Hydroforming of compound tubes

Details Hydroforming of compound tubes Hydroforming of compound tubes

1993-04-16

1994-08-02

Bradley, P. Austin

Metal fusion bonding

Process

With shaping

228155, 72 61, B23K 3102

Patent

active

053337751

ABSTRACT:
This invention teaches a method for producing a tubular structural member which can longitudinally vary in wall thickness, perimeter and material using the hydroforming process. This is accomplished by first fabricating a tube blank of the desired longitudinal combination of wall thickness, perimeter and material by welding together portions of tubing having the desired characteristics and then hydroforming the resultant blank. The hydroformed part will have nearly the same thickness, perimeter and material characteristics as the blank in the corresponding longitudinal location.

REFERENCES:
patent: 3725997 (1973-04-01), Kiwalle et al.
patent: 3729124 (1973-04-01), Kedzior et al.
patent: 4559832 (1985-12-01), Burlage et al.
patent: 4759111 (1988-07-01), Cudini
patent: 4827100 (1989-05-01), Frings et al.
patent: 5070717 (1991-12-01), Boyd et al.

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