Metal fusion bonding – Process – With clamping or holding
Patent
1995-02-21
1996-06-11
Bradley, P. Austin
Metal fusion bonding
Process
With clamping or holding
228 443, 228 61, 219 60R, 219 61, B23K 3704
Patent
active
055248136
ABSTRACT:
A welding apparatus and method is provided for automatically welding a stack of two or more metal tubes together. The tubes are stacked such that there is a pair of opposed longitudinal interfaces (or seams) between each tube in the stack. The welding apparatus broadly comprises: a stationary welding means for forming welds along the seams between each tube; a drive means for linearly advancing the stack of tubes relative to the welding means and for preventing separation of the tubes as the welds are being formed; and an alignment means for continuously and accurately keeping the stack of tubes in proper alignment as the drive means advances the tubes. The welding method broadly comprises: aligning the tubes in accurate stacked relation; holding the tubes together in stacked relation; advancing the tubes relative to a stationary welding means while maintaining the tubes in stacked relation; and welding the opposed longitudinal interfaces between each tube as the tubes are moved relative to the welding means.
REFERENCES:
patent: 3527918 (1970-09-01), Fielder et al.
patent: 3639974 (1972-02-01), Finnegan
patent: 4205774 (1980-06-01), Madden et al.
Bradley P. Austin
Holiday Rambler L.L.C.
Knapp Jeffrey T.
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