公开(公告)号：US06534564B2

公开(公告)日：2003-03-18

申请号：US09865082

申请日：2001-05-24

Applicant: Francis G. Hanejko ,  Sydney Luk ,  Kalathur S. V. L. Narasimhan

Inventor： Francis G. Hanejko ,  Sydney Luk ,  Kalathur S. V. L. Narasimhan

IPC: B22C100

CPC classification number: B22F1/0059 ,  B22F2998/10 ,  B22F2999/00 ,  B22F3/02 ,  B22F2003/248 ,  B22F2202/15 ,  B22F2203/01

Abstract: A method is provided for compacting metal-based powder compositions containing at least one thermoplastic material at temperatures below the glass transition temperature or melting temperature of the thermoplastic material to form a metal-based component. Preferably, compaction is carried out at temperatures ranging from ambient to about 55° C. The method of the present invention is particularly useful for making magnetic core components. The present invention also provides metal-based powder compositions useful for cold compaction. The metal based powder compositions contain metal-based particles containing no iron phosphate layer; a thermoplastic material selected from polyetherimides, polyphenylene ethers, polyethersulfones, polycarbonates, polyethylene glycol, polyvinyl acetate, polyvinyl alcohol or combinations thereof, and an oligomer of a polyamide.

Abstract translation: 提供了一种用于在低于热塑性材料的玻璃化转变温度或熔融温度的温度下压制含有至少一种热塑性材料的金属基粉末组合物以形成金属基组分的方法。 优选地，在环境温度至约55℃的温度下进行压实。本发明的方法对于制造磁芯组件特别有用。 本发明还提供了用于冷压缩的金属基粉末组合物。 金属粉末组合物含有不含铁磷酸盐层的金属类颗粒; 选自聚醚酰亚胺，聚苯醚，聚醚砜，聚碳酸酯，聚乙二醇，聚乙酸乙烯酯，聚乙烯醇或其组合的热塑性材料和聚酰胺的低聚物。

公开(公告)号：US6126715A

公开(公告)日：2000-10-03

申请号：US477835

申请日：2000-01-05

Applicant: Sydney Luk

Inventor： Sydney Luk

IPC: B22F1/00 ,  C22C32/00 ,  H01F1/26 ,  H01F41/02 ,  B22F9/02

CPC classification number: C22C32/0094 ,  B22F1/0059 ,  H01F1/26 ,  H01F41/0246 ,  B22F2003/023 ,  B22F2003/145 ,  B22F2998/00

Abstract: Metallurgical powder compositions are provided that contain a metal powder that is associated with a polymeric material in admixture with a solid, particulate polyether lubricant. The incorporation of the polyether lubricant enhances the green strength properties of compacted parts made from the powder compositions, and generally reduces the ejection forces required to remove the compacted part from the die cavity.

Abstract translation: 提供了包含与聚合物材料相结合的金属粉末的冶金粉末组合物，其与固体颗粒状聚醚润滑剂混合。 聚醚润滑剂的加入增强了由粉末组合物制成的压实部件的生坯强度性能，并且通常降低了从模腔中移除压实部件所需的喷射力。

公开(公告)号：US5767426A

公开(公告)日：1998-06-16

申请号：US818149

申请日：1997-03-14

Applicant: Christopher G. Oliver ,  Sydney Luk

Inventor： Christopher G. Oliver ,  Sydney Luk

IPC: B22F1/00 ,  C08K3/08 ,  H01F1/26 ,  B22F3/00

CPC classification number: H01F1/26 ,  B22F1/0059 ,  C08K3/08 ,  Y10S428/928

Abstract: This invention presents, inter alia, novel iron-based powder compositions and compacted articles made from the same. The novel iron-based powder compositions of the invention are formulated with a fluoric resin, such as polytetrafluoroethylene, which provides powder mixtures with good flow properties and good uniformity. Compacted articles made from the novel iron-based powder compositions of the invention show reduced core losses and have good magnetic permeability over an extended frequency range. These compacted articles also exhibit high green density and good ejection characteristics.

