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公开(公告)号：EP3374622A1
公开(公告)日：2018-09-19
申请号：EP16797799.0
申请日：2016-11-09
发明人： VOIGT, Jens , SPERMANN, Johannes
CPC分类号： F02F3/003 , B21K1/185 , B23K20/129 , B23K2101/003 , F02F2003/0061
摘要： The invention relates to a piston of an internal combustion engine, consisting of an upper part (1) and a lower part (2), which are permanently joined in the region of a joining plane (3) by a friction welding method, wherein the piston has at least one peripheral annular groove (4), characterized in that the joining plane (3) is located between the upper flank and the lower flank of the annular groove (4) and in that a heat-affected zone (5) arising because of the use of the friction welding method includes at least the upper flank and/or the lower flank of the annular groove (4).
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公开(公告)号：EP2566655B1
公开(公告)日：2018-05-30
申请号：EP10744878.9
申请日：2010-08-04
发明人： REIN, Wolfgang, O.
摘要： A method of creating a piston crown is disclosed. The method includes the step of providing a billet and then upsetting the billet in a first station to generally decrease a length of the billet and generally increase a cross section of the billet. The billet is then pre-formed in a second station into an intermediate configuration of a piston crown, where the piston crown is in a preliminary shape. The first station and the second station are separate components. The intermediate configuration of the piston crown is formed into a final shape of the piston crown, where the final shape includes a predetermined volume. The piston crown is then precision formed into a near net shaped configuration, where the near net shaped configuration of the piston crown includes a near net shaped volume. The predetermined volume may be approximately equal to the near net shaped volume.
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公开(公告)号：EP2680989B1
公开(公告)日：2016-05-18
申请号：EP12712567.2
申请日：2012-03-02
CPC分类号： B23P15/10 , B21K1/185 , F02F3/003 , F02F3/0084 , F02F3/22 , F02F2003/0061 , F02F2200/04 , F02F2200/06 , F05C2201/0448 , F05C2253/24 , Y10T29/49249 , Y10T29/49252 , Y10T29/49254 , Y10T29/49256 , Y10T29/49261 , Y10T29/49265
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公开(公告)号：EP1680256A1
公开(公告)日：2006-07-19
申请号：EP04802662.9
申请日：2004-10-30
申请人： MAHLE GMBH
发明人： SCHARP, Rainer
CPC分类号： F02F3/22 , B21K1/185 , B23P15/10 , F02F3/003 , Y10T29/49249 , Y10T29/49252 , Y10T29/49256 , Y10T29/49258 , Y10T29/49265 , Y10T29/49266 , Y10T29/49274
摘要： The invention relates to a method for producing a piston (1) for an internal combustion engine. The inventive method is characterized by producing the base (4) from aluminum by a forging process, casting, by way of a composite casting process, a ring support (10) which is provided with a cooling channel (15) into an aluminum ring element (6), and then welding the ring element (6) with the base (4).
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公开(公告)号：EP1614885A2
公开(公告)日：2006-01-11
申请号：EP05254279.2
申请日：2005-07-07
申请人： Huang, Yuejun
发明人： Huang, Yuejun
IPC分类号： F02F3/22
CPC分类号： B21K1/18 , B21K1/185 , F02F3/22 , Y10T29/49249
摘要： A one-piece steel piston that is made from a piston blank that includes a portion that is configured and designed to be displaced to form a cooling gallery and ring belt. The piston blank can be formed by a casting or forging process. The portion that is designed and configured to be displaced is a flange that extends radially outward. The flange is bent downward or upward so that a peripheral edge of the flange contacts another portion of the piston. The peripheral edge of the flange and the other portion of the piston can be welded together or mechanically engaged.
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公开(公告)号：EP3288698A4
公开(公告)日：2018-07-11
申请号：EP16789876
申请日：2016-05-02
发明人： SHIVPURI RAJIV
CPC分类号： B21K1/185 , B23P15/10 , F02F3/18 , F02F3/22 , F02F2200/04
摘要： A piston, particularly a piston for use in a diesel engine, particularly a heavy duty diesel engine, is formed from a billet of metal, such that the finished piston has a mass that is at least 50%, and, more preferably, up to about 62%, of the mass of the billet. Other than finishing steps, the piston is formed with a closed gallery, without loss of mass through machining processes.
