Coated welding electrode of basic type suitable for vertical dow

Details Coated welding electrode of basic type suitable for vertical dow Coated welding electrode of basic type suitable for vertical dow

1980-10-09

1982-09-14

Kucia, Richard R.

Electric heating

Metal heating

Weld rod structure

148 26, 21914623, 21914624, 428386, B23K 3536

Patent

active

043497217

ABSTRACT:
There is provided an improved basic coated welding rod for downhand welding of fixed pipes. The coating contains by weight on a dry basis 22 to 28% of calcium carbonate, 1.5 to 3% of calcium fluoride, 7 to 14% of titanium dioxide, 35 to 55% of iron, and 5 to 25% of at least one element selected from the group consisting of chromium, manganese, silicon, nickel and molybdenum. The ratio of the coated welding rod diameter to the core wire diameter is between 1.45:1 and 1.70:1. Preferably the ratio of calcium carbonate to calcium fluoride in the coating is between 10:1 and 20:1. Advantageously, at least 35% of the iron in the coating is iron powder.

REFERENCES:
patent: 2805971 (1957-09-01), Bryan
patent: 3084074 (1963-04-01), Wasserman
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patent: 3645782 (1972-02-01), Johnson
patent: 3849189 (1974-11-01), Yaronvinsky
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patent: 4017339 (1977-04-01), Okuda
patent: 4103067 (1978-07-01), Jackson
patent: 4251711 (1981-02-01), Tanigaki

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