公开(公告)号：US6049983A

公开(公告)日：2000-04-18

申请号：US903734

申请日：1997-07-31

申请人： Motohiro Miyasaka ,  Toshikazu Takehana

发明人： Motohiro Miyasaka ,  Toshikazu Takehana

IPC分类号： F16C33/10 ,  B22F3/11 ,  B22F3/24 ,  B22F5/00 ,  B30B11/02 ,  F16C33/12 ,  F16C33/14 ,  B23P15/00

CPC分类号： F16C33/104 ,  B22F3/1109 ,  F16C33/12 ,  F16C33/14 ,  B22F2998/00 ,  B22F2998/10 ,  F16C2220/20 ,  Y10T29/49673

摘要： A cylindrical sintered material is placed in a cavity composed of die, a core disposed in the center of the die, and a pair of upper and lower punches provided within the die and compressed by the upper and lower punches. A gap is provided between an internal circumferential portion of the sintered material and an external circumferential portion of the core. Consequently, when the sintered material is compressed, plastic flow is produced at both ends of the sintered material so that an internal circumferential portions at corresponding portions protrude inward in a radius direction till the internal circumferential portions come into contact with the core, so that slide portions are formed.

公开(公告)号：US5819154A

公开(公告)日：1998-10-06

申请号：US760884

申请日：1996-12-06

申请人： Bo Hu ,  Tadayuki Tsutsui ,  Kei Ishii ,  Hideo Shikata ,  Jun Sakai

发明人： Bo Hu ,  Tadayuki Tsutsui ,  Kei Ishii ,  Hideo Shikata ,  Jun Sakai

IPC分类号： B22F3/10 ,  C22C33/02 ,  B22F3/12

CPC分类号： C22C33/0228 ,  B22F3/1007

摘要： Disclosed is a sintered iron alloy, a method of manufacturing the same, a powdered mixture used for manufacturing the same and a method of modifying the surface of the iron alloy. The sintered iron alloy is produced by compacting a powdered mixture comprising: boron or boron compound which is selected from the group consisting of boron oxide, boron sulfide, boron halide, boron hydride, boric acid, borate and tetrafluoroborate; 0.1 to 2.0% by weight of graphite; and iron, and sintering it. Alternatively, the iron alloy is produced by impregnating a modifier containing boron or boron compound, into a green compact, a presintered compact or sintered body which contains iron and carbon, and heating it.

摘要翻译： 公开了一种烧结铁合金，其制造方法，其制造用粉末混合物和改性铁合金表面的方法。 烧结铁合金是通过压制粉末混合物制备的，所述混合物包含：硼或硼化合物，其选自氧化硼，硫化硼，卤化硼，硼氢化物，硼酸，硼酸盐和四氟硼酸盐; 0.1〜2.0重量％的石墨; 和铁，并烧结。 或者，通过将含有硼或硼化合物的改性剂浸渍到含有铁和碳的生坯，预烧结体或烧结体中并加热来制造铁合金。

公开(公告)号：US6159396A

公开(公告)日：2000-12-12

申请号：US858918

申请日：1997-05-19

申请人： Toyohisa Fujita ,  Kenji Yoshino

发明人： Toyohisa Fujita ,  Kenji Yoshino

IPC分类号： C10M171/00 ,  H01F1/11 ,  H01F1/34 ,  H01F1/44 ,  H01F41/02 ,  C10M169/04

CPC分类号： H01F1/447 ,  C10M171/001 ,  H01F1/112 ,  H01F1/442

摘要： An electrorheological magnetic fluid including an electrically insulating liquid and fine particles dispersed therein is described, wherein the fine particles include a fine magnetic particle as a core, wherein the fine magnetic particle has a surface which is covered by an electroconductive substance, and the fine magnetic particle with its surface covered by the electroconductive substance is completely coated with a surfactant. A process for producing the electrorheological magnetic fluid is also described.

摘要翻译： 描述了包括电绝缘液体和分散在其中的细颗粒的电磁流变磁性流体，其中微粒包括作为芯的细磁性颗粒，其中细磁颗粒具有被导电物质覆盖的表面，并且细磁 其表面被导电物质覆盖的颗粒被表面活性剂完全涂覆。 还描述了用于制造电流变磁性流体的方法。