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1. 发明专利

JPS6111308B2 JPS6111308B2 - 失效
公开(公告)号：JPS6111308B2
公开(公告)日：1986-04-02
申请号：JP5452581
申请日：1981-04-10
申请人： Hitachi Funmatsu Yakin Kk
发明人： YOMO HIDEO , HAYASAKA TADAO
IPC分类号： C22C9/00 , B22F5/00 , C22C30/00 , C22C30/06 , C22C33/00 , C22C33/02 , C22C38/00 , C22C38/16 , C22C38/60

2. 发明专利

JPS6111307B2 JPS6111307B2 - 失效
公开(公告)号：JPS6111307B2
公开(公告)日：1986-04-02
申请号：JP3018581
申请日：1981-03-03
申请人： Hitachi Funmatsu Yakin Kk
发明人： ASAKA KAZUO , HAYASAKA TADAO , NAKADA TOORU
IPC分类号： B22F3/00 , C22C33/02 , C22C38/00 , H01F1/14 , H01F1/20

3. 发明专利

JPS5853704B2 JPS5853704B2 - 失效
公开(公告)号：JPS5853704B2
公开(公告)日：1983-11-30
申请号：JP14049779
申请日：1979-11-01
申请人： Hitachi Funmatsu Yakin Kk
发明人： SUZUKI NAOHIRO , ENDO HIROYUKI , ASAKA KAZUO , HAYASAKA TADAO
IPC分类号： B22F1/00 , B22F1/02 , B22F3/02 , B22F3/035 , C22C33/02 , C22C38/00

4. 发明专利

JPS5839709A PRODUCTION OF COMPOSITE SINTERED PARTS 失效
公开(公告)号：JPS5839709A
公开(公告)日：1983-03-08
申请号：JP13859281
申请日：1981-09-04
申请人： HITACHI FUNMATSU YAKIN KK
发明人： HAYASAKA TADAO
IPC分类号： B22F1/00 , B22F7/06 , C22C33/02
摘要： PURPOSE:To obtain iron-copper-base sintered parts which are firmly joined into one body by combining a green compact provided with boss parts contg. substantially no B and a green compact provided with hole parts contg. B above prescribed ratio, both of which consist essentially of iron and copper respectively and sintering the combined green compacts. CONSTITUTION:Of the above-mentioned two green compacts to be joined, the green compact provided with bosses is of the compsn. contg. essentially of iron and copper and contg. no B or contg. =0.03% B. Both are fitted to each other and are sintered, whereby intended iron-copper-base sintered parts are obtained. In other words, the former expands on progression of sintering for the characteristics of the iron-copper- type green compact, but the latter shrinks by suppressing the copper expansion phenomenon by the effect of B. Since the sintering progresses while the joining surfaces of both are held in tight contact with each other, the iron-copper sintered parts which are firmly joined to one vody are obtained.

5. 发明专利

JPS5819412A IRON-BASE SINTERED GEAR WITHSTANDING HIGH SURFACE PRESSURE 失效
公开(公告)号：JPS5819412A
公开(公告)日：1983-02-04
申请号：JP11777981
申请日：1981-07-29
申请人： HITACHI FUNMATSU YAKIN KK
发明人： SUGAYA YOSHIMI , HAYASAKA TADAO , TOKITANI MITSUOKI , WATANABE HISAKAME
IPC分类号： B22F5/08 , B22F3/24 , B22F5/00 , F16H55/06
摘要： PURPOSE:To obtain an iron-base sintered gear with enhanced fatigue resistance in the range where cracks occur and raised service limit surface pressure by hardening and tempering a selected material to form austenite phase in the surface and martensite phase in the interior. CONSTITUTION:A material forming austenite phase in the surface by hardening such as Fe-8Ni-0.45Mo-0.15Mn alloy is selected, and a sintered body of the material is manufactured. The sintered body is oil hardened from about 860 deg.C and tempered at about 180 deg.C. By the treatment austenite phase having 0.02- 0.3mm. depth is formed in the surface to improve the fittability, and the internal structure is converted into martensite phase, resulting in enhanced fatigue resistance in the range where cracks causing pitting occur. Thus, an iron-base sintered gear with raised service limit surface pressure is obtd.

