Flatness to one light band (0.0003 mm) on 100 dia.
Surface finish to less than 0.2 µRA.
The advantages of lapping for obtaining fine flatness and surface finish have long been recognised by production and design engineers. Proper finish and flatness can be achieved with any of the 7 standard lapping machines in the GMT range, in bench and floor models.
Some reasons why lapping machines help to transform a costly, rarely used, hand operation to a fine accuracy economical process:-
Parts of different shapes, thickness and materials can be lapped.
Because the lap plate continuously maintains its flatness, production is not interrupted.
Appropriate diameters of the conditioning rings result in optimum lapping area.
Lapping cycles are controlled by an automatic and adjustable digital display times.
A partial list of the materials that lend themselves to lapping :
Cast iron
Tungsten
Plastics
Ceramics
Stainless Steel
Alumina
Silicon
Bronze
Stellite
Carbon
Ferrite
Aluminium
Pump manufacturers, electronic industries, valve manufacturers,
etc., have found a sure way of obtaining positive sealing.
