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

doi:10.1007/s40436-020-00317-y

Advances in Manufacturing ›› 2020, Vol. 8 ›› Issue (3): 380-391.doi: 10.1007/s40436-020-00317-y

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

Xiao-Kang Huang¹, Xiao-Yong Tian¹, Qi Zhong¹, Shun-Wen He¹, Chun-Bao Huo¹, Yi Cao¹, Zhi-Qiang Tong¹, Di-Chen Li¹

State Key Laboratory of Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China

Received:2019-11-26 Revised:2020-04-11 Published:2020-09-10
Contact: Xiao-Yong Tian E-mail:leoxyt@mail.xjtu.edu.cn
Supported by:
This work is supported by the National High Technology Research and Development Program of China (863 Program) (Grant No. 2015AA042503).

Abstract

Abstract: 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 temperaturefield 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.

The full text can be downloaded at https://link.springer.com/article/10.1007/s40436-020-00317-y

Key words: Powder bed fusion (PBF), Sintering temperature field, Monitoring system, Infrared thermal imager

Xiao-Kang Huang, Xiao-Yong Tian, Qi Zhong, Shun-Wen He, Chun-Bao Huo, Yi Cao, Zhi-Qiang Tong, Di-Chen Li. Real-time process control of powder bed fusion by monitoring dynamic temperature field[J]. Advances in Manufacturing, 2020, 8(3): 380-391.

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

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