ABSTRACT

Additive manufacturing offers a range of novel applications. However, the manufacturing process is complex and the production of almost defect-free parts with high reliability and durability is still a challenge. Thermography is a valuable tool for process surveillance, especially in metal additive manufacturing processes. The high process temperatures allow one to use cameras usually operating in the visible spectral range. Here, we compare the results of measurements during the manufacturing process of a commercial laser metal deposition setup using a mid wavelength infrared camera with those from a short wavelength infrared camera and those from a visual spectrum high-speed camera with band pass filter in the near infrared range.

摘要

增材制造提供了一系列新颖的应用。然而，制造过程复杂，生产几乎无缺陷且具有高可靠性和耐用性的零件仍然是一个挑战。热成像是过程监控的宝贵工具，尤其是在金属增材制造过程中。高工艺温度允许人们使用通常在可见光谱范围内工作的相机。在这里，我们比较了商业激光金属沉积装置制造过程中使用中波长红外相机的测量结果、短波长红外相机的测量结果以及近处带通滤波器的可见光谱高速相机的测量结果。红外范围。