Vacuum carburizing method and device, and carburized products

Details Vacuum carburizing method and device, and carburized products Vacuum carburizing method and device, and carburized products

1996-03-28

1997-12-30

Yee, Deborah

Metal treatment

Process of modifying or maintaining internal physical...

Carburizing or nitriding using externally supplied carbon or...

148235, 148218, 148319, C21D 106, C23C 822

Patent

active

057025401

ABSTRACT:
In order to keep down soot production and to enable every part of the workpiece, including deep concavities to be uniformly carburized by vacuum carburizing, and to enable decreases in the quantities of gas and heat employed, carburizing treatment is performed in the heating chamber 2 of a vacuum carburizing furnace 1 with workpieces M being heated while acetylene gas is supplied from a carburizing gas source C inside the heating chamber 2, and the inside of the heating chamber 2 being evacuated by a vacuum evacuation source V to give a vacuum of .ltoreq.1 kPa.

REFERENCES:
patent: 4035203 (1977-07-01), L'Hermite et al.
patent: 4108693 (1978-08-01), L'Hermite et al.
patent: 5139584 (1992-08-01), Gantois
patent: 5205873 (1993-04-01), Faure et al.
patent: 5366205 (1994-11-01), Gantois

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