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公开(公告)号：EP2489755A4
公开(公告)日：2015-11-11
申请号：EP10823464
申请日：2010-10-15
申请人： SHOWA DENKO KK
发明人： OKAMOTO YASUO
IPC分类号： C22F1/05 , B21J5/00 , B21K1/18 , B22D11/00 , B22D11/20 , C22C21/02 , C22C21/06 , C22F1/043 , C22F1/047 , F16D65/14
CPC分类号： B21J5/00 , B21K1/18 , B22D11/003 , B22D21/007 , C21D9/0068 , C22C21/02 , C22C21/08 , C22F1/043 , C22F1/047 , C22F1/05 , F16D2125/06 , F16D2200/003
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公开(公告)号：EP2934786A1
公开(公告)日：2015-10-28
申请号：EP13801527.6
申请日：2013-12-03
IPC分类号： B21K1/18
摘要： The invention relates to a method for producing a cooling duct piston (1) for an internal combustion engine, said cooling duct piston (1) having a cooling duct (3) in its piston head (2), wherein the piston head (2) is adjoined by a piston bottom part (4) having piston bosses (5), pin bores (6) and piston skirts (7), wherein first of all a piston blank (1') having a circumferential collar (9) that protrudes radially in the region of the piston head (2) and having an abutment region (11) for the collar (9) in the transition region (10) between the piston head (2) and the piston bottom part (4) is produced, wherein the collar (9) is subsequently reshaped such that the outer radial circumferential edge (12) thereof comes virtually or completely into abutment with the abutment region (11). Provision is made according to the invention for at least a region of the piston blank (1') to be plastically deformed shortly before or after abutment, such that the collar (9) and the abutment region (11) are connected together so as to be detachable to a limited extent or non-detachable, with the result that a completely closed cooling duct (3) is formed. Furthermore, the invention relates to a cooling duct piston (1).
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公开(公告)号：EP2846946A1
公开(公告)日：2015-03-18
申请号：EP13722739.3
申请日：2013-05-08
CPC分类号： B23P15/10 , B21K1/185 , F02F3/22 , Y10T29/49249
摘要： Method for producing a piston (2) with a cooling duct for an internal combustion engine, comprising a cooling duct (5) in the piston head thereof, wherein a piston blank (1) is provided and a collar (K), protruding beyond the outer diameter of the later piston (2) with a cooling duct, is formed on the piston blank (1) by forging, spin-bending or the like and, to form the cooling duct (5), a radially peripheral recess (A) is introduced into the piston blank (1), characterized in that the radially peripheral recess (A) is introduced into the piston blank (1) by forging, spin-bending or the like and, in a further method step, a forming operation is performed on the collar (K), which together with the peripheral recess (A) forms a cooling duct.
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54.发明公开VERFAHREN ZUR HERSTELLUNG EINES KÜHLKANALKOLBENS FÜR BRENNKRAFTMASCHINEN UND DERART HERGESTELLTER KOLBEN 有权工艺生产用于内燃机的冷却通道活塞，从而生产活塞
公开(公告)号：EP2595771A1
公开(公告)日：2013-05-29
申请号：EP11743436.5
申请日：2011-07-18
发明人： GNIESMER, Volker
CPC分类号： B21K1/185 , B21K1/18 , B23P15/10 , F02F3/003 , F02F3/22 , F02F2003/0061 , F02F2200/00 , F02F2200/04 , Y10T29/49249 , Y10T29/49258
摘要： The invention relates to a method for producing a cooling channel system (1) for an internal combustion engine, which has a cooling channel (4) in the piston crown (2) thereof, the piston crown (2) being adjoined by a lower piston part having a piston boss, pin bores (6) and piston skirts (5), wherein, firstly, a piston blank having a peripheral collar projecting radially in the region of the piston crown (2) is produced, wherein the collar, forming a subsequent ring zone wall (7), is then reshaped and, in a transition area (12) between the piston crown (2) and the lower piston part, a contact area for the collar is formed, and the collar is reshaped in such a way until the outer radially peripheral edge thereof comes very close to or completely into contact with the contact area in order to form a closed cooling channel (4). The invention is characterized in that, following the reshaping, the end region of the ring zone wall (7) forms a defined gap (X) with respect to the upper edge of the piston skirt (5).
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公开(公告)号：EP2566655A1
公开(公告)日：2013-03-13
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：EP2489755A1
公开(公告)日：2012-08-22
申请号：EP10823464.2
申请日：2010-10-15
申请人： Showa Denko K.K.
发明人： OKAMOTO, Yasuo
CPC分类号： B21J5/00 , B21K1/18 , B22D11/003 , B22D21/007 , C21D9/0068 , C22C21/02 , C22C21/08 , C22F1/043 , C22F1/047 , C22F1/05 , F16D2125/06 , F16D2200/003
摘要： A brake piston having required mechanical strength is produced through fewer steps than in conventional processes. An aluminum alloy containing Si and Mg, wherein the aluminum alloy has a Si concentration (C Si mass%) and a Mg concentration (C Mg mass%) falling within a range surrounded by four points A (0.75, 1.25), B (1.4, 1), C (1.4, 0.6), and D (0.75, 0.85) in terms of a relationship thereof (C Si , C Mg ), and further has a Cu concentration of 0.07 to 0.9 mass%, a Mn concentration of 0.1 to 0.9 mass%, a Ti concentration of 0.005 to 0.15 mass%, a Cr concentration of 0.2 mass% or less, and a Fe concentration of 0.5 mass%, the balance being Al and inevitable impurities is cast to obtain a rod-shaped ingot. The rod-shaped ingot, without being subjected to a homogenization treatment, is straightened within 3 (three) days after the casting. The straightened rod-shaped ingot is cut into a given thickness to obtain a forging raw material. This forging raw material, without being subjected to annealing, is cold-forged at a reduction rate of 25 to 90% within 7 (seven) days after the casting of the rod-shaped ingot into a cup shape, which is subjected to age-hardening without being subjected to a solution heat treatment.
