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The fast 9'' grinding wheel is mainly divided into a resin grinding wheel, a diamond grinding wheel and a stainless steel grinding wheel. Today we mainly talk about the characteristics of diamond grinding wheels, including diamond abrasives, particle size, concentration, binder and shape size.

Use of the fast 9'' grinding wheel

Due to the unique characteristics of diamond abrasives (high hardness, high compressive strength and good wear resistance), diamond grinding wheels are an ideal tool for grinding hard and brittle materials and hard alloys in grinding.

The fast 9'' grinding wheel not only has high efficiency, high precision, good roughness, low grinding wheel consumption, long service life, and can also improve working conditions. Therefore, it is widely used in low-iron content metal and non-metal hard and brittle materials which are difficult to process with ordinary grinding wheels.

If you are interested in the knowledge of the grinding wheel, you can continue to pay attention to us. You can also send us a message and look forward to hearing from you.

In 2016, we applied for a patent for a high quality metal grinding disc.

The invention belongs to the field of coated abrasives, and discloses a surface-polished diamond grinding disc, wherein the polishing abrasive layer is bonded to a substrate, wherein the polishing abrasive layer comprises 20 to 50 parts by weight of diamond powder, 20 to 40 parts by weight of a binder, and 10~30 parts by weight of filler is prepared. The invention also discloses a preparation method of the diamond grinding disc.

The invention uses the diamond micropowder as the polishing abrasive, the inherent high hardness, wear resistance and high thermal conductivity of the diamond, greatly improving the sharpness and the service life of the grinding tool; and the electric driving tool such as the electric angle grinder can be installed for polishing and grinding. The working environment is highly adaptable, and the processing efficiency is higher, and the precision is significantly improved compared with the flocking grinding disc, and is suitable for polishing and polishing various non-metal materials.

Sovereign item: a surface-polished diamond grinding disc comprising a substrate and a polishing layer, wherein the polishing layer is bonded to a substrate, the polishing layer consisting of 20 to 50 parts by weight of diamond powder, 20 It is prepared by using 40 parts by weight of a binder and 10 to 30 parts by weight of a filler.

It is quite dangerous to use the high efficient metal abrasive disc to break, I think it is necessary to talk to you, so that you can avoid this situation in the process of using it later, waste unnecessary time and avoid some safety hazards.

The main reasons for the fracture of the cutting piece are as follows:

1. The cutting piece itself has quality problems, such as poor flatness of the cutting piece, uneven structure of the cutting piece, high hardness of the cutting piece, and lack of toughness of the cutting piece resin.

2. The operation method is not correct. For example, the wire speed of the cutting piece is only 72m/s, and the operator installs the cutting piece on the cutting machine with the line speed of 80m/s.

3. Carelessness, the cutting piece is installed to be idling (that is, there is no workpiece to run) for one minute. In this process, the quality of the cutting piece and the hole diameter of the cutting piece and the cutting table shaft can be detected.

4. Before use, the cutting piece has undergone a more serious collision. Although it is relatively complete on the surface, its internal structure has been destroyed, and such a cutting piece is relatively easy to break during work.

Therefore, we must choose a good quality cutting piece when selecting the cutting piece. The inferior cutting piece is more likely to cause safety hazards, and the cutting piece is recommended to be purchased nearby.

The working layer of the resin diamond cup type fast 9'' grinding wheel is composed of a diamond and a resin binder. The main component of the resin binder is a resin and an auxiliary material, which is mixed with the diamond powder, and is heated and solidified by pressure to form a resin diamond grinding wheel which is firmly combined with the substrate.

Diamond grinding wheels are superhard abrasives, which are generally used to process high hardness and high brittle materials such as hard alloys, ceramics, glass, semiconductor materials and stone.

