Stock material or miscellaneous articles – All metal or with adjacent metals – Nonplanar – uniform-thickness material having symmetrical...
Patent
1982-07-16
1984-08-21
Childs, Sadie L.
Stock material or miscellaneous articles
All metal or with adjacent metals
Nonplanar, uniform-thickness material having symmetrical...
138143, 138146, 138DIG6, 427237, 427239, 427252, 427253, 427319, 427320, 427405, 4272557, 428 36, 428651, 428667, B21C 3700
Patent
active
044670168
ABSTRACT:
Low alloy steel tubing is decarburized, chromized and then aluminized with or without masking at the sites at which the tubing is to be welded in place, to greatly increase resistance of the tubing to high temperature oxidation and sulfidation. Low surface aluminum content after aluminizing makes it easier to weld at that surface.
REFERENCES:
patent: 3694255 (1972-09-01), Brill-Edwards
patent: 3764371 (1973-10-01), Baldi
patent: 3801357 (1974-04-01), Baldi
patent: 3936539 (1976-02-01), Baldi
patent: 4181758 (1980-01-01), Elam
patent: 4208453 (1980-06-01), Baldi
patent: 4350719 (1982-09-01), Baldi
Alloy Surfaces Company, Inc.
Childs Sadie L.
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