Buying a Grinder: the Abrasive Process

BY Barry Rogers, President of Alpha Strategies

The prospective buyer of a new grinding machine should be aware of the ins and outs of the abrasive process, how abrasive bonds work and the various forms of wheel dressing.

Grinding is an abrasive machining process that uses a grinding wheel as the cutting tool. A grinding wheel consists of hard, sharp-edged particles. When the wheel spins, each particle acts like a single-point cutting tool.

Grinding wheels are available in a multitude of sizes, diameters, thicknesses, grit sizes and bonds. Abrasives are measured in grit or particle size and range from 8-24 grit (coarse), 30-60 (medium), 70-180 (fine) and 220-1,200 (very fine). Coarser grades are used where relatively high volumes of material must be removed. Finer grades are generally used after a coarser grade to produce a smoother surface finish.

Grinding wheels are made from a variety of…(Read the complete article on MMS Online) 

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