Method for making a composite to carbon steel joint

Details Method for making a composite to carbon steel joint Method for making a composite to carbon steel joint

1992-08-20

1993-08-31

Ramsey, Kenneth J.

Metal fusion bonding

Process

With shaping

228170, 22826241, 285286, B23K 3102, B23K10110

Patent

active

052401685

ABSTRACT:
An improved method for making a composite tube (10) to a carbon steel tube (16) joint or a composite tube (10) to a carbon steel header (50) joint is achieved by specially preparing the composite tube (10) by removing the cladding (12) from one end (24) to a predetermined length to provide base carbon steel material (14). The end (24) of the composite tube has cladding (12) tapered at a predetermined angle. This end (24) is then expanded. The composite tube (10) is then welded to the carbon steel tube (16) with fewer weld passes while also eliminating the stainless steel weld pass.

REFERENCES:
patent: 2209290 (1940-07-01), Watts
patent: 2257335 (1941-09-01), Evans et al.
patent: 4949895 (1990-08-01), Sugiyama et al.

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