The performance of the binder in the abrasive tool affects its ability to react with abrasive particles and its strength. The reaction ability between the bonding agent and the abrasive particles is good, and the bonding force between the bonding agent and the abrasive particles is strong, and the abrasive particles are not easily broken or falling off. The strength of the bonding agent is high, and the abrasive particles can not only withstand higher grinding force, but also make the grinding wheel have higher rotation strength and not easy to break. In addition, when the ability of the bonding agent to react with abrasive particles is better, for the abrasive tools of the same hardness, the amount of bonding agent used can be less, so the structure of the abrasive tool is looser, which is conducive to the grinding work.

The choice of abrasive bond is mainly related to the processing method, use speed and surface processing requirements. Each bond has its own advantages and disadvantages. The type of abrasive bond should be selected according to the conditions of grinding.

①Ceramic bond (V) This kind of bond has the widest application range and can be made into abrasive tools of various particle sizes, hardness, structure, shapes and different sizes. The performance of the ceramic bond is stable during grinding, water resistance, acid resistance, alkali resistance, and oil cutting resistance are not affected by weather and temperature changes. It can be ground under a variety of grinding conditions and can also be used for dry grinding. Compared with other bonding agents, ceramic bonding agents can be made into abrasive tools with different pore sizes, such as large pore grinding wheels, tissue feeding grinding wheels, etc., which are not easily blocked by chips during grinding, so the grinding efficiency is high.

When the abrasive, particle size, and hardness are the same and the same workpiece is processed under the same conditions, the wear of the ceramic bond abrasive tool is smaller than that of other bonds, so its service life is longer.

Generally, the use speed of vitrified bond grinding wheel is below 35m/s, but it can also be made into high-speed grinding wheel higher than 35m/s, such as 50m/s, 60m/s, 80m/s or even 120m/s.

The vitrified bond grinding wheel can better maintain the shape during the grinding process, so it is suitable for forming grinding, such as thread grinding, gear grinding, template grinding and other forming grinding.

The boron-containing ceramic bond has better grinding performance than other types of ceramic bond, because it uses less bond, which can increase the porosity of the abrasive tool and make the cutting edge of the abrasive more sharp.

②The scope of application of resin bond (B) is second only to ceramic bond. It has certain elasticity and sufficient strength, and has polishing performance, and can be used for coarse, fine and fine grinding. Generally applicable to the following aspects.

Because the resin bond is easy to burn at high temperatures and has good self-sharpening properties, it is widely used in general or known desert procedures, such as cast iron burring, steel billet grinding, and surface grinding to prevent heat generation.

Resin bond is also commonly used for cutting metal materials or cutting non-metallic materials, such as thin sheet grinding wheels and ore cutting wheels.

The resin bond can also be made into high-thickness grinding wheels, guide wheels for centerless grinding and cylindrical grinding wheels for spindle surface grinders.

The resin bond has good polishing performance, and the fine-grained grinding wheel made with it can be used for fine grinding, and the surface roughness of the processed workpiece can reach Ra0.012μm.

The manufacturing process of the resin bond grinding wheel is relatively flexible, and glass fiber mesh can be added to increase the strength of the grinding wheel. High-speed grinding discs and cutting discs of 60~80m/s can be made from it, which can be used for welding or cutting.

This kind of bonding agent can also be added with graphite material or copper powder to make a conductive grinding wheel, which can obtain good results in electrochemical grinding.

③ Rubber bonding agent (R) is more flexible than resin bonding agent and can be made into a 0.2mm and thinner wafer grinding wheel for cutting off spring clips and grooving of pen tips. Rubber binder is easy to produce plastic deformation under finishing action, and the surface roughness of the workpiece after grinding is relatively low, so it is estimated to be suitable for superfine grinding or mirror grinding.

Rubber bonded grinding wheel is also commonly used to grind the inner and outer channels of the bearing. The flexible polishing wheel can be used for drill groove polishing, tap polishing, die polishing and aircraft engine blade polishing.

Rubber bonded grinding wheel has great friction to workpiece, and almost all regulating wheels used in centerless grinding machine are made of this kind of bonded wheel.

Rubber bonded grinding wheel is not suitable for rough grinding because of its tight structure, but it can maintain the shape profile better, so it can also be used for grinding the formed surface.

④ Ling magnesia binder (Mg) this kind of binder made of grinding wheel, although its bond strength is poor, but because of easy to produce new sharp abrasive, so some effect on the grinding process but better than the other bond, this kind of binder are easy to hydrolysis, generally not suitable for working under wet grinding conditions, so the application range is not wide, security is commonly used in grinding blade, farm tools, paper cutting tools and grinding grain, ground floor, grinding colloid materials (such as toothpaste, oil). When in use, the grinding wheel speed is generally within 20m/s.

⑤ Other binders such as metal binders are used to make diamond abrasives.