Nitriding furnace apparatus and method

Details Nitriding furnace apparatus and method Nitriding furnace apparatus and method

1990-07-31

1992-05-19

Kastler, Scott

Metal treatment

Process of modifying or maintaining internal physical...

Carburizing or nitriding using externally supplied carbon or...

266257, 148238, C21D 148

Patent

active

051145006

ABSTRACT:
This invention makes a furnace body divide into two, a pretreating chamber and a nitriding chamber by an opening and closing center wall. After pretreating works to be treated in the pretreating chamber, the opening and closing center wall is opened and the pretreated works are transferred to the nitriding chamber to nitride them. Treatment gas can be saved largely compared with the case that the nitriding is conducted after pretreating works in a furnace which has only a nitriding chamber.

REFERENCES:
patent: 2205258 (1940-06-01), Hansen
patent: 4003764 (1977-01-01), Wunning
patent: 4016111 (1977-04-01), Asai et al.
patent: 4183773 (1980-01-01), Kawasoko et al.
patent: 4395025 (1983-07-01), Watanabe et al.
patent: 4807853 (1989-02-01), Murakami et al.
patent: 5013371 (1991-05-01), Tahara et al.

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