B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
327/114, 327/34
B23K 35/368 (2006.01) B23K 9/24 (2006.01) B23K 35/02 (2006.01) B23K 35/22 (2006.01)
Patent
CA 1262376
ABSTRACT A cored tubular metallic arc electrode is provided for use in the Gas-assisted cutting and gouging of metal substrates, the electrode comprises a wrought metal tube and a compacted core composition consisting essentially of particulate reactant metal mixed with an exothermically reactable metal oxide and containing 0 to about 30% by weight of an additive based on the total weight of the core composition, the additive being selected from the group consisting of arc stabilizers, fluxing agents, deoxidizers and gas formers. The particulate reactant metal is characterized by a free energy of formation of its oxide referred to 25°C of at least about 100,000 calories per gram atom of oxygen, the exothermically reactable metal oxide mixed therewith being characterized by a free energy of formation thereof of not exceeding about 90,000 calories per gram atom of oxygen referred to 25°C.
518053
Eutectic Corporation
Gamberg Edward R.
Smart & Biggar
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