Ferrous alloy composition and manufacture and coating methods of

Details Ferrous alloy composition and manufacture and coating methods of Ferrous alloy composition and manufacture and coating methods of

1994-11-16

1997-07-01

Yee, Deborah

Alloys or metallic compositions

Ferrous

Nine percent or more chromium containing

420583, 148326, 148403, 427405, 4273831, 427123, 75302, C22C 3832, B32B 1518

Patent

active

056435312

ABSTRACT:
Disclosed is a manufacture and coating method of mechanical products using ferrous alloy in order to improve wear, corrosion, and heat resistances of the mechanical products which are exposed to friction and wear environments with or without lubricating conditions. The mechanical products of the invention include rotation contact parts such as bush and shaft in the inside of caterpillar roller, mechanical seal under high surface pressure, and drawing dice and plug under sliding friction stress. A ferrous alloy composition used for coating in the invention comprises Cr:18.0-42.0 wt %, Mn: 1.0-3.2 wt %, B:3.0-4.5 wt %, Si: 1.0-3.0 wt %, C: less than 0.3 wt %, inevitably incorporated impurities, and Fe for the rest of content. A ferrous alloy composition used for manufacturing bush type product comprises C: less than 4.5%, Si:2.5%, Mn:less than 2%, Cr:0.5-35%, and Fe for the rest of content. The mechanical products prepared by the material of the invention exhibits increased durability and can be used at the place of the expensive conventional mechanical products.

REFERENCES:
patent: 3382065 (1968-05-01), Oberle et al.
patent: 4810464 (1989-03-01), Szerto et al.
patent: 4822415 (1989-04-01), Dorfman

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