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公开(公告)号：JP3749809B2
公开(公告)日：2006-03-01
申请号：JP28509499
申请日：1999-10-06
申请人： 三菱ふそうトラック・バス株式会社 , 三菱マテリアル株式会社
CPC分类号： F05C2201/0448
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公开(公告)号：JP2005171382A
公开(公告)日：2005-06-30
申请号：JP2004332799
申请日：2004-11-17
申请人： Borgwarner Inc , ボーグワーナー・インコーポレーテッド
发明人： SUN RYAN , XU KAI , MATTHEWS DAN
IPC分类号： F02B39/00 , B22F3/00 , B22F3/02 , B22F3/12 , B22F3/16 , B22F3/23 , B22F5/02 , B22F5/10 , C22C33/02 , C22C38/00 , C22C38/34 , F02B37/24
CPC分类号： C22C33/0285 , B22F2998/00 , B22F2998/10 , B22F2999/00 , B22F5/02 , B22F3/02 , B22F3/10 , B22F3/1007 , B22F2201/013 , B22F2201/02 , B22F2201/20
摘要： PROBLEM TO BE SOLVED: To provide metal parts of a new composition having an excellent heat resistance and corrosion resistance. SOLUTION: The method of producing the parts from the powdered metal comprises (a) the step of providing a metallic powder containing iron, 0 to 0.6wt% carbon, 0.5 to 5.0wt% silicon, 0.5 to 6.0wt% nickel, 0.5 to 1.5wt% molybdenum, 0 to 0.7wt% manganese, and 12 to 20wt% chromium (the respective weight percentages calculated based on the total weight of the powder), (b) the step of obtaining a green compact by compressing the powders at a pressure of 35 to 65 tsi, and (c) the step of heating the compact to a temperature of 2,100 to 2,400°F for 20 to 90 minutes, such that the resulting microstructure of the compact is either dual phase ferritic and austenitic or single phase ferritic. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译： 待解决的问题：提供具有优异的耐热性和耐腐蚀性的新组合物的金属部件。 解决方案：从粉末金属制造零件的方法包括（a）提供含铁，0至0.6重量％的碳，0.5至5.0重量％的硅，0.5至6.0重量％的镍的金属粉末的步骤， 0.5〜1.5重量％的钼，0〜0.7重量％的锰和12〜20重量％的铬（相对于粉末的总重量计算的各自的重量百分比），（b）通过压缩粉末获得生坯的步骤 在35至65tsi的压力下，和（c）将压坯加热至2100至2400°F的温度20至90分钟的步骤，使得所得压坯的微观结构为双相铁素体和奥氏体或 单相铁素体。 版权所有（C）2005，JPO＆NCIPI
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3.发明专利
公开(公告)号：JP3551801B2
公开(公告)日：2004-08-11
申请号：JP36694298
申请日：1998-12-24
申请人： トヨタ自動車株式会社
CPC分类号： F02B23/104 , F02B2075/125 , F02F2001/245 , Y02T10/123 , Y02T10/125
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公开(公告)号：JPH11269619A
公开(公告)日：1999-10-05
申请号：JP7944698
申请日：1998-03-26
发明人： YO SEKIHIN
摘要： PROBLEM TO BE SOLVED: To provide a piston ring wear resistant ring made of free graphite- precipitated iron base sintering material excellent in high temp. wear resistance and thermal conductivity and small in mating attackability. SOLUTION: A piston ring wear resistant ring is composed of a free graphite- precipitated iron base sintering material having a compsn. contg., by weight, 0.5 to 5% Cr, 0.2 to 1% Mn, 0.05 to 1% S, 0.05 to 1% B, 0.5 to 5% C, 1 to 12% Ni, 0.5 to 5% Ti and 8.5 to 20% Cu, further contg., at need, 0.1 to 2% Mo, and the balance Fe with inevitable impurities and moreover having a structure in which the base is consisting essentially of austenitic phases and precipitately grown free graphite is present in pores.
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公开(公告)号：JPH11190253A
公开(公告)日：1999-07-13
申请号：JP35697297
申请日：1997-12-25
申请人： AISIN SEIKI
发明人： SAWADA TOMOHIRO , HARA SOUICHI , KAWABATA YASUHIRO
IPC分类号： F02F3/00 , B22D19/08 , B22F5/02 , B22F7/06 , F01P3/10 , F02B3/06 , F02F3/18 , F16J1/09 , F16J9/00 , F16J9/26
摘要： PROBLEM TO BE SOLVED: To reduce machining mandays, to reduce heat capacity and to improve a cooling property by forming an wear resistant ring for a piston having a piston ring groove on the outer peripheral side and a cooling cavity part on the inner peripheral side by sintering and bonding plural number of members with each other and installing it on the piston in such a way to insertingly cast. SOLUTION: A piston 10 for a diesel engine is constituted by forming a top ring groove 12 on a peripheral surface of a top surface part 11, a second ring groove 13 and an oil ring groove 14, and an wear resistant ring 20 to improve abrasion resistance is provided in the top ring groove 13 in such a way as to insertingly cast. This wear resistant ring 20 is formed by sintering and bonding a first member 40 and a second member 50 divided in two with each other, and at this time, simultaneously, the piston ring groove 12 is formed on the outer peripheral side and a cooling cavity part 30 is formed on the inner peripheral side. The first member 40 is formed so as to have a cross-section U shaped circumferential groove part, and the second member 50 is formed so as to have an extended part in order to close the U shaped groove part of the first member 40.