Abstract translation: 本发明特别提出了由其制成的新型铁基粉末组合物和压实制品。 本发明的新型铁基粉末组合物用氟树脂如聚四氟乙烯配制，其提供具有良好流动性和良好均匀性的粉末混合物。 由本发明的新型铁基粉末组合物制成的压制制品显示出减小的磁芯损耗并且在扩展的频率范围内具有良好的磁导率。 这些压实制品还表现出高的绿色密度和良好的喷射特性。

公开(公告)号：US5518639A

公开(公告)日：1996-05-21

申请号：US289783

申请日：1994-08-12

Applicant: Sydney Luk ,  Ann Lawrence

Inventor： Sydney Luk ,  Ann Lawrence

IPC: C10M103/02 ,  B22F3/02 ,  C10M103/06 ,  C10M107/00 ,  C10M107/32 ,  C10M111/02 ,  C10M111/04 ,  C10N10/12 ,  C10N40/20 ,  C10M105/00 ,  C10M125/00

CPC classification number: C10M111/02 ,  C10M107/00 ,  C10M111/04 ,  B22F2003/026 ,  B22F2998/00 ,  C10M2201/041 ,  C10M2201/0413 ,  C10M2201/042 ,  C10M2201/0423 ,  C10M2201/0603 ,  C10M2201/0613 ,  C10M2201/0623 ,  C10M2201/0653 ,  C10M2201/066 ,  C10M2201/0663 ,  C10M2201/0803 ,  C10M2201/0853 ,  C10M2201/0863 ,  C10M2201/0873 ,  C10M2201/1006 ,  C10M2201/1023 ,  C10M2201/1033 ,  C10M2201/1053 ,  C10M2201/123 ,  C10M2203/02 ,  C10M2203/022 ,  C10M2203/024 ,  C10M2203/04 ,  C10M2205/003 ,  C10M2207/021 ,  C10M2207/023 ,  C10M2207/08 ,  C10M2207/2875 ,  C10M2207/2885 ,  C10M2207/289 ,  C10M2207/2895 ,  C10M2209/04 ,  C10M2209/043 ,  C10M2209/06 ,  C10M2209/0606 ,  C10M2209/062 ,  C10M2209/1033 ,  C10M2209/104 ,  C10M2209/1045 ,  C10M2209/1055 ,  C10M2209/1065 ,  C10M2209/1075 ,  C10M2209/1085 ,  C10M2209/1095 ,  C10M2211/06 ,  C10M2213/00 ,  C10M2213/02 ,  C10M2213/023 ,  C10M2213/043 ,  C10M2213/0606 ,  C10M2213/062 ,  C10M2213/0623 ,  C10M2217/0206 ,  C10M2217/0225 ,  C10M2217/0235 ,  C10M2217/0245 ,  C10M2217/0265 ,  C10M2217/028 ,  C10M2217/0285 ,  C10M2217/06 ,  C10N2220/02

Abstract: The present invention provides lubricant compositions for the powder metallurgical field. The lubricant compositions contain a solid phase lubricant such as graphite, molybdenum disulfide, and polytetrafluoroethylene in combination with a liquid phase lubricant that is a binder for the solid phase lubricant. The binder can be chosen from various classes of compounds including polyethylene glycols, polyethylene glycol esters, partial esters of C.sub.3-6 polyhydric alcohols, polyvinyl esters, and polyvinyl pyrrolidones. The binder is solubilized in an organic solvent.

Abstract translation: 本发明提供了用于粉末冶金领域的润滑剂组合物。 润滑剂组合物含有固相润滑剂如石墨，二硫化钼和聚四氟乙烯以及作为固相润滑剂的粘合剂的液相润滑剂。 粘合剂可以选自各种类型的化合物，包括聚乙二醇，聚乙二醇酯，C3-6多元醇的偏酯，聚乙烯基酯和聚乙烯吡咯烷酮。 将粘合剂溶解在有机溶剂中。