Manufacturing And Production Technology
Tool life is generally better when

Hard constituents are present in the micro-structure of the tool material
None of the listed here
Grain size of the metal is large
Grain size of the metal is small

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Manufacturing And Production Technology
Glazing in grinding wheels can be decreased by

Using a harder wheel or by decreasing the wheel speed
Using a softer wheel or by increasing the wheel speed
Using a harder wheel or by increasing the wheel speed
Using a softer wheel or by decreasing the wheel speed

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