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公开(公告)号：JPH0813003A
公开(公告)日：1996-01-16
申请号：JP14355394
申请日：1994-06-24
申请人： KUBOTA KK
发明人： ISAKI HIROSHI , AOKI TOSHIYUKI , YOSHINO MASANORI
摘要： PURPOSE:To provide a method for hot-compacting metal powder by which seizing is hardly caused on the compacting face of a metal mold even at a part at which high plastic fluidization is carried out. CONSTITUTION:Compacting stock 10 is put in a metal mold for compacting, a compacting die for forming the outside or inside of a compact is pressed on the stock 10 and the stock 10 is brought into plastic fluidization and hot- compacted into a specific shape. The stock 10 is obtd. by coating the periphery of a green compact 11 of metal powder with a metallic film 12 for lubrication excellent in ductility. The metallic film 12 is preferably formed by plating or thermal spraying.
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公开(公告)号：JPH04311506A
公开(公告)日：1992-11-04
申请号：JP10320291
申请日：1991-04-08
申请人： HITACHI METALS LTD
发明人： FUKUSHIMA KATSUAKI , OKUNO TOSHIO
摘要： PURPOSE:To render superior corrosion, wear and seizing resistances in a severe atmosphere of combustion gas to a wire rod for a piston ring used in a general- purpose internal-combustion engine for an automobile, a ship, etc. CONSTITUTION:This wire rod for a piston ring consists of, by weight, >0.80-2.30% C,
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公开(公告)号：JPH03189477A
公开(公告)日：1991-08-19
申请号：JP19473690
申请日：1990-07-25
发明人： KAWANAMI SHIZUO , KAMITO YOSHIMI , KISHIKAWA RYOJI
摘要： PURPOSE:To obtain a piston ring with high abrasion resistance, excellent sliding performance and generally prolonged life by sintering powder such as carbide into grooves provided on the sliding surface of a piston ring and simultaneously bonding it to piston ring body material to form the sliding surface. CONSTITUTION:Plural grooves 5 narrower than the width of the piston ring sliding surface and deeper than 2mm are provided, and powder such as carbide is sintered into the grooves 5 and simultaneously bonded to piston ring body material 1 to form a sliding surface. The sliding surface is thus formed of high hardness abrasion resistant material, and if highly flexible general iron or steel is used as the piston ring body material 1, two-layer structure is obtained to prevent an accident caused by the breaking of a piston ring and also the piston ring four to five times more durable than the conventional rings can be obtained.
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公开(公告)号：JPS60110801A
公开(公告)日：1985-06-17
申请号：JP21780583
申请日：1983-11-21
发明人： URANO SHIGERU
摘要： PURPOSE:To form exactly a valve seat having inclined grooves by packing sintered powder into the cavity formed of a lower core provided with inclined projecting parts on the side face, a die and a lower punch and compressing the sintered powder by rotating and lowering the upper punch provided with the inclined grooves. CONSTITUTION:A cavity is formed of a lower core 100 formed with plural inclined projecting parts 102 on an outside circumferential surface 101, a lower punch 103 and a die 104 and sintered powder 109 is packed therein. An upper punch 106 formed with plural inclined grooves 108 on the inside circumferential surface is lowered under pressure while the punch is rotated in a way as to avoid contact of the grooves 108 and the parts 102 to mold compressively the powder 109 thereby forming an intake valve seat 2. The punch 106 is then rotated backward and is moved upward to be detached from the die and thereafter the lower core 100 and the punch 103 are simultaneously moved upward to expose the seat 2 from the die 104. The core 100 is lowered and the seat 2 is taken out.
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公开(公告)号：JPS56116802A
公开(公告)日：1981-09-12
申请号：JP1975180
申请日：1980-02-21
申请人： RIKEN KK
发明人： MIYANO MASAHARU , MOTOI CHIYOJI
摘要： PURPOSE:To provide a piston ring having a high dimensional accuracy by a method wherein a lower punch is provided with a protruded part and an upper punch with depression, both at the positions corresponding to the free mating mouth parts of a piston ring; and both the punches, core and die are used together to compress and form a metal powder further apply recompression after sintering, the titled piston ring is obtained. CONSTITUTION:A protrusion 31 is provided to a lower punch 3 at the position corresponding to the free mating mouth of a piston ring; in the same way, a depression 41 is provided to an upper punch 4. A die 1, core 2, the upper punch 4 and lower punch 3 are used to compress and form a metal powder 5, thereby providing a pressed powder element 6. The obtained pressed-powder element 6 is sintered to reduce strain occurrence, then is subjected to barrel polishing to remove burrs. Then, to provide a desired piston ring, the upper and lower punches are used to recompress the sintered element 6 in a die having the inner surface dimensions and shape equal to the outer surface dimension and shape of the piston ring.
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