| Specific material removal rate Qw' (Q-prime) |
| The specific material removal rate Qw’ indicates how much material in cubic mm one (1) mm width of grinding wheel can remove in one (1) second. As it always refers to one (1) mm width of grinding wheel and the same unit of time, direct performance comparisons can be made between different types of grinding wheels and grinding processes.
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Guideline for Qw’
Generally the Qw' rates of CBN processes are considerably higher than diamond processes. When grinding tungsten carbide with diamond wheels, the specific tungsten carbide composition plays a major role regarding material removal rates.
| 0.3 to 0.8 mm3/mm/s |
Fine finishing |
| 0.8 to 1.5 mm3/mm/s |
Finishing |
| 3.0 to 5.0 mm3/mm/s |
Target value |
| >10.0 mm3/mm/s |
High performance grinding using neat oil | |
