Title:
PROCESS FOR PRODUCING INGOT OF COPPER-IRON BASE ALLOY
Document Type and Number:
WIPO Patent Application WO/2011/142005
Kind Code:
A1
Abstract:
A novel process for producing an ingot of a copper-iron base alloy is provided by which a copper-iron base alloy ingot reduced in iron segregation, i.e., iron concentration unevenness within the ingot, is obtained even when the alloy is solidified into a relatively large casting mass. The process comprises subjecting a raw material comprising 3-50 mass% iron, 97-50 mass%, excluding both 97 mass% and 50 mass%, copper, and incidental impurities as the remainder to mixing, melting, and solidification to obtain an ingot of the copper-iron base alloy. The process comprises melting the raw material in a 2,000-Hz or higher high-frequency melting furnace, introducing the melt into a tundish having a planar sectional area at least two times that of the melting furnace, holding the melt therein for 1-3 minutes, subsequently pouring the melt through the discharge port into a ladle equipped with an electromagnetic stirrer, pouring the melt into a water-cooled casting die after or while stirring the melt, and rapidly solidifying the melt at a cooling rate of 100-150ºC/min.
Inventors:
ENDO, Hiroshi (4-19-1, Oyumino Midori-ku, Chiba-sh, Chiba 31, 〒2660031, JP)
遠藤 博之 (〒31 千葉県千葉市緑区おゆみ野４丁目１９番１号 Chiba, 〒2660031, JP)
遠藤 博之 (〒31 千葉県千葉市緑区おゆみ野４丁目１９番１号 Chiba, 〒2660031, JP)
Application Number:
JP2010/058020
Publication Date:
November 17, 2011
Filing Date:
May 12, 2010
Export Citation:
Assignee:
ENDO, Hiroshi (4-19-1, Oyumino Midori-ku, Chiba-sh, Chiba 31, 〒2660031, JP)
遠藤 博之 (〒31 千葉県千葉市緑区おゆみ野４丁目１９番１号 Chiba, 〒2660031, JP)
AIM Asset Management Co., Ltd. (Kojimachi crystal city Bldg. 4F, 4-8 Kojimachi, Chiyoda-k, Tokyo 83, 〒1020083, JP)
遠藤 博之 (〒31 千葉県千葉市緑区おゆみ野４丁目１９番１号 Chiba, 〒2660031, JP)
AIM Asset Management Co., Ltd. (Kojimachi crystal city Bldg. 4F, 4-8 Kojimachi, Chiyoda-k, Tokyo 83, 〒1020083, JP)
International Classes:
B22D21/00; B22D27/02; B22D27/04; C22C9/00
Attorney, Agent or Firm:
KOSUGI, Yoshio et al. (Pelican Building 4th Floor, 3-3 Nishi-shimbashi 3-chome, Minato-k, Tokyo 03, 〒1050003, JP)
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Claims:
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