Transactions of Materials and Heat Treatment

Title：Laser cladding strengthening of complex hot stamping die surface and friction and wear control technology

Authors： Chen Wei1 Wang Yifan1 Liu Jie1 Cao Yishu2 Bai Ying2 Chen Chungang2 Zhang Xiaoji2

Unit： 1. Jiangsu University 2.Wuxi Shuguang Precision Industry Co. Ltd.

KeyWords： laser cladding friction and wear hot stamping die Fe-based powder Co-based powder

ClassificationCode：TN249；TH117.1

year,vol(issue):pagenumber：2024,49(3):186-193

Abstract：

ue to the bad service condition, the working surface of hot stamping die is easy to be worn and cracked, and the traditional strengthening methods have many limitations while reducing the die wear. Therefore, in order to achieve the cladding of complex die surface, the laser cladding path was optimized by changing the posture of manipulator and positioner, and the hot stamping condition was simulated by the differential temperature reciprocating friction and wear experimental device to analyze the friction and wear properties of laser cladding layer. The research results indicate that both cladding layers of Fe-based powder and Co-based powder effectively reduce the friction factors and the wear amount of die surface, and the laser cladding layer of Stellite 12 Co-based powder has the smallest friction factor and wear amount. Scanning electron microscopy observation reveals that the oxide layer and compound on the surfaces of laser cladding layers for Fe901 Fe-based powder and Stellite 12 Co-based powder play a role in lubricating and reducing wear, achieving the wear control of die surface.

Funds：

2022年度无锡市“太湖之光”科技攻关（产业化关键技术攻关）项目（WX0304B010301220019PD）

作者简介：陈炜（1965-），男，博士，教授，E-mail：chen_wei@ujs.edu.cn

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