【摘要】 目的　对覆膜金属粉末变长线扫描激光烧结过程的温度场进行研究 .方法　对激光源的加热特性 ,粉末材料的热物性参数及激光烧结动态过程是行研究分析 .建立温度场数学模型 ,应用限元方法进行计算 .结果与结论　温度场的数值计算结果与实验测量结果基本吻合 ,利用模场计算结果可以进行工艺参数优化更多还原

【Abstract】 Aim\ To study the numerical simulation of temperature field during laser sintering of polymer coated metal powder. Methods\ Based on the research of laser heating property, thermal physical parameters of metal powder, as well as laser sintering process, a numerical model of the temperature field during length alterable line scanning laser sintering of polymer coated metal powder has been constructed. The calculation of numerical model have been finished by using of Finite Element Method(FEM). Results and Conclusion\ The temperature field during laser sintering was measured to verify the simulation results. Experimental results show well conformity between them. The results can be used to optimize the pocessing parameters.更多还原