激光感应复合熔覆的稀释率分析模型及实验研究

在分析计算感应加热温度模型和激光感应复合熔覆能量作用的基础上，推导出了激光感应复合熔覆稀释率的表达式，定量反映了稀释率与激光、感应能量、材料特性和工艺参数之间的关系，并且通过实验进行了验证。研究结果表明：复合熔覆的稀释率随激光功率的增加而增大，随送粉率的增加而减小，随扫描速度的增大而减小；在其他参数恒定，感应能量增加时，稀释率显著增大。该稀释率分析模型有助于复合熔覆加工中稀释率的控制，为复合熔覆工艺参数的优化设计和熔覆层的质量控制提供了理论基础。

Analysis model and experimental research of dilution in laser induction hybrid cladding

Based on the analyses of induction heating temperature model and laser induction hybrid cladding energy function, the dilution expression was derived, which quantitatively reflect the relationship between dilution and hybrid cladding process parameters. The expression was proved by the laser induction hybrid cladding experiments. The results show that the dilution increases with the increase of laser power, while the dilution decreases with the increase of powder feeding rate and scanning speed. The dilution increases significantly with the increase of induction energy, when the other processing parameters are not changed. The dilution model is helpful to control the dilution in laser induction hybrid cladding. It can be used for optimizing the process parameters and quality control of cladding coatings.