Galvanized tube welded seam repair metallizing process

Details Galvanized tube welded seam repair metallizing process Galvanized tube welded seam repair metallizing process

1978-03-30

1980-03-04

Husar, Francis S.

Metal fusion bonding

Process

With shaping

295274, 228 18, B23K 3106

Patent

active

041913191

ABSTRACT:
This disclosure relates to a method and apparatus for manufacturing zinc coated steel tubing from zinc coated steel strip. The zinc lost by volatilization during welding of the seam is replaced in a two-stage metallizing process. In the first stage an aluminum alloy is spray atomized onto the tubing. The alloy contains from 0.45 to 0.95 weight percent iron, no more than 0.10 weight percent silicon, and the remainder aluminum with associated trace elements. Thereafter, in the second stage, zinc is spray atomized over the aluminum alloy-coated substrate.

REFERENCES:
patent: 3320040 (1967-05-01), Roe et al.
patent: 3370151 (1968-02-01), Normando
patent: 3512221 (1970-05-01), Schoerner
patent: 3827139 (1974-08-01), Norteman
patent: 4082212 (1978-04-01), Headrick et al.
Alloy Digests: Al-44 (Feb. 1974) and Al-104 (Jun. 1961); Engineering Alloys Digest, Inc., New Jersey.

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