Process for rapid quenching in a collapsed bed

Details Process for rapid quenching in a collapsed bed Process for rapid quenching in a collapsed bed

1987-11-10

1992-01-14

Andrews, Melvyn J.

Metal treatment

Compositions

Heat treating

148 16, 148 203, 148143, 432 15, C21D 156

Patent

active

050807293

ABSTRACT:
A method of rapidly quenching articles in a fluidized bed or in a collapsed bed, wherein the bed comprises fine solid particles. A high conductivity gas may be used to transfer heat to or from the fluidized bed or the collapsed bed during at least a portion of the quenching. The high conductivity gas may be used to fluidize the bed during at least a portion of the quenching. The rate of heat transfer from or to the article quenched is improved by moving the article being quenched relative to the quenching bed or by moving the quenching bed about the article.

REFERENCES:
patent: 3197328 (1965-07-01), Jung et al.
patent: 4300936 (1981-11-01), Quittevere
patent: 4372774 (1983-02-01), Cross
patent: 4612065 (1986-09-01), Kuhn
patent: 4717433 (1988-01-01), Weisert
R. Gupta and A. S. Mujumdar, The Canadian Journal of Chemical Engineering, vol. 58, pp. 332-338, Jun. 1980, A. I. Tamarin, I. I. Kal'tman.
L. A. Vasil'ev, "Vibrofluidized Bed for Quenching", Metallovendenie & Termicheskaya Obrabotka Metallov, No. 3 pp. 10-11, 3/68.
Metals Handbook, 9th ed., vol. 4, Heat Treating, pp. 299-306, 1981.

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