Precautions for using of grinding wheel

1, start the wheel must be 4060 seconds after the stability of speed grinding, grinding tools should stand on the side of the wheel, not on the wheel to prevent grinding wheel broken broken flying out of wounding.

2, the same piece of grinding wheel, the prohibition of two people at the same time, not allowed in the grinding wheel side grinding, grinding, the operator should stand on the side of the wheel, do not stand in front of the wheel to prevent grinding wheel crack, Occurrence of accidents, while not allowed to wear gloves operation, prohibited around the reactor operation and in the grinding laugh and slapstick.

3, grinding the standing position should be in an angle with the wheel, and the contact pressure should be uniform, non-impact grinding wheel, so as not to fragment, the grinding wheel is limited to grinding tools, not grinding heavy materials or thin iron plate and soft materials Aluminum, copper, etc.) and wood products.

4, grinding edge, the operator should stand on the side of the wheel or inclined side position, do not stand on the front wheel, while the tool should be slightly higher than the wheel center position. Not too much force to prevent slippage injury hand.

5, the wheel is not allowed to touch the water, we should always keep dry to prevent water loss after the balance, an accident.

6, does not allow grinding wheel in the larger long objects, to prevent the shattered grinding wheel flying wounding.

7, not a single hand holding the workpiece for grinding, to prevent falling off in the protective cover card broken wheel.

Transport and Storage For Grinding Wheel

Transport and Storage For Grinding Wheel

1, the grinding wheel in the transport, handling process should be handled with care, do not stress, prevent vibration and impact, and to prohibit rolling on the ground.

2, the use of the wheel unit after receiving the wheel, you should carefully check for cracks and other damage, carefully check the wheel off the surface of the relevant trademark symbol is correct, clear and complete.

3, wheel storage warehouse should be kept dry to prevent moisture, cold or hot, room temperature should not fall below 5 degrees Celsius.

4, wheel stack, stack height generally less than 1.5m, should be stored to prevent deformation of thin wheel.

Grinding wheel introduction

Grinding wheel is a circular fixed abrasive tool, which is made of abrasive and binder. The characteristic of the grinding wheel is determined by the factors such as abrasive, grain size, hardness, bond, shape, size and so on. A wide variety of grinding wheel, according to the abrasive can be divided into ordinary abrasive (corundum and silicon carbide, etc.) grinding wheel and natural abrasive super hard abrasive and (diamond and cubic boron nitride, etc.) grinding wheel; Shape can be divided according to flat shaped wheel, bevel wheel, wheel cylinder, cup wheel, disc wheel, etc., and according to the bond can be divided into ceramic grinding wheel, resin grinding wheel, rubber wheel, grinding wheel, metal.

The characteristic parameters of the grinding wheel mainly include abrasive, grain size, hardness, bond, shape, size and so on. Since the grinding wheel usually work at high speed, it should be carried out before the use of rotary test (to ensure that the grinding wheel at the maximum operating speed, not broken) and static balance test (to prevent the work caused by machine vibration). After working for a period of time, the grinding wheel should be trimmed to restore the grinding performance and the correct geometry.

Advances in resin grinding wheel processing

Recently developed for the synthesis of binder alumina ceramic grinding wheels,with the less binding agent, and increases the porosity of the grinding wheel. The composition of the components to ensure the consistency and hardness of the structure.

Advances in resin grinding wheel processing

In the current gear grinding, still in use by ordinary abrasive. But the standard abrasive and aluminum oxide ceramic product productivity has been greatly improved. Sintered ceramic and single crystal aluminum oxide, synthetic binder, and the development of new grinding technology, this progress has contributed.

In the last 10 years, more and more people use powerful creep feed grinding mode processing involute. Compared with the hitherto conventional reciprocating grinding, grinding wheel contact area is much greater, therefore, the use of the wheel must be able to withstand high pressures. Only when subjected to a sufficiently high pressure on a single abrasive grit it may become a pointed.

what type of abrasive The Grinding wheel is ?

