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1. 发明公开

EP1097770A4 METALLIC POWDER MOLDING MATERIAL AND ITS RE-COMPRESSION MOLDED BODY AND SINTERED BODY OBTAINED FROM THE RE-COMPRESSION MOLDED BODY AND PRODUCTION METHODS THEREOF 有权
标题翻译：金属粉末材料和物品再压缩体及烧结体再压缩方法
公开(公告)号：EP1097770A4
公开(公告)日：2004-01-02
申请号：EP00909684
申请日：2000-03-17
申请人： UNISIA JECS CORP , JFE STEEL CORP
发明人： YOSHIMURA TAKASHI , AMMA HIROYUKI , FUJINAGA MASASHI , IIJIMA MITSUMASA , HATAI YASUO , MATSUMOTO TAKAYUKI , UENOSONO SATOSHI , UNAMI SHIGERU
IPC分类号： C22C33/02 , B22F3/02
CPC分类号： C22C33/02 , B22F2998/00 , B22F2998/10 , B22F3/16 , C22C33/0228 , B22F3/02 , B22F3/10 , B22F3/20
摘要： A re-compression molded body of a metallic powder molding material having an excellent deformability suitable for obtaining high-mechanical-strength mechanical parts made from sintered metals and a sintered body obtained from the re-compression molded body, and production methods thereof comprising the following steps: In a preforming process (1), metallic powder (7), obtained by mixing metal powder (7a) mainly containing iron with preferably at least 0.1 wt.%, more preferably at least 0.3 wt.% of graphite (7b), is compact-pressed to form a preform (8) with a density of at least 7.3 g/cm3. In a temporary sintering process (2), the preform (8) is temporarily sintered at a preset temperature to form a metallic powder molding material (9) having a structure in which graphite still remains in a metal powder grain boundary. In a re-compression process (3), the metallic powder molding material (9) is re-compression-molded to obtain a re-compression molded body (10). In a re-sintering process (4), the re-compression-molded body (10) is re-sintered to obtain a sintered body (11). In a heat treating process (5), the sintered body (11) is heat-treated to obtain a heat-treated sintered body (11).

2. 发明专利

CA2355562A1 IRON-BASED SINTERED POWDER METAL BODY, MANUFACTURING METHOD THEREOF AND MANUFACTURING METHOD OF IRON-BASED SINTERED COMPONENT WITH HIGH STRENGTH AND HIGH DENSITY 未知
公开(公告)号：CA2355562A1
公开(公告)日：2002-02-28
申请号：CA2355562
申请日：2001-08-23
申请人： KAWASAKI STEEL CO , UNISIA JECS CORP
发明人： KOIZUMI SHIN , NAKAMURA NAOMICHI , HATAI YASUO , ANMA HIROYUKI , UENOSONO SATOSHI , IIJIMA MITSUMASA , UNAMI SHIGERU , FUJINAGA MASASHI , YOSHIMURA TAKASHI
IPC分类号： B22F3/12 , B22F3/10 , C22C33/02 , B22F1/00
摘要： A sintered iron-based powder metal body with outstandingly lower re-compacting load and having a high density and a method of manufacturing an iron-based sintered component with fewer pores of a sharp shape and having high strength and high density, the method comprising mixing, an iron-based metal powder containing at most about 0.05% of carbon, at most about 0.3% of oxygen, at most about 0.010% of nitrogen, with at least about 0.03% and at most about 0.5% of graphite powder and a lubricant, preliminarily compacting the mixture into a preform, the density of which is about 7.3 Mg/m3 or more, and preliminarily sintering the preform in a non-oxidizing atmosphere in which a partial pressure of nitrogen is about 30 kPa or less at a temperature of about 1000ÀC or higher and about 1300ÀC or lower, thereby forming a sintered iron-based powder metal body with outstandingly lower re-compacting load and having high deformability, the density of which is about 7.3 Mg/m3 or more and which contains at least about 0.10% and at most about 0.50 of carbon, at most about 0.010% of oxygen and at most about 0.010% of nitrogen, and which comprises at most about 0.02% of free carbon, and, further applying re- compaction and re-sintering and/or heat treatment thereby forming a sintered component, as well as the method alternatively comprising applying preliminary sintering in an atmosphere with no restriction of the nitrogen partial pressure and then annealing instead of the sintering step, thereby obtaining a sintered iron-based powder metal body with the nitrogen content of at most about 0.010.

