Application in other special grinding

(1) The resin grinding wheel is used to grind the rail, and the rail is polished on the special rail grinding train.

(2) With conductive resin grinding wheel, some high hardness parts, such as various cemented carbide cutting tools, measuring tools, extrusion wire drawing dies, rolls, etc., as well as small holes, deep holes, thin-walled cylinders, slender rod parts and complex parts that are difficult to be machined by ordinary grinding, are processed on an electrolytic grinder

Electrolytic grinding is carried out for parts with profile. Electrolysis accounts for 95% of the processing capacity. The machining effect of abrasive only accounts for 5%. Therefore, electrolytic grinding is more efficient than ordinary grinding.

(3) Use PVA (polyvinyl alcohol) polishing wheel, PU (polyurethane) polishing wheel and non-woven polishing wheel to polish stone, glass and stainless steel on the polishing machine.

(4) Fine grinding and polishing grinding wheel used in tape recorder head, clock and instrument industry, such as FBB (water-resistant polyvinyl alcohol) grinding wheel, etc.

Organic abrasives are widely used, with certain elasticity, high bonding strength and good polishing performance. It has been applied in rough, fine, fine and polishing grinding processes. Its resin grinding tool has the following characteristics:

1. High bonding strength

Compared with ceramic bond, resin bond has high bonding strength, the linear grinding speed of resin grinding wheel is 80 ~ 120m / s, and can bear large grinding pressure. The grinding pressure of heavy-duty grinding wheel is up to 10 × 104~40 × 104n is widely used in iron and steel industry, such as various raw grinding processes such as ingots and billets. Rough grinding such as high-speed heavy load special grinding wheel has safe operation, is suitable for high-speed grinding and large feed grinding, and has high grinding efficiency.

2. It has certain elasticity

Compared with ceramic abrasive tools, resin abrasive tools have good toughness, plasticity and ductility. Its elastic modulus (E) is dozens of times lower than that of ceramics. Therefore, resin grinding tools are suitable for preparing flake grinding wheels and high-speed cutting grinding wheels of various specifications. At the same time, due to certain elastic deformation, they can buffer the grinding force. Therefore, they have good grinding effect, polishing effect and improve the roughness of the machined surface.

3. It can be made into abrasives with various complex shapes and special requirements

Due to the low hardening temperature of resin bonded abrasives, they can be hardened at room temperature and have small shrinkage. They can be made into abrasives with various complex shapes and special requirements. Such as: glass fiber reinforced resin grinding wheel, porous resin grinding wheel and grooved grinding wheel with easy chip removal and good heat dissipation; Bolt fastening grinding wheel, electrolytic grinding wheel and polishing grinding wheel to improve grinding process conditions; And cylindrical, bowl, butterfly and other special-shaped grinding wheels.

4. Wide application range

Due to the variety of new resin binder, it can be made into resin abrasives with various strengths and properties. Therefore, it can be widely used in raw grinding, rough grinding, cutting, semi fine grinding, fine grinding, polishing and other processes. Resin Abrasives have high bonding strength, high service speed and impact resistance. They are suitable for rough grinding and raw grinding; Resin Abrasives have good toughness and are suitable for cutting processes; Resin Abrasives have good elasticity and certain polishing, and can be used for fine grinding and polishing. Resin Abrasives have low heat resistance and are easy to wear. They are suitable for surface grinding and finish grinding.

5. It is beneficial to prevent the workpiece being ground from being burned

The heat resistance of resin bond is low, which can reduce or avoid the phenomenon of burning workpieces. The heat generated in the grinding process of the workpiece first carbonizes the resin, promotes the passivated abrasive to fall off automatically, exposes new sharp abrasive particles, reduces the heat in the grinding area and avoids workpiece burns.

6. Resin abrasive tools have low hardening temperature, short production cycle and simple equipment

It is conducive to professional production. The disadvantages are:

(1) Resin abrasive tools have poor alkali resistance and water resistance and are easy to aging. Generally, the effective storage period is one year. Therefore, they cannot be stored for a long time.

(2) Resin Abrasives have low heat resistance and large wear during grinding, so they are not suitable for shaping grinding.

(3) Resin Abrasives have low porosity and smell during processing. Attention should be paid to environmental pollution.