摘要翻译： 具有所需机械强度的制动活塞通过比常规方法更少的步骤产生。 含有Si和Mg的铝合金，其中铝合金具有Si浓度（C Si质量％）和Mg浓度（C Mg质量％）落在四点A（0.75,1.25），B（1.4 ，1），C（1.4,0.6）和D（0.75,0.85）的关系（C Si，C Mg），还有Cu浓度为0.07〜0.9质量％，Mn浓度为0.1 至0.9质量％，Ti浓度为0.005〜0.15质量％，Cr浓度为0.2质量％以下，Fe浓度为0.5质量％，余量为Al和不可避免的杂质，得到棒状铸锭 。 不经过均质处理的棒状锭在铸造后3（3）天内被拉直。 将矫直的棒状锭切割成给定的厚度以获得锻造原料。 在将棒状锭铸成杯状后7（7）天内，不进行退火的锻造原材料以25〜90％的压下率进行冷锻， 硬化而不进行固溶热处理。
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公开(公告)号：EP1973691A1
公开(公告)日：2008-10-01
申请号：EP06792433.2
申请日：2006-10-18
发明人： GNIESMER, Volker , RIES, Norbert
CPC分类号： B23K20/12 , B21K1/185 , B23K2201/003 , B23P15/10 , F02F3/003 , F02F3/22 , Y10T29/49256
摘要： The invention relates to a method for producing a piston (1), for an internal combustion engine, designed as a cooling duct piston for small compression heights. The piston (1) comprises a lower part (2) and an upper part (3) which are supported by means of one or more corresponding joining planes (10, 11, 12) and are connected by means of a friction welding process. The piston (1) encloses an inner, trough-shaped cooling duct (8) and an outer cooling duct (9) which is spaced apart axially from an annular area (4). The inner cooling duct (8) is formed in the lower part (2) of the piston (1) by a mechanical machining process, in particular a forging process. Transfer openings (22, 23) which are assigned to the cooling ducts (8, 9) are formed before the frictional welding of the joining planes (10, 11, 12).
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58.发明公开
公开(公告)号：EP1833627A1
公开(公告)日：2007-09-19
申请号：EP05819234.5
申请日：2005-12-05
CPC分类号： B21K1/18 , B21J5/063 , B21K1/185 , B21K21/12 , Y10T409/303808
摘要： The invention relates to a method for producing essentially rotationally symmetrical, undercut contours on workpieces (13) that can for example be produced by forging or casting, said workpieces having at least one sub-section (14) to be machined with an essentially symmetrical initial contour. The workpiece (13) is braced by the end that is not to be machined in a recess (11) and when in said recess (11) the sub-section (14) of the workpiece that is to be machined is placed against a tool (12). The tool (12) rotates with a constant or variable speed in relation to the sub-section (14) of the workpiece (13) that is to be machined. An undercut contour is thus produced on the sub-section (14) of the workpiece (13) by machining under an axial pressure.
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公开(公告)号：EP1288495B1
公开(公告)日：2006-05-31
申请号：EP02023312.8
申请日：2000-06-30
发明人： Beutler, Gerhard
CPC分类号： F04B1/124 , Y10T29/49252 , Y10T29/49256
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60.发明公开Herstellungsverfahren für einen Kühlkanalkolben mit umformbarem Bund 有权um Bund Bund Bund Bund Bund Bund Bund Bund Bund Bund Bund Bund Bund Bund
公开(公告)号：EP1452250A2
公开(公告)日：2004-09-01
申请号：EP04003227.8
申请日：2004-02-13
CPC分类号： F02F3/22 , B21K1/18 , B21K1/185 , F16J1/09 , Y10T29/49249
摘要： Verfahren zur Herstellung eines Kühlkanalkolbens, der einen Kühlkanal etwa im Bereich hinter einem Ringfeld aufweist, wobei ein Kolbenrohling zumindest teilweise in einem Schmiedeverfahren geformt wird, wobei erfindungsgemäß vorgesehen ist, dass ebenfalls im Schmiedeverfahren etwa im Bereich eines Feuersteges ein umlaufender Bund geformt, hinter dem Bund eine Ausnehmung eingebracht und anschließend der Bund mittels einer Umformung derart umgeformt wird, dass die Ausnehmung zur Bildung des Kühlkanales von dem Bund verschlossen wird.
摘要翻译： 冷却通道活塞的生产包括至少部分地在锻造过程中成形活塞坯料。 在锻造过程中产生至少一个外围套环和套环后面的凹部（6）。 然后将套环重新成形，使得凹槽由套环封闭以形成冷却通道。 优选特点：通过锻造，锻造，通过中空形状的滚动压力和滚动压力来重新形成轴环。
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