High temperature brazing fixture

Details High temperature brazing fixture High temperature brazing fixture

1999-12-01

2000-10-10

Ryan, Patrick

Metal fusion bonding

Including means to force or clamp work portions together...

228 491, 228144, 432253, 2988921, B23K 114, B23K 3704, B21D 3902, B21K 2500, B23P 1502

Patent

active

061292575

ABSTRACT:
The present invention provides a brazing fixture and method of using the fixture which allows the brazing of a joint in an oxide-dispersion-strengthened (ODS) high temperature alloy workpiece where stresses in the workpiece operate to open the joint during the brazing process. The fixture is formed from the same ODS alloy as the workpiece, such that the fixture exhibits the same coefficient of thermal expansion as the workpiece. This allows maximization of surface area contact between the fixture and the workpiece during the brazing operation in order to force the workpiece to maintain its design dimensions and to prevent the joint from opening. The fixture includes a cavity preventing fixture/workpiece contact in the area of the braze to help control thermal lag in the area of the joint.

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