The advantages of the diamond cup type grinding wheel produced by our company are as follows:

a. Strong grinding ability, good wear resistance, high durability, easy to control the processing size and automatic processing.

b. Small grinding force, low grinding temperature, good surface quality, no burns, cracks and tissue changes. When the diamond wheel grinds the cemented carbide, the grinding force is only 1/4~1/5 of the green silicon carbide grinding wheel.

c. High grinding efficiency. When machining hard alloys and non-metallic hard and brittle materials, the metal removal rate of diamond grinding wheels is better than cubic boron nitride grinding wheels; but when processing heat-resistant steel, titanium balance, mold steel, etc., cubic boron nitride grinding wheels are far higher For diamond grinding wheels.

d. Low processing costs. Diamond grinding wheels and cubic boron nitride grinding wheels are relatively expensive, but because of their long life and high processing efficiency, the overall cost is low.

The depressed grinding disc in stock and grinding wheels are one type of tools. Diamond tools are tool products that use a bonding agent to consolidate diamond (generally referred to as synthetic diamond) into a certain shape, structure, size, and for processing. Broadly speaking, diamond abrasive pastes, rolling saw blades, cold-set diamond wire drawing dies, cold-set diamond knives, brazed diamond composite knives, etc., are also diamond tools.

In terms of product types, China's diamond tool companies mainly produce: diamond saw blades, diamond drill bits, diamond bowl mills and diamond cutters, diamonds, diamond resin grinding blocks and other products. Among them, the diamond saw blade is a large variety of diamond tool enterprises in China.

1. According to the bonding agent, there are three categories: resin, metal and ceramic bond diamond tools. Compared with the metal bond carcass, the resin and ceramic bond carcass have low strength and are not suitable for sawing, drilling and dressing tools, and generally only abrasive products.

2. According to the metal bond process is divided into: sintering, electroplating and brazing and other categories.

3. According to the structure of use, there are:

a. Abrasives - grinding wheels, rollers, rollers, grinding wheels, grinding discs, bowl grinding, soft grinding discs, etc.;

b. Sawing tools - circular saw blades, row saws, wire saws, band saws, band saws, chain saws, wire saws;

c. Drilling tools - geological metallurgical drill bits, oil (gas) well drill bits, engineering thin-wall drill bits, stone drill bits, glass drill bits, etc.;

d. Other tools - dressing tools, knives, wire drawing dies, etc.

Diamond is hard, so the tool is especially suitable for processing hard and brittle materials, especially non-metallic materials, such as stone, wall tiles, glass, ceramics, concrete, refractory materials, magnetic materials, semiconductors, precious stones, etc.; can also be used for processing colored Metal, alloy, wood, such as copper, aluminum, hard alloy, hardened steel, cast iron, composite wear-resistant wood. At present, diamond tools have been widely used in construction, building materials, petroleum, geology, metallurgy, machinery, electronics, ceramics, wood, automotive and other industries.

Due to various reasons in the manufacture and installation of diamond depressed grinding disc in stock, the center of gravity of the diamond grinding disc often does not fit with its center of rotation. This will cause the grinding disc to vibrate at high speeds, which will affect the processing, and will cause the diamond cutting piece to break when it is severe. And the machine tool is damaged, so the diamond cutting disc must be statically balanced after it is mounted on the flange. After the diamond grinding disc is mounted on the flange, the flange is placed on the mandrel and placed on the gimbal rail.

If it is unbalanced, the heavier part of the cutting piece will always turn to the bottom, move the balance block position inside the ring tip of the flange, balance the center of the cutting piece, and repeat until the disc is on the rail. Can be stationary, at this time the cutting piece reaches a static balance. When installing a new cutting piece, the depressed grinding disc in stock should be statically balanced twice. After a static balance, install the grinder and trim the shape of the cutting piece with a diamond pen, then remove the grinding disc and perform a static balance before installation.

The impact of the normative operation on the cheap grinding disc

Operators sometimes do not follow the process requirements. For example, the amount of feed is specified to be 2 wires per time, and some operators have to increase the amount of feed to 5 wires per time in order to catch up with the output. In this way, the grinding disc is difficult to work normally, the workpiece is easy to cause burns, and some burn surfaces do not show blue burn marks, but in fact the hardness of the workpiece has been lowered, which has a great influence on the quality of the workpiece.

