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1. 发明授权

US5380476A Method of debinding for injection molded objects 失效
标题翻译：注射成型物品脱脂方法
公开(公告)号：US5380476A
公开(公告)日：1995-01-10
申请号：US760805
申请日：1991-09-16
申请人： Masakazu Matsushita , Yoshisato Kiyota , Hiroshi Ohtsubo , Junichi Ohta
发明人： Masakazu Matsushita , Yoshisato Kiyota , Hiroshi Ohtsubo , Junichi Ohta
IPC分类号： C04B35/638 , B22F3/10 , B22F3/22 , C04B35/64
CPC分类号： B22F3/225 , B22F3/1021 , B22F3/22 , B22F2998/00
摘要： A debinding method for use in a process for producing a sintered object, by effecting a debinding pre-treatment by heating the injection-molded object in an atmosphere of reduced pressure at a temperature at which the vapor pressure of the component of the organic binder having the highest vapor pressure does not exceed the pressure of the atmosphere, thereby removing the organic binder in the amount of at least about 18 wt %; and effecting a further debinding heat treatment in which the injection-molded object is heated to and maintained at a temperature higher than the temperature in the debinding pre-treatment.
摘要翻译：一种剥离方法，用于制造烧结体的方法，通过在有机粘合剂的成分的蒸气压具有下述温度的条件下，在减压气氛下加热注射成形体，进行脱脂预处理：最高的蒸汽压力不超过大气压力，从而除去至少约18重量％的有机粘合剂; 并且进行进一步的脱模热处理，其中将注射成型物体加热并保持在高于脱模预处理温度的温度。

2. 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％。

3. 发明授权

US4964907A Sintered bodies and production process thereof 失效
标题翻译：烧结体及其制造方法
公开(公告)号：US4964907A
公开(公告)日：1990-10-23
申请号：US393765
申请日：1989-08-14
申请人： Yoshisato Kiyota , Junichi Ohta , Hiroshi Ohtsubo , Shigeaki Takajo
发明人： Yoshisato Kiyota , Junichi Ohta , Hiroshi Ohtsubo , Shigeaki Takajo
IPC分类号： B22F3/10 , B22F3/22 , H01F1/22
CPC分类号： B22F3/225 , B22F3/101 , B22F3/22 , H01F1/22 , A61F2002/30968 , B22F2998/00
摘要： A process is provided for the production of a sintered body. The process includes the following consecutive steps: (i) mixing and kneading one or more metal powders and/or one or more alloy powder with a binder into a compound, said metal and alloy powders having an average particle size not greater than 30 .mu.m, (ii) injection-molding the compound into a green body; (iii) debinding the green body to form a debound body; and (iv) subjecting the debound body to first-stage sintering at 1,050.degree.-1,250.degree. C. in a reducing or reduced-pressure atmosphere and then to second-stage sintering at a temperature in a range of 1,100.degree.-1,400.degree. C. which is higher than that of the first-stage sintering. This process can provide sintered Ti bodies and sintered magnetic bodies of the Fe-Si type, which have a density ratio of at least 95%.

4. 发明授权

US5067979A Sintered bodies and production process thereof 失效
标题翻译：烧结体及其制造方法
公开(公告)号：US5067979A
公开(公告)日：1991-11-26
申请号：US549491
申请日：1990-07-06
申请人： Yoshisato Kiyota , Junichi Ohta , Hiroshi Ohtsubo , Shigeaki Takajo
发明人： Yoshisato Kiyota , Junichi Ohta , Hiroshi Ohtsubo , Shigeaki Takajo
IPC分类号： B22F3/10 , B22F3/22 , H01F1/22
CPC分类号： B22F3/225 , B22F3/101 , B22F3/22 , H01F1/22 , A61F2002/30968 , B22F2998/00
摘要： A process is provided for the production of a sintered body. The process includes the following consecutive steps: i) mixing and kneading one or more metal powders and/or one or more alloy powder with a binder into a compound, said metal and alloy powders having an average particle size not greater than 30 .mu.m, ii) injection-molding the compound into a green body; iii) debinding the green body to form a debound body; and iv) subjecting the debound body to a first-stage sintering at 1,050.degree.-1,250.degree. C. in a reduced-pressure atmosphere and then to second-stage sintering at a temperature in a range of 1,100.degree.-400.degree. C. which is higher than that of the first-stage sintering. This process can provide sintered Ti bodies and sintered magnetic bodies of the Fe-Si type, which have a density ratio of at least 95%.
摘要翻译：提供了制造烧结体的方法。该方法包括以下连续步骤：i）将一种或多种金属粉末和/或一种或多种合金粉末与粘合剂混合并捏合到化合物中，所述金属和合金粉末的平均粒度不大于30μm， ii）将化合物注射成型为生坯; iii）剥去生坯以形成一个去皮体; 和iv）在减压气氛中使得脱氧体在1050℃-150℃下进行第一阶段烧结，然后在1100℃-400℃的温度下进行第二阶段烧结，高于一级烧结。该方法可以提供具有至少95％的密度比的Fe-Si型烧结Ti体和烧结磁体。

