Apparatus for producing high wear-resistant composite seal

Coating apparatus – With cutting – punching or tearing of work – Web or sheet work

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118641, C23C 1312

Patent

active

040096807

ABSTRACT:
A base metal, such as the aluminum or iron housing of a conventional rotary or reciprocating-piston internal combustion engine, and a sealing member applicable to the pistons or rotor thereof are coated with a layer of a wear-resistant alloy, such as molybdenum-ruthenium or tungsten-ruthenium alloy, either by evaporating the elements of the alloy by electron guns onto the surfaces to be coated or by vaporizing a wire of the same alloy in a vacuum chamber by the application of a high-tension electrical discharge through the wire from an electrical condenser bank. Depositing the alloy is done on a production basis by passing workpiece holders in a circular path through a vacuum chamber beneath the electron guns, followed by a realloying step through a laser beam, an acid dip, a rinsing dip, a drying by heat, and a final honing.

REFERENCES:
patent: 2746420 (1956-05-01), Steigerwald
patent: 2799600 (1957-07-01), Scott
patent: 3213826 (1965-10-01), Lins et al.
patent: 3310423 (1967-03-01), Ingham, Jr.
patent: 3375804 (1968-04-01), Rausch
patent: 3634040 (1972-01-01), Johnson et al.
patent: 3801366 (1974-04-01), Lemelson

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