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Title:
HEAT TREATMENT APPARATUS, HEAT TREATMENT METHOD FOR STEEL MATERIAL, AND HOT BENDING METHOD FOR STEEL MATERIAL
Document Type and Number:
WIPO Patent Application WO/2017/170608
Kind Code:
A1
Abstract:
This heat treatment apparatus is provided with: a feeding device for feeding a material to be heat-treated downstream in the feeding direction on a pass line for the material to be heat-treated; a heating device provided with a heating coil, the heating coil being disposed downstream from the feeding device in the feeding direction and arranged to surround the pass line; a cooling device which is disposed adjacent to and downstream from the heating coil in the feeding direction and arranged to surround the pass line; and a gas supply device which is disposed upstream from the heating coil in the feeding direction, directly connected to the heating coil and arranged to surround the pass line. The gas supply device has a plurality of gas spaces therein, the gas spaces being separated in the feeding direction.

Inventors:
UEMATSU, Kazuo (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
SAKAMOTO, Akihiro (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
KUBOTA, Hiroaki (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
Application Number:
JP2017/012759
Publication Date:
October 05, 2017
Filing Date:
March 28, 2017
Export Citation:
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Assignee:
NIPPON STEEL & SUMITOMO METAL CORPORATION (6-1 Marunouchi 2-chome, Chiyoda-ku Tokyo, 71, 〒1008071, JP)
International Classes:
C21D9/08; C21D1/18; C21D1/74; B21D7/16
Foreign References:
JP2011089150A2011-05-06
JP2001064729A2001-03-13
JPS50101207A1975-08-11
JP2012197488A2012-10-18
JP2002003933A2002-01-09
JPH1121619A1999-01-26
Other References:
See also references of EP 3438294A4
Attorney, Agent or Firm:
TAIYO, NAKAJIMA & KATO (3-17, Shinjuku 4-chome Shinjuku-k, Tokyo 22, 〒1600022, JP)
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