-
公开(公告)号：US20080001692A1
公开(公告)日：2008-01-03
申请号：US10595681
申请日：2004-10-28
CPC分类号： H01F3/08 , H01F1/26 , H01F41/0246
摘要： To improve chemical resistance and heat resistance of an electromagnet core used for a liquid fuel injector. A core is formed by using a binder for a soft magnetic powder, wherein the binder is made of a polyimide resin having a molecular structure having a thermal and chemical stability. A volume ratio of the binder made of the polyimide resin to the soft magnetic powder is in a range of from 0.05 wt % to 1.0 wt %. Since the heat resistance and the chemical resistance of the core can be improved, the core can be used for a valve control electromagnet used for a liquid fuel injector and effectively operated when the core is attached to an engine.
摘要翻译： 用于提高用于液体燃料喷射器的电磁铁芯的耐化学性和耐热性。 通过使用用于软磁性粉末的粘合剂形成芯，其中粘合剂由具有热和化学稳定性的分子结构的聚酰亚胺树脂制成。 由聚酰亚胺树脂制成的粘合剂与软磁性粉末的体积比在0.05重量％〜1.0重量％的范围内。 由于可以提高芯的耐热性和耐化学药品性，所以可以将芯体用于液体燃料喷射器的阀门控制电磁铁，并且在芯体安装在发动机上时有效地进行操作。
-
12.发明申请Method for Producing Composite Soft Magnetic Material Having High Strength and High Specific Resistance 审中-公开生产具有高强度，高电阻率的复合软磁材料的方法公开(公告)号：US20070269332A1
公开(公告)日：2007-11-22
申请号：US10595595
申请日：2004-10-28
CPC分类号： C22C33/0214 , B22F3/12 , B22F2998/10 , C22C2202/02 , H01F1/26 , H01F41/0246 , B22F1/02 , B22F1/0077 , B22F3/02 , B22F3/10
摘要： The present invention relates to composite soft magnetic materials having high strength and high specific resistance and a method of producing such materials by: heating mixture powder having a composition containing 0.05-1 wt % of polyimide resin powder having an average particle diameter of 1 to 100 μm, 0.002-0.1 wt % of fine amide-based wax powder having an average particle diameter of 1 to 20 μm, and the balance composed of insulating film-coated soft magnetic powder obtained by forming an insulating film on the surface of soft magnetic powder, at a temperature of 60 to 110° C.; filling the heated mixture powder in a mold which is heated at a temperature of 100 to 150° C.; compacting the heated mixture powder at a molding pressure of 700 to 1200 MPa to obtain a compact; and curing the obtained compact at a temperature of 225 to 300 ° C.
摘要翻译： 本发明涉及具有高强度和高电阻率的复合软磁性材料及其制造方法，该方法是：将具有0.05-1重量％的平均粒径为1至100的聚酰亚胺树脂粉末的组合物的混合物粉末加热 母体，0.002〜0.1重量％的平均粒径为1〜20μm的细酰胺系蜡粉末，余量由在软磁性粉末的表面形成绝缘膜得到的绝缘膜包覆的软磁性粉末 ，温度为60〜110℃。 将加热的混合物粉末填充在在100至150℃的温度下加热的模具中; 在700〜1200MPa的成形压力下压制加热的混合物粉末，得到成型体; 并在225-300℃的温度下固化所得成形体。
-
13.发明申请R-T-B-BASED RARE EARTH MAGNET PARTICLES, PROCESS FOR PRODUCING THE R-T-B-BASED RARE EARTH MAGNET PARTICLES, AND BONDED MAGNET 审中-公开基于R-T-B的稀土磁体颗粒，用于生产基于R-T-B的稀土磁体颗粒和粘结磁体的方法公开(公告)号：US20140326363A1
公开(公告)日：2014-11-06
申请号：US14342930
申请日：2012-08-30
CPC分类号： H01F1/0571 , C22C33/02 , C22C38/00 , C22C38/002 , C22C38/005 , C22C38/06 , C22C38/10 , C22C38/14 , C22C2202/02 , H01F1/0573 , H01F1/0576 , H01F1/0578 , H01F41/0266
摘要： The present invention provides R-T-B-based rare earth magnet particles comprising no expensive rare resources such as Dy and having an excellent coercive force which can be produced by HDDR treatment without any additional steps. The present invention relates to R-T-B-based rare earth magnet particles comprising crystal grains comprising a magnetic phase of R2T14B, and a grain boundary phase, in which the grain boundary phase has a composition comprising R in an amount of not less than 13.5 atom % and not more than 35.0 atom % and Al in an amount of not less than 1.0 atom % and not more than 7.0 atom %. The R-T-B-based rare earth magnet particles can be obtained by controlling heat treatment conditions in the DR step of the HDDR treatment in the course of subjecting a raw material alloy to the HDDR treatment.
摘要翻译： 本发明提供了不含昂贵稀有资源如Dy的R-T-B系稀土磁体颗粒，具有优异的矫顽力，可通过HDDR处理而无需任何附加步骤。 本发明涉及包含R2T14B的磁性相的晶粒和晶界相的RTB系稀土类磁铁粒子，其中，晶界相的组成为不低于13.5原子％的R， 不大于35.0原子％，Al为1.0原子％以上7.0原子％以下的Al。 通过控制HDDR处理的DR步骤中的原料合金进行HDDR处理的过程中的热处理条件，可以得到R-T-B系稀土类磁体粒子。
-
-
搜索结果
13 条记录 (耗时 0.019 秒)
