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1. 发明专利

JP2008238258A Iron-based member for light-metal alloy insert 有权
标题翻译：用于轻金属合金插件的基于铁的会员
公开(公告)号：JP2008238258A
公开(公告)日：2008-10-09
申请号：JP2007086690
申请日：2007-03-29
申请人： Nippon Piston Ring Co Ltd , 日本ピストンリング株式会社
发明人： SENDA NORIAKI , TAKIGUCHI HIROSHI
IPC分类号： B22D19/00 , B22F3/24 , C21D7/06
摘要： PROBLEM TO BE SOLVED: To provide an iron-based member excellent in inserting onto a light-metal alloy with which in the case of inserting the iron-based member onto the light-metal alloy, the generation of cracking can be prevented.
SOLUTION: In the iron-based member used by inserting onto the light-metal alloy such as aluminum alloy, on the mutually faced two surfaces in the iron-based member, desirably, the flat surface shape is shown as circular state having diameter A (mm), 0.05-2.0 mm depth B and 0.005-1 B/A. The light-metal alloy has the plurality of recessed parts for inserting the iron-based members and distance C between the centers of the adjoined recessed parts and this C is A
摘要翻译：要解决的问题：为了提供一种在将铁基构件插入轻金属合金的情况下插入到轻金属合金上的铁基材料，可以防止产生裂纹。解决方案：在铁基部件中相互面对的两个表面上插入铝合金等轻金属合金所使用的铁基部件中，优选平面形状为圆形状，直径A（mm），0.05-2.0mm深度B和0.005-1B / A。轻金属合金具有用于将铁基构件插入的多个凹部和邻接的凹部的中心之间的距离C，C为A

2. 发明专利

JP2005048263A Ferrous sintered compact for valve seat having excellent casting-in property for light metal alloy 有权
标题翻译：用于轻金属合金的优质铸造阀门阀门的强化烧结
公开(公告)号：JP2005048263A
公开(公告)日：2005-02-24
申请号：JP2003283731
申请日：2003-07-31
申请人： Nippon Piston Ring Co Ltd , 日本ピストンリング株式会社
发明人： OSHIGE MASAYUKI , TAKAHASHI TERUO , TAKIGUCHI HIROSHI
IPC分类号： F01L3/02 , B22D19/00 , B22F5/00 , C22C33/02 , C22C38/00 , C22C38/16 , C22C38/56
摘要： PROBLEM TO BE SOLVED: To provide a ferrous sintered compact for a valve seal having excellent casting-in properties for a light metal alloy such as an aluminum alloy.
SOLUTION: The sintered compact has a composition comprising 5 to 40% Cu and, preferably, comprising 0.1 to 2.0% C, has vacancies, preferably, of 5 to 50% by volume, and has a structure in which a free Cu phase is dispersed into a matrix. Further, the sintered compact may comprise one or more kinds of metals selected from Ni, Co, Cr, Mo, W, Si and V by ≤50% in total. Thus, its casting-in properties for a light metal alloy remarkably improves, a valve seat can be mounted on a cylinder head in a state of being cast-in, and the joining strength between the valve seat and the cylinder head increases.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决方案：提供一种用于诸如铝合金的轻金属合金具有优异的浇铸性能的用于阀密封的铁类烧结体。解决方案：烧结体具有包含5〜40％的Cu，优选含有0.1〜2.0％的C，具有空位，优选为5〜50体积％的组成，其结构为：游离Cu 相分散成矩阵。此外，烧结体可以包含选自Ni，Co，Cr，Mo，W，Si和V中的一种或多种金属，总共≤50％。因此，其轻金属合金的铸造性能显着提高，阀座可以在铸造的状态下安装在气缸盖上，并且阀座与气缸盖之间的接合强度增加。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2004149819A Ferrous sintered body for valve seat 审中-公开
公开(公告)号：JP2004149819A
公开(公告)日：2004-05-27
申请号：JP2002313665
申请日：2002-10-29
申请人： Nippon Piston Ring Co Ltd , 日本ピストンリング株式会社
发明人： OSHIGE MASAYUKI , TAKAHASHI TERUO , TAKIGUCHI HIROSHI
IPC分类号： F01L3/02 , B22F3/11 , B22F5/00 , B22F5/10 , C22C33/02 , C22C38/00 , C22C38/56
摘要： PROBLEM TO BE SOLVED: To provide a ferrous sintered body for a valve seat excellent in properties of jointing with a light metal alloy (e.g. an aluminum alloy).
SOLUTION: A ferrous powder with a particle size distribution of from -60 mesh to +350 mesh is mixed with a graphite powder and if necessary further with an alloy element powder and a lubricant powder. The resultant mixture is charged into a metal mold and press molded to give a green compact, which is sintered to give a ferrous sintered body. In this ferrous sintered body, the pore content is 5-50 vol.%; the diameters of at least 80% of all the pores are larger than 5 μm; 0.1-2.0 mass% carbon is contained; and preferably at most 50 mass% at least one element selected from among Ni, Co, Cr, Mo, W, Si, and V is contained. Thus, a valve seat made of the sintered body exhibits a remarkably increased jointing strength between itself and a cylinder head made of a light metal alloy and is prevented from falling off during engine operation.
COPYRIGHT: (C)2004,JPO

