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1. 发明授权

US4266974A Alloy steel powder having excellent compressibility, moldability and heat-treatment property 失效
标题翻译：具有优异的压缩性，成型性和热处理性的合金钢粉末
公开(公告)号：US4266974A
公开(公告)日：1981-05-12
申请号：US88539
申请日：1979-10-26
申请人： Minoru Nitta , Yoshihiro Kajinaga , Ichio Sakurada , Kuniaki Ogura , Shunji Ito
发明人： Minoru Nitta , Yoshihiro Kajinaga , Ichio Sakurada , Kuniaki Ogura , Shunji Ito
IPC分类号： B22F1/00 , C22C33/02 , C22C38/00
CPC分类号： C22C33/0257 , B22F2998/00
摘要： An alloy steel powder having a basic alloy composition, which is composed of at least one of manganese, chromium, molybdenum and vanadium, and the remainder being iron, and having low carbon, nitrogen and oxygen contents is excellent in the compressibility and moldability at the press molding and further excellent in the carburizing property and hardenability in its sintered steel or powder forged steel.
摘要翻译：具有由锰，铬，钼和钒中的至少一种构成的基本合金组成的合金钢粉末，其余为铁，具有低碳，氮和氧含量低的合金钢粉末，其压缩性和成型性优异压制成型，并且其烧结钢或粉末锻钢的渗碳性能和淬透性更优异。

2. 发明授权

US4138250A Method for producing metal block having a high density with metal powder 失效
标题翻译：用金属粉末生产高密度金属块的方法
公开(公告)号：US4138250A
公开(公告)日：1979-02-06
申请号：US741349
申请日：1976-11-12
申请人： Yoshihiro Kajinaga , Ichio Sakurada , Shunji Ito
发明人： Yoshihiro Kajinaga , Ichio Sakurada , Shunji Ito
IPC分类号： B22F3/14 , B22F3/12 , B22F3/16 , B30B11/02 , C22C33/02 , B22F1/00
CPC分类号： B22F3/16 , B22F3/1258
摘要： A metal block having a high density can be easily obtained directly from metal powder by charging the metal powder in a metallic container, disposing carbonaceous powder through a partition plate on the metal powder so as to interrupt the metal powder from the air, uniformly heating the metal powder in the air together with the container and subjecting the metal powder in the air together with the container to a primary hot working and to a secondary hot working with or without effecting a uniform heating step.
摘要翻译：通过将金属粉末装入金属容器中，可以直接从金属粉末直接获得具有高密度的金属块，通过隔板将金属粉末放置在金属粉末上，以从空气中断金属粉末，均匀地加热空气中的金属粉末与容器一起，并将空气中的金属粉末与容器一起进行初步热加工和二次热加工，或者不影响均匀的加热步骤。

3. 发明授权

US4209320A Process for producing low-oxygen iron-base metallic powder 失效
标题翻译：生产低氧铁基金属粉末的方法
公开(公告)号：US4209320A
公开(公告)日：1980-06-24
申请号：US942023
申请日：1978-09-13
申请人： Yoshihiro Kajinaga , Minoru Nitta , Ichio Sakurada , Shunji Ito
发明人： Yoshihiro Kajinaga , Minoru Nitta , Ichio Sakurada , Shunji Ito
IPC分类号： B22F9/20 , C22C33/02 , B22F9/00
CPC分类号： C22C33/0235 , B22F9/20
摘要： A process for producing low-oxygen iron-base metallic powder are disclosed. The low-oxygen iron-base metallic powder is produced in a shaft-type apparatus comprising a preheating zone and an induction heating zone by alloying and/or admixing iron-base metallic raw powder to be subjected to a final reduction, which has an apparent density corresponding to 16 to 57% of theoretical true density, an oxygen content of not more than 6% by weight and a particle size of not more than 1 mm, with carbon or carbonaceous granule in an amount corresponding to not more than a target alloying carbon content of a final product (% by weight)+ an oxygen content of the powder just before the final reduction (% by weight).times. 1.35 to form a starting powder, preheating the starting powder at a temperature of 780.degree. to 1,200.degree. C. in a non-oxidizing atmosphere having a thermodynamically calculated oxygen partial pressure of not more than 2.1.times.10.sup.-1 mmHg and a dew point of not more than +5.degree. C. in the preheating zone to form a preheated and sintered cake (P-cake) with cylindrically sintered shell layer wherein the volume ratio of the shell layer is at least 20%, induction heating the P-cake at a temperature of 850.degree. to 1,400.degree. C. in the same atmosphere by applying an alternating power of 50 Hz to 500 kHz from power supply to effect deoxidation and decarburization to form an induction heated cake (I-cake), and then cooling and pulverizing the I-cake.
摘要翻译：公开了一种生产低氧铁基金属粉末的方法。低氧铁基金属粉末是通过合金化和/或混合铁基金属原料粉末进行最终还原而形成的预热区域和感应加热区域的轴型设备中生产的，其具有明显的密度对应于理论真密度的16〜57％，氧含量不超过6重量％，粒径不大于1mm，碳或碳质颗粒的量不大于目标合金化最终产品的碳含量（重量％）+最终还原前的粉末的氧含量（重量％）×1.35，形成起始粉末，在780〜1200℃的温度下预热起始粉末在预热区内具有不大于2.1×10-1mmHg的热力学计算的氧分压和不高于+5℃的露点的非氧化性气氛中，以形成预热和烧结的饼（P- 蛋糕）壳层的体积比至少为20％，通过施加50Hz至500kHz的交流功率，在相同气氛中在850℃至1400℃的温度下感应加热P饼电源进行脱氧脱碳，形成感应加热饼（I饼），然后冷却粉碎I饼。