The effect of diamond dresser on the grinding disc

The normal line of the diamond pen and the diamond grinding disc should have an angle of 15°. The diamond pen can rotate several faces to keep the sharpness for a long time. If the diamond pen is blunt, it will not be checked and replaced, and the grinding disc is still being repaired. Imagine that the quality of grinding is not good.

The impact of the maintenance work of the grinding machine on the grinding disc

According to the safety maintenance requirements, the machine needs regular maintenance. If the maintenance work is not taken seriously in order to save expenses, the machine condition is not good, such as the spindle accuracy is degraded or the bearing is excessively worn, which will have a very adverse effect on the grinding.

There are many quality problems in the production process of resin fast grinding wheel for stainless steel. Since the manufacture of resin grinding wheels is a multi-disciplinary synthesis of composite materials, the causes are complicated and numerous.

Raw material problem

Resin fast grinding wheel for stainless steel is a complex system composed of a variety of main and auxiliary raw materials. As long as the material is abrasive and bonding agent, the auxiliary material includes filler, reinforcing material, coloring agent and the like.

Problems that should be paid attention to in the abrasive aspect of the grinding wheel.At present, the quality of abrasives on the market is uneven, mainly as follows:

A. The chemical composition of the abrasive of the diamond grinding wheel is often qualified, but the physical properties are poor; mainly manifested in the gap between the bulk density of the abrasive and foreign countries.

B. The grain size composition of the abrasive wheel of the fast grinding wheel for stainless steel is chaotic, which is quite different from the standard specification; the main performance is that the basic particle content of the same grain size abrasive has a gap with foreign countries.

There are more and more companies investigating diamond grinding wheel made in China, but The diamond grinding wheel has the following basic properties:

1. Has sufficient stability and rigidity;

2. No vibration is generated to avoid the cutting edge being broken;

3. The spindle has sufficient power;

4. The grinding force can be adjusted;

5. Diamond grinding wheel made in China with special performance;

6. There is sufficient coolant supply.

Some equipment is also equipped with spindle shifting, automatic grinding of the grinding wheel, tool microscope and automatic tool nose radius processing. Grinding is essentially a process in which a large number of abrasive particles randomly distributed on the surface of the grinding wheel are cut.

Due to the extremely high hardness and wear resistance of super-hard materials such as diamond and cubic boron nit-ride, the grinding mechanism is largely different from that of general metal materials. The system studies the loss mechanism of diamond grinding wheel made in China in the process of grinding super-hard materials, which has guiding significance for the rational selection and use of the grinding wheel.

fast 9'' grinding wheel

In recent years, the development of the fast 9'' grinding wheel has become faster and faster. In particular, the use of resin grinding discs is more extensive. The fundamental reason is that it is inseparable from the unique properties of resin grinding discs. Because the resin grinding discs have High bonding strength, can be used at higher speeds, can withstand large grinding pressure, and is widely used in the burr and rough grinding of steel and foundry industries. So, today, talk about resin grinding wheel cutting What to pay attention to when replacing a piece.

1. Resin fast 9'' grinding wheel wear: Any grinding wheel cutting piece has its own wear requirement. If the wear condition reaches a certain level, it must be replaced with a new one. It cannot be used for saving materials, and it is extremely unsafe. Behavior. Generally, when the resin grinding wheel is worn to a diameter 10 mm larger than the diameter of the chuck, it should be replaced with a new one.

2. The fast 9'' grinding wheel validity: The new grinding wheel from the warehouse is not necessarily qualified. Even the new one from the manufacturer is not necessarily qualified. Any grinding wheel cutting piece has a certain effective period and is used within the effective period. It is Qualified; if it is used beyond the expiration date, it is not necessarily qualified.

3. The fast 9'' grinding wheel texture: the use process, if the grinding wheel appears locally cracked, should immediately stop using, replace the new grinding wheel cutting piece, so as not to cause the grinding wheel cutting piece broken and injured.

The above is what you should pay attention to today for the replacement of the resin grinding wheel cutting piece. If you want to know more details, please contact us! We will be happy to help you! Tel: +86 15617985439.

