High-speed grinding wheel hardness

Domestic and international data show that high-speed grinding infeed amount than ordinary grinding doubled. Better conditions for cooling high speed cylindrical grinding, the infeed amount than ordinary grinding infeed amount slightly increased a little. In developing this specification, the amount of selected infeed infeed grinding in general within the range of 1.52 to the amount of times.
No feed diamond polishing cup speed V at the time of sand to improve the conditions, make the contact time of the grinding wheel and the workpiece becomes shorter, so that the elastic deformation of the workpiece will be reduced, thereby eliminating the time of elastic deformation of the workpiece will be reduced.
Therefore, compared with the conventional grinding without feed grinding time, no time should be shorter feed grinding at some of the high-speed grinding.
Centrifugal wheel wheel operation is selected as F = mV2 sand r (2) From (2), the centrifugal force is proportional to the square of the speed V and the wheel sand. When the wheel speed increases from 35m / s to 60m / s, the centrifugal force will increase 2.93 times, which requires high-speed grinding wheel should have sufficient strength at that high speed grinding wheel binding agent should have sufficient bonding capacity . Therefore, when selecting the high-speed wheel-binding agent in the choice of the adhesive ability of vitrified (V). Workpiece material to be ground due to hardened bearing steel GCr15, abrasive should use strong anti-burn ability, toughness large brown corundum (A) and white corundum (WA) mix. High-speed bench grinder wheels hardness than ordinary sand 185 wheel bearing 62001.l.6 hardness 12, so not only can increase the intensity of the grinding wheel, and can meet the requirements of high efficiency, high durability. High-speed grinding wheel size should have better formability than ordinary wheel size fine 12.