MAGNESIUM-ALLOY MEMBER, COMPRESSOR FOR USE IN AIR CONDITIONER, AND METHOD FOR MANUFACTURING MAGNESIUM-ALLOY MEMBER
    151.
    发明公开
    MAGNESIUM-ALLOY MEMBER, COMPRESSOR FOR USE IN AIR CONDITIONER, AND METHOD FOR MANUFACTURING MAGNESIUM-ALLOY MEMBER 审中-公开
    镁合金元素,空调压缩机和工艺生产镁合金元素

    公开(公告)号:EP2631312A1

    公开(公告)日:2013-08-28

    申请号:EP11836462.9

    申请日:2011-10-28

    Abstract: The present invention provides a magnesium alloy member and a method for manufacturing a magnesium alloy member capable of achieving a mechanical strength and a high-temperature fatigue strength sufficient to apply them to mechanical parts of a compressor for automotive air conditioners. The invention also provides a compressor for air conditioners using, as a mechanical part thereof, a magnesium alloy equipped with a necessary mechanical strength and high-temperature fatigue strength. More specifically, a magnesium alloy member is formed by subjecting a cast material of a magnesium alloy containing, on the basis of mass%, from 0.3% to 10% calcium (Ca), from 0.2% to 15% aluminum (Al), and from 0.05% to 1.5% manganese (Mn), and containing calcium (Ca) and aluminum (Al) at a calcium/aluminum mass ratio of from 0.6 to 1.7, with the balance being magnesium (Mg) and inevitable impurities to plastic working (extrusion processing) at from 250°C to 500°C. This makes it possible to obtain a magnesium alloy member having a room-temperature 0.2% proof stress of 300 MPa or more and a 150°C fatigue strength of 100 MPa or greater. The magnesium alloy member used for the formation of mechanical parts of a compressor for automotive air conditioners contributes to a reduction in the weight of the compressor.

    Abstract translation: 本发明提供一种镁合金构件及其制造能够实现机械强度和高温疲劳强度的充分将它们应用到用于汽车空调压缩机的机械部件的镁合金构件的方法。 因此本发明提供了使用空调机的压缩机,作为其机械部件,搭载了必要的机械强度和高温疲劳强度的镁合金。 更具体地说,镁合金构件是通过使含有镁合金的铸造材料,以质量%的基础上,从0.3%至10%的钙(Ca),从0.2%至15%的铝(Al)形成,并且 从0.05%至1.5%的锰(Mn),以及含有钙(Ca)和铝(Al)在0.6至1.7的钙/铝的质量比,余量为镁(Mg)和不可避免的杂质塑性加工( 挤压加工)在从250℃至500℃ 这使得有可能得到具有300MPa以上的室温0.2%屈服应力和为100MPa或更高的150℃疲劳强度的镁合金构件。 用于汽车空调压缩机的机械部件形成的镁合金构件有助于压缩机的轻量化。

    SCHMIERMITTELPUMPE, REGELKOLBEN
    152.
    发明公开
    SCHMIERMITTELPUMPE, REGELKOLBEN 审中-公开
    SCHMIERMITTELZAHNRADPUMPE MIT REGELKOLBEN

    公开(公告)号:EP2569540A2

    公开(公告)日:2013-03-20

    申请号:EP11722000.4

    申请日:2011-05-11

    Applicant: Audi AG

    Inventor: ERNST, Jürgen

    Abstract: The invention relates to a lubricant pump (1), in particular for an internal combustion engine of a motor vehicle, comprising a housing (3) in which at least one pair (4) of intermeshing gear wheels (5) is disposed for delivering lubricant, wherein a first of the gear wheels is rotatably mounted on a drive shaft and the second of the gear wheels (5) is rotatably mounted on an axially displaceable displacement unit (6) for adjusting a variable volume to be delivered, and further comprising a control piston (16) which can be moved axially in a receptacle (15) of the housing (3) for hydraulically adjusting the position of the displacement unit (6), wherein the control piston (16) has a central longitudinal axis (17) and cylinder rings (18-21) enclosing control edges (18', 18"; 19', 19") for exposing or closing control channels (12, 13) opening into the receptacle (15). To this end, the control piston (16) is designed as a composite component (31), wherein the cylinder rings (18-21) are produced from a material which reduces friction and/or wear with respect to the receptacle (15), and the central longitudinal axis (17) is produced at least in some sections from a material which has a coefficient of thermal expansion that corresponds at least substantially to that of the receptacle (15). The invention further relates to a control piston for a lubricant pump.

    Abstract translation: 润滑剂泵包括壳体,其中布置有至少一对相互啮合的齿轮用于输送润滑剂。 一个齿轮可旋转地支撑在驱动轴上,另一个齿轮可旋转地支撑在轴向移动位移单元上,用于调节可变流量。 在壳体容座中可轴向移动的是用于液压地调节位移单元的位置的控制活塞。 控制活塞被构造为复合结构部件,并且具有中央纵向轴和气缸环,其包括用于清除或关闭进入容器的控制通道的控制边缘。 气缸环由相对于容器减小摩擦和/或磨损的材料制成,并且中心纵向轴具有至少一个部分,该部分由具有至少基本对应于 容器。

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