Apparatus for the inner and outer quenching of tubular pieces

Metallurgical apparatus – Having means for contacting a solid metalliferous material... – With means to prevent warping of treated object

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266159, C21D 908

Patent

active

048487538

ABSTRACT:
An apparatus for providing the outer quenching and the inner quenching of tubular pieces, notably of steel tubes, characterized in that it includes successively, in the advancement direction of the tubes:

REFERENCES:
patent: 4417928 (1983-11-01), Heine, Jr. et al.
patent: 4458885 (1984-07-01), Akita et al.
patent: 4461462 (1984-07-01), Mizushima et al.

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