The use of calcium carbonate in resin grinding wheels

The use of calcium carbonate in resin grinding wheels: enhance wear resistance and temperature resistance, moderate hardness without damaging the mold, stable friction coefficient, and high cost performance.

Specially designed resin-bonded diamond grinding wheels are mostly used for fast cold cutting, especially for carbide grinding (e.g. chainsaws, cutters, drilling tools, end mills). It can also be used for precision grinding operations of carbide molds, rollers and carbonized wear parts. Resin-bonded grinding wheels are the abrasives of choice for precision machining of ceramic products and for grinding silicon carbide and thermal spray coatings of ceramic products.

There are usually seven or eight or more kinds of fillers added with abrasives, such as alumina, diamond, copper powder, etc., which mainly play the role of scaffolding. The main purpose of adding calcium carbonate whiskers here is to enhance wear resistance, and use the length-diameter ratio structure of the whiskers to cooperate with other high-mesh powders to make the "scaffold" stronger.

The production process of resin grinding wheels is very similar to that of brake pads, and after high-pressure molding, it usually needs to be kept warm for an hour to eliminate internal stress.

The proportion of calcium sulfate whiskers added to the resin grinding wheel is 5 10% or even slightly higher. The hardness of the filler should not be too high, and our calcium carbonate whisker hardness is moderate and meets the requirements. In addition, the grinding layer also has the requirement of a stable coefficient of friction, and our whiskers play a significant role in the stability coefficient of the brake pad.

I don't think the landlord's question is right, calcium carbonate is commonly known as limestone, in my experience in the production of resin grinding wheels are not used, and resin grinding wheels are used in the production of calcium sulfate (commonly known as gypsum), its role as a filling material in the resin grinding wheel is: to adjust the drying and humidity of the molding material, so as to improve the molding performance, improve the strength of the abrasive, and absorb moisture, reduce blistering, cracks and deformation and other waste. (Only sparse learning, the words of a family, if there is anything inappropriate, please give more advice.) ）

Resin grinding wheels and composite resin grinding wheels are both a type of grinding wheel, but their manufacturing processes, materials, and uses are different.

Resin grinding wheel is a diamond grinding wheel made of resin as the main binding agent and abrasive powder after processing. Resin grinding wheel is a commonly used grinding tool in processing, generally used in processing various metal and non-metal materials, such as steel, copper, aluminum, ceramics, marble, glass, etc.

Composite resin grinding wheels generally refer to grinding wheels made of abrasives such as alumina and zirconia by combining resins. Compared with ordinary resin grinding wheels, composite resin grinding wheels are more resistant to wear, have a longer service life, and can better handle high-hardness, high-strength materials. The composite resin grinding wheel is a high-level grinding tool in grinding processing, such as high-demand machining of high-energy forging dies.

In general, resin grinding wheels are suitable for some general processing, while composite resin grinding wheels are suitable for high-demand processing of high-strength materials.

A resin grinding wheel formulation consisting of mass fractions.

For resin binders, including diamonds.

of silicon carbide. Abrasives of white metal, cryolite, dolomite, titanium oxide and cerium oxide.

A resin grinding wheel comprises a cone portion, a grinding ring arranged at the large end of the cone table, a mounting rod arranged at the small end of the cone table, and the grinding ring is manufactured according to the above formula.

Preferably, the end of the grinding ring is provided with a chip removal concave.

The beneficial effect is: compared with the prior art, a balance of the present invention rents a kind of resin grinding wheel and a resin sand wheel formula through reasonable proportioning, can maintain the sharpness and wear resistance of the grinding wheel, improve the omen of processing efficiency and prolong the life of the grinding wheel at the same time, avoid unnecessary scrapping, reduce manufacturing cost.

and the time cost of changing tools.

Now I can only briefly tell you about the process of resin diamond.

1. Select formula, select binder, 2, select superhard abrasive, mix, sieve and let it mix together evenly, add sizing agent, resin powder, and then mix evenly, 3, aluminum matrix, and then turn processing, 4, mold assembly, 5, non-diamond layer feeding, preloading. 6. The diamond layer is fed and pre-pressed. 7, fixed mold hot pressing, 8, hardening, 9, machining, 10, inspection, 11, labeling, 12, finished product storage.

Resin bond is an organic bond, the grinding wheel made of this bond has high strength, certain elasticity, low heat resistance, good self-sharpening, easy to make, and short process cycle. Grinding wheels with working speeds of more than 50 m/s and very thin grinding wheels can be manufactured. Its application range is second only to ceramic binders, and it is widely used in coarse grinding, barren grinding, cutting and free grinding, such as grinding steel ingots, burring castings, etc.

It can manufacture high-speed, high-finish grinding wheels, heavy-duty, parting-off and various special requirements.

At the same time, the resin-glued grinding wheel is a tool that is in high demand. It is a tool made by gluing diamond or cubic boron nitride (CBN) abrasives with inorganic fillers using benzoic acid and polyamide or other resins as binders. This tool is being effectively used for a variety of grinding operations, such as surface grinding, external centerless grinding, grooving and internal grinding.

It is an ideal grinding tool for ultra-heat-resistant stainless steels, cermets, ceramics, glassware, limonite, high-speed steels, alloy tools, and many other new superhard materials.

There are a wide range of special resin-bonded diamond grinding wheels for fast cold cutting. These grinding wheels are particularly suitable for grinding carbide tools such as saws, cutters, drilling tools, end mills, etc. In addition, these tools can be used for precision grinding of carbide molds, rollers and carbonized wear parts.

Resin-glued grinding wheels are the first choice for precision machining of ceramic products as well as for grinding tungsten carbide and thermal spray coatings of ceramic products. Resin glued grinding wheels can also be used in combination with CBN for grinding high-speed steels, tool and die steels, and super-heat-resistant alloys above FTRC50.

Resin grinding wheels are generally divided into ordinary resin grinding wheels and superhard resin grinding wheels according to abrasives. Ordinary resin grinding wheels are grinding wheels with common abrasives such as white corundum, brown corundum, and silicon carbide as the main grinding components, while superhard resin grinding wheels are grinding wheels with diamond or CBN as the main grinding components.

The most commonly used in the market are ordinary resin cutting discs and ordinary resin grinding discs. Common diameters are 100, 180, 230, 300, 350, 400, 500.

The super-resin grinding wheel market mainly includes super-resin cutting discs and super-resin grinding discs, and the diameter of the common cutting discs is 100, 125, 150, 200,. Common grinding disc diameters are 150, 200, 250, 300, 400.

Resin grinding wheels are grinding wheels made of resin, with high strength, and are used in cutting hand blank pieces, double-ended faces, heavy-duty dull grinding wheels, polishing wheels, etc. It has the characteristics of certain elasticity, low heat resistance, good self-sharpening, simple production and short process cycle; It is widely used in coarse grinding, barren grinding, cutting and free grinding, such as grinding steel ingots, burring holes in castings, etc.

Resin grinding wheels are grinding wheels made of resin, such as phenolic, epoxy, polyurethane, polyvinyl alcohol, etc.; Resin grinding wheel has high strength, can add reinforcing fiber mesh and steel bar to the grinding wheel, such as cutting discs, grinding discs, most of our resin grinding wheels are not waterproof, can not be ground with grinding fluid, of course, there are some resin grinding wheels that need to be grinded with grinding fluid, such as epoxy, the grinding finish of the resin grinding wheel is good, the workpiece is not easy to burn, the resin grinding wheel is used in cutting discs, double ends, heavy-duty grinding wheels, polishing wheels, etc., the strength of resin bond grinding wheels is lower than that of metal bonds and ceramic bonds.