Grinding Wheel

 The grinding wheel is also known as the consolidated grinding tool. It is a consolidated grinding tool 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. According to the different classification of binder, common are ceramic (binder) grinding wheel, resin (binder) grinding wheel, rubber (binder) grinding wheel. Grinding wheel is a kind of grinding tool with the largest amount and the widest use surface. It can be used for rough grinding, semi-finishing grinding, semi-finishing grinding, slotting and cutting of outer circle, inner circle, plane and all kinds of surface of metal or non-metal workpiece with high speed rotation.

Grinding wheel is the most important kind of grinding tools. Grinding wheel is a porous body made by pressing, drying and roasting after adding binder into the abrasive. Due to the difference of abrasive, binder and manufacturing process, the characteristics of grinding wheel are very different, so it has an important influence on the machining quality, productivity and economy of grinding. The characteristics of grinding wheel are mainly determined by abrasive, particle size, bond, hardness, structure, shape and size.

There are many kinds of grinding wheels. According to the abrasive can be divided into ordinary abrasive (corundum and silicon carbide, etc.) grinding wheel and natural abrasive super hard abrasive and (diamond and cubic boron nitride, etc.) grinding wheel. According to the shape, it can be divided into flat grinding wheel, beveled grinding wheel, cylindrical grinding wheel, cup grinding wheel, disc grinding wheel, etc. According to the bond, it can be divided into ceramic grinding wheel, resin grinding wheel, rubber grinding wheel, metal grinding wheel, etc.The characteristic parameters of grinding wheel mainly include abrasive, particle size, hardness, bond, shape, size and so on. Since the grinding wheel usually works at high speed, the rotary test (to ensure that the grinding wheel will not break at the working speed) and static balance test (to prevent machine vibration caused by working) should be carried out before use. After working for a period of time, the grinding wheel should be dressed to restore grinding performance and correct geometry.