基于光内同轴送粉激光熔覆成形技术，在45钢基体上进行扭曲薄壁件的堆积。对扭曲薄壁件的倾斜角度、扫描路径、Z轴增量、熔池温度进行控制，分析各自的影响因素。通过斜壁堆积模型和倾斜度试验，得到了熔覆堆积的极限倾斜角。针对扭曲薄壁件的成形过程，设计了光头层间不停光连续扫描和光头层间停光间断扫描等2种扫描路径，并确定光头层间停光间断扫描为合适的扫描路径。通过对Z轴增量和熔池温度的控制，得到了外观光滑、表面粗糙度值低、壁厚均匀、成形质量较高的成形件。%Based on the technology of laser cladding manufacturing process with coaxial inside-beam powder feeding,a screwy thin-walled part is accumulated on the substrate of 45# steel. Under controlling the angle of inclination,scanning paths,Z axis incremental and the temperature of molten bath,their influences are analysed. Through the inclined wall accumulation model and tests of inclination,limiting angle of the cladding accumulation is obtained. According to the forming process of screwy thin-walled part,two scanning paths are designed,which include continuous laser scanning between each layer and intermittent laser scanning between each layer,the better scanning path is gained by analyzing each path. A good forming part is obtained by controlling Z axis incremental and power. The forming part is higher with smooth appearance,lower roughness,and wall thickness is uniformed.
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