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1. 发明专利

JPS6013062A SINTERED ALLOY MATERIAL FOR VALVE SEAT 失效
公开(公告)号：JPS6013062A
公开(公告)日：1985-01-23
申请号：JP12045783
申请日：1983-07-01
申请人： TOYOTA MOTOR CO LTD , SUMITOMO ELECTRIC INDUSTRIES
发明人： SUGANUMA TETSUYA , KAZUOKA KOUJI , KUROISHI ATSUSHI , MOTOOKA NAOKI
IPC分类号： F01L3/02 , C22C33/02 , C22C38/00 , C22C38/52
摘要： PURPOSE:To obtain a sintered alloy material for a valve seat having increased holding power when fixed on an engine head by forming a two-layered structure consisting of a valve seat face layer of a heat and wear resistant sintered alloy and a valve head face layer of a heat and creep resistant sintered alloy. CONSTITUTION:This material for a valve seat consists of two layers united to one body by sintering. The layers are a valve seat face layer of a sintered alloy with superior heat and wear resistances and a valve head face layer of a sintered alloy which is superior to the alloy of the valve seat face layer in heat and creep resistances. The alloy of the valve head face layer has a composition consisting of, by weight, 11-15% Cr, 0.4-2.0% Mo, 0.05-0.3% C and the balance Fe with impurities. The alloy of the valve seat face layer has a composition consisting of, by weight, 4-8% Co, 0.6-1.5% Cr, 4-8% Mo, 1-3% Ni, 0.3-1.5% C, 0.2-0.6% Ca and the balance Fe with impurities and contg. Co, Cr and Mo dispersed in the Fe matrix chiefly as a hard Co-Cr-Mo alloy and a hard Fe-Mo alloy.

2. 发明专利

JPS61505A SINTERED-ALLOY VALVE SEAT MATERIAL AND ITS MANUFACTURE 失效
公开(公告)号：JPS61505A
公开(公告)日：1986-01-06
申请号：JP12130284
申请日：1984-06-12
申请人： TOYOTA MOTOR CO LTD , SUMITOMO ELECTRIC INDUSTRIES
发明人： MANABE AKIRA , SUGANUMA TETSUYA , KUROISHI ATSUSHI , MOTOOKA NAOKI
IPC分类号： F01L3/02 , B22F3/26 , B22F5/00 , B22F7/06 , C22C38/00 , C22C38/12 , C22C38/52
摘要： PURPOSE:To obtain the titled valve seat material with enhanced heat resistance and fatigue strength by sintering temporarily a sintered alloy valve mating material consisting of a layer on the valve-contact surface side and a layer on the head seat surface side, and infiltrating copper into the valve-contact surface in a converted gas atmosphere. CONSTITUTION:A layer on the head seat surface side consisting of 11-15%, by weight, Cr, 0.4-2.0% Mo, 0.05-0.3% C, and the remainder of Fe and impurities and a layer on the valve-contact surface side consisting of 4-8% Co, 0.5-1.5% Cr, 4-8% Mo, 1-3% Ni, 0.3-1.5% C, 0.2-0.6% Ca, and the remainder of Fe and impurities are sintered to obtain a united body. The two-layered sintered body is treated with copper infiltration at 1,100-1,150 deg.C in a converted gas atmosphere, and only the layer on the valve-contact surface side is infiltrated with copper. Consequently, a sintered alloy valve mating material having high extracting load and excellent resistance to heat and creep can be obtained.

