The Type of Abrasive Cut-off Wheel

 According to the different bond Abrasive wheel is mainly divided into ceramic, rubber and resin. Among them, ceramic bond abrasive wheel has high strength, good heat resistance, sharp cutting, high abrasive efficiency, abrasive process is not easy to heat and plug, thermal expansion is small, to control the machining accuracy. More elastic than resin binder, good polishing performance, not easy to burn the work piece when used, especially suitable for fine abrasive or polishing process.

 

What we are talking about today is resin bond abrasive wheel, which is also more common. Before talking about resin, let's first understand the general introduction of abrasive wheel. That is also known as the consolidated abrasive tool. It is a consolidated it with a certain strength that consolidates ordinary abrasive materials into a certain shape (mostly round, with a through hole in the center) by the binder. It is generally composed of abrasives, binders and pores, which are often called the three elements of consolidation abrasives. It is a kind of abrasive tool with the largest amount and the widest use surface. It can be used for rough thing, semi-finishing, slotting and cutting of outer circle, inner circle, plane and all kinds of surface of metal or non-metal work piece with high speed rotation.   

(From left to right, ceramic, rubber and resin)     

 

Compared with ceramic bond, resin bond CBN abrasive wheel has higher bonding strength, the line speed of resin bond CBN is 80~120m/s, and can bear larger abrasive pressure. Compared with ceramic , resin bonded abrasive wheel has good toughness, certain plasticity and ductility, and is suitable for preparing various specifications of wafer wheel and high-speed cutting wheel. Because of certain elastic deformation, it can buffer the action of force, so the effect is good, and the polishing effect can improve the roughness of the machined surface. Due to the low hardening temperature of resin, it can be hardened at room temperature and has small shrinkage rate, so it can be made into various abrasive wheels with complex shapes and special requirements. It is helpful to prevent the work piece from being burned. Resin bond heat resistance is low, the work piece in the process of the heat, so that the resin carbonization, promote the passivation of the abrasive off automatically, exposing the new sharp abrasive, reduce the heat in the abrasive  area, avoid work piece burn. However, compared with other bonded abrasive  wheels, resin wheel has the following shortcomings: poor alkali resistance, water resistance, easy aging; Low heat resistance, large wear, not suitable for shape forming abrasive ; Low porosity, processing smell, easy to cause environmental pollution problems.

 

The above is some introduction of resin bond abrasive wheel. Further understanding is needed for the research of the other two kinds of ceramic and rubber.

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