Grinding wheel is the most important piece of a class of abrasive, then the following knowledge from the factory to talk about it grinding wheel:

Grinding wheel is to add a binder in the abrasive, the porous body through compacts made of dried and calcined. Due to the abrasive, bond and different manufacturing processes, characteristic differences between the grinding wheel is large, so the grinding process quality, productivity and economy have an important impact.

Characteristics of grinding wheel is mainly determined by the abrasive particle size, binder, hardness, structure, shape and size and other factors; abrasive wheel is the largest amount, the most widely used method of using surface rotating at high speed when used, can be of metal or cylindrical, round, flat face and a variety of other non-metallic type workpiece roughing, semi-finishing and fine grinding and grooving and cutting and so on.

The press can be divided into ordinary abrasive abrasive (corundum and silicon carbide) abrasive grinding wheel and the natural and super abrasive (diamond and cubic boron nitride grinding wheel) wheel; according to the shape can be divided into flat-shaped grinding wheel, bevel wheel, cylindrical grinding wheel , cup wheels, disc wheel and so on; press binding agent can be divided into ceramic wheel, resin wheel, rubber wheel, metal grinding wheel. The main parameters of the abrasive wheel, viscosity, hardness, binding agents, shape, size and so on.

In the production process to use diamond grinding wheel on the belt, the general grinding wheel is necessary to remove the cleaning operation for 5-7 days, there is grinding down rubber crumbs above, after the high temperature friction and firmly attached to the diamond surface, it is difficult cleaning.

Cleaning requirements: (1) to environmental protection, non-one can not be a halogenated hydrocarbon. (2) can not damage the diamond grinding wheel.

How to balance the grinding wheel?

Grinding Wheel is one of the most commonly used mechanical plant equipment to the product, its installation is reasonable, safe and correct use of and compliance with safety procedures, etc., this series of problems are directly related to the security of each operator Therefore in practical applications we have enough attention.
Installation inaccurate result does not coincide with the center of gravity of the rotary shaft of the wheel, the wheel face in this difficult balance, to manage the balance of the face, please refer to the following recommendations:
Grinding Wheel Face unbalanced performance has two main aspects, the vibration caused by high speed rotation of the wheel, causing the workpiece surface polygonal chatter; on the other hand mainly in the imbalance accelerated spindle vibration, bearing wear, and in severe cause wheel breakage.
So to go through plastic wheel trim can only be used if found Face imbalance should be promptly repaired. Prevent wheel end surface of the inner end collision, so be careful to adjust the table to the left stopper.
Adjustment is done in accordance with the length of the hole on the next major axis mark, in the case of non-rotating grinding wheel and the workpiece, first with the left stopper coarse table travel, then stop screw iron on trimming, reaching into the end face of the pottery wheel workpiece undercut after the reverse.

The metal sintered centerless grinding wheel

Metal bonded grinding products with high efficiency, Good self-sharpening wheel, allowance, strong grip on the abrasive ability, wear resistance and other characteristics.

Products Introduction

Features: Metal bonded grinding products with high efficiency, Good self-sharpening wheel, allowance, strong grip on the abrasive ability, wear resistance and other characteristics.

The main target: Processing of optical glass, crystal, glass, precious stones, agate, sapphire and other materials.

Productions of sintered metal wheel products are: sintered centerless grinding wheel, cylindrical grinding wheel, grinding wheel periphery, bronze cutting, sintered bronze disc ,etc.

Juchuang Abrasive offers a variety of bronze bonded grinding wheel.

Diameter range: φ10-500mm, Thickness Of Wheel: 0.5-400mm, Grit size: 30/35-w3.5, offer the special wheels as customer’s requirements.

The important role of binding agent in the manufacture of grinding wheel

Binding agents may be attached to the abrasive wheel using a variety of materials, and the nature of the type of binding agent directly affects the grinding wheel hardness, strength. Since the grinding wheel grinding carried out in high-speed rotation, and is in high temperature, high pressure, high impact loads as well as under conditions of strong corrosive fluid cutting work, so the strength of a solid abrasive paste, binder itself heat, corrosion resistance , has become an important requirement for binding agents.

