Grinding MCQ - Machinist(Set-1) with Answers

Resinoid bond is used for speed wheels. Such wheels are used in foundries for dressing castings. Resinoid bond wheels are also used for cutting off. They are strong enough to withstand considerable abuse.
Resinoid Bond is denoted with symbol "B".

Structure indicates the amount of bond present between the individual abrasive grains and the closeness of the individual grains to each other. An open structure wheel will cut more freely. That is, it will remove more metal in a given time and produce less heat. It will not produce such a good finish as a closely structured wheel.

For cylindrical grinding a small diameter work with fairly large wheel Hard grade wheel is used.