中文摘要：

基于光内同轴送粉激光快速成型技术,采用316L不锈钢粉末,通过对熔覆形貌、熔池温度、z轴增量、熔覆路径规划等因素进行控制,在45钢基体上进行薄壁墙堆积。基于响应曲面法建立了熔覆形貌的数学模型。利用ANSYS软件模拟覆层温度,并对熔覆过程进行温度控制。确定了双向扫描＋停光空过的扫描路径规划。最终获得了光洁平整,上下粗细均匀、上表面平直、成型质量好的薄壁墙成型件。

英文摘要：

Based on internal laser coaxialpowder feeding technology, using 316L stainless steel powder, the thin-wall accumulation was formed on 45 substrate by means of adjusting the factors of cladding profile, bath temperature, increment along z axis as well as trajectory planning.A mathematic model for cladding profile was built based on response surface method.The temperature of the cladding was simulated by ANSYS, and then the temperature was controlled in the cladding process. Moreover, a scan trajectory such as two-way scanning ＋ light stop empty was ensured and finally a thin wall part with smooth fiat, uniform shape upper surface straighlaess and good forming quality can be obtained.