Near net shape processing of zirconium or hafnium metals and all

Details Near net shape processing of zirconium or hafnium metals and all Near net shape processing of zirconium or hafnium metals and all

1991-05-20

1992-10-20

Roy, Upendra

Metal treatment

Process of modifying or maintaining internal physical...

With casting or solidifying from melt

148565, 164494, 164495, C22F 100, C22C 1600

Patent

active

051566893

ABSTRACT:
Zirconium or hafnium tubeshells, billets and channel sheets are produced by plasma arc melting the metal to form a liquid metal pool. The pool is poured into a mold to form a near net shape. The near net shape is reduced to final size while maintaining the metal temperature below the alpha-beta transition temperature throughout the size reducing step.

REFERENCES:
patent: 4627148 (1986-12-01), Imahashi et al.
patent: 4794979 (1989-01-01), Gassner et al.
patent: 4881992 (1989-11-01), Bunel et al.
patent: 4908071 (1990-03-01), Anderson et al.
patent: 4938921 (1990-07-01), Mardon et al.

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