3. 发明专利

CA2355562C IRON-BASED SINTERED POWDER METAL BODY, MANUFACTURING METHOD THEREOF AND MANUFACTURING METHOD OF IRON-BASED SINTERED COMPONENT WITH HIGH STRENGTH AND HIGH DENSITY 未知
公开(公告)号：CA2355562C
公开(公告)日：2012-07-17
申请号：CA2355562
申请日：2001-08-23
申请人： KAWASAKI STEEL CO , UNISIA JECS CORP
发明人： NAKAMURA NAOMICHI , UENOSONO SATOSHI , UNAMI SHIGERU , FUJINAGA MASASHI , YOSHIMURA TAKASHI , IIJIMA MITSUMASA , KOIZUMI SHIN , ANMA HIROYUKI , HATAI YASUO
IPC分类号： B22F3/12 , C22C33/02 , B22F1/00 , B22F3/10
摘要： A sintered iron-based powder metal body with outstandingly lower re-compacting load and having a high density and a method of manufacturing an iron-based sintered component with fewer pores of a sharp shape and having high strength and high density, the method comprising mixing, an iron-based metal powder containing at most about 0.05% of carbon, at most about 0.3% of oxygen, at most about 0.010% of nitrogen, with at least about 0.03% and at most about 0.5% of graphite powder and a lubricant, preliminarily compacting the mixture into a preform, the density of which is about 7.3 Mg/m3 or more, and preliminarily sintering the preform in a non-oxidizing atmosphere in which a partial pressure of nitrogen is about 30 kPa or less at a temperature of about 1000°C or higher and about 1300°C or lower, thereby forming a sintered iron-based powder metal body with outstandingly lower re-compacting load and having high deformability, the density of which is about 7.3 Mg/m3 or more and which contains at least about 0.10% and at most about 0.50 of carbon, at most about 0.010% of oxygen and at most about 0.010% of nitrogen, and which comprises at most about 0.02% of free carbon, and, further applying re-compaction and re-sintering and/or heat treatment thereby forming a sintered component, as well as the method alternatively comprising applying preliminary sintering in an atmosphere with no restriction of the nitrogen partial pressure and then annealing instead of the sintering step, thereby obtaining a sintered iron-based powder metal body with the nitrogen content of at most about 0.010%.

4. 发明专利

CA2334753A1 METALLIC POWDER MOLDING MATERIAL AND ITS RE-COMPRESSION MOLDED BODY AND SINTERED BODY OBTAINED FROM THE RE-COMPRESSION MOLDED BODY AND PRODUCTION METHODS THEREOF 未知
公开(公告)号：CA2334753A1
公开(公告)日：2000-10-26
申请号：CA2334753
申请日：2000-03-17
申请人： UNISIA JECS CORP , KAWASAKI STEEL CO
发明人： FUJINAGA MASASHI , AMMA HIROYUKI , HATAI YASUO , IIJIMA MITSUMASA , YOSHIMURA TAKASHI , UNAMI SHIGERU , UENOSONO SATOSHI , MATSUMOTO TAKAYUKI
IPC分类号： C22C33/02 , B22F3/02
摘要： A re-compression molded body of a metallic powder molding material having an excellent deformability suitable for obtaining high-mechanical-strength mechanical parts made from sintered metals and a sintered body obtained from the re-compression molded body, and production methods thereof comprising th e following steps: In a preforming process (1), metallic powder (7), obtained by mixing metal powder (7a) mainly containing iron with preferably at least 0.1 wt.%, more preferably at least 0.3 wt.% of graphite (7b), is compact-pressed to form a preform (8) with a density of at least 7.3 g/cm3. In a temporary sintering process (2), the preform (8) is temporarily sintered at a preset temperature to form a metallic powder molding material (9) having a structur e in which graphite still remains in a metal powder grain boundary. In a re- compression process (3), the metallic powder molding material (9) is re- compression-molded to obtain a re-compression molded body (10). In a re- sintering process (4), the re-compression-molded body (10) is re-sintered to obtain a sintered body (11). In a heat treating process (5), the sintered bo dy (11) is heat-treated to obtain a heat-treated sintered body (11).

