Holder means for the partial thermal treatment of workpieces

Details Holder means for the partial thermal treatment of workpieces Holder means for the partial thermal treatment of workpieces

1993-12-03

1995-05-23

Yuen, Henry C.

Heating

Work chamber having heating means

Work chamber having gaseous material supply or removal...

432247, F27B 504

Patent

active

054175674

ABSTRACT:
A holder means for the partial thermal treatment in an oven, especially a cuum chamber oven that provides compressed gas quenching, of tools or workpieces, especially drill bits, that have a working portion and a portion that is to be clamped. The workpieces, which are guided by a base plate that is provided with holes, rest upright upon a bottom plate. The base plate is provided with a radiation shield on that side that faces the oven chamber. The upper surface of the radiation shield has a high emission factor for thermal radiation, and the radiation shield is disposed directly on the base plate.

REFERENCES:
patent: 3558113 (1971-01-01), Strohmeier et al.
patent: 3993433 (1976-11-01), Isaksson et al.
patent: 4325694 (1982-04-01), Bergman
patent: 4512737 (1985-04-01), Pierce
patent: 5052923 (1991-10-01), Peter et al.
patent: 5193998 (1993-03-01), Hack et al.

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