Method for finishing steel shapes with magnetite and product obt

Details Method for finishing steel shapes with magnetite and product obt Method for finishing steel shapes with magnetite and product obt

1985-11-18

1987-08-04

Metz, Andrew H.

Cleaning and liquid contact with solids

Processes

Longitudinally traveling work of bar, strip, strand, sheet...

134 2, 134 19, 134 29, 134 30, 148 16, 148 166, B08B 102, B08B 700, B08B 3000, C03C 2300

Patent

active

046844112

ABSTRACT:
A method is described for oxidatively treating the outer surface of a steel shape such as welding wire which comprises, cleaning the surface and subjecting the cleaned surface to a heated atmosphere of air or a gas mixture containing more oxygen than normally found in air. The atmosphere is heated to a range of about 300.degree. C. to about 800.degree. C., and the surface is removed from the heated atmosphere upon oxidation of the surface to a depth of about 0.5 to about 2.5 microns. The resulting welding wire may be used to provide rates of deposition significantly greater than heretofore possible with conventional wire.

REFERENCES:
patent: 1144884 (1915-06-01), White
patent: 3067069 (1962-12-01), Stack
patent: 3076730 (1963-02-01), Nolte
patent: 4064884 (1977-12-01), Asp
patent: 4201600 (1980-05-01), Luten et al.

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