Version 1.0, August 31, 2001, Copyright, Hugh Jack 1993-2001
· The wheels are typically made with a bonded abrasive.
· Grain size is typically from 6 to 600.
· The bonding mechanisms used commonly are,
· The Grade of the wheel is a measure of the ability to retain grit. If a wheel is Grade A it is soft, if it is Grade Z, it is very hard.
· The wheels are also given a structure number. 1 indicates a dense structure, whereas, 15 indicates an open structure.
· Loading of a wheel refers to the embedding of swarf in the voids.
· Glazing occurs when the grit has dulled, but is still bonded to the surface.
· Grinding wheels should undergo a dressing process.
· Many grinding wheels are shaped. This shaping is done while the wheel in the machine using diamond, or other hard shaping tools.