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Showing posts from March 19, 2012

General rules which apply to Diamond wheel and CBN wheel C

Coolant It is always advisable to use superabrasives with coolant as performance is superior  (sometimes by a factor of 10 times). Many coolants are available but water with an addition of  rust preventor or soluble oil (1.5 to 2%) is often adequate. Whilst giving longer life to wheels the  use of coolant also minimises the thermal damage to the workpiece and wheel. This  guarantees workpiece integrity and dimensional accuracy by reducing heat distortion to a  minimum. The use of coolant will also help in obtaining a better surface finish. It is generally  accepted that straight oils generate a better finish than emulsion or simple aqueous solutions,  and markedly better than the absence of any fluid. Coolant also acts as a lubricant and lowers  spindle power drain, it reduces the force needed to remove stock thereby lowering heat  generation and increasing wheel life. The final function of coolant is to remove swarf from the  abrasive rim. This prevents wheel loading and helps to m

General rules which apply to Diamond/CBN grinding wheel B

Storing and Handling Diamond Wheels or CBN wheels should be stored separately and protected against shock and contact to reduce the risk  of damage.Diamond/CBN  Wheels may be left mounted on spindles and flanges but should be wrapped  before storage. Otherwise keep wheels in their boxes when not in use

GENERAL RULES WHICH APPLY TO diamond/CBN wheel A

¨ Do not use Diamond wheel on ferrous materials. ¨ Do not use CBN wheel on steel under Rc 50. ¨ Machines must be in good working order with good bearings and rigidity.