A selective layer melting or other additive layer fabrication method in which powdered material is fused by heating it with a pulsed laser, the pulses being modulated whilst the laser is traversing the substrate so as to control the thickness and/or width of the layer being formed.. Initial layers of the fabrication structure may be formed more thickly than subsequent layers, e.g. by means of a CW laser, to reduce distortion. This aspect of the invention may be employed independently of the use of a pulsed laser to form the subsequent layers.
申请公布号
WO2010125381(A1)
申请公布日期
2010.11.04
申请号
WO2010GB50686
申请日期
2010.04.27
申请人
BAE SYSTEMS PLC;WESCOTT, ANDREW, DAVID;MORELAND, BENJAMIN, RICHARD;SIDHU, JAGJIT