4. 发明授权

US4223874A Shaft furnace for producing low-oxygen iron-base metallic powder for powder metallurgy 失效
标题翻译：用于生产用于粉末冶金的低氧铁基金属粉末的炉膛
公开(公告)号：US4223874A
公开(公告)日：1980-09-23
申请号：US938053
申请日：1978-08-30
申请人： Yoshihiro Kajinaga , Minoru Nitta , Ichio Sakurada , Shunji Ito
发明人： Yoshihiro Kajinaga , Minoru Nitta , Ichio Sakurada , Shunji Ito
IPC分类号： C21B13/02 , B22F1/00 , B22F3/00 , B22F9/20 , C21B13/04 , C21B13/06 , F27B1/08 , C22C33/02
CPC分类号： C21B13/04 , B22F3/003 , B22F9/20 , C21B13/06 , Y02P10/136
摘要： A shaft furnace for producing low-oxygen iron-base metallic powder for metallurgy is disclosed. The shaft furnace comprises a zone of storing and feeding a metallic raw powder, a preheating zone, an induction heating zone and a zone of cutting and cooling a product cake in a vertical array from top to bottom. The preheating zone and induction heating zone have a special structure for ensuring a smooth descent of the raw powder and the cake.
摘要翻译：公开了一种生产用于冶金的低氧铁基金属粉末的竖炉。竖炉包括储存和供给金属原料粉末的区域，预热区域，感应加热区域和从顶部到底部以垂直阵列切割和冷却产品饼的区域。预热区和感应加热区具有特殊的结构，可保证生粉和蛋糕的平稳下降。

5. 发明授权

US3966454A Method for producing iron or iron alloy powders having a low oxygen content 失效
标题翻译：生产氧含量低的铁或铁合金粉末的方法
公开(公告)号：US3966454A
公开(公告)日：1976-06-29
申请号：US589564
申请日：1975-06-23
申请人： Shunji Ito , Yasuaki Morioka , Yoshihiro Kajinaga , Minoru Nitta , Ichio Sakurada
发明人： Shunji Ito , Yasuaki Morioka , Yoshihiro Kajinaga , Minoru Nitta , Ichio Sakurada
IPC分类号： B22F1/00 , B22F9/22 , C22C33/02 , B22F9/00
CPC分类号： C22C33/0235 , B22F1/0088
摘要： Iron or iron alloy powders having a low oxygen content to be used for powder metallurgy are produced by subjecting iron or iron alloy powder materials having an oxygen content of not more than 8% by weight and a total carbon amount including carbon alloyed in said powders being not more than 6% by weight corresponding to the oxygen content to an induction heating under a relative density of 5-65% based on a density of the molding steel of said powders by means of an alternating current of 50 cycles-1 megacycle to heat said powders at a temperature of 750.degree.-1,400.degree.C to effect reduction rapidly.
摘要翻译：用于粉末冶金的具有低氧含量的铁或铁合金粉末是通过使氧含量不超过8重量％的铁或铁合金粉末材料和包含在所述粉末中合成的碳的总碳量为相对于相对密度为5-65％的感应加热而言，相对于所述粉末的模制钢的密度，通过50个循环的交流电（1个循环至1个热循环），不超过6重量％所述粉末在750-400℃的温度下快速降低。

