MAGNETIC ARC WELDED PISTON ASSEMBLY
    26.
    发明公开
    MAGNETIC ARC WELDED PISTON ASSEMBLY 有权
    磁LICHTBOGENGESCHWEISSTE活塞结构

    公开(公告)号:EP2940282A1

    公开(公告)日:2015-11-04

    申请号:EP15165305.2

    申请日:2015-04-28

    Abstract: Exemplary pistons and methods of making the same are disclosed. An exemplary method generally includes providing a piston lower part defining a piston axis and at least a portion of the upper combustion bowl surface, and assembling a piston upper part to the piston lower part. The piston upper and lower parts cooperate to define at least in part an annular cooling gallery extending about the piston. The method may further include bringing the piston upper and lower parts together along respective upper and lower mating surfaces and inducing an electric current between the upper and lower mating surfaces while the upper and lower mating surfaces are in contact.

    THERMISCHES BESCHICHTUNGSVERFAHREN
    29.
    发明公开

    公开(公告)号:EP2616567A1

    公开(公告)日:2013-07-24

    申请号:EP11741124.9

    申请日:2011-08-05

    Abstract: The invention relates to a thermal coating method for applying a functional layer onto a workpiece surface, in particular a thermal coating method for applying a running surface coating onto a cylinder running surface of an internal combustion engine crankcase, said method having the following steps: melting coating material by means of a melting device, and applying coating material droplets onto the workpiece surface by means of a gas jet that is aimed at the workpiece surface, said gas jet blowing coating material droplets from a melting location of the melting device onto the workpiece surface. The coating material droplets are cooled or shock-frozen during the transportation of said droplets from the melting location to the workpiece surface.

    Abstract translation: 一种将功能层施加到工件表面的热涂覆方法,特别是用于将行驶表面涂层施加到内燃机的曲轴箱的气缸运行表面上的包括以下步骤:使用熔化来熔化涂层材料 装置,通过使用针对工件表面的气体射流将涂料液滴施加到工件表面,该气体喷射将熔融装置的熔化位置的材料液滴喷射到工件表面上,以及冷却或快速冷冻涂层材料 它们在从熔化位置运输到工件表面时产生液滴。

    KOLBEN FÜR EINEN VERBRENNUNGSMOTOR UND VERFAHREN ZU SEINER HERSTELLUNG
    30.
    发明公开
    KOLBEN FÜR EINEN VERBRENNUNGSMOTOR UND VERFAHREN ZU SEINER HERSTELLUNG 有权
    KOLBENFÜREINEN VERBRENNUNGSMOTOR UND VERFAHREN ZU SEINER HERSTELLUNG

    公开(公告)号:EP2603685A1

    公开(公告)日:2013-06-19

    申请号:EP11787582.3

    申请日:2011-08-09

    Abstract: The invention relates to a method for producing a piston (10, 110, 210) for an internal combustion engine from a first piston component (11, 111, 211) and a second piston component (12, 112, 212), characterized by the following method steps: (a) providing a blank (211') of the first piston component (11, 111, 211) made of a heat-treatable steel or a precipitation-hardening steel and having at least one joining surface (29, 31), (b) providing a blank (212') of the second piston component (12, 112, 212) made of a heat-treatable steel or a precipitation-hardening steel and having at least one joining surface (32, 33), (c) heat-treating the blanks (211', 212'), (d) connecting the blank (211') of the first piston component (11, 111, 211) to the blank (212') of the second piston component (12, 112, 212) by means of the joining surfaces (29, 31, 32, 33) thereof using friction welding in order to form a piston blank (210'), at least one friction weld (25, 26, 125, 226) and a heat-affected zone (30, 30') in the region of the at least one friction weld (25, 26, 125, 226) being formed in the process, (e) tempering or stress-relief annealing the piston blank (210) while preserving the heat-affected zone(s) (30, 30'), and (f) post-processing and/or finishing the piston blank (210') to form a piston (10, 110, 210). The invention further relates to such a piston (10, 110, 210).

    Abstract translation: 本发明涉及一种由第一活塞部件(11,111,211)和第二活塞部件(12,112,212)制造用于内燃机的活塞(10,110,210)的方法,其特征在于, (a)提供由可热处理钢或沉淀硬化钢制成并且具有至少一个连接表面(29,31)的第一活塞部件(11,111,211)的坯件(211'), ),(b)提供由可热处理钢或沉淀硬化钢制成并具有至少一个连接表面(32,33)的第二活塞部件(12,112,212)的坯件(212'), (c)对坯件(211',212')进行热处理,(d)将第一活塞部件(11,111,211)的坯件(211')连接到第二活塞部件 借助于摩擦焊接借助于其接合表面(29,31,32,33)形成活塞坯件(210'),至少一个摩擦焊接(25,26,125, 226)和热影响区 (30,30')在所述至少一个摩擦焊接(25,26,125,226)的区域中形成,(e)在保持所述热量的同时对所述活塞坯件(210)进行回火或去应力退火 (30,30'),和(f)后处理和/或精加工活塞毛坯(210')以形成活塞(10,110,210)。 本发明还涉及这种活塞(10,110,210)。

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