公开(公告)号：US5268140A

公开(公告)日：1993-12-07

申请号：US830234

申请日：1992-01-31

申请人： Howard G. Rutz ,  Christopher Oliver ,  Francis G. Hanejko ,  Brooks Quin

发明人： Howard G. Rutz ,  Christopher Oliver ,  Francis G. Hanejko ,  Brooks Quin

IPC分类号： B22F1/02 ,  B22F3/00 ,  B22F3/14 ,  C22C32/00 ,  C22C33/02 ,  H01F1/26 ,  H01F41/02 ,  B22F1/00 ,  C04B35/04 ,  H01F1/00

CPC分类号： C22C32/0094 ,  H01F1/26

摘要： A method is provided for producing a high strength iron based component by powder metallurgical techniques but without sintering. A powder composition of iron-based particles coated or admixed with a thermoplastic material is compacted under heat and pressure by traditional powder metallurgical techniques. The pressed component is then heat treated at a temperature above the glass transition temperature of the thermoplastic material for a time sufficient to bring the component to the heat treatment process temperature. The resulting component has increased strength and can be used as a structural component or as a magnetic core component.

公开(公告)号：US5306524A

公开(公告)日：1994-04-26

申请号：US945166

申请日：1992-09-15

申请人： Howard G. Rutz ,  Christopher Oliver ,  Brooks Quin

发明人： Howard G. Rutz ,  Christopher Oliver ,  Brooks Quin

IPC分类号： B22F1/00 ,  C22C33/02 ,  H01F1/20 ,  H01F1/26 ,  H01F3/08 ,  H01F41/02 ,  B05D7/00

CPC分类号： C22C33/0228 ,  B22F1/0059 ,  H01F1/20 ,  H01F1/26 ,  H01F3/08 ,  H01F41/0246 ,  Y10S264/58 ,  Y10T428/2998

摘要： An iron powder composition comprising an iron powder coated with a substantially uniform coating of a thermoplastic material and admixed with a boron nitride powder and a method of utilizing the mixture to produce a magnetic core component is provided. The iron powder mixture is formulated with up to about 1% by weight of boron nitride which reduces the stripping and sliding die ejection pressures during high temperature molding and also improves the permeability of the magnetic part over an extended frequency range.

摘要翻译： 提供一种铁粉组合物，其包含涂覆有热塑性材料的基本上均匀的涂层并与氮化硼粉末混合的铁粉末以及利用该混合物产生磁芯组分的方法。 铁粉混合物配制高达约1重量％的氮化硼，这降低了高温成型期间的剥离和滑动模具喷射压力，并且还改善了磁性部件在扩展的频率范围内的磁导率。

公开(公告)号：US5198137A

公开(公告)日：1993-03-30

申请号：US701776

申请日：1991-05-17

申请人： Howard G. Rutz ,  Christopher Oliver ,  Brooks Quin

发明人： Howard G. Rutz ,  Christopher Oliver ,  Brooks Quin

IPC分类号： B22F1/00 ,  B22F1/02 ,  C08K3/22 ,  C08K3/34 ,  C08K3/38 ,  C08L101/00 ,  C09C1/62 ,  C22C33/02 ,  H01F1/20 ,  H01F1/26 ,  H01F3/08 ,  H01F41/02

CPC分类号： H01F1/20 ,  B22F1/0059 ,  C22C33/0228 ,  H01F1/26 ,  H01F3/08 ,  H01F41/0246 ,  Y10T428/24992 ,  Y10T428/256 ,  Y10T428/2998 ,  Y10T428/31507 ,  Y10T428/31533 ,  Y10T428/31721

摘要： An iron powder composition comprising an iron powder coated with a substantially uniform coating of a thermoplastic material and admixed with a boron nitride powder and a method of utilizing the mixture to produce a magnetic core component is provided. The iron powder mixture is formulated with up to about 1% by weight of boron nitride which reduces the stripping and sliding die ejection pressures during high temperature molding and also improves the permeability of the magnetic part over an extended frequency range.

