Types of Chips ground by grinding

When grinding, the workpiece is ground by the cutting edges of abrasive grains, discharging fine chips. Due to the distribution of abrasive grains and the relative position of each abrasive grains is random, the cutting edges of abrasive grains are different, and the materials of workpiece ground are not same, chips ground by grinding show different shape during grinding under high temperature. Chips ground by grinding are fine similarly with chips ground by turning tool and milling cutter. The chip is divided into five types as follows:

(1) Flow chip: Ribbon shape chip occurs when grinding wheel sharpness is good.

(2) Shear chip: This chip occur when grinding wheel sharpness is good.

When brittle materials are ground, chips are discharged.

(3) Peeling chip: Powder chip occurs when grinding wheel sharpness becomes dull.

(4) Built-up edge chip: Chips are adhered and accumulated on grinding wheel face and these chips are made of texture so as to be the same as built-up edge.

(5) Melted chips: These chips are spherical or semi-spherical by melting when powder chips are scattered by over-heat. This is mostly found when ground by loaded or glazed grinding wheel.