Title:
PRODUCTION OF R-FE-B PERMANENT MAGNET CAST SLAB
Document Type and Number:
Japanese Patent JP3535253
Kind Code:
B2
Abstract:
PURPOSE: To provide the production method of R-Fe-B permanent magnet cast slab having excellent and stable magnet property of coercive force, etc., by which problem of molten metal/single roll in horizontally pouring method is solved and deterioration of corrosion resistance of R-Fe-B permanent magnet is prevented or grain structure is stably micronized.
CONSTITUTION: By eliminating a cushion material between a nozzle 4 and roll 5 and specifying/optimizing the clearance length between the nozzle 4 and roll 5 and the position relationship between the nozzle 4 and roll 5, the deterioration of corrosion resistance of R-Fe-B permanent magnet is prevented and the grain structure is stably refined, the R-Fe-B permanent magnet having excellent and stable magnet property is obtained.
Inventors:
Tokuhara, Hiroki
Ishigaki, Naoyuki
Yamada, Michio
Ueda, Masami
Kojima, Takashi
Watanabe, Yukiyoshi
Ishigaki, Naoyuki
Yamada, Michio
Ueda, Masami
Kojima, Takashi
Watanabe, Yukiyoshi
Application Number:
JP6208795A
Publication Date:
June 07, 2004
Filing Date:
February 23, 1995
Export Citation:
Assignee:
SUMITOMO SPECIAL METALS CO LTD
International Classes:
C22C33/04; B22D11/06; C22C38/00; H01F1/053; H01F1/057; (IPC1-7): B22D11/06; C22C33/04; C22C38/00; H01F1/053
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