摘要翻译： 提供一种铁粉组合物，其包含涂覆有热塑性材料的基本上均匀的涂层并与氮化硼粉末混合的铁粉末以及利用该混合物产生磁芯组分的方法。 铁粉混合物配制高达约1重量％的氮化硼，这降低了高温成型期间的剥离和滑动模具喷射压力，并且还改善了磁性部件在扩展的频率范围内的磁导率。

公开(公告)号：US5484469A

公开(公告)日：1996-01-16

申请号：US372138

申请日：1995-01-13

申请人： Howard G. Rutz ,  Sidney Luk

发明人： Howard G. Rutz ,  Sidney Luk

IPC分类号： B22F1/00 ,  B22F3/02 ,  C22C33/02 ,  B22F5/00

CPC分类号： C22C33/0264 ,  B22F1/0059 ,  B22F1/0077 ,  B22F3/02 ,  B22F2001/0066 ,  B22F2003/023 ,  B22F2003/145 ,  B22F2998/00

摘要： Methods of making sintered parts from a metal powder composition that contains an amide lubricant are provided. The composition comprises an iron-based powder and a lubricant that is the reaction product of a monocarboxylic acid, a dicarboxylic acid, and a diamine. The composition is compacted in a die, preferably at an elevated temperature of up to about 370.degree. C., at conventional compaction pressures, and then sintered according to standard powder-metallurgical techniques.

摘要翻译： 提供了由含有酰胺润滑剂的金属粉末组合物制造烧结部件的方法。 该组合物包含铁基粉末和作为单羧酸，二羧酸和二胺的反应产物的润滑剂。 组合物在模具中压实，优选在高达约370℃的高温下以常规压实压力压实，然后根据标准的粉末冶金技术进行烧结。

公开(公告)号：US5397530A

公开(公告)日：1995-03-14

申请号：US190269

申请日：1994-02-02

申请人： K. S. V. L. Narasimhan ,  Johan Arvidsson ,  Howard G. Rutz ,  W. John Porter, Jr.

发明人： K. S. V. L. Narasimhan ,  Johan Arvidsson ,  Howard G. Rutz ,  W. John Porter, Jr.

IPC分类号： B22F1/00 ,  B22F1/02 ,  B22F3/12 ,  B22F3/14 ,  B22F3/16

CPC分类号： B22F1/0085

摘要： A method for heating metal powder, e.g., iron powder, comprises irradiating the powder with microwaves. The powder may be coated with various materials to enhance the heating effects of the microwave. For example, the powder may be coated with a non-emissive material, such as a ceramic material. The powder may also be coated with a dipole material, such as water or plastic, or a dielectric material.

摘要翻译： 用于加热金属粉末，例如铁粉的方法包括用微波照射粉末。 粉末可以用各种材料涂覆以增强微波的加热效果。 例如，粉末可以涂覆有非发射材料，例如陶瓷材料。 粉末也可以涂覆有偶极材料，例如水或塑料或电介质材料。

公开(公告)号：US5543174A

公开(公告)日：1996-08-06

申请号：US356138

申请日：1994-12-15

申请人： Howard G. Rutz

发明人： Howard G. Rutz

IPC分类号： B22F1/00 ,  C22C33/02 ,  H01F1/20 ,  H01F1/26 ,  H01F3/08 ,  H01F41/02 ,  B05D7/00

CPC分类号： C22C33/0228 ,  B22F1/0059 ,  H01F1/20 ,  H01F1/26 ,  H01F3/08 ,  H01F41/0246 ,  Y10S264/58 ,  Y10T428/2998

摘要： An iron powder composition comprising an iron powder coated with a substantially uniform coating of a thermoplastic material and admixed with a boron nitride powder and a method of utilizing the mixture to produce a magnetic core component is provided. The iron powder mixture is formulated with up to about 1% by weight of boron nitride which reduces the stripping and sliding die ejection pressures during high temperature molding and also improves the permeability of the magnetic part over an extended frequency range.

摘要翻译： 提供一种铁粉组合物，其包含涂覆有热塑性材料的基本上均匀的涂层并与氮化硼粉末混合的铁粉末以及利用该混合物产生磁芯组分的方法。 铁粉混合物配制高达约1重量％的氮化硼，这降低了高温成型期间的剥离和滑动模具喷射压力，并且还改善了磁性部件在扩展的频率范围内的磁导率。

公开(公告)号：US5154881A

公开(公告)日：1992-10-13

申请号：US835808

申请日：1992-02-14

申请人： Howard G. Rutz ,  Sidney Luk

发明人： Howard G. Rutz ,  Sidney Luk

IPC分类号： B22F1/00 ,  B22F3/02 ,  C22C33/02

CPC分类号： C22C33/0264 ,  B22F1/0059 ,  B22F1/0077 ,  B22F3/02 ,  B22F2001/0066 ,  B22F2003/023 ,  B22F2003/145 ,  B22F2998/00

摘要： Methods of making sintered parts from a metal powder composition that contains an amide lubricant are provided. The composition comprises an iron-based powder and a lubricant that is the reaction product of a monocarboxylic acid, a dicarboxylic acid, and a diamine. The composition is compacted in a die, preferably at an elevated temperature of up to about 370.degree. C., at conventional compaction pressures, and then sintered according to standard powder-metallurgical techniques.