5. 发明授权

US5338508A Alloy steel powders for injection molding use, their compounds and a method for making sintered parts from the same 失效
标题翻译：用于注射成型的合金钢粉末，它们的化合物和从其制备烧结部件的方法
公开(公告)号：US5338508A
公开(公告)日：1994-08-16
申请号：US962607
申请日：1992-10-16
申请人： Minoru Nitta , Yoshisato Kiyota , Yukio Makiishi , Hiroshi Ohtsubo , Toshio Watanabe , Yasuhiro Habu
发明人： Minoru Nitta , Yoshisato Kiyota , Yukio Makiishi , Hiroshi Ohtsubo , Toshio Watanabe , Yasuhiro Habu
IPC分类号： B22F3/22 , C22C33/02 , C22C38/02 , C22C38/04 , C22C38/10
CPC分类号： B22F3/22 , B22F3/225 , C22C33/0285 , B22F2998/00
摘要： There is provided alloy steel powders for the injection molding use manufactured by the atomizing method which are characterized by their substantially spherical particle shape and average particle diameters of 20 microns or less, a compound for the injection molding use which contains the alloy steel powders and one or more organic binders, a process for manufacturing sintered materials in performing injection molding of compound and subsequently debinding the obtained injection molded part followed by sintering the debound part, at least the first stage of the sintering step is performed in reduced pressure atmosphere, and the sintered material having a relative density ratio of 92% or more.
摘要翻译：提供了通过雾化法制造的用于注射成型用途的合金钢粉末，其特征在于其基本上为球形颗粒形状和20微米或更小的平均粒径，用于注射成型用途的化合物，其含有合金钢粉末和一种或更多的有机粘合剂，在进行化合物的注射成型中制造烧结材料的方法，随后脱模所获得的注射成型部件，然后烧结所述脱模部分，至少所述烧结步骤的第一阶段在减压气氛中进行，相对密度比为92％以上的烧结体。

6. 发明授权

US5135566A Iron base powder mixture and method 失效
标题翻译：铁粉粉末混合物及方法
公开(公告)号：US5135566A
公开(公告)日：1992-08-04
申请号：US686846
申请日：1991-04-17
申请人： Ichio Sakuranda , Ritsuo Okabe , Takao Omura , Yoshisato Kiyota , Shigeaki Takajo
发明人： Ichio Sakuranda , Ritsuo Okabe , Takao Omura , Yoshisato Kiyota , Shigeaki Takajo
IPC分类号： B22F1/00 , C22C33/02
CPC分类号： B22F1/0077 , B22F1/0059 , C22C33/0207 , B22F2001/0066 , B22F2998/00
摘要： An iron base powder mixture for powder metallurgy, comprising an iron based powder and an alloying powder and/or a powder for improving machinability, wherein the alloying powder and/or the powder for improving machinability are adhered to the surface of the ferrous powder by means of a melted-together binder composed of an oil and a metal soap or wax.
摘要翻译： 1.一种粉末冶金用铁粉末混合物，其特征在于，含铁基粉末和合金粉末和/或粉末，以提高机械加工性，其中用于提高机械加工性的合金粉末和/或粉末通过装置粘附在铁粉的表面上由油和金属皂或蜡组成的熔融粘合剂。

7. 发明授权

US5098648A Production process for sintered Fe-Co type magetic materials 失效
标题翻译：烧结FE-CO型材料的生产工艺
公开(公告)号：US5098648A
公开(公告)日：1992-03-24
申请号：US714646
申请日：1991-06-13
申请人： Yoshisato Kiyota , Osamu Furukimi
发明人： Yoshisato Kiyota , Osamu Furukimi
IPC分类号： C22C38/00 , C22C33/02 , C22C38/10 , H01F1/22
CPC分类号： H01F1/22 , C22C33/0207 , C22C33/0285
摘要： Disclosed herein is an economical process for the production of a sintered Fe-Co type, Fe-Co-V type or Fe-Co-Cr type magnetic material, which comprises preparing an alloy powder of at least Fe and Co metals of a like powder, kneading it with an organic binder, conducting injection molding and debinding, and then conducting a two-stage sintering treatment consisting of low-temperature sintering and high-temperature sintering. Magnetic materials having a specific composition of the Fe-Co, Fe-Co-V or Fe-Co-Cr type and excellent magnetic properties and a low core loss value are also disclosed.

