激光熔覆加工过程优化控制研究

Research of Optimal Control on Laser Cladding Process

建立了激光熔覆过程的影响参数简化物理模型,并测得其相互间线性关系。结果表明,在激光功率P和激光扫描速度ν变化不大时,激光熔覆表面宏观形貌与送粉量关系密切。在其它条件相同情况下,由简单控制系统闭环调节送粉量和加工件的移动速度,可实现熔覆层高度可控及表面平整度提高。

The models of main influential factors for laser cladding process quality were investigated. Experiments were carried out to obtain the effect of combined parameters such as linear correlation with the powder mass flow rate. Results show that the powder mass flow rate is the most important parameter in good quality clad areas and complex geometry, while proper laser powers of 1200W and 1600W with powder feed rate 3mm/s in the laser cladding. So it is a novel technology for the improvement of metal components surfacing roughness high quality machine parts or repaired.