Title: Automatic fixed position pipe welding

Abstract: Automatic fixed position pipe welding is carried out by gas-shielded electric arc welding with a novel flux-cored electrode wire having a low-carbon sheel sheath containing a core filling of, by weight, 16-17 percent ferro manganese, 10-11 percent ferro silicon, 1-4 percent manganous oxide, 1/2-1 percent potassium aluminum fluoride, and the balance rutile. The wire exterior is shiny and metallic-appearing, and the wire is configured to have folded-in edges.

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Inventors: Ballass, John T. (Norwich, CT, US)
Georgetti, Richard A. (Mystic, CT, US)

Application Number: 514196
Filing Date: 1974-10-11
Publication_date: 1976-01-27
Assignee: Unicore, Inc. (North Haven, CT)
Primary Class(es): 219/61 148/24, 219/74, 219/146.3, 219/146.32, 219/146.52
Other Classes:
US Patent Ref:

3023301	Feb, 1962	Claussen	219/74.
3030496	Apr, 1962	Cotter et al.	219/145.
3177340	Apr, 1965	Danhier	219/146.
3405250	Oct, 1968	Lee	219/146.
3424892	Jan, 1969	Wilcox	219/146.
3580748	May, 1971	Delong	148/26.
3700494	Oct, 1972	Avallone	219/146.
3848109	Nov, 1974	Zvanut	219/146.

Other Refs:
Primary Examiner: Truhe, J. V.
Assistant Examiner: Herkamp, N. D.
Attorney: