公开(公告)号：US07641848B2

公开(公告)日：2010-01-05

申请号：US12259455

申请日：2008-10-28

申请人： Kazunori Oi ,  Seiichi Endo ,  Kazuyuki Satou ,  Masayuki Ohtsuka ,  Norihisa Saito ,  Tsuneki Watanabe

发明人： Kazunori Oi ,  Seiichi Endo ,  Kazuyuki Satou ,  Masayuki Ohtsuka ,  Norihisa Saito ,  Tsuneki Watanabe

IPC分类号： B29C45/00

CPC分类号： H01F41/0266 ,  B22F3/03 ,  B22F2999/00 ,  B28B3/027 ,  B28B13/0275 ,  B30B15/302 ,  C04B35/2633 ,  C04B35/2641 ,  C04B35/6263 ,  C04B2235/3213 ,  C04B2235/3227 ,  C04B2235/3277 ,  C04B2235/3418 ,  C04B2235/6022 ,  C04B2235/605 ,  C04B2235/767 ,  C04B2235/95 ,  H01F1/11 ,  Y10S425/033 ,  B22F1/0059

摘要： A process for production of a magnet which comprises step of supplying a slurry S containing magnetic powder and a dispersing medium into the cavity C of a molding apparatus 12, a step of compression molding the slurry S while applying a magnetic field to the slurry S to obtain a molded article and a step of sintering the molded article to obtain a magnet, wherein the molding apparatus 12 comprises a die 121 having a through-hole 121a into which the slurry S is supplied, a slurry supply gate 121d being formed in the inner wall surface 121b, a die 122 inserted in the through-hole 121a and a die 123 that forms a cavity C together with the dies 123, 122, the slurry S being supplied in an amount such that it is less than the volume of the cavity C when the die 122 has been inserted in the through-hole 121a and has blocked the slurry supply gate 121d, and in the step of obtaining the molded article, the slurry S is compression molded after the die 122 has blocked the slurry supply gate 121d.

摘要翻译： 一种制造磁体的方法，包括以下步骤：将含有磁性粉末和分散介质的浆料S供给到模制设备12的空腔C中，同时向浆料S施加磁场压缩成型浆料S的步骤 获得模制品和烧结模制品以获得磁体的步骤，其中模制装置12包括具有通过供给浆料S的通孔121a的模具121，在内部形成有浆料供给口121d 壁表面121b，插入通孔121a中的模具122和与模具123,122一起形成空腔C的模具123，浆料S的供给量使其小于腔体的体积 当模具122已经插入通孔121a并且阻挡了浆料供给口121d时，在获得模制品的步骤中，在模具122阻塞浆料供给口121d之后，将浆料S压缩成型 。