Apparatus for quenching metallic ring-shaped workpieces

Details Apparatus for quenching metallic ring-shaped workpieces Apparatus for quenching metallic ring-shaped workpieces

1994-11-09

1995-09-26

Simmons, David A.

Metallurgical apparatus

Means treating solid metal

By contact with gas

266258, 266259, 266 80, 266 96, 266117, 266118, C21D 1613, C21D 1673

Patent

active

054528828

ABSTRACT:
For quenching heated metallic work pieces with a quenching intensity that lies in the region of H values from 0.2 to 4, which is typical for oil or water quenching, a cooling gas is used as the quenching medium in the form of discrete jet streams issuing from a nozzle field and impinging on the work piece surface to be cooled. With limiting of the blower power for the cooling gas serving a predetermined maximum limit of about 1000 kW per square meter of nozzle field the quenching intensity, with suitable selection of gas jet parameters, in particular the gas velocity w, the gas pressure p, the gas jet cross-section and the number of impinging jets per unit of surface is brought to an H value between 0.2 and 4.

REFERENCES:
patent: 1533639 (1925-04-01), Ehn
patent: 3294599 (1966-12-01), Huseby
patent: 3782705 (1974-01-01), Westeren et al.
patent: 4171126 (1979-10-01), Zahn et al.
patent: 4596610 (1986-06-01), Kuhn
patent: 4634103 (1987-01-01), Schmetz et al.
patent: 4867808 (1989-09-01), Heilmann et al.
patent: 4906182 (1990-03-01), Moller
"Der Konvektive Warmeubergang unter Desenfeldern--. . . ", Oftentechnik, H. Klammer et al, Feb. 24, 1986, pp. 155-160.
"Untersuchungen Zum Konvektiven . . . ", Udo Spiecker, Sep. 27, 1990 pp. 38-39 and Bild 23.

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