2013年7月31日星期三

Abrasive choice


 Grinder grinding high tensile strength of the material, the selection of toughness abrasive. Grinding low hardness, elongation of the material, the selection of more

brittle abrasive. Grinding material with high hardness, the selection of higher hardness abrasive. Optional material to be processed easily abrasive chemical reaction

. The most commonly used abrasives are corundum sand Lun and corundum, followed by black and green silicon carbide, chromium corundum remaining common there,

monocrystalline corundum, microcrystalline corundum, zirconium corundum. Corundum grinding wheel: corundum hardness, toughness, tensile strength suitable for grinding

Higher metals such as carbon steel, alloy steel, malleable iron and hard bronze, etc. The abrasive grinding performance, adaptability, commonly used in the resection

margin larger kibble, cheap, widely available. Corundum grinding wheel: brown just slightly higher than the hardness of corundum

Jade, toughness lower than corundum, when grinding, abrasive shatter easily, so grinding heat a small, suitable for manufacturing grinding hardened steel, high carbon

steel, high speed steel and thin-walled parts with grinding wheel, corundum high cost ratio. Black silicon carbide grinding wheel: black silicon carbide sex

Crisp and sharp, higher hardness than corundum, suitable for grinding material of low mechanical strength, such as cast iron, brass, aluminum, and refractory

materials. Green silicon carbide grinding wheel: Green silicon carbide high hardness brittle than black, abrasive sharp, good thermal conductivity, suitable for

grinding hard alloy

Gold, optical glass, ceramics and other brittle materials. Chrome corundum grinding wheel: suitable for grinding tools, measuring tools, instruments, thread and other

surface processing, high quality requirements of the workpiece. Monocrystalline corundum grinding wheel: suitable for grinding stainless steel, high vanadium high

speed steel toughness, high hardness of the material

And deformation of the workpiece burn.

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