Abstract The evaluation of simple thermal model of selective laser melting (SLM) process shows that the temperature distribution in the sample is characterized by two dimensionless parameters: normalized enthalpy and the ratio of dwell time to the thermal diffusion time. We demonstrated that the melt depth data taken for different machines for different materials collapsed in one curve, making possible to rescale the optimal processing parameters between the different materials and machines. The melt pool depth, width and the length are the universal function of these two parameters. Within the operational range of parameters for SLM these functions can be interpolated by the simple algebraic expressions given the possibility to reduce the calculation of the melt pool characteristic to spreadsheet model.

中文翻译：

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增材制造的比例法则

摘要 对选区激光熔化（SLM）过程的简单热模型的评估表明，样品中的温度分布具有两个无量纲参数：归一化焓和停留时间与热扩散时间的比值。我们证明了为不同材料在不同机器上获取的熔体深度数据折叠在一条曲线中，从而可以重新调整不同材料和机器之间的最佳加工参数。熔池深度、宽度和长度是这两个参数的通用函数。在 SLM 参数的操作范围内，这些函数可以通过简单的代数表达式进行插值，从而可以将熔池特性的计算减少到电子表格模型。