Laser & Optoelectronics Progress, Volume. 58, Issue 23, 2314008(2021)
Relative Density of Mold Steel H13 Fabricated by Hybrid Laser Spot Melting
Mold steel has excellent high temperature performance and is widely used in the field of high temperature die casting. However, conventional mechanical machining is unable to fabricate complicated conformal cooling structures. Furthermore, regular selective laser melting (SLM) is inefficient to build mold steel H13 and it usually gives rise to interval cracks and local distortion. Consequently, in terms of fabricating mold steel H13 by SLM, this paper introduces a self-developed high-temperature SLM system and the innovative hybrid spot technology, including semiconductor laser preheating spot and fiber laser melting spot. When the scanning speed is 1800-2500 mm·s-1 and the substrate is preheated at 250
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Yibo Gao, Yong Yang, Yugeng Zhou, Zhenwei Liu, Wenjie Wu, Longbiao Gao, Qiyong Shi, Xiangbin Kong, Jianming Zheng, Jianzhong Fu, Guiying Yu, Jinhua Wu, Chunwei Wang, Bixia Wang, Ling Shan. Relative Density of Mold Steel H13 Fabricated by Hybrid Laser Spot Melting[J]. Laser & Optoelectronics Progress, 2021, 58(23): 2314008
Category: Lasers and Laser Optics
Received: Mar. 29, 2021
Accepted: Apr. 7, 2021
Published Online: Nov. 19, 2021
The Author Email: Fu Jianzhong (fjz@zju.edu.cn)