Patent ID: 7776793
Filing Date: 2010-08-17
Classification: B24B

Abstract:
1. A polishing system for continuously polishing a target surface of a tape-shaped metallic base material, said base material, an intermediate layer with controlled crystalline orientation on said target surface of said base material and a superconducting oxide layer on said intermediate layer together being adapted to form a superconducting oxide member, said polishing system comprising: a feeding device for causing said base material to travel continuously; a pressing device for applying a specified tension in said base material; a first polishing device for carrying out an initial polishing of said target surface by performing a random rotational polishing and thereby removing scratches, protrusions or crystalline defects on said target surface generated on said base material by a rolling process; and a second polishing device for carrying out a final polishing on said target surface in the direction of travel of said base material and thereby increasing crystalline directionality in a longitudinal direction of said base material and flattening said target surface wherein polishing marks are formed in said direction of travel on said target surface by said final polishing.