4. 发明专利

JP2001329305A FRICTION-RESISTANT RING FORMED OF POROUS METAL SINTERING BODY 失效
公开(公告)号：JP2001329305A
公开(公告)日：2001-11-27
申请号：JP2001055320
申请日：2001-02-28
申请人： NIPPON PISTON RING CO LTD
发明人： TAKIGUCHI HIROSHI
IPC分类号： F02F3/00 , B22F5/02 , B22F5/10 , B22F7/06 , B22F7/08 , F02F3/22 , F16J1/01
摘要： PROBLEM TO BE SOLVED: To provide a friction-resistant ring formed of a porous metal sintering body cast in a groove of a piston ring of a piston for an engine which can reduce the manufacturing cost with the excellent accuracy. SOLUTION: The friction-resistant ring (1) having a cooling cavity is diffusion-welded by sintering two green compacts (5 and 6) entirely split in upper and lower portions in the cooling cavity (3) and the ring groove (4). In order to prevent the deviation of the green compacts (5 and 6) during the sintering, a steel tube ring (9) is internally fitted to recesses (7 and 8) forming the cooling cavity (3).

5. 发明专利

JP2000274451A FE-BASED SINTERED ALLOY SYNCHRONIZER RING 失效
公开(公告)号：JP2000274451A
公开(公告)日：2000-10-03
申请号：JP7958699
申请日：1999-03-24
申请人： NIPPON PISTON RING CO LTD
发明人： TAKIGUCHI HIROSHI , OMIYA TAKAO
IPC分类号： F16D23/06 , B22F5/00 , B22F7/00 , B22F7/06 , C22C38/00
摘要： PROBLEM TO BE SOLVED: To improve a friction characteristic and seizure resistance by applying a thermosetting resin (an expoxy resin) blended with walnut shell powder as a friction material to an Fe group sintered alloy material treated with steam, hardening/joining the thermosetting resin by performing heating/pressurizing processing, and forming a layer composed of the friction material on a surface. SOLUTION: A synchronizer ring 4 is manufactured from an Fe-based alloy sintered body by sintering green compact at a about 1000 to 1200 deg.C after being formed as the green compact by pressurizing alloy element powder in a metal mold by blending/mixing the alloy element powder such as graphite powder or Cu powder when necessary by prescribed blending quantity with iron powder or low alloy steel powder. A layer 45 composed of a friction material is formed on a vertical groove 44 for cutting lubricating oil of such a product and a tapering inner peripheral surface 40 having a ring-shaped strip groove 42 orthogonal to this vertical groove. This layer 45 is formed of the friction material by blending walnut shell powder with a thermosetting resin such as an epoxy resin to thereby increase a coefficient of dynamic friction of an inner peripheral surface to improve a friction characteristic and seizure resistance.

