Multiproperty metal forming process

Details Multiproperty metal forming process Multiproperty metal forming process

1997-07-25

1999-03-09

Lin, Kuang Y.

Metal founding

Process

Shaping liquid metal against a forming surface

164113, 164103, 164900, B22D 1700, B22D 1916

Patent

active

058788042

ABSTRACT:
Methods for semisolid manufacturing of precision parts, turbine rotors for example, comprised of a plurality of high melting point alloys are given. Generally, a semisolid/thixotropic process is operated under vacuum utilizing a heated mold. The process preferably comprises a vacuum chamber, inductive heaters to bring two or more high melting point slugs to a either a solid or thixotropic phase, and a plunger that accelerates and injects a high melting point slug into the heated mold containing one or more solid or thixotropic slugs. The semisolid solution is eliminated as the completed forged assembly cools. Thixotropic forging of a multi-alloy assembly tailors its mechanical properties to achieve optimized properties in specific locations of the final product.

REFERENCES:
patent: 5332022 (1994-07-01), Colvin
patent: 5638889 (1997-06-01), Sugiura et al.

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