5. 发明专利

JPH10274250A CUP-LIKE SOCKET MEMBER 失效
公开(公告)号：JPH10274250A
公开(公告)日：1998-10-13
申请号：JP9450397
申请日：1997-03-31
申请人： UNISIA JECS CORP
发明人： IIJIMA MITSUMASA , SAKAMOTO MASAO , BABA TADANORI
IPC分类号： F16D3/20 , F16D3/16
摘要： PROBLEM TO BE SOLVED: To easily provide a specified inner surface shape by forming recessed parts in the inner and outer peripheral sides of a cup-like rough shaping material corresponding to the plurality of grooves of a cup-like socket member and forming its thickness to be roughly uniform in a radial direction section over the full area of a circumferential direction. SOLUTION: Plastic working is perfomed for the inner and outer peripheral sides of a cup-like rough shaping material, and thereby a cuplike socket member 2 is formed. A shaft-shaped rough shaping material is also subjected to plastic working to form a connection shaft member 3, and thereby an outer ring member 1 composed of the cup-like socket member 2 and the connection shaft member 3 is formed as a whole. Here, when the cup-like socket member 2 is subjected to plastic working, since the cup-like rough shaping material has a thickness (t) in its radial direction section formed to be roughly uniform overt the full area of a circumferential direction, in other words since it is formed roughly uniformly in the parts of recessed parts 9 and 10 and a remaining part, without any difference produced in rigidity, it is easily formed over the full regions of the rough shaping material.

6. 发明专利

JPH10246240A OUTER RING MEMBER OF JOINT 失效
公开(公告)号：JPH10246240A
公开(公告)日：1998-09-14
申请号：JP6557197
申请日：1997-03-05
申请人： UNISIA JECS CORP
发明人： IIJIMA MITSUMASA , SAKAMOTO MASAO , BABA TADANORI
IPC分类号： F16D3/20
摘要： PROBLEM TO BE SOLVED: To easily build in rolling members by forming a plurality of cutout grooves extending in the lengthwise direction on the outer circumference side of an outer ring member in which a plurality of guide grooves for the rolling members are formed on the inner circumference side, so as to correspond to the grooves. SOLUTION: An outer ring member 1 is cup-shaped, a plurality of guide grooves 2 are formed on the inner circumference side at equal intervals in the circumferential direction, a through hole 3 for easily combining and fixing with a connecting shaft member is formed on the bottom part, and the opening end is opened toward the outside expanding the diameter. On the outer circumference side, cutout grooves 4 extending in the lengthwise direction corresponding to the guide grooves 2 are formed into nearly U-shaped section. Hereby, when rolling members are inserted into the guide grooves 2, the outer ring member is easily elastically deformed outward in the radial direction by the cutout grooves 4, and building-in is facilitated. When the outer ring member 1 is formed by pressing out of a sheet material, spring back generated in the vicinity of the cutout groove 4 is cancelled with the guide groove 2, and hence the outer ring member 1 is prevented from being deformed.