6. 发明专利

JP2000130465A SYNCHRONIZER RING 失效
公开(公告)号：JP2000130465A
公开(公告)日：2000-05-12
申请号：JP30925398
申请日：1998-10-29
申请人： NIPPON PISTON RING CO LTD
发明人： TAKIGUCHI HIROSHI , INAO KYOKO , OMIYA TAKAO
IPC分类号： F16D23/06 , B22F3/24 , C23C8/26 , F16D23/02
摘要： PROBLEM TO BE SOLVED: To prevent scuffing at the time of high speed medium load low inertia and high speed low load high inertia by making this synchronizer ring of Fe system sintered alloy and applying nitriding in addition to blast treatment and steam treatment at least on its inner peripheral surface. SOLUTION: An Fe system alloy sintered body is manufactured by blending and mixing specified quantity of graphite powder in iron powder or low alloy steel powder and sintering it at 1,000-1,200 deg.C after making it into a green compact in a metal mold. Thereafter, surface roughness is made 30-70 μmRz by applying blast treatment on an inner peripheral surface of a synchronizer ring made of the sintered body worked in a specified shape, an iron oxide film is formed by steam treatment, formation of nitride in the inside of sintered alloy is prevented by sealing holes of the sintered alloy, and impact resistance is maintained. Furthermore, a nitrided layer is formed by nitriding treatment, and its hardness is made Hv 400-700. Consequently, an oil film formed on a contact surface with an objective member on the inner peripheral surface becomes thinner, a boundary lubricating state is maintained, and scuffing can be prevented even at the time of sliding of high speed medium load low inertia and high speed low load high inertia.

7. 发明专利

JP2004204298A Iron-base sintered compact superior in cast-in property by light metal alloy, and manufacturing method therefor 有权
公开(公告)号：JP2004204298A
公开(公告)日：2004-07-22
申请号：JP2002374650
申请日：2002-12-25
申请人： Fuji Heavy Ind Ltd , Nippon Piston Ring Co Ltd , 富士重工業株式会社 , 日本ピストンリング株式会社
发明人： ODA TERUYUKI , TAKIGUCHI HIROSHI
IPC分类号： F02F1/00 , B22D19/00 , B22F3/11 , B22F3/24 , B22F7/08 , B32B15/01 , C22C33/02 , C22C38/00 , C22C38/10 , C22C38/12 , C22C38/16 , C22C38/58 , C23C8/18
CPC分类号： C22C33/0278 , B22F3/24 , B22F7/08 , B22F2003/166 , B22F2003/245 , B32B15/012 , C22C33/0207 , C22C38/10 , C22C38/12 , F05C2251/042
摘要： PROBLEM TO BE SOLVED: To provide an iron-base sintered compact superior in a cast-in property by a light metal alloy, and to provide a manufacturing method therefor.
SOLUTION: This manufacturing method comprises mixing an iron-base powder, and a copper powder which is blended so as to make a Cu content in a mixed powder to be 5 to 40 mass%, a graphite powder which is blended so as to make a C content in the mixed powder to be 0.5 to 2.5 mass%, and a lubricant powder, or further a fine particle powder for improving machinability, to prepare the mixed powder; then charging the mixed powder into a die; press-forming it so as to have a desired mean heat expansion coefficient as in sintered state; sintering it into a sintered compact; and further subjecting the sintered compact to shot blasting or further steam treatment to adjust the surface roughness Rz into 10 to 100 μm. Thereby, adhesiveness and bonding strength of the sintered compact increases when cast-in by the light metal alloy, and the cast-in properties are improved. In the above step, in lieu of a pure iron powder, a martensitic stainless steel powder, a ferritic stainless steel powder, or a Cr, Mo or W powder may be further blended.
COPYRIGHT: (C)2004,JPO&NCIPI

