Patent ID: 8932109
Filing Date: 2015-01-13
Classification: B24B,B32B,C22C,Y10T

Abstract:
1. A lapping process for producing a modified multiple-phase working surface from a multiple-phase working surface, the process comprising the steps of: (a) providing a system including: said continuous phase having a hardness exceeding a hardness of said second phase by a Mohs Hardness of at least 0.5; (b) lapping said multiple-phase working surface by exerting a pressure on said contact surface and said multiple-phase working surface, and applying a relative motion between said working surface and said contact surface, to effect an at least partially elastic interaction between said contact surface and said abrasive particles in which at least a portion of said abrasive particles penetrate said working surface, to produce a lapped product having the modified multiple-phase working surface, in which an exterior surface of said second phase is recessed by an average of at least 1.5 micrometers with respect to an exterior surface of said continuous phase, the workpiece having the multiple-phase working surface including at a time prior to initiation of the exerting of pressure on said multiple-phase working surface and on said contact surface.