Welding process with delayed application of full current until a

Details Welding process with delayed application of full current until a Welding process with delayed application of full current until a

1994-07-05

1995-08-08

Shaw, Clifford C.

Electric heating

Metal heating

By arc

219 61, B23K 906

Patent

active

054400961

ABSTRACT:
In an arc welding process for welding pipes used to convey high purity gas, dispersion of particles into the pipes during welding is reduced by discharging an inert back shielding gas into one end of one pipe and holding the welding current at less than the normal welding current for a specified interval after the start of arc, the welding current thereafter being increased to its normal level.

REFERENCES:
patent: 3108181 (1963-10-01), Miller
patent: 3536879 (1970-10-01), Hartsell, Jr. et al.
patent: 3689734 (1972-09-01), Burley et al.

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