When it comes to the fast working grinding wheel, it is often used in some workshops. It belongs to the grinding wheel and is made of abrasive and binder resin for ordinary steel, stainless steel and non-metal. The grinding wheel cutting piece is widely used. Ordinary steel, stainless steel metal and non-metal production and cutting materials, excellent materials and exquisite craftsmanship ensure high cutting efficiency and best economical effect on different material workpieces. However, the characteristics of the fast working grinding wheel will also have some performance on the grinding wheel. Impact, so, today Henan abrasives manufacturers come to talk to you.

1. Abrasive material: commonly used abrasives for the fast working grinding wheel are brown jade (A), white corundum (wA), black corundum (BA), black silicon carbide (c), etc. The most commonly used is brown fused alumina, because brown fused alumina has high hardness. It has the characteristics of high toughness, sharp particles, strong applicability and low price compared with other abrasives.

2. Abrasive grain size: common particle size is: 22#-80#, the cutting efficiency is low when the particle size is fine.

3. The fast working grinding wheel hardness: common hardness: P, Q, R; N, S; generally use harder grinding wheel to reduce grinding wheel wear. Its hardness is controlled by factors such as binder, molding density, firing temperature and firing time.

4. Bonding agent: common resin binders are: powdered phenolic resin, liquid phenolic resin. Powdered phenolic resin has good processability, the molding density of abrasive tools is slightly smaller, the tissue number is slightly larger, and the price is higher than liquid phenolic resin; liquid phenolic resin The price is low, but it is easy to agglomerate and the mixed materials are not easy to be uniform, which is easy to cause the abrasive tools to be partially hard.

5. Organization: The organization number of the fast working grinding wheel should be slightly larger to improve the cutting efficiency: too big and affect the strength. The commonly used organization number is 3~7.

From the above-mentioned Henan abrasives manufacturers, we can know that various abrasives are suitable for different materials to be cut. Therefore, different cut materials have a great influence on the cutting performance. Under normal circumstances, when cutting materials with high tensile strength, Corundum abrasive particles; when cutting materials with low tensile strength, use silicon carbide abrasive. Users can choose the appropriate fast working grinding wheel to cut different materials according to their own needs.

When it comes to the depressed grinding disc in stock, it is a grinding disc made of resin, which has high strength and is applied to cutting piece, double end face, heavy load grinding disc, polishing disc, etc. It has certain elasticity, low heat resistance and good self-sharpness. Simple and short process cycle; widely used in rough grinding, rough grinding, cutting and free grinding, such as grinding steel ingots, casting burrs, etc. What are the performance and application of resin grinding discs in the following grinding disc ultra-thin manufacturers?

1. The resin binder is an organic binder. The binder produced by the binder has high strength, certain elasticity, low heat resistance, good self-sharpness, simple production, short process cycle, and high manufacturing speed. 50m/s grinding disc and very thin depressed grinding disc in stock. Its application range is second only to ceramic bonding agent, widely used for rough grinding, rough grinding, cutting and free grinding, such as grinding steel ingots, casting burrs, etc. High-gloss grinding disc, heavy load, cutting and grinding discs with special requirements.

2. At the same time, the depressed grinding disc in stock is a tool with a large demand. It is made by bonding phthalic acid and polyamide or other resin as a binder by gluing diamond or cubic boron nitride (CBN) abrasive with inorganic filler. A tool that is being used effectively in a variety of grinding operations, such as surface grinding, centerless center grinding, slotting and internal grinding. It is used in super heat resistant stainless steel, metal. An ideal grinding tool for ceramics, ceramics, glassware, limonite, high speed steel, alloy tools and many other new superhard materials.

Nowadays, there are many special depressed grinding disc in stock for fast cold cutting. These discs are especially suitable for the grinding of carbide tools (such as saws, cutters, drilling tools, end mills, etc.). In addition, these tools It can also be used for precision grinding of cemented carbide molds, rollers and carbonized wear parts. Resin-bonded grinding discs are the first choice for the precision machining of ceramics and the thermal spray coating of tungsten carbide and ceramic products. The depressed grinding disc in stock can also be used in conjunction with CBN. For grinding high speed steel, tool and die steel and superalloys above FtRC50.