3. 发明专利

JPS6013055A SINTERED ALLOY MATERIAL FOR VALVE SEAT 失效
公开(公告)号：JPS6013055A
公开(公告)日：1985-01-23
申请号：JP12045883
申请日：1983-07-01
申请人： TOYOTA MOTOR CO LTD , SUMITOMO ELECTRIC INDUSTRIES
发明人： SUGANUMA TETSUYA , KAZUOKA KOUJI , KUROISHI ATSUSHI , MOTOOKA NAOKI
IPC分类号： F01L3/02 , C22C33/02 , C22C38/00 , C22C38/22
摘要： PURPOSE:To obtain a sintered alloy material for a valve seat having increased holding power when fixed on an engine head by forming a two-layered structure consisting of a valve seat face layer of a heat and wear resistant sintered alloy and a valve head face layer of a heat and creep resistant sintered alloy. CONSTITUTION:This material for a valve seat for an internal-combustion engine or the like has a two-layered structure consisting of two layers united to one body by sintering. The layers are a valve seat face layer of a sintered alloy with superior heat and wear resistances and a valve head face layer of a sintered alloy which is much superior to the alloy of the valve seat face layer in heat and creep resistances. The rate of dimensional change of an alloy to be sintered to form the valve head face layer during sintering is close to that of an alloy to be sintered to form the valve seat face layer. By the two-layered structure, the dimensional difference between the valve seat face layer and the valve head face layer in inside and outside diameters after sintering can be reduced without deteriorating the strength, and the cost of starting materials and the cost of working can be saved.

4. 发明专利

JPS61561A SINTERED ALLOY MATERIAL FOR VALVE SEAT 失效
公开(公告)号：JPS61561A
公开(公告)日：1986-01-06
申请号：JP12130184
申请日：1984-06-12
申请人： TOYOTA MOTOR CO LTD , SUMITOMO ELECTRIC INDUSTRIES
发明人： MANABE AKIRA , SUGANUMA TETSUYA , KUROISHI ATSUSHI , MOTOOKA NAOKI
IPC分类号： F01L3/02 , C22C38/00 , C22C38/22 , C22C38/44
摘要： PURPOSE:To obtain a sintered alloy material for a valve seat having improved heat resistance and thermal fatigue strength by uniting a valve working face layer and a valve head seat face layer each made of a sintered alloy having superior specified properties to one body and by infiltrating copper into the body. CONSTITUTION:A valve working face layer is made of a sintered alloy consisting of, by weight, 11-15% Cr, 0.4-2.0% Mo, 0.05-0.3% C and the balance Fe with impurities and having superior heat and wear resistances. A valve head seat face layer is made of a sintered alloy consisting of 4-8% Co, 0.5-1.5% Cr, 4-8% Mo, 1-3% Ni, 0.3-1.5% C, 0.2-0.6% Ca and the balance Fe with impurities and having higher heat and creep resistances than the sintered alloy for the valve working face layer. In the sintered alloy for the valve head seat face layer, Co, Cr and Mo are disposed in the Fe matrix chiefly as a hard Co-Cr-Mo alloy and a hard Fe-Mo alloy. The two layers are united to one body by sintering, and copper is infiltrated into the body to obtain a material for a valve seat.

5. 发明专利

JPS6013051A MANUFACTURE OF SINTERED ALLOY MATERIAL FOR VALVE SEAT 失效
公开(公告)号：JPS6013051A
公开(公告)日：1985-01-23
申请号：JP12218683
申请日：1983-07-05
申请人： TOYOTA MOTOR CO LTD , SUMITOMO ELECTRIC INDUSTRIES
发明人： SUGANUMA TETSUYA , MANABE AKIRA , KUROISHI ATSUSHI , MOTOOKA NAOKI , KAMEDA RIYOUJI
IPC分类号： F01L3/02 , B22F3/10 , B22F3/24 , B22F7/02 , B22F7/06 , C22C33/02 , C22C38/10 , C22C38/22
摘要： PURPOSE:To obtain the titled material for a valve seat with heat resistance and high hardness by sintering a green compact consisting of an Fe-Cr powder layer and a hard powder layer contg. Co-Cr-Mo and Fe-Mo and by cooling the sintered body in two steps under specified conditions. CONSTITUTION:A green compact consisting of two layers is formed. The layers are a powder layer for a valve head face layer having a composition consisting of, by weight, 11-15% Cr, 0.4-2.0% Mo, 0.05-0.3% C and the balance Fe with impurities and a powder layer for a valve seat face layer having a composition consisting of, by weight, 4-8% Co, 0.5-1.5% Cr, 4-8% Mo, 1-3% Ni, 0.3- 1.0% C, 0.2-0.6% Ca and the balance Fe with impurities and contg. Co, Cr and Mo as a hard Co-Cr-Mo alloy and a hard Fe-Mo alloy. The green compact is sintered at 1,150-1,240 deg.C in a nonoxidizing atmosphere, and the sintered body is slowly cooled to 800-900 deg.C. It is further cooled at 20-50 deg.C/min cooling rate in the same atmosphere to obtain a sintered alloy material for a valve seat.

