Date:

2025-04-30

Title of Paper:

Real-time process control of powder bed fusion by monitoring dynamic temperature field

Journal:

Advances in Manufacturing

Summary:

This study aims to optimize the uniformity of the temperature field during sintering to improve part performance. A temperature-field monitoring system is established based on an infrared thermal imager and the temperature field data obtained during the sintering of a part can be measured in real time. The relationship among the sintering temperature field, sintering process parameters, and part performance is established experimentally. Subsequently, a temperature field monitoring and analysis system is constructed, and various sintering temperature-field control strategies are established for various part sizes. Finally, a dynamic control strategy for controlling the temperature field during sintering is proposed, experimentally validated, and fully integrated into a developed powder bed fusion (PBF) equipment. For eight-shaped standard parts, the range of sintering temperature field is optimized from 44.1 °C to 19.7 °C, whereas the tensile strength of the parts increased by 15.4%. For large-size H parts, localized over burning is eliminated and the final quality of the part is optimized. This strategy is critical for the optimization of the PBF process for large-sized parts, in particular in the large-sized die manufacturing industry, which offers promise in the optimization of part performance.

Co-author:

Xiao-Kang Huang, Xiao-Yong Tian*, Qi Zhong, Shun-Wen He, Chun-Bao Huo, Yi Cao, Z

Volume:

DOI: 10.1007/s40436-020-00317-y

Translation or Not:

No

Date of Publication:

2020-07-02