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Patent Searching and Data


Title:
VERTICAL HEAT-TREATING MUFFLE FURNACE
Document Type and Number:
WIPO Patent Application WO/2019/069510
Kind Code:
A1
Abstract:
In the present invention, when a metal strip is being conveyed through the interior of a muffle, there are provided: a heating zone for heating the metal strip that is moving into the muffle from the outside of the muffle, the heating zone being provided upstream from the metal strip in the movement direction thereof; and a slow-cooling zone for slow-cooling the metal strip that is moving through the interior of the muffle, the slow-cooling zone being provided downstream from the metal strip in the movement direction thereof. When the metal strip that has been slow-cooled in the slow-cooling zone is being cooled in a cooling zone, cooling air is introduced into a slow-cooling space between the slow-cooling zone and the muffle via an introduction port, the amount of the cooling air heated in the slow-cooling space that is blown out via an exhaust port is adjusted by a flow-rate-controlling valve, and the slow-cooling temperature of the metal strip is controlled.

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Inventors:
AKASAKA Motofumi (3-6-1, Hiranomachi, Chuo-ku, Osaka-sh, Osaka 46, 〒5410046, JP)
SUGIOKA Nobuyuki (3-6-1, Hiranomachi, Chuo-ku, Osaka-sh, Osaka 46, 〒5410046, JP)
Application Number:
JP2018/023619
Publication Date:
April 11, 2019
Filing Date:
June 21, 2018
Export Citation:
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Assignee:
CHUGAI RO CO., LTD. (3-6-1, Hiranomachi Chuo-ku, Osaka-sh, Osaka 46, 〒5410046, JP)
International Classes:
C21D9/56; F27B5/16; F27B9/28
Foreign References:
JPH10130741A1998-05-19
JPH02277723A1990-11-14
JPH05295449A1993-11-09
JPS56139627A1981-10-31
JPH0320418A1991-01-29
Attorney, Agent or Firm:
MATSUKAWA Katsuaki (PATRIO Patent Office, Hommachi Takeda Building 1-29, Kyutaro-machi 3-chome, Chuo-ku, Osaka-sh, Osaka 56, 〒5410056, JP)
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