6. 发明专利

JPH0514024B2 失效
公开(公告)号：JPH0514024B2
公开(公告)日：1993-02-24
申请号：JP15699482
申请日：1982-09-08
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： ITO YOSHIAKI , TAKEDA YOSHINOBU , KUROISHI ATSUSHI
IPC分类号： C22C33/02 , C22C38/00 , H01F1/14

7. 发明专利

JPH0448858B2 失效
公开(公告)号：JPH0448858B2
公开(公告)日：1992-08-07
申请号：JP2514183
申请日：1983-02-16
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KUROISHI ATSUSHI , TAKEDA YOSHINOBU
IPC分类号： C22F1/043 , C22C1/04 , C22C21/00 , C22C21/02 , C22F1/00 , C22F1/04

8. 发明专利

JPH036211B2 失效
公开(公告)号：JPH036211B2
公开(公告)日：1991-01-29
申请号：JP11049781
申请日：1981-07-15
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： FUKUI AKIRA , AMANO YOSHINARI , OSADA MITSUO , KUROISHI ATSUSHI
IPC分类号： C22C5/06 , C22C19/00 , C22C29/00 , C22C29/06 , C22C29/08 , C22C29/10 , C22C32/00 , C22C38/00 , C22C38/52 , H01B1/02 , H01H1/02 , H01H1/023 , H01H11/04

9. 发明专利

JPS6342348A MANUFACTURE OF WEAR-RESISTING FERROUS SINTERED ALLOY 失效
公开(公告)号：JPS6342348A
公开(公告)日：1988-02-23
申请号：JP18451486
申请日：1986-08-06
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： FUJII MEGUMI , KUROISHI ATSUSHI
IPC分类号： C22C33/02 , C22C38/00
摘要： PURPOSE:To develop a ferrous sintered alloy for sliding material excellent in seizure resistance as well as in wear resistance and improved in sliding characteristics with opposite materials, by mixing a powdered Fe-Cr alloy, a carbon powder, a powder of CaF2, BaF2, etc., and the like with powdered Fe and then by subjecting the resulting powder mixture to compacting and sintering. CONSTITUTION:A powdered raw material having a composition in which 1.0-2.5%, by weight, of C powder for martensite formation and Cr2C3 formation, 0.3-5% CaF2 or BaF2 for improving sliding characteristics with opposite materials and also for reducing wear to be caused to opposite materials, and, for hard carbide formation, 0.5-3.0% Cr, 0.4-1.0% Mn, 0.1-0.4% Mo, or further 0.5-3.0% of at least one element among W, V, and Nb are added to the powder of Fe-Cr alloy consisting of 10-20% Cr and the balance Fe and which has the balance Fe is compacted, and the resulting green compact is sintered at 1,100-1,250 deg.C in vacuum or in an inert atmosphere. In this way, the Fe sintered alloy having superior sliding characteristics as vane material for rotary compressor pump can be obtained.

10. 发明专利

JPS631382B2 失效
公开(公告)号：JPS631382B2
公开(公告)日：1988-01-12
申请号：JP3507183
申请日：1983-03-03
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： OCHI SHIGEKI , KUROISHI ATSUSHI
IPC分类号： C22C5/06 , C22C32/00 , H01B1/02 , H01H1/023 , H01H1/0237 , H01H11/04

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