Commonly used grinding wheel bond the following three:

Inorganic binder, commonly used ceramics.

Organic binding agent, commonly used resin and rubber.

Metal binding agent for part of the diamond and boron nitride grinding wheels.

For example vitrified, with its bonded grinding wheel, its stable physical and chemical properties, the gap more, can better maintain the geometry of the grinding wheel, cold, hot, dry, wet adaptation, and are not afraid water, oil, acids, alkalis, the price is cheap, so widely used. But the use of vitrified bonded grinding wheel brittle texture, lack of flexibility, can not withstand the impact of large and twisted side pressure, not manufacturing thin grinding wheel peripheral speed of the grinding wheel is generally only 35m / s or less. Each binder has the advantages of its use, the user has the choice of targeted, in order to play a role in a full range of applications.

History of Grinding Wheel

Everything is step by step developed from the wheel is no exception, and the wheel is how it evolved? I do not know, right? I do not know to look down with me! Mastered the history of the grinding wheel, the wheel for the purchase and application are beneficial.

As early as the Neolithic Age, humans had already started to use natural millstone processing knives, axes, bone, horn, and tools such as a tooth; a long time ago, humans have found a natural abrasive and clay combination firing ceramic wheel; 1900, the advent of artificial abrasives, using artificial abrasive wheel manufacturing all kinds have been produced to create the conditions for the rapid development of grinding and grinding machines. Thereafter, the abrasive grinding wheel gradually increase the proportion.

At present a lot of production of metal products in the world, therefore, belongs to the hardware industry category wheel naturally played a crucial role in strengthening the wheel of production process innovation, improve production technology, product innovation capability of enterprises to open restricted and enterprise technology level "bottleneck" in a timely manner the new grinding wheel used in existing equipment business, extending its technical life, enhance its effectiveness in the production source to ensure product quality.

As in recent years, China's rapid economic development, technological innovation of the wheel has been strengthened in the future it will become China Abrasives category accounted for the largest product category, and because of the unique advantages in the grinding wheel industry chain late, great to promote the application of the polishing wheel in. According to the analysis, to 2015, China will surpass France as the world's largest abrasives market, initial estimates, our products will occupy abrasives Abrasives world demand for additional products 3/5, as abrasives and grinding wheels one of the major product categories, is also facing a good development situation.

Factors which can affect the grinding wheel speed

Grinding has a long history, with the emergence of a large number of fresh material and application has brought an unprecedented breakthrough for the future of the show. Diamond grinding process is a more complex process, multivariable interaction process, always changing them, diamond grinding wheel is removed quantitative workpiece material to obtain a higher surface quality and precision.

Wheel speed on the line is more complex when the wheel was increased from 28.8m / s to 33.6m / s when the speed increased only 16%, while the blocked amount increased threefold. Because of the increased wheel speed of the abrasive grains of the maximum depth of cut is reduced, chip cross-sectional area decreases, while the number of cutting and grinding heat increased so that clogging increases. But when high wheel speed to a certain extent (eg reach 50 m / s or more), the amount of clogging wheel but declined significantly. So choose the best to avoid wheel speed 20m / s to 50m / s this speed grinding.

Practice has proved that diamond grinding wheel speed to prepare, wheel loading increased threefold, so the higher the speed of the workpiece, abrasive load rain, abrasive cut more shallow depth, the cutting cross-sectional area decreases, while grinding thickness increases, heavier abrasive passivation, increase the grinding wheel on the workpiece extruded layer, a diamond wheel corresponds to harden characteristic change occurs, thus resulting in the clogging of the grinding wheel.

Wheel size, hardness, structure and wheel speed grinding methods to optimize the grinding process to establish a reasonable grinding parameters and summed up the law, it is an effective way to guide the production, but also grinding technology research should focus on the content.

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