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    • 21. 发明公开
    • ADDITIVE LAYER MANUFACTURING
    • 添加剂层的制造
    • EP2916983A1
    • 2015-09-16
    • EP13789380.6
    • 2013-11-06
    • BAE Systems PLC
    • SIDHU, JagjitWESCOTT, Andrew, DavidPOTTER, Mark Alfred
    • B22F3/105B29C67/00
    • B22F3/1055B22F7/04B22F2003/1056B22F2003/1057B22F2007/042B23K9/04B23K9/0956B23K26/34B23K26/354B29C64/135B29C64/141B29C64/153B29C64/386B33Y10/00B33Y30/00B33Y50/02Y02P10/295
    • Apparatus and a method for forming a metallic component by additive layer manufacturing are provided. The method includes the steps of mounting a work piece (3) to ALM manufacturing apparatus including measuring means in the form of load cells (13, 14) to measure stresses tending to distort the work piece, using a laser heat source (24) to apply heat to a surface (18) of the work piece (3) sufficient to melt it; adding metallic material to the melted surface (18) and moving the heat source (24) relative to the work piece (3) whereby progressively to form a layer (30) of metallic material on it; repeating the above steps as required, whereby progressively to form the component and, while doing so, measuring stresses tending to distort the component with the load cells (13, 14) and, if they are above a predetermined threshold, stress relieving the work piece with means such as a pulsed laser (27) while still mounted to the apparatus to reduce distortion to a predetermined level, and again repeating above steps as required to complete the component. A computer (16) may be included to control the whole process.
    • 提供了通过添加剂层制造来形成金属部件的设备和方法。 该方法包括以下步骤:将工件(3)安装到ALM制造设备,该设备包括测力传感器(13,14)形式的测量装置,以使用激光热源(24)来测量趋于使工件变形的应力 对工件(3)的表面(18)施加足够的热量使其熔化;向熔化的表面(18)添加金属材料并相对于工件(3)移动热源(24),由此逐渐形成 在其上面的金属材料层(30) 根据需要重复上述步骤,由此渐进地形成部件,并且在这样做的同时测量倾向于使测力传感器(13,14)扭曲部件的应力,并且如果它们高于预定阈值,则应力消除工件 使用脉冲激光器(27)等装置,同时仍安装到设备上以将失真减小到预定水平,并且再次按照需要重复上述步骤以完成部件。 可以包括计算机(16)来控制整个过程。