6. 发明授权

US4234168A Apparatus for producing low-oxygen iron-base metallic powder 失效
标题翻译：低氧铁基金属粉末生产设备
公开(公告)号：US4234168A
公开(公告)日：1980-11-18
申请号：US942374
申请日：1978-09-14
申请人： Yoshihiro Kajinaga , Minoru Nitta , Ichio Sakurada , Shunji Ito
发明人： Yoshihiro Kajinaga , Minoru Nitta , Ichio Sakurada , Shunji Ito
IPC分类号： C22B5/10 , B22F1/00 , B22F9/20 , C22C33/02 , C21D1/40 , C21D1/42
CPC分类号： B22F9/20 , C22C33/0235
摘要： A process and an apparatus for producing low-oxygen iron-base metallic powder are disclosed. The low-oxygen iron-base metallic powder is produced by alloying and/or admixing iron-base metallic raw powder to be subjected to a final reduction, which has an apparent density in filled state corresponding to 16-57% of theoretical true density, an oxygen content of not more than 6% by weight and a particle size of not more than 1 mm, with carbon or carbonaceous granule in an amount corresponding to not more than an target alloying carbon content of a final product (% by weight) + an oxygen content of the powder just before the final reduction (% by weight) .times. 1.35 to form a starting powder, preheating the starting powder at a temperature of 780.degree.-1,130.degree. C. in a non-oxidizing atmosphere having a theoretical oxygen partial pressure of not more than 2.1.times.10.sup.-1 mmHg and a dew point of not more than +5.degree. C. to form a preheated and sintered cake (P-cake), induction heating the P-cake at a temperature of 850.degree.-1,400.degree. C. in the same atmosphere by applying an alternating power of 50 Hz to 500 kHz from power supply to effect deoxidation and decarburization to form an induction heated cake (I-cake), and then cooling and pulverizing the I-cake.
摘要翻译：公开了一种生产低氧铁基金属粉末的方法和设备。低氧铁基金属粉末是通过将铁基金属原料粉末进行合金化和/或混合来进行最终还原而制备的，该粉末的填充状态的表观密度对应于理论真密度的16-57％氧含量不超过6重量％且粒径不大于1mm，碳或碳质颗粒的量不大于最终产品的目标合金碳含量（重量％）+ 在最终还原（重量％）之前的粉末的氧含量×1.35以形成起始粉末，在具有理论氧部分的非氧化性气氛中在780℃-130℃的温度下预热起始粉末压力不大于2.1×10-1mmHg，露点不超过+5℃，形成预热烧结块（P饼），在850℃-140℃的温度下感应加热P-饼在相同的气氛中通过施加交替的力量从电源50 Hz到500 kHz，进行脱氧脱碳，形成感应加热饼（I饼），然后冷却和粉碎I-饼。

7. 发明申请

US20100284239A1 METHOD FOR MIXING RAW MATERIAL POWDER FOR POWDER METALLURGY AND METHOD FOR PRODUCING RAW MATERIAL POWDER FOR POWDER METALLURGY 有权
标题翻译：用于混合粉末冶金原料粉末的方法和用于生产用于粉末冶金的原料粉末的方法
公开(公告)号：US20100284239A1
公开(公告)日：2010-11-11
申请号：US12452857
申请日：2008-08-13
申请人： Yoshiaki Maeda , Kiyoshi Makino , Kotaro Okawa , Ichio Sakurada , Kuniaki Ogura , Yukiko Ozaki
发明人： Yoshiaki Maeda , Kiyoshi Makino , Kotaro Okawa , Ichio Sakurada , Kuniaki Ogura , Yukiko Ozaki
IPC分类号： B01F15/06
CPC分类号： B22F1/0077 , B22F1/0085 , C22C33/0264
摘要： The present invention provides a method for mixing a raw material powder for powder metallurgy that allows efficient mixing at a low cost with a simple measure and easy adjustment of the apparent density by performing first agitation mixing in which a powder mixture obtained by adding, to an iron powder, one or two or more members selected from lubricant powders, free-machining agent powders, and lubricant powders for sliding surface, an alloying powder, and a binding agent is agitated while increasing the temperature to a temperature TK equal to or higher than the melting point TM of the binding agent, the resultant is agitated while maintaining the temperature TK, and the resultant is further agitated while reducing the temperature from the temperature TK, and performing second agitation mixing in which the obtained powder mixture is agitated while cooling.
摘要翻译：本发明提供一种混合粉末冶金用原料粉末的方法，其能够通过进行第一搅拌混合，通过简单的测量和容易调节表观密度，以低成本进行有效的混合，其中将通过添加到铁粉，从润滑剂粉末，自由加工剂粉末和滑动表面用润滑剂粉末，合金粉末和粘合剂中选择的一种或两种以上的成分，同时将温度升高至等于或高于粘合剂的熔点TM，在保持温度TK的同时搅拌所得物，并且在温度TK降低温度的同时进一步搅拌所得物，并进行第二搅拌混合，其中所得粉末混合物在冷却的同时被搅拌。

