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Diamond grinding wheels
Diamond grinding wheels99 Innovator in TechnologyBondThere are three alternative bonding methods: resinoid bond, metal bond, and vitrified bond.• Resinoid bondResinoid bond grinding wheels are manufactured by using resinoid bonds to bond diamond grits.There are two types of resinoid bonds: the phenol resin type and the polyimide resin type. The phenol resin type is currently in more common usage.Resinoid bond grinding wheels have good elasticity, fine surface finish, and high grinding performance. They are effective for:(1) grinding of cemented carbide(2) combination grinding of cemented carbide and hardened steel(3) grinding of cermet(4) precision grinding of magnetic materials, glass, ceramics, etc. Polyimide wheels are recommended for heavy grinding and creep-feed grinding.• Metal bondMetal bond grinding wheels are manufactured by sintering metal powder to bond diamond grits. These wheels are superior in grit retention, and thereforepreferred:(1) when a long service life is required(2) when wear of the grinding wheel needs to be minimized (such as in form grinding)(3) in hand grinding of cemented carbide(4) in profile grinding(5) in the cutting and grinding of hard, and brittle materials such as ceramics, glass, and quartz(6) in the cutting and grinding of magnetic materials such as ferrite(7) in the cutting and grinding of stone(8) in the cutting and grinding of graphite, etc.The high grit retention quality of metal bond can also cause glazing or loading. The increase of grinding pressure and of heating due to loading maycause thermal damage to the workpiece. In order to prevent thermal damage, please choose the grinding process, conditions, coolant, dressingintervals, etc. carefully.• Vitried bondVitrified bond grinding wheels are manufactured by using vitrified bonds to bond diamond grits. As vitrified bonds are porous, vitrified bond wheels canovercome the forming and dressing difficulties encountered with resinoid bond and metal bond grinding wheels. Vitrified bond wheels are used to grindcemented carbide, sintered diamond tools, etc.