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1. 发明授权

US5476534A Iron-based powder mixture and method 失效
标题翻译：铁粉混合物及方法
公开(公告)号：US5476534A
公开(公告)日：1995-12-19
申请号：US101475
申请日：1993-08-02
申请人： Kuniaki Ogura , Shigeaki Takajo , Hiroyuki Ishikawa , Akio Sonobe , Yoshiaki Maeda , Toshiyuki Minegishi
发明人： Kuniaki Ogura , Shigeaki Takajo , Hiroyuki Ishikawa , Akio Sonobe , Yoshiaki Maeda , Toshiyuki Minegishi
IPC分类号： B22F1/00 , C22C33/02 , B22F1/02
CPC分类号： B22F1/0077 , B22F1/0059 , B22F1/0096 , C22C33/0207 , B22F2998/00
摘要： An iron-based powder mixture for powder metallurgy essentially consists of a melted mixture, as a binder, which includes about 0.1% to about 1.0% by weight of a powder of at least one organic compound selected from stearic acid, oleic acid amide, and stearic acid amide, and about 0.1% to about 1.0% by weight of a powder of stearic acid bisamide; and the balance which is an iron-based powder, to the surface of which adhered about 0.1% to about 3.0% by weight of an alloying powder and/or a powder for improving machinability. Disclosed also is a method of producing the mixture.
摘要翻译：用于粉末冶金的铁基粉末混合物基本上由作为粘合剂的熔融混合物组成，其包含约0.1重量％至约1.0重量％的至少一种选自硬脂酸，油酸酰胺和硬脂酸酰胺和约0.1％至约1.0％重量的硬脂酸双酰胺粉末; 余量为铁基粉末，其表面附着在合金粉末和/或粉末中的0.1％〜约3.0％重量，以提高机械加工性。还公开了制备该混合物的方法。

2. 发明授权

US5279640A Method of making iron-based powder mixture 失效
标题翻译：制备铁基粉末混合物的方法
公开(公告)号：US5279640A
公开(公告)日：1994-01-18
申请号：US948668
申请日：1992-09-22
申请人： Kuniaki Ogura , Shigeaki Takajo , Hiroyuki Ishikawa , Akio Sonobe , Yoshiaki Maeda , Toshiyuki Minegishi
发明人： Kuniaki Ogura , Shigeaki Takajo , Hiroyuki Ishikawa , Akio Sonobe , Yoshiaki Maeda , Toshiyuki Minegishi
IPC分类号： B22F1/00 , C22C33/02 , B22F9/04
CPC分类号： B22F1/0077 , B22F1/0059 , B22F1/0096 , C22C33/0207 , B22F2998/00
摘要： An iron-based powder mixture for powder metallurgy essentially consists of a melted mixture, as a binder, which includes about 0.1% to about 1.0% by weight of a powder of at least one organic compound selected from stearic acid, oleic acid amide, and stearic acid amide, and about 0.1% to about 1.0% by weight of a powder of stearic acid bisamide; and the balance which is an iron-based powder, to the surface of which adhered about 0.1% to about 3.0% by weight of an alloying powder and/or a powder for improving machinability. Disclosed also is a method of producing the mixture.
摘要翻译：用于粉末冶金的铁基粉末混合物基本上由作为粘合剂的熔融混合物组成，其包含约0.1重量％至约1.0重量％的至少一种选自硬脂酸，油酸酰胺和硬脂酸酰胺和约0.1％至约1.0％重量的硬脂酸双酰胺粉末; 余量为铁基粉末，其表面附着在合金粉末和/或粉末中的0.1％〜约3.0％重量，以提高机械加工性。还公开了制备该混合物的方法。

3. 发明授权

US4971755A Method for preparing powder metallurgical sintered product 失效
标题翻译：粉末冶金烧结产品的制备方法
公开(公告)号：US4971755A
公开(公告)日：1990-11-20
申请号：US369069
申请日：1989-06-20
申请人： Masaki Kawano , Kuniaki Ogura , Shigeaki Takajo , Hiroshi Ohtsubo , Keisuke Yoshimura , Yoshiaki Maeda
发明人： Masaki Kawano , Kuniaki Ogura , Shigeaki Takajo , Hiroshi Ohtsubo , Keisuke Yoshimura , Yoshiaki Maeda
IPC分类号： B22F1/00 , C22C33/02
CPC分类号： C22C33/0207 , B22F1/0014 , B22F2998/10
摘要： It is disclosed a method for preparing a large-sized powder metallurgical sintered product having a superior characteristic by charging mixtures of three types of metallic powder composed of coarse particles, middle particles and fine particles into the molding die while vibrating it, heating the charged material together with the molding die, sintering them, and infiltrating metal of low melting point into the sintered body. According to this method, it is possible to get a large-sized sintered body having a superior strength and surface smoothness or a sintered body prohibiting any cracks or slits by arranging the proper particle size.

