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首页> 外文期刊>Powder Metallurgy and Metal Ceramics >EFFECTS OF PROCESSING PARAMETERS ON THE TEMPERATURE FIELD OF SELECTIVE LASER MELTING METAL POWDER
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EFFECTS OF PROCESSING PARAMETERS ON THE TEMPERATURE FIELD OF SELECTIVE LASER MELTING METAL POWDER

机译：加工参数对选择性激光熔炼金属粉末温度场的影响

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摘要

Based on temperature-dependent thermophysical parameters and nonlinear phase transformation from powder to liquid, a three-dimensional transient thermal finite model of selective laser melting process is developed. Commercial ANSYS software is used to simulate the distribution of the temperature field in selective laser melting. The simulation results show that a lower scan speed, higher laser power, and a lower scan interval enable much higher maximum temperature in the powder bed and wider scan track width. The scan modes also have great influence on the temperature field. Temperature in the powder bed experiences fluctuant variation with transverse scan mode in contrast with moderate variation with lengthwise scan mode. The simulated results are compared with the experimental results and good agreement is found in scan track width.
机译：基于随温度变化的热物理参数和从粉末到液体的非线性相变，建立了选择性激光熔融过程的三维瞬态热有限模型。商业ANSYS软件用于模拟选择性激光熔化中温度场的分布。仿真结果表明，较低的扫描速度，较高的激光功率和较低的扫描间隔可实现更高的粉末床最高温度和较宽的扫描轨迹宽度。扫描模式对温度场也有很大的影响。与横向扫描模式的适度变化相反，横向扫描模式的粉末床温度会发生波动变化。将模拟结果与实验结果进行比较，发现扫描轨迹宽度吻合良好。

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