Process for the production of oxygen-free copper casting and mol

Details Process for the production of oxygen-free copper casting and mol Process for the production of oxygen-free copper casting and mol

1976-11-04

1978-10-03

Andrews, M. J.

Metal treatment

Process of modifying or maintaining internal physical...

Chemical-heat removing or burning of metal

75 76, 75135, 75153, 148 132, C22F 108

Patent

active

041182561

ABSTRACT:
A process for the production of oxygen free copper castings and moldings, which contain 0.05 to 0.2% by weight of boron as micro-alloy element, by deoxidation of oxygen containing copper melts by means of calcium hexaboride, comprising introducing 0.3-1% by weight of a CaB.sub.6 into the copper melt, the CaB.sub.6 containing at least 3% C calculated on the weight of the CaB.sub.6, subsequently subjecting the cooled melt, if desired while molding the same, to a solution annealing operation and following up with a storage for an extended time.

REFERENCES:
patent: 2281691 (1942-05-01), Hensel et al.
patent: 2380566 (1945-07-01), Wyllie
patent: 2479311 (1949-08-01), Christensen
patent: 3595705 (1971-07-01), Bray
Neu, M. et al., Fluxing and Deoxidation . . . for Copper; in Trans. Amer. Found. Soc., Aug. 1956, pp. 616-624.
Newton, J. et al., Metallurgy of Copper, New York, 1942, p. 222.

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