4. 发明授权

US5507853A Iron powder and mixed powder for powder metallurgy as well as method of producing iron powder 失效
标题翻译：铁粉和粉末冶金用混合粉末以及铁粉生产方法
公开(公告)号：US5507853A
公开(公告)日：1996-04-16
申请号：US456913
申请日：1995-06-01
申请人： Kuniaki Ogura , Hiroyuki Ishikawa , Takeo Omura , Yoshiaki Maeda , Minoru Nitta , Hiroshi Ohtsubo , Yutyaka Yoshii
发明人： Kuniaki Ogura , Hiroyuki Ishikawa , Takeo Omura , Yoshiaki Maeda , Minoru Nitta , Hiroshi Ohtsubo , Yutyaka Yoshii
IPC分类号： C22C32/00 , C22C33/02 , B22C1/00
CPC分类号： C22C33/0264 , C22C32/0026
摘要： This invention is to control the diffusion of C (carbon) from added graphite to particles of iron powder in the sintering to thereby improve the accuracy of dimensional change in the sintered body by using iron powder for powder metallurgy and a mixed powder thereof as a starting material in the production of sintered mechanical parts by adding the iron powder with Cu powder and graphite powder and companying and sintering them, in which 0.008-0.5 wt % in total of at least one element having a value of standard free energy of formation of oxide at 1000.degree. C. of not more than -120 kcal/l mol of O.sub.2 is included in the iron powder and not less than 20% of the element is rendered into an oxide, or 0.01-0.20 wt % in total of an oxide powder of at least one element having a value of standard free energy of formation of oxide at 1000.degree. C. of not more than -120 kcal/l mol of O.sub.2 is added to the mixed powder.
摘要翻译：本发明是为了控制在烧结中C（碳）从添加的石墨到铁粉粒子的扩散，从而通过使用粉末冶金用铁粉和其混合粉末作为起始来提高烧结体的尺寸变化的精度通过将铁粉与Cu粉末和石墨粉相加并进行烧结和烧结来制造烧结机械部件的材料，其中0.008-0.5重量％的总共至少一个元素具有标准的氧化自由能值在1000℃下，铁粉中不包括-120kcal / lmol以下的O2，不少于20％的元素变成氧化物，或0.01-0.20wt％的氧化物粉末的至少一种元素，其具有在1000℃下具有不大于-120kcal / l摩尔的O 2的氧化物形成的标准自由能的值。

5. 发明授权

US5534045A Water-atomized iron powder and method 失效
标题翻译：水雾铁粉及方法
公开(公告)号：US5534045A
公开(公告)日：1996-07-09
申请号：US440913
申请日：1995-05-15
申请人： Kuniaki Ogura , Hiroyuki Ishikawa , Yoshiaki Maeda , Kouichi Komamura
发明人： Kuniaki Ogura , Hiroyuki Ishikawa , Yoshiaki Maeda , Kouichi Komamura
IPC分类号： B22F9/08 , C22C33/02 , C22C29/00
CPC分类号： C22C33/0264 , B22F9/082 , C22C33/02 , B22F2009/0828 , B22F2998/00
摘要： Water-atomized iron powder for powder metallurgy having a hardness of particle cross section of from about Hv 80 or higher to about 250 or lower, the iron powder having been atomized with water and dried, and having a particle surface covered with oxides which are reducible in a sintering atmosphere, and which has an oxygen content of 1.0 wt % or less.The water-atomized ion powder can be made by an improved and simplified processing, and the cost of resulting sintered products is decreased as a result of its use.
摘要翻译：用于粉末冶金的水雾铁粉末，具有约Hv 80或更高至约250或更低的颗粒横截面硬度，铁粉已用水雾化并干燥，并且具有被可还原的氧化物覆盖的颗粒表面在烧结气氛中，氧含量为1.0重量％以下。水雾化的离子粉末可以通过改进和简化的加工制成，并且由于使用而导致烧结产品的成本降低。

