Abstract: The seamless, ring-shaped brazing material comprises a brazing metal and a flux uniformly dispersed in the brazing metal for brazing nonferrous metal members and has a relative density of 0.90 or more. The seamless, ring-shaped brazing material is produced by (a) mixing brazing metal powder and flux powder uniformly; (b) pressing the resultant mixture to a powder compact billet; (c) forming the billet into a pipe by hot extrusion; and (d) slicing the pipe into rings.
Type:
Grant
Filed:
April 16, 1999
Date of Patent:
December 26, 2000
Assignees:
Sun Kwang Brazing Filler Metal Co., Ltd., Myoung Jin Kim, Ki Hong Kim