Welding process and mixture of reactants for use in such process

Details Welding process and mixture of reactants for use in such process Welding process and mixture of reactants for use in such process

1990-11-30

1991-11-05

Rosenberg, Peter D.

Metal treatment

Compositions

Fluxing

75959, B23K 3534

Patent

active

050629034

ABSTRACT:
The invention provides a method and means of producing weld metal for use in joining two or more metallic pieces. The method includes the steps of providing a novel mixture of reactants comprising a reducing agent, a metallic compound which is exothermically reduced by the reducing agent, and a filler metal that does not react with the metallic compound. The mixture of reactants is then exothermically reacted so as to form the weld metal for joining the metallic pieces. At least about 90 percent by weight of the weld metal is produced by the filler metal and at least about 90 percent by weight of the weld metal has a chemical composition substantially similar to that of at least one of the metallic pieces being joined.

REFERENCES:
patent: 1872254 (1932-08-01), Golyer
patent: 2569956 (1951-10-01), Schiltknecht
patent: 2831760 (1958-04-01), Rejdak
patent: 2870498 (1959-01-01), Rejdak
patent: 3020610 (1962-02-01), Rejdak
patent: 3415697 (1968-12-01), Bredzs et al.
patent: 3899306 (1975-08-01), Knopp et al.
patent: 4349396 (1982-09-01), Mueller et al.
patent: 4881681 (1989-11-01), Pond, Sr.

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