Method and device for reducing overpenetration at the start of p

Details Method and device for reducing overpenetration at the start of p Method and device for reducing overpenetration at the start of p

1998-06-26

2000-03-14

Paschall, Mark

Electric heating

Metal heating

By arc

21912136, 21912146, 428 80, B23K 1000

Patent

active

060375612

ABSTRACT:
A shim for improving plasma arc weld quality has ends tapered at about 25.degree. and notches at each end roughly centered over the corner between the tapered ends and main body of the shim. The improved shim allows lower starting plasma arc heat input and reduces the occurrence of sagging, or overpenetration, of the weld.

REFERENCES:
patent: 4458858 (1984-07-01), Nelson
patent: 4712935 (1987-12-01), LaDue et al.
patent: 5225654 (1993-07-01), Harwig et al.
patent: 5624724 (1997-04-01), Relly
patent: 5719369 (1998-02-01), White et al.

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