6. 发明专利

JPS5645974A PREPARATION OF FRICTION MATERIAL FOR BRAKE 失效
公开(公告)号：JPS5645974A
公开(公告)日：1981-04-25
申请号：JP12016379
申请日：1979-09-20
申请人： HITACHI FUNMATSU YAKIN KK
发明人： SUZUKI NAOHIRO , OZAWA SHIGERU , IKENOUE HIROSHI , ENDOU HIROYUKI , HAYASAKA TADAO , TAKEYA YOSHIAKI
IPC分类号： C09K3/14 , F16D69/02
摘要： PURPOSE:To prepare a friction material for a brake, scarcely wearing a mold during molding, and excellent in friction characteristics, by dispersing a solid lubricant and a copper-plated hard inorganic filler in a base material of a sintered bronze alloy. CONSTITUTION:A solid lubricant, such as lead, graphite or molybdenum disulfide, and a hard inorganic filler, such as a copper-plated silica, kyanite, feldspar or ceramic, are dispersed in a base material of a sintered bronze alloy. EFFECT:It is possible to stabilize friction characteristics and to largely improve moldability.

7. 发明专利

JPS52144804A SIDE PLATES FOR GEAR PUMPS 失效
公开(公告)号：JPS52144804A
公开(公告)日：1977-12-02
申请号：JP6064276
申请日：1976-05-27
申请人： HITACHI FUNMATSU YAKIN KK
发明人： TAKEYA YOSHIAKI , HAYASAKA TADAO
IPC分类号： B22F3/26 , C22C38/00 , F04B39/00 , F04B53/00 , F04C2/12 , F04C15/00

8. 发明专利

JPS60251202A COPPER INFILTRATION METHOD IN DOUBLE-LAYERED FERROUS SINTERED BODY 失效
公开(公告)号：JPS60251202A
公开(公告)日：1985-12-11
申请号：JP10735084
申请日：1984-05-25
申请人： HITACHI FUNMATSU YAKIN KK
发明人： SUZUKI KEITAROU , ENDOU HIROYUKI , HAYASAKA TADAO
IPC分类号： B22F3/26 , B22F7/02 , B22F7/06
摘要： PURPOSE:To subject the optional part of a sintered body to Cu infiltration simultaneously with sintering by adding preliminarily a required amt. of Cu and a specific amt. of B to a green compact in the bacing metal part and sintering said green compact and the green compact in a function part in the integral or tightly adhered state at the m.p. of Cu or above. CONSTITUTION:The ferrous sintered parts which are constituted of the composite structure consisting of the function part and backing metal part made of the materials different from each other and are infiltered with Cu in the function part are produced. Required Cu and >=0.03%, by weight, B are preliminarily added to the green compact in the backing metal part in this stage. Said green compact and the green compact in the function part are sintered in the integral or tightly adhered state at the m.p. of Cu or above so that the Cu of the backing metal part is penetrated and migrated to th function part.

9. 发明专利

JPS5920707B2 失效
公开(公告)号：JPS5920707B2
公开(公告)日：1984-05-15
申请号：JP12016379
申请日：1979-09-20
申请人： HITACHI FUNMATSU YAKIN KK
发明人： SUZUKI NAOHIRO , OZAWA SHIGERU , IKENOE HIROSHI , ENDO HIROYUKI , HAYASAKA TADAO , TAKEYA YOSHIAKI
IPC分类号： C09K3/14 , F16D69/02

10. 发明专利

JPS5842702A PRODUCTION OF COMPOSITE SINTERED PARTS 失效
公开(公告)号：JPS5842702A
公开(公告)日：1983-03-12
申请号：JP13859381
申请日：1981-09-04
申请人： HITACHI FUNMATSU YAKIN KK
发明人： HAYASAKA TADAO , MASUBUCHI KUNIHIKO
IPC分类号： B22F1/00 , B22F7/02 , B22F7/06 , C22C33/02
摘要： PURPOSE:To obtain composite sintered mechanical parts wherein a ferrous green compact provided with a boss part and an iron-boron green compact provided with a hole part are formed positively to one body by a power metallurgical method by combining both members and subjecting the combined members to copper infiltering and sintering. CONSTITUTION:A green compact 1 provided with a boss part and a green compact 2 consisting of a compsn. contg. no boron or contg. up to 0.03wt% boron and provided with a hole part are formed separately by consisting of the former essentially of iron and the latter essentially of iron added with >=0.03% boron. Both green compacts 1, 2 are combined and the combined members are subjected to copper infiltering and sintering. The compact 1 is converted to an iron-copper base by the copper infiltering and is expanded by sintering. The compact 2 is converted to iron-copper-boron and is shrank relatively by the sintering. The sintering progresses in the state wherein the joined surfaces of both are tightly adhered. Further both are firmly integrated by the synergistic effect with the joining effect by the copper infiltration. This method is adapted to the production of V-pulleys, etc.

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