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公开(公告)号：EP3334545A1
公开(公告)日：2018-06-20
申请号：EP16753336.3
申请日：2016-08-11
发明人： LAQUA, Matthias
CPC分类号： F02F3/20 , B21K1/18 , B21K1/185 , B23P15/10 , F02F3/22 , F02F2003/0007 , F02F2200/04 , F16J1/001
摘要： The invention relates to a method for producing a cooling channel piston (9) for an internal combustion engine which cooling channel piston has a cooling channel (8) in the piston crown (2) of the cooling channel pistion, wherein the piston crown (2) connects a piston bottom part with piston bosses (4), bolt bores (12), and piston skirts (13), wherein a piston blank (1) having a circumferential collar (3) which protrudes radially in the region of the piston crown (2) is first produced and the collar (3) is then shaped. The method is characterized in that there is a contact region (5) on a top region of the piston skirts (13) and the collar (3) is shaped such that the outer circumferential edge thereof points at a distance to the contact region (5) and forms a defined gap (9), wherein the gap (9) is then sealed by a closure element (10) in order to form a closed cooling channel (8).
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公开(公告)号：EP1614885B1
公开(公告)日：2018-03-07
申请号：EP05254279.2
申请日：2005-07-07
发明人： Huang, Yuejun
IPC分类号： F02F3/22
CPC分类号： B21K1/18 , B21K1/185 , F02F3/22 , Y10T29/49249
摘要： A one-piece steel piston that is made from a piston blank that includes a portion that is configured and designed to be displaced to form a cooling gallery and ring belt. The piston blank can be formed by a casting or forging process. The portion that is designed and configured to be displaced is a flange that extends radially outward. The flange is bent downward or upward so that a peripheral edge of the flange contacts another portion of the piston. The peripheral edge of the flange and the other portion of the piston can be welded together or mechanically engaged.
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9.发明授权SCHMIEDEVORRICHTUNG ZUR HERSTELLUNG EINES KOLBENROHLINGS UND VERFAHREN ZUR HERSTELLUNG DES KOLBENROHLINGS UNTER VERWENDUNG DER SCHMIEDEVORRICHTUNG 有权锻造加工装置用于制造活塞坯件及其制造方法活塞坯件使用伪造DEVICE
公开(公告)号：EP2763805B1
公开(公告)日：2016-03-02
申请号：EP12791078.4
申请日：2012-10-05
CPC分类号： B21K1/18 , B21J5/025 , B21J13/02 , B21J13/025 , B21K1/185
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10.发明公开SCHMIEDEVORRICHTUNG ZUR HERSTELLUNG EINES KOLBENROHLINGS UND VERFAHREN ZUR HERSTELLUNG DES KOLBENROHLINGS UNTER VERWENDUNG DER SCHMIEDEVORRICHTUNG 有权锻造加工装置用于制造活塞坯件及其制造方法活塞坯件使用伪造DEVICE
公开(公告)号：EP2763805A1
公开(公告)日：2014-08-13
申请号：EP12791078.4
申请日：2012-10-05
CPC分类号： B21K1/18 , B21J5/025 , B21J13/02 , B21J13/025 , B21K1/185
摘要： Disclosed is a forging device (1) for producing a piston blank (28), comprising a forging mold (7, 10, 11) that has an essentially cylindrical cavity matching the radial outer surface of the piston blank (28), a forging base (8) delimiting the cavity, and a central die (14) consisting of a mandrel (21) that has a conically tapering extension (24) which is mounted on the mandrel and the shape of which matches the inner surface of the piston blank. In order to form the radially outer surfaces of the piston slipper walls (27, 27') and a peripheral cooling pocket (20) located radially outside the slipper walls (27, 27') in the piston head (29), the forging device (1) has two lateral jaws (10, 11) which are mounted in the forging device (1) so as to be movable at an angle to the longitudinal axis (3) of the forging device (1).
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