Carburization treatment method and carburization treatment...

Details Carburization treatment method and carburization treatment... Carburization treatment method and carburization treatment...

2007-10-02

2007-10-02

Kastler, Scott (Department: 1742)

Metallurgical apparatus

Means treating solid metal

Having evacuated chamber

C266S252000

Reexamination Certificate

active

10107449

ABSTRACT:
The invention provides a carburization treatment method in which a carburization treatment is conducted simultaneously with an operation of supplying a hydrocarbon gas and an oxidative gas into a furnace kept under a reduced pressure. Preferably, the internal pressure within the furnace is kept at 0.1 to 101 kPa, the hydrocarbon gas is one, two or more than two kinds of gases selected from the group consisting of C3H8, C3H6, C4H10, C2H2, C2H4, C2H6and CH4, while the oxidative gas is an air, an O2gas, or CO2gas.

REFERENCES:
patent: 4113426 (1978-09-01), Rogers
patent: RE29881 (1979-01-01), Westeren et al.
patent: 4622006 (1986-11-01), Hohne
patent: 5702540 (1997-12-01), Kubota
patent: 5722825 (1998-03-01), Edenhofer
patent: 06172960 (1994-06-01), None
English language translation of JP 06172960 A, Jun. 21, 1994.

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