【摘要】 本文探究了工艺参数对熔池温度和熔覆层成形高度及宽度的影响规律,并结合实际工艺过程,选取激光功率作为熔池温度控制的主要变量,为后续控制熔池温度变量的选取以及工艺参数的选取提供了参考。试验结果表明:在熔池温度上,激光功率增大,熔池温度升高;扫描速度和送粉速率增大,熔池温度降低。在熔池尺寸上,激光功率和送粉速度增大,熔覆层的高度和宽度分别升高;扫描速度增大,熔覆层的高度和宽度分别降低。在高度上,影响关系大小依次为送粉速率、扫描速度、激光功率;在宽度上,影响关系大小依次为激光功率、扫描速度、送粉速率。更多还原

【Abstract】 In this paper, the influence of process parameters on the temperature of molten pool and the forming height and width of cladding layer was explored. Combined with the actual process, the laser power was selected as the main variable of molten pool temperature control, which provides a reference for the selection of subsequent control variables of molten pool temperature and process parameters. The results showed that the temperature of molten pool decreases with the increase of laser power, and increases with the increase of scanning speed and powder feeding rate;The results showed that the height and width of cladding layer increase with the increase of laser power and powder feeding speed, while the height and width of cladding layer decrease with the increase of scanning speed; In height,the order of influence is powder feeding rate, scanning speed and laser power; In width, the order of influence is laser power, scanning speed and powder feeding rate.更多还原