8. 发明授权

US5108492A Corrosion-resistant sintered alloy steels and method for making same 失效
标题翻译：耐腐蚀烧结合金钢及其制造方法
公开(公告)号：US5108492A
公开(公告)日：1992-04-28
申请号：US465192
申请日：1990-02-22
申请人： Yoshisato Kiyota , Hiroshi Ohtsubo , Junichi Ohta , Masakazu Matsushita , Ichio Sakurada
发明人： Yoshisato Kiyota , Hiroshi Ohtsubo , Junichi Ohta , Masakazu Matsushita , Ichio Sakurada
IPC分类号： B22F3/10 , C22C33/02 , C22C38/00 , C22C38/40
CPC分类号： C22C33/02 , B22F3/101 , C22C33/0285
摘要： It is provided a method for the manufacture of a corrosion-resistant sintered alloy steel, which comprises providing a stainless steel powder; adding a binder to said steel powder; molding the mixture; and carrying out the steps of (1) heating the resultant molding to remove the binder therefrom, (2) sintering the thus debound molding under reduced pressure up to 30 Torr, and (3) further sintering at a higher temperature than those of steps (1) and (2) in a non-oxidative atmosphere under substantially atmospheric pressure. It is also provided a corrosion-resistant sintered alloy steel which comprises a stainless steel, said alloy steel having a density ratio of not less than 92%, a maximum diametric of pore present in the structure of not larger than 20 .mu.m, and a content of Cr at the surface of the steel as being sintered which is not less than 80% of a content of Cr in the inside thereof.
摘要翻译： PCT No.PCT / JP89 / 00633 Sec。 371日期1990年2月22日 102（e）日期1990年2月22日PCT提交1989年6月27日PCT公布。公开号WO90 / 00207 日本1990年1月11日提供了一种制造耐腐蚀烧结合金钢的方法，其包括提供不锈钢粉末; 向所述钢粉末添加粘合剂; 成型混合物; （1）加热所得到的模制品以除去粘合剂，（2）在减压下将脱模成型体烧结至30托，和（3）在比步骤（TM）高的温度下进一步烧结（ 1）和（2）在非氧化性气氛中在大气压下进行。还提供了一种耐腐蚀的烧结合金钢，其包括不锈钢，所述合金钢的密度比不小于92％，结构中存在的孔的最大直径不大于20μm，在烧结的钢表面的Cr含量不低于其内部的Cr含量的80％。

9. 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。

10. 发明授权

US09108246B2 Method for mixing raw material powder for powder metallurgy and method for producing raw material powder for powder metallurgy 有权
标题翻译：粉末冶金用原料粉末的粉碎冶金原料粉末的制造方法
公开(公告)号：US09108246B2
公开(公告)日：2015-08-18
申请号：US12452857
申请日：2008-08-13
申请人： Yoshiaki Maeda , Kiyoshi Makino , Kotaro Okawa , Ichio Sakurada , Kuniaki Ogura , Yukiko Ozaki
发明人： Yoshiaki Maeda , Kiyoshi Makino , Kotaro Okawa , Ichio Sakurada , Kuniaki Ogura , Yukiko Ozaki
IPC分类号： B01F15/06 , B22F1/00 , C22C33/02
CPC分类号： B22F1/0077 , B22F1/0085 , C22C33/0264
摘要： The present invention provides a method for mixing a raw material powder for powder metallurgy that allows efficient mixing at a low cost with a simple measure and easy adjustment of the apparent density by performing first agitation mixing in which a powder mixture obtained by adding, to an iron powder, one or two or more members selected from lubricant powders, free-machining agent powders, and lubricant powders for sliding surface, an alloying powder, and a binding agent is agitated while increasing the temperature to a temperature TK equal to or higher than the melting point TM of the binding agent, the resultant is agitated while maintaining the temperature TK, and the resultant is further agitated while reducing the temperature from the temperature TK, and performing second agitation mixing in which the obtained powder mixture is agitated while cooling.
摘要翻译：本发明提供一种混合粉末冶金用原料粉末的方法，其能够通过进行第一搅拌混合，通过简单的测量和容易调节表观密度，以低成本进行有效的混合，其中将通过添加到铁粉，从润滑剂粉末，自由加工剂粉末和滑动表面用润滑剂粉末，合金粉末和粘合剂中选择的一种或两种以上的成分，同时将温度升高至等于或高于粘合剂的熔点TM，在保持温度TK的同时搅拌所得物，并且在温度TK降低温度的同时进一步搅拌所得物，并进行第二搅拌混合，其中所得粉末混合物在冷却的同时被搅拌。

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