PROCESS MONITORING IN LASER SINTERING USING THERMAL IMAGING
PROCESS MONITORING IN LASER SINTERING USING THERMAL IMAGING
复制标题
使用热成像进行激光烧结过程监控
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
G. Witt
中科院分区：
文献类型：
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作者：
A. Wegner;G. Witt
在激光烧结中，收缩不均匀、翘曲、内卷曲和零件性能的重复性差是众所周知的问题。这些效应都受到粉床表面温度分布不均匀的显著影响。为此，经常要求将额外的测量设备集成到机器中，以实现先进的过程监控。在所做的研究中，成功地将热成像系统集成到激光烧结机中。分析了工艺参数、表面温度分布以及熔化材料温度之间的关系，以及它们对零件性能的影响。
In laser sintering, inhomogeneous shrinkage, warpage, in-build curling and poor repeatability of part properties are well-known problems. All these effects are significantly influenced by the inhomogeneous temperature distribution on the powder bed surface. For this reason, it is often asked for the integration of additional measuring equipment into the machines for advanced process monitoring. In the research done, a thermal imaging system was successfully integrated into a laser sintering machine. Analyses were performed to understand the correlations between process parameters, the distribution of surface temperatures as well as the temperature of the melted material, and their influence on part properties.