Invention Grant
- Patent Title: Powder molding apparatus and manufacture of rare earth sintered magnet using the apparatus
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Application No.: US15058395Application Date: 2016-03-02
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Publication No.: US10541082B2Publication Date: 2020-01-21
- Inventor: Osamu Kohno , Yoshihiro Umebayashi , Ryuji Nakamura , Takahiro Hashimoto
- Applicant: Shin-Etsu Chemical Co., Ltd.
- Applicant Address: JP Tokyo
- Assignee: SHIN-ETSU CHEMICAL CO., LTD.
- Current Assignee: SHIN-ETSU CHEMICAL CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: JP2015-043326 20150305
- Main IPC: H01F1/03
- IPC: H01F1/03 ; H01F41/02 ; C22C38/00 ; C22C38/06 ; C22C38/10 ; C22C38/14 ; C22C38/16 ; H01F1/053 ; H01F1/057

Abstract:
When a powder material (5) is molded by introducing the material into a cavity (11) between a lower punch (2) and a die (1), compression molding the material between upper and lower punches (3 and 2) into a compact (51) of desired shape, and moving up the lower punch (2) to eject the compact (51), a lubricant is applied to the interior surface of the die (1) by fitting a pad (24) around the lower punch (2) and impregnating the pad with the lubricant. Since the lubricant is applied on every molding operation, molding operation can be continuously carried out.
Public/Granted literature
- US10607773B2 Powder molding apparatus and manufacture of rare earth sintered magnet using the apparatus Public/Granted day:2020-03-31
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