Title:
VACUUM HEAT TREATMENT FURNACE
Document Type and Number:
Japanese Patent JP2004085126
Kind Code:
A
Abstract:
To sufficiently reduce the treatment unevenness of a treated object even when the flow velocity distribution of treatment gas in a furnace is uneven.
This vacuum heat treatment furnace for leading the treatment gas into the evacuated furnace to apply heat treatment to the treated object is provided with a frame 61 placing the treated object M and vertically movable by a lifting rod 6 in the furnace. During heat treatment, the lifting rod 6 is vertically moved by a drive shaft 72 to periodically move the frame 61 up and down in a reaction chamber CR, and simultaneously the lifting rod 6 is rotated by a motor 64.
Inventors:
MIYAJIMA TAKASHI
INUZUKA SHINOBU
HORI SATORU
INUZUKA SHINOBU
HORI SATORU
Application Number:
JP2002248750A
Publication Date:
March 18, 2004
Filing Date:
August 28, 2002
Export Citation:
Assignee:
DAIDO STEEL CO LTD
International Classes:
F27D3/12; F27B5/05; F27B5/16; (IPC1-7): F27B5/05; F27B5/16; F27D3/12
Attorney, Agent or Firm:
Kenichi Morita
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