8. 发明授权

US5055128A Sintered Fe-Co type magnetic materials 失效
标题翻译：烧结FE-CO型磁性材料
公开(公告)号：US5055128A
公开(公告)日：1991-10-08
申请号：US460097
申请日：1990-01-24
申请人： Yoshisato Kiyota , Osamu Furukimi
发明人： Yoshisato Kiyota , Osamu Furukimi
IPC分类号： C22C38/00 , C22C33/02 , C22C38/10 , H01F1/22
CPC分类号： H01F1/22 , C22C33/0207 , C22C33/0285
摘要： Disclosed herein is an economical process for the production of a sintered Fe-Co type, Fe-Co-V type or Fe-Co-Cr type magnetic material, which comprises preparing an alloy powder of at least Fe and Co metals or a like powder, kneading it with an organic binder, conducting injection molding and debinding, and then conducting a two-stage sintering treatment consisting of low-temperature sintering and high-temperature sintering. Magnetic materials having a specific composition of the Fe-Co, Fe-Co-V or Fe-Co-Cr type and excellent magnetic properties and a low core loss value are also disclosed.
摘要翻译： PCT No.PCT / JP89 / 00537 Sec。 371 1990年1月24日第 102（e）1990年1月24日PCT PCT 1989年5月30日PCT公布。出版物WO89 / 12112 PCT 日期为1989年12月14日。本文公开的是制造Fe-Co型，Fe-Co-V型或Fe-Co-Cr型磁性材料的经济工艺，其包括制备至少为Fe 和Co金属等粉末，将其与有机粘合剂捏合，进行注塑和脱脂，然后进行由低温烧结和高温烧结组成的两阶段烧结处理。还公开了具有Fe-Co，Fe-Co-V或Fe-Co-Cr型的特定组成和优异的磁性和低铁损值的磁性材料。

9. 发明授权

US4946499A Method of preparing iron base powder mixture for pm 失效
标题翻译：制备铁基粉末混合物的方法
公开(公告)号：US4946499A
公开(公告)日：1990-08-07
申请号：US252066
申请日：1988-09-29
申请人： Ichio Sakuranda , Ritsuo Okabe , Takao Omura , Yoshisato Kiyota , Shigeaki Takajo
发明人： Ichio Sakuranda , Ritsuo Okabe , Takao Omura , Yoshisato Kiyota , Shigeaki Takajo
IPC分类号： B22F1/00 , B22F3/02 , C22C33/02 , C22C38/00 , C22C38/16
CPC分类号： B22F1/0077 , B22F1/0059 , C22C33/0207 , B22F2001/0066 , B22F2998/00
摘要： An iron base powder mixture for powder metallurgy, comprising an iron based powder and an alloying powder and/or a powder for improving machinability, wherein the alloying powder and/or the powder for improving machinability are adhered to the surface of the ferrous powder by means of a melted-together binder composed of an oil and a metal soap or wax.

10. 发明申请

US20050288170A1 Unshaped refractories 失效
$Unshaped refractories$
标题翻译：不定形耐火材料
公开(公告)号：US20050288170A1
公开(公告)日：2005-12-29
申请号：US11159797
申请日：2005-06-23
申请人： Yoshisato Kiyota
发明人： Yoshisato Kiyota
IPC分类号： C04B35/101 , C04B35/66 , C04B35/443 , C04B35/043
CPC分类号： C04B35/101 , C04B35/6263 , C04B35/62665 , C04B35/66 , C04B2235/3206 , C04B2235/3217 , C04B2235/3418 , C04B2235/5427 , C04B2235/5436 , C04B2235/5463 , C04B2235/9676
摘要： The object of the invention is to obtain an excellent characteristics concerning slag penetration-resistance, corrosion-resistance, and structural stability on usage of lining-refractory such as equipment for desiliconizing molten iron, a ladle for steel-making, a RH equipment and so forth. In order to solve a various problems that have a possibility to prohibiting the object of this invention, the unshaped refractories provide fine particles of under 0.75 mm diameter, and aggregate of 0.75-10 mm. Furthermore, the fine particles contain 10-35 mass % content of MgO, to the total mass % of the fine particles. Even furthermore, the sum total amount of MgO and Al2O3 is more than 90 mass %, to the total mass % of the fine particle. Additionally, such fine particles has 5-40 mass % of particles made of pericles-spinel, as a source of MgO, to the total mass % of the unshaped refractories. And, the aggregate comprises at least one selected from the group consisting of particles made of alumina and particles made of spinel.
摘要翻译：本发明的目的是为了获得在用于脱铁的铁水设备，炼钢用钢包，RH设备等中的耐火耐火材料的耐熔渣性，耐腐蚀性和结构稳定性方面的优异特性向前。为了解决有可能禁止本发明的目的的各种问题，不定形耐火材料提供了直径小于0.75mm的细小颗粒，并且聚集了0.75-10mm。此外，微细颗粒含有10-35质量％的MgO，相对于细颗粒的总质量％。此外，MgO和Al 2 O 3 3的总量相对于细颗粒的总质量％大于90质量％。另外，作为MgO的来源，这种细颗粒具有5-40质量％的作为未成型耐火材料的总质量％的由伯粒子 - 尖晶石制成的颗粒。并且，所述骨料包含从由氧化铝制成的颗粒和由尖晶石制成的颗粒中选择的至少一种。

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