6. 发明授权

US5458670A Iron powder and mixed powder for powder metallurgy as well as method of producing iron powder 失效
标题翻译：铁粉和粉末冶金用混合粉末以及铁粉生产方法
公开(公告)号：US5458670A
公开(公告)日：1995-10-17
申请号：US232121
申请日：1994-05-02
申请人： Kuniaki Ogura , Hiroyuki Ishikawa , Takeo Omura , Yoshiaki Maeda , Minoru Nitta , Hiroshi Ohtsubo , Yutaka Yoshii
发明人： Kuniaki Ogura , Hiroyuki Ishikawa , Takeo Omura , Yoshiaki Maeda , Minoru Nitta , Hiroshi Ohtsubo , Yutaka Yoshii
IPC分类号： C22C32/00 , C22C33/02 , B22F1/00
CPC分类号： C22C33/0264 , C22C32/0026
摘要： This invention is to control the diffusion of C (carbon) from added graphite to particles of iron powder in the sintering to thereby improve the accuracy of dimensional change in the sintered body by using iron powder for powder metallurgy and a mixed powder thereof as a starting material in the production of sintered mechanical parts by adding the iron powder with Cu powder and graphite powder and companying and sintering them, in which 0.008-0.5 wt % in total of at least one element having a value of standard free energy of formation of oxide at 1000.degree. C. of not more than -120 kcal/1 mol of O.sub.2 is included in the iron powder and not less than 20% of the element is rendered into an oxide, or 0.01-0.20 wt % in total of an oxide powder of at least one element having a value of standard free energy of formation of oxide at 1000.degree. C. of not more than -120 kcal/1 mol of O.sub.2 is added to the mixed powder.
摘要翻译： PCT No.PCT / JP93 / 01334 Sec。 371日期：1994年5月2日 102（e）日期1994年5月2日PCT提交1993年9月17日PCT公布。第WO94 / 06588号公报日本公开1994年3月31日。本发明是为了控制烧结中添加石墨C（碳）向铁粉粒子的扩散，通过使用粉末冶金用铁粉，提高烧结体尺寸变化的精度，将其作为起始原料的混合粉末，通过将铁粉与Cu粉末和石墨粉相加并进行烧结和烧结来制造烧结机械零件，其中至少一种元素的总重量为0.008-0.5重量％铁粉中含有不超过-120千卡/ 1摩尔氧的1000℃氧化物形成标准自由能，不少于20％的元素成为氧化物，或0.01-0.20重量％在混合粉末中加入至少一种具有不超过-120kcal / 1mol氧气的在1000℃下形成氧化物的标准自由能值的元素的氧化物粉末的％。

7. 发明授权

US5462577A Water-atomized iron powder and method 失效
标题翻译：水雾铁粉及方法
公开(公告)号：US5462577A
公开(公告)日：1995-10-31
申请号：US243997
申请日：1994-05-18
申请人： Kuniaki Ogura , Hiroyuki Ishikawa , Yoshiaki Maeda , Kouichi Komamura
发明人： Kuniaki Ogura , Hiroyuki Ishikawa , Yoshiaki Maeda , Kouichi Komamura
IPC分类号： B22F9/08 , C22C33/02 , B22F1/00
CPC分类号： C22C33/0264 , B22F9/082 , C22C33/02 , B22F2009/0828 , B22F2998/00
摘要： Water-atomized iron powder for powder metallurgy having a hardness of particle cross section of from about Hv 80 or higher to about 250 or lower, the iron powder having been atomized with water and dried, and having a particle surface covered with oxides which are reducible in a sintering atmosphere, and which has an oxygen content of 1.0 wt. % or less.The water-atomized ion powder can be made by an improved and simplified processing, and the cost of resulting sintered products is decreased as a result of its use.
摘要翻译：用于粉末冶金的水雾铁粉末，具有约Hv 80或更高至约250或更低的颗粒横截面硬度，铁粉已用水雾化并干燥，并且具有被可还原的氧化物覆盖的颗粒表面在烧结气氛中，氧含量为1.0重量％。％或更少。水雾化的离子粉末可以通过改进和简化的加工制成，并且由于使用而导致烧结产品的成本降低。

