LUBRICATION OF MAGNESIUM WORKPIECES FOR HOT FORMING
    73.
    发明申请
    LUBRICATION OF MAGNESIUM WORKPIECES FOR HOT FORMING 审中-公开
    用于热成型的镁工件的润滑

    公开(公告)号:WO2008095150A1

    公开(公告)日:2008-08-07

    申请号:PCT/US2008/052737

    申请日:2008-02-01

    Abstract: The elevated temperature forming of magnesium based alloy workpieces by stretching, drawing, bending (or the like) a surface of the heated workpiece over the forming surface of a forming tool is improved by forming an integral adherent layer of magnesium hydroxide on the tool- contacted surface(s) of the magnesium alloy workpiece. The magnesium hydroxide layer may be formed by treating the surface(s) of the sheet with an aqueous salt solution (e.g., sodium chloride) at a temperature and for a time to form a protective layer of desired thickness (e.g., up to about thirty micrometers). If desired, an additional layer of forming lubricant, such as a film comprising boron nitride, may be applied to the magnesium hydroxide layer.

    Abstract translation: 通过在成形工具的成形表面上通过拉伸,拉伸,弯曲(或类似)加热的工件的表面在镁合金工件上升高的温度形成,通过在工具接触上形成一体的氢氧化镁粘附层 镁合金工件的表面。 氢氧化镁层可以通过在温度和温度下用盐水溶液(例如氯化钠)处理片材的表面而形成,以形成所需厚度的保护层(例如,高达约三十 微米)。 如果需要,可以向氢氧化镁层施加附加的成形润滑剂层,例如包含氮化硼的膜。

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