Quench-hardening of pipes

Details Quench-hardening of pipes Quench-hardening of pipes

1974-09-26

1976-05-25

Lake, Roy

Metallurgical apparatus

Having means for contacting a solid metalliferous material...

With heating means, e.g., flame contact

266134, C21D 162

Patent

active

039587967

ABSTRACT:
Large diameter pipes are moved past a preheater, an induction heater, prequench nozzles, a sizing mill and post quench nozzles. An inside quenching head is mounted on a support tube, held against the inside wall of a pipe by rollers right at the sizing stand. The sizing rollers maintain or restore circularity of the pipe concurrently with quenching.

REFERENCES:
patent: 3546911 (1970-12-01), Lenz
patent: 3804390 (1974-04-01), Jennings

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