Process for the heat treatment of thick walled steel pipes

Details Process for the heat treatment of thick walled steel pipes Process for the heat treatment of thick walled steel pipes

1977-04-26

1979-08-21

Stallard, W.

Metal treatment

Process of modifying or maintaining internal physical...

Chemical-heat removing or burning of metal

148152, 148153, C21D 908, C21D 914

Patent

active

041652460

ABSTRACT:
A process in which pipes, particularly thick walled pipes, are inductively heated to the austenization temperature, quenched with a coolant to form martensite in the surface zone, then drawn, with additional heat added when necessary and left to cool with the not-quenched layers forming an interstage structure.

REFERENCES:
patent: 2240019 (1941-04-01), Quarnstrom et al.
patent: 2604419 (1952-07-01), Herbenar
patent: 3140964 (1964-07-01), Middlemiss
patent: 3144365 (1964-08-01), Ditson
patent: 3189490 (1965-06-01), Scott
patent: 3407099 (1968-10-01), Schell
patent: 3755010 (1973-08-01), Moliterno

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