Manufacturing method of delayed hydride cracking resistant seaml

Details Manufacturing method of delayed hydride cracking resistant seaml Manufacturing method of delayed hydride cracking resistant seaml

1994-05-25

1997-10-28

Nold, Charles

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

148421, C22C 1600

Patent

active

056814062

ABSTRACT:
A method for manufacturing a delayed hydride cracking resistant zirconium ahoy (Zircaloy-2, Zircaloy-4, Zr-2.5% Nb, pure Zr, etc.) pressure tube includes the steps of making a seamless pressure tube having a diameter smaller than the final size by extrusion or drawing, and then expanding the tube at a temperature below 600.degree. C. by cross rolling.

REFERENCES:
patent: 4065328 (1977-12-01), Cheadle
patent: 4094706 (1978-06-01), Schulson et al.
patent: 4226647 (1980-10-01), Schulson et al.
patent: 4452648 (1984-06-01), Cheadle et al.
patent: 5223055 (1993-06-01), Charquet et al.

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