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31. 发明专利

JP2007332423A Iron-based powder for powder metallurgy 有权
标题翻译：基于铁粉的粉末冶金
公开(公告)号：JP2007332423A
公开(公告)日：2007-12-27
申请号：JP2006166189
申请日：2006-06-15
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： ONO TOMOSHIGE , OZAKI YUKIKO , UNAMI SHIGERU
IPC分类号： B22F1/00
摘要： PROBLEM TO BE SOLVED: To provide an iron-based powder for powder metallurgy having excellent fluidity, can be uniformly charged even to a thin cavity, and also can be molded with high withdrawal force.
SOLUTION: The iron-based powder for powder metallurgy is obtained by sticking fluidity improving grains to the surface of iron powder via a binder. Preferably, the binder is one or more selected from zinc stearate, lithium stearate, calcium stearate, monoamide stearate and ethylene bisstearoamide.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供具有优异流动性的粉末冶金用铁基粉末，甚至可以均匀地填充到薄腔体，并且还可以以高退避力模制。解决方案：用于粉末冶金的铁基粉末是通过粘合剂将流动性改进颗粒粘附到铁粉表面而获得的。优选地，粘合剂是选自硬脂酸锌，硬脂酸锂，硬脂酸钙，单酰胺硬脂酸酯和亚乙基双硬脂酰胺中的一种或多种。版权所有（C）2008，JPO＆INPIT

32. 发明专利

JP2007031841A Iron-based powder mixture for warm die lubricating compaction 有权
标题翻译：基于铁粉的粉末混合物用于温度控制润滑压力
公开(公告)号：JP2007031841A
公开(公告)日：2007-02-08
申请号：JP2006256560
申请日：2006-09-22
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： UNAMI SHIGERU , OZAKI YUKIKO , UENOSONO SATOSHI
IPC分类号： B22F3/02 , B22F1/00 , C22C33/02 , C22C38/00 , C22C38/16 , C22C38/24
摘要： PROBLEM TO BE SOLVED: To provide an iron-based powder mixture for warm die lubricating compaction used for manufacturing a green compact of iron-based powder.
SOLUTION: An iron-based powder mixture containing an iron-base powder and a compaction lubricant in which a lubricant having a low melting point not higher than a prescribed compaction temperature comprises 10 to 75 mass% of the total amount of lubricant and the balance is composed of a lubricant having a melting point higher than the prescribed compaction temperature by 0.05 to 0.40 mass% is heated. A lubricant, which consists of lubricant having a melting point higher than the compaction temperature and the balance lubricant having a melting point lower than the compaction temperature, is allowed to adhere to the surface of a die by electrification. After the die is filled with the heated iron-based powder mixture, the powder mixture is compacted at prescribed temperature into a green compact. In this way, the high density green compact can be obtained by a single compaction. Further, the green compact may be sintered into a high density sintered compact.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于制造铁基粉末的生坯的用于热模头润滑压实的铁基粉末混合物。解决方案：含有铁基粉末和压实润滑剂的铁基粉末混合物，其中具有不高于规定压实温度的低熔点的润滑剂包括润滑剂总量的10至75质量％，以及余量由熔点高于规定的压实温度0.05〜0.40质量％的润滑剂组成。由熔点高于压实温度的润滑剂和具有低于压实温度的熔点的平衡润滑剂组成的润滑剂通过带电粘附到模具的表面。在加热的铁基粉末混合物填充模具后，将粉末混合物在规定温度下压实成生坯。以这种方式，可以通过单次压实获得高密度绿色压块。此外，生坯可以烧结成高密度烧结体。版权所有（C）2007，JPO＆INPIT

33. 发明专利

JP2004190051A Iron based powdery mixture for power metallurgy, and production method therefor 有权
公开(公告)号：JP2004190051A
公开(公告)日：2004-07-08
申请号：JP2002355702
申请日：2002-12-06
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： OZAKI YUKIKO , UNAMI SHIGERU , UENOSONO SATOSHI
IPC分类号： B22F3/02 , B22F1/02 , C22C33/02
摘要： PROBLEM TO BE SOLVED: To provide an iron based powdery mixture for powder metallurgy which has reduced componential segregation, and has excellent fluidity, compressibility and extractibility in the range form an ordinary temperature to a warm temperature.
SOLUTION: A mixed layer of graphite particles with a particle diameter of 0.01 to 10 μm and lubricant particles with a particle diameter of 0.01 to 10 μm is formed on the surfaces of iron based powder and auxiliary raw material powder.
COPYRIGHT: (C)2004,JPO&NCIPI

34. 发明专利

JP2004002964A Iron-based powder mixture 审中-公开
公开(公告)号：JP2004002964A
公开(公告)日：2004-01-08
申请号：JP2003013098
申请日：2003-01-22
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： UENOSONO SATOSHI , OZAKI YUKIKO , UNAMI SHIGERU
IPC分类号： B22F1/00 , B22F3/02
摘要： PROBLEM TO BE SOLVED: To provide an iron-based powder mixture having superior fluidity and hopper discharge property and also having excellent property of filling into a narrow width die.
SOLUTION: Free lubricant powder containing 0.02 to 5.0% by mass of an antistatic agent and having a nearly spherical powder shape is mixed with iron-based powder in an amount of 0.1 to

35. 发明专利

JP2003253372A METHOD FOR MANUFACTURING HIGH DENSITY IRON-BASED FORGED PARTS 审中-公开
公开(公告)号：JP2003253372A
公开(公告)日：2003-09-10
申请号：JP2002054244
申请日：2002-02-28
申请人： JFE STEEL KK , HITACHI UNISIA AUTOMOTIVE LTD
发明人： NAKAMURA NAOMICHI , UNAMI SHIGERU , UENOSONO SATOSHI , FUJINAGA MASASHI , YOSHIMURA TAKASHI , IIJIMA MITSUMASA , KOIZUMI SUSUMU , YASUMA HIROYUKI
IPC分类号： B22F3/10 , B22F3/17 , C22C33/02 , C22C38/00
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing iron-based forged parts with high density and high accuracy of dimension. SOLUTION: This manufacturing method comprises preliminarily compression molding an iron-based mixed powder containing an iron-based metal powder and a graphite powder into a compressed preform, presintering the compressed preform in a non-oxidizing atmosphere having a nitrogen partial pressure of 30 kPa or lower, at 950°C or higher but 1,300°C or lower, or further annealing it into a material to be formed, and subjecting it to full enclosed die forging or closed die forging. The density of the compressed preform is preferably less than 7.3 Mg/m 3 . COPYRIGHT: (C)2003,JPO

36. 发明专利

JP2003247003A STEEL ALLOY POWDER FOR POWDER METALLURGY 审中-公开
公开(公告)号：JP2003247003A
公开(公告)日：2003-09-05
申请号：JP2002043912
申请日：2002-02-20
申请人： JFE STEEL KK
发明人： NAKAMURA NAOMICHI , UNAMI SHIGERU , UENOSONO SATOSHI
IPC分类号： B22F1/02 , C22C38/00 , C22C38/12
摘要： PROBLEM TO BE SOLVED: To provide steel alloy powder for powder metallurgy in which high compressibility and high sinterability are reconciled to increase the molded density of a molding, and to reduce opening holes as well. SOLUTION: Into the surfaces of particles of iron based powder having a composition containing, by mass, ≤1.0% Mn and 0.2 to 1.5% Mo so as to be prealloyed, and the balance Fe with inevitable impurities, 0.2 to 10.0% Mo is incorporated in the form of diffused and stuck powder. COPYRIGHT: (C)2003,JPO

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