8. 发明授权

US4954171A Composite alloy steel powder and sintered alloy steel 失效
标题翻译：复合合金钢粉末和烧结合金钢
公开(公告)号：US4954171A
公开(公告)日：1990-09-04
申请号：US381652
申请日：1989-07-14
申请人： Shigeaki Takajo , Osamu Furukimi , Kuniaki Ogura , Keiichi Maruta , Teruyoshi Abe , Ichio Sakurada
发明人： Shigeaki Takajo , Osamu Furukimi , Kuniaki Ogura , Keiichi Maruta , Teruyoshi Abe , Ichio Sakurada
IPC分类号： C22C33/02
CPC分类号： C22C33/0264 , C22C33/0207 , C22C33/0257 , Y10T428/12181
摘要： Provided herein are high-strength high-toughness sintered alloy steel and composite alloy steel powder useful for the production thereof. The sintered alloy steel contains, as the alloy components in the final product, Ni, Mo, and/or W, and C, if necessary, said alloy being composed of 0.50-3.50 wt % of Ni, 0.65-3.50 wt % of Mo+1/2W, (and 0.3-0.8 wt % of C, if necessary), and the remainder of Fe and inevitable impurities, and has a density higher than 7.0 g/cm.sup.3 and a tensile strength higher than 130 kgf/mm.sup.2 after quenching and tempering. The composite alloy steel powder is composed of iron powder particles and powdery alloy components attached by diffusion to part of the surface of the iron powder particles, with the content of Ni and the content of Mo+1/2W in the steel powder of particle diameter smaller than 45 .infin.m being in the range of 2.0-4.2 times the average content in the entire steel powder. The sintered alloy steel has high strength and high toughness despites its comparatively low alloy composition and can be produced without any special equipment. The heat-treated sintered steel meets the requirements for automotive parts and the like.
摘要翻译： PCT No.PCT / JP88 / 01007 Sec。 371日期：1989年7月14日 102（e）日期1989年7月14日PCT提交1988年9月30日PCT公布。公开号WO89 / 02802 日本1989年4月6日。这里提出了用于制造高强度高韧性烧结合金钢和复合合金钢粉末。烧结合金钢作为最终产品中的合金成分含有Ni，Mo和/或W和C，如果需要，所述合金由0.50-3.50wt％的Ni，0.65-3.50wt％的Mo + 1 / 2W，（如果需要，为0.3〜0.8重量％的C），余量为Fe和不可避免的杂质，并且在淬火后具有高于7.0g / cm 3的密度和高于130kgf / mm 2的拉伸强度并回火。复合合金钢粉末由铁粉颗粒和粉末状合金组分组成，通过扩散到铁粉颗粒表面的一部分，其中Ni含量和Mo + 1 / 2W含量在钢粉中的粒径小于45的INFINITY m在整个钢粉末的平均含量的2.0-4.2倍的范围内。烧结合金钢具有较高的强度和高韧性，可以使其相对低的合金组成不受任何特殊的设备制造。热处理烧结钢满足汽车部件等的要求。

9. 发明授权

US4804409A Alloy steel powder for powder metallurgy 失效
标题翻译：粉末冶金用合金钢粉末
公开(公告)号：US4804409A
公开(公告)日：1989-02-14
申请号：US117151
申请日：1987-09-11
申请人： Masaki Kawano , Kuniaki Ogura , Teruyoshi Abe , Shigeaki Takajo
发明人： Masaki Kawano , Kuniaki Ogura , Teruyoshi Abe , Shigeaki Takajo
IPC分类号： B22F1/00 , C22C33/02 , C22C38/00 , C22C38/12 , C22C38/08
CPC分类号： C22C33/0264
摘要： The improvement of strength and hardness of steel powders can be realized under good compressibility by alloying 0.2.about.2.0 wt. % of W and 0.8.about.3.0 wt. % of Ni, and further 0.1.about.1.0 wt. % of Mo or 0.2.about.2.0 wt. % of Cu in steel powder, and further the reduction of dimensional deviation introduced by heat treatment after sintering can also be achieved. This substantially eliminates damaging the shape and size of the sintered body after heat treatment.

10. 发明授权

US4985309A Alloyed steel powder for powder metallurgy 失效
标题翻译：粉末冶金用合金钢粉末
公开(公告)号：US4985309A
公开(公告)日：1991-01-15
申请号：US226478
申请日：1988-08-01
申请人： Kuniaki Ogura , Junichi Oota , Teruyoshi Abe , Shigeaki Takajo
发明人： Kuniaki Ogura , Junichi Oota , Teruyoshi Abe , Shigeaki Takajo
IPC分类号： B22F1/02 , C22C33/02
CPC分类号： C22C33/0264 , B22F1/025 , C22C33/0207 , Y10T428/12181
摘要： An alloyed steel powder for metallurgy is provided with a water-atomized alloyed steel powder wherein an alloy component, an oxide of which is difficult to be reduced with hydrogen in the production of the powder, has been prealloyed in a composition range not exerting a bad influence upon compressibility of the steel powder, and an alloy component or components easier to be reduced with hydrogen than the above alloy component, the said easily reducible alloy component or components being partially diffused and adhered in a powdered form to the particle surfaces of the water-atomized alloyed steel powder.The composite powder of the invention has a coating layer of at least one element selected from nickel, copper, molybdenum and tungsten which is partially diffused and adhered in a powder form to the surface of a chromium containing prealloyed steel powder.

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