8. 发明专利

JP2003014120A Wear-resistant ring and manufacturing method therefor 审中-公开
标题翻译：耐磨环及其制造方法
公开(公告)号：JP2003014120A
公开(公告)日：2003-01-15
申请号：JP2001197605
申请日：2001-06-29
申请人： Nippon Piston Ring Co Ltd , 日本ピストンリング株式会社
发明人： TAKIGUCHI HIROSHI
IPC分类号： F02F3/00 , B22F5/00 , B22F5/10 , B22F7/08 , C22C1/05 , C22C38/00 , C22C38/58 , F16J1/00 , F16J1/01 , F16J1/08 , F16J9/00
摘要： PROBLEM TO BE SOLVED: To provide a wear-resistant ring and a manufacturing method therefor with excellent machining property of a ring groove.
SOLUTION: A pair of green compacts in a shape of stepped ring made of mixture of metallic powder with graphite powder. A ring-like easy-to-work material worked in a dimension and shape approximately corresponding to a piston ring groove is sandwiched between parts corresponding to the piston ring grooves of the pair of the green compacts, and they are sintered to be integrated. Preferably, the easy-to-work material is preferably a sintered body having a composition in which 0.1-3% of a kind or a plurality kinds of machining property improving particles selected from MnS, CaF
2 , BN, and enstatite, 0.8-1.1% of C, and 0-4% of Cu are contained with the remaining substantially Fe, and having pearlitic structure as matrix structure. The easy-to-work material may be a solvent-soluble heat resistant material. Preferably, the metallic powder is preferably austenitic stainless steel powder.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供具有优异的环槽加工性能的耐磨环及其制造方法。解决方案：一对由金属粉末与石墨粉末的混合物制成的阶梯环形的压坯。大致对应于活塞环槽的尺寸和形状的环状易加工材料被夹在对应于一对生坯的活塞环槽的部件之间，并且它们被烧结以一体化。优选地，易于加工的材料优选为具有以下组成的烧结体，其中，选自MnS，CaF 2，BN和顽辉石中的0.1-3％的一种或多种机械性能改进颗粒，0.8-1.1％的C和0-4％的Cu含有剩余的基本上为Fe，并且具有珠光体结构作为基体结构。易于使用的材料可以是溶剂可溶的耐热材料。优选地，金属粉末优选为奥氏体不锈钢粉末。

9. 发明专利

JP2002356753A POROUS METALLIC SINTERED COMPACT FOR WEAR RESISTANT MEMBER, AND WEAR RESISTANT RING 审中-公开
公开(公告)号：JP2002356753A
公开(公告)日：2002-12-13
申请号：JP2001268571
申请日：2001-09-05
申请人： NIPPON PISTON RING CO LTD
发明人： TAKIGUCHI HIROSHI , SUWA KIYOSHI , TAKAHASHI TERUO
IPC分类号： F02F3/00 , B22F5/02 , C22C33/02 , C22C38/00 , C22C38/58 , F16J1/01 , F16J9/26
摘要： PROBLEM TO BE SOLVED: To provide a wear resistant ring (porous metallic sintered compact) which has desired boundary strength when subjected to casting in a piston and has excellent joinability to a piston material (aluminum alloy). SOLUTION: Austenitic stainless steel powder having a particle-size distribution capable of passing through a sieve of 60 mesh and incapable of passing through a sieve of 350 mesh is used to prepare the porous sintered compact of austenitic stainless steel which has 20-50% pores by area ratio and in which pores of >5 μm diameter among the pores comprise >=80% of the total pore area by area ratio. Machinability-improving fine particles composed of one or more kinds selected from MnS, CaF, BN and enstatite can be incorporated in an amount of 0.1-5% by mass. This sintered compact is subjected to casting in a piston.

10. 发明专利

JP2002295675A ABRASION-RESISTANT RING 失效
公开(公告)号：JP2002295675A
公开(公告)日：2002-10-09
申请号：JP2001092138
申请日：2001-03-28
申请人： NIPPON PISTON RING CO LTD
发明人： TAKIGUCHI HIROSHI
IPC分类号： F02F3/00 , F16J1/02
摘要： PROBLEM TO BE SOLVED: To provide an abrasion-resistant ring capable of stably ensuring a desired border strength, when cast into a piston, and having a jointing property to a piston material (aluminum alloy). SOLUTION: The abrasion-resistant ring is cast into the piston, such that a thermal expansion coefficient α (20-40 deg.C) of porous metal sintered body is adjusted to satisfy relational equation with the characteristic value of the surface roughness of the abrasion-resistant ring: α>=[-4.4×A+19.8]×10 (wherein A: Rvk ×(100-Mr2 )}/100, Rvk : depth of oil reservoir (depth of groove part out of effective load roughness Rk ) (μm), Mr2 : a load length ratio 2 (load length ratio, corresponding to the lower limit value of effective load roughness Rk ) (%)). Thereby, the border strength is stabilized and can be made to a desired strength or larger.

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