| 摘要 |
<p>A method of brazing corrosion resistant, nickel-based, thin-walled tubing (10) which includes substantial proportions of nickel, chromium and molybdenum to a stainless steel base member (12) using a filler metal (22), principally comprising gold as a major constituent and nickel as a minor constituent, in a vacuum furnace (20) without introducing stress corrosion cracks in the brazed tubing and also avoiding carbon precipitation. The brazing is conducted at a temperature of at least about 1900 degrees F (1038 degrees C) for a sufficient period of time to allow any carbide precipitation formed during the heating to redissolve and also to permit full, uniform flow of the filler metal. The heated members are rapidly quenched in an inert atmosphere to a temperature at least sufficiently low to avoid carbon precipitation in the tubing.</p> |
