Research/Patents/US 5312650
US 5312650

METHOD OF FORMING A COMPOSITE ARTICLE BY METAL SPRAYING

Assignee

HOWMET CORPORATION

Filed

Jan 12, 1988

Granted

May 17, 1994

Location

MUSKEGON MI US

Abstract

The method of making a composite article of different metal portions by spraying molten metal on the surface of a solid metal member that has been cleaned and preheated in a controlled atmosphere at low pressure. The molten metal is sprayed on the surface of the solid metal member, preferably by plasma jet spraying. It is rapidly solidified to be adherent to the surface of the solid metal member to form a composite preform. The composite preform is cooled at a rate sufficiently low to reduce residual stresses and then hot pressed to eliminate voids in the sprayed metal portion and metallurgically bonded to the surface of the solid member.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Aug 24, 1988

Rescinded

Mar 10, 1993

Duration

4 years, 6 months

Inventor

  • 1RANES P. DALAL

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records