GH3625合金激光直接成形工艺

Laser Metal Direct Manufacturing Process of GH3625 Alloy

为了研究工艺参数对金属激光直接成形零件质量的影响,通过正交试验的方法对单道单层GH3625合金激光直接成形工艺进行了研究,主要探究了激光功率、扫描速度、送粉速度等参数对单道单层成形截面宽度和高度的影响规律,提出预测模型并做了验证。结果表明,在单道单层成形中,激光功率、送粉速度、扫描速度等工艺参数对单道宽度和高度具有不同程度的影响,其中,对于单道成形宽度和高度来讲,扫描速度对其影响最为明显。试验验证结果表明借助Minitab软件得到的线性回归模型是有效的。

In order to study the influence of process parameters on the quality of laser metal direct forming parts, the direct forming process of single-track single-layer GH3625 alloy was studied by orthogonal test. The influence of laser power, scanning speed, powder feeding speed and other parameters on the width and height of single-track sin- gle-layer forming cross-section was mainly studied. The forecasting model was proposed and confirmed. The results show that the process parameters such as laser power, powder feeding speed, scanning speed and so on are different in influence on forming cross-section. Among them, the influence of scanning speed is the most obvious. The experimen- tal results show that the linear regression model obtained by Minitab software is effective.