Severe fracture deformation during the grinding process results in work hardening on the abrasive surface. In particular, when austenitic stainless steel is ground, the austenite structure is not stable enough, and martensite structure is likely to occur after grinding, and the surface hardening is severe.

3, stainless steel has a large coefficient of linear expansion, which is easily deformed under the action of grinding heat, and the size is difficult to control. This is especially true for thin walls and elongated components. Most types of stainless steel cannot be magnetized. In the case of surface grinding, the workpiece can only be clamped by mechanical clamping or special clamps. The workpiece is clamped to the side of the workpiece, causing deformation and shape or dimensional errors. protruding. At the same time, it also produces jitter and scale-like ripples during the grinding process.

add to favorites Evaluate the shape of the grinding wheel Pc  

Because the surface of the grinding wheel directly affects the quality of the grinding surface, it determines the grinding performance and service life of the grinding wheel. Therefore, it is of great significance to evaluate the grounding of the wheel after trimming, and it can be used to guide the design of the wheel dresser and the dressing of the grinding wheel.

1. Ideal grinding wheel shape and its evaluation

The state of the thin abrasive cutting disc for metal can be used to predict the amount of grinding surface. In order to make the distribution of the cutting marks on the surface of the workpiece to be more uniform and reduce the roughness of the grinding surface, the grain spacing of the surface of the grinding wheel should be uniform; at the same time, in order to make the grinding particles in the grinding

The depth of the cutting marks on the surface of the workpiece is uniform, and the surface roughness of the surface is small. Therefore, the height distribution of the surface of the grinding wheel is uniform, that is, the contour is good; and in order to use the micro-knife in a semi-blunt state under appropriate grinding pressure The friction generated between the surfaces of the workpiece acts as a polishing device to obtain a grinding surface with high precision and small roughness, achieving high precision, small roughness, and grinding. Therefore, the particles on the surface of the grinding wheel should have the micro-knives described above. The ideal wheel has the three characteristics of uniformity, uniformity and micro-blade.

The ideal evaluation of the quality of the grinding wheel is as follows. The ideal wheel topography should have three characteristics. In order to make the abrasive grain distribution on the surface of the grinding wheel uniform, the surface of the thin flat cutting disc should obey the following two directions.

Uniform distribution on the uniform distribution of abrasive grains in the width direction of the grinding wheel and uniform distribution of abrasive grains in the circumferential direction of the grinding wheel
add to favorites Basic characteristics of the grinding wheel Pc  
No Picture

The intrinsic quality of diamond grinding wheel is mainly affected by abrasive, particle size, concentration, binder, filler and hardness and strength. Electroplating Ni-based bonding agent, high strength, large abrasive holding power, good shape retention of thestandard cut off wheel for metaland long service life, but its self-sharpness is poor and the adaptability is poor. Resin bonding agent: low strength, small abrasive holding force, abrasive grain Good properties, sharp surface of grinding wheel, high grinding efficiency: but not wear-resistant, low life; metal bond, grinding performance between electroplating and resin bonding agent, good overall performance.

The coarse grain size of the diamond will reduce the cutting wheel load, improve the cutting efficiency, and extend the life of the grinding wheel, but the collapse is large; the fine particle size will reduce the cutting and fracture, and reduce the surface roughness: but the life is short. The grinding wheel has a high concentration: the grinding wheel has a large number of abrasive grains, a single abrasive grain has a small grinding force, wear resistance, and the grinding wheel has a long service life: but it should not be too high. Filler is also the main method to improve the performance of the 7" cut off disc for stainless steel Adding alloy powder can improve the rigidity and wear resistance of the grinding wheel, and adding ordinary abrasive grains can improve the sharpness of the grinding wheel. The hardness and strength of the grinding wheel are high: the abrasive grain is not easy to fall off, and the wear life is high: but the sharpness of the grinding wheel is poor: it is easy to affect the quality of the grinding workpiece. For specific use, adjust according to different grinding conditions: to adapt to its comprehensive grinding performance.

The geometric accuracy of the grinding wheel has little effect on ordinary grinding, because the working face of the grinding wheel often has to be repaired on the machine. When the electronic components are precision cut and ground, the thickness of the ultra-thin grinding wheel is no longer trimmed, so the geometric accuracy of the cutting and the accuracy of the shape and position must also be taken seriously. The difference between the thickness of the grinding wheel and the large impact of the end face affects the cutting precision: there is competition; the inner hole of the grinding wheel is too large, the inner and outer circle concentricity is not good, and the grinding vibration is easy to occur: the workpiece is collapsed; the flatness of the grinding wheel is poor, the symmetry is poor, The difference in the perpendicularity between the outer circle and the end surface is likely to cause the cutting and eccentricity of the cutting: a beveling phenomenon occurs. In order to further improve the grinding and cutting effect of the grinding wheel, the optimization of the grinding wheel structure can also have a certain effect. For example, if the side back angle is set on both sides of the grinding wheel: it is beneficial to improve the cutting precision; the outer circle of the grinding wheel is provided with an arc: it can improve the cutting and collapse; the water tank is set in the outer circle of the grinding wheel to improve the chip removal ability: reduce the grinding temperature: However, the impact of the wheel with the sink and the workpiece can not be underestimated.