Title:
HEAT TREATMENT FURNACE FOR METAL CHUNK, METHOD FOR REPAIRING HEAT TREATMENT FURNACE FOR METAL CHUNK, AND METHOD FOR PRODUCING INFILL FOR HEARTH USED FOR HEAT TREATMENT FURNACE FOR METAL CHUNK
Document Type and Number:
WIPO Patent Application WO/2011/145147
Kind Code:
A1
Abstract:
Provided is a heat treatment furnace for a metal chunk, provided with a hearth structure having a filling layer of granular refractory on the furnace operation surface side, wherein the filling rate of the granular refractory is 65-100 volume %, and the thickness of the filling layer is more than twice the maximum gain size of the granular refractory.
Inventors:
ITAKUSU, Motokuni (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
板楠元邦 (〒71 東京都千代田区丸の内二丁目６番１号 新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
板楠元邦 (〒71 東京都千代田区丸の内二丁目６番１号 新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
Application Number:
JP2010/003399
Publication Date:
November 24, 2011
Filing Date:
May 20, 2010
Export Citation:
Assignee:
NIPPON STEEL CORPORATION (6-1 Marunouchi 2-chome, Chiyoda-ku Tokyo, 71, 〒1008071, JP)
新日本製鐵株式会社 (〒71 東京都千代田区丸の内二丁目６番１号 Tokyo, 〒1008071, JP)
ITAKUSU, Motokuni (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
新日本製鐵株式会社 (〒71 東京都千代田区丸の内二丁目６番１号 Tokyo, 〒1008071, JP)
ITAKUSU, Motokuni (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
International Classes:
F27D1/16; F27D1/00
Attorney, Agent or Firm:
SHIGA, Masatake et al. (1-9-2, Marunouchi Chiyoda-k, Tokyo 20, 〒1006620, JP)
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Claims: