发明授权
EP1386681B1 METHOD FOR PRODUCING GRANULATED POWDER OF R-FE-B TYPE ALLOY AND METHOD FOR PRODUCING R-FE-B TYPE ALLOY SINTERED COMPACT
有权
用于生产粉粒状型R-Fe-B合金和方法用于制造烧结体从R-Fe-B合金
- 专利标题： METHOD FOR PRODUCING GRANULATED POWDER OF R-FE-B TYPE ALLOY AND METHOD FOR PRODUCING R-FE-B TYPE ALLOY SINTERED COMPACT
- 专利标题（中）： 用于生产粉粒状型R-Fe-B合金和方法用于制造烧结体从R-Fe-B合金
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申请号： EP02708697.4申请日： 2002-03-27
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公开(公告)号： EP1386681B1公开(公告)日： 2007-01-17
- 发明人: KUNIYOSHI, Futoshi c/o SUMITO.SPEC.METALS CO.LTD. , KANEKO, Yuji c/o SUMITOMO SPECIAL METALS CO. LTD. , TSUJIMOTO, Akihito c/o SUMITO.SPEC.METALS CO.LTD. , SHIMAUCHI, Kazunari c/o SUMITO.SPEC.METAL.CO.LTD. , TANAKA, Kazuo c/o PALACE CHEMICAL CO., LTD. , MORI, Shizuo c/o PALACE CHEMICAL CO., LTD. , SUZUKI, Kiyofumi c/o PALACE CHEMICAL CO., LTD.
- 申请人： Neomax Co., Ltd.
- 申请人地址： 7-19 Kitahama 4-chome, Chuo-ku Osaka-shi, Osaka 541-0041 JP
- 专利权人： Neomax Co., Ltd.
- 当前专利权人： Neomax Co., Ltd.
- 当前专利权人地址： 7-19 Kitahama 4-chome, Chuo-ku Osaka-shi, Osaka 541-0041 JP
- 代理机构： Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät
- 优先权： JP2001096572 20010329
- 国际公布： WO2002078882 20021010
- 主分类号： B22F3/02
- IPC分类号： B22F3/02 ; H01F41/02 ; H01F1/08 ; B22F1/00 ; C22C1/04 ; H01F1/057
摘要：
A method for producing a granulated powder of a R-Fe-B type alloy which comprises a step of preparing a powder of the R-Fe-B type alloy and a step of granulating the above powder by the use of at least one granulating agent selected from among a normal paraffin, iso-paraffin and an oligomer obtained by depolymerization, to thereby prepare the granulated powder. The granulated powder of a R-Fe-B type alloy produced by the method is excellent in fluidity and press formability, and also excellent in easiness in the removal of a binder.
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