7. 发明专利

JP2002294388A IRON BASED STOCK FOR POWDER MOLDING, PRODUCTION METHOD THEREFOR AND METHOD FOR PRODUCING HIGH STRENGTH AND HIGH DENSITY IRON BASED SINTERED COMPACT 审中-公开
公开(公告)号：JP2002294388A
公开(公告)日：2002-10-09
申请号：JP2001263612
申请日：2001-08-31
申请人： KAWASAKI STEEL CO , UNISIA JECS CORP
发明人： NAKAMURA NAOMICHI , UENOSONO SATOSHI , UNAMI SHIGERU , FUJINAGA MASASHI , YOSHIMURA TAKASHI , IIJIMA MITSUMASA , KOIZUMI SUSUMU , YASUMA HIROYUKI , HATAI YASUO
IPC分类号： C22C33/02 , B22F3/02 , B22F3/10 , B22F3/24 , C22C38/00 , C22C38/46
摘要： PROBLEM TO BE SOLVED: To provide an iron based stock for powder molding which has an exceedingly low compression molding load, and high deformability, and a method for producing an iron based sintered compact which has little pores with sharp shape, and high strength and high density. SOLUTION: Iron based metal powder containing =7.3 mg/m . The molded body is subjected to sintering at >1,000 to 1,300 deg.C in a nonoxidizing atmosphere under the partial pressure of nitrogen of =7.3 Mg/m and a low load on compression molding and high deformability can be obtained. Further, the stock is subjected to compression molding and resintering and/or heat treatment and formed into a sintered member. Also, annealing can be applied thereto after the previous sintering.

8. 发明专利

JPH115126A FORMING METHOD FOR FINE SLIT 失效
公开(公告)号：JPH115126A
公开(公告)日：1999-01-12
申请号：JP16785397
申请日：1997-06-11
申请人： UNISIA JECS CORP
发明人： IIJIMA MITSUMASA , BABA TADANORI
IPC分类号： B26F1/00 , B21D28/24
摘要： PROBLEM TO BE SOLVED: To provide a method which makes it possible to reduce the production cost and mold the smooth shaped fine slits without increasing the number of the punches to mold the fine slits. SOLUTION: A punch 2 comprising a fine slit forming part 5 and a wide slit forming part 6 which follows the forming part 5, forms a fine slit 15 and a wide slit 16 which follows the slit 15 by cutting the sheet member 4 arranged on a dice 1. Then formed portion of the wide slit 16 out of the sheet member 4 is cut off. Since the punch 2 is equipped with the fine slit forming part 5 and the wide slit forming part 6, it is highly rigid. A clearance between the die 1 is then stably formed, and the fine slit 15 can be accurately formed.

9. 发明专利

JP2002137039A FORGING METHOD OF SINTERED MATERIAL 失效
公开(公告)号：JP2002137039A
公开(公告)日：2002-05-14
申请号：JP2000330105
申请日：2000-10-30
申请人： UNISIA JECS CORP
发明人： YOSHIMURA TAKASHI , IIJIMA MITSUMASA , KOIZUMI SUSUMU , HATAI YASUO
IPC分类号： B21J1/02 , B21J1/06 , B21J5/00 , B21J5/06 , B22F3/17 , B22F3/20 , C22C33/02
摘要： PROBLEM TO BE SOLVED: To develop a forming process of forged product free from defect such as crack without either enlargement and complication of equipment or deterioration in dimensional accuracy of forged product. SOLUTION: Metallic powder containing iron as a major component and a designated amount of graphite is compression molded, and the compression molded material is then sintered at 800 deg.C to 1000 deg.C to transform into a sintered material W0 whose structure has graphite remaining around grain boundary of metallic powder. The sintered material is compressed in two-way compression system up to a designated density and the compressed material W1 therefrom is further extrusion-forged, being compressed from both sides in extrusion process but reducing pressure in one side lower than the other.

10. 发明专利

JP2000140985A FORMING DEVICE FOR THIN MEMBER 失效
公开(公告)号：JP2000140985A
公开(公告)日：2000-05-23
申请号：JP31892098
申请日：1998-11-10
申请人： UNISIA JECS CORP
发明人： IIJIMA MITSUMASA , SAKAMOTO MASAO , BABA TADANORI
IPC分类号： B21J5/12 , B21J13/02 , B21K1/14
摘要： PROBLEM TO BE SOLVED: To provide a forming device capable of precisely forming outer/inner peripheral shapes of a thin member having a nearly annular cross sectional shape. SOLUTION: A forming device, by which a rough shape material is subjected to plastic working with an outside die 1 and an inside die 2 so as to obtain a thin member having a nearly annular cross sectional shape, is arranged. A forming clearance 3 to form an outer periphery and an inner periphery of the thin member to a prescribed shape is formed between the outside die 1 and the inside die 2. The forming clearance 3 is locally made small at a prescribed position in the circumferential direction.

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