Volume 39 Issue 1
Feb.  2024
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WANG Haoda, HAO Jingbin, TIAN Hongfang, FANG Songyu. Experimental Study on Laser Cladding Remanufacturing Process of H13 Hot Forging Die Steel[J]. Development and Application of Materials, 2024, 39(1): 74-85.
Citation: WANG Haoda, HAO Jingbin, TIAN Hongfang, FANG Songyu. Experimental Study on Laser Cladding Remanufacturing Process of H13 Hot Forging Die Steel[J]. Development and Application of Materials, 2024, 39(1): 74-85.
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Experimental Study on Laser Cladding Remanufacturing Process of H13 Hot Forging Die Steel

  • 1. School of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, China;

  • 2. Shandong Haida Robot Technology Co., Ltd., Rizhao 276801, China

  • Received Date: 2023-10-27
    Abstract
  • The hot forging die often has to bear extremely high temperature and strong impact load in the working process, and it is very easy to fail due to wear, corrosion and thermal fatigue. In this study, the process experimentation of H13 hot forging die steel laser cladding technology is studied, and the Inconel 625 high-temperature alloy coating on the surface of H13 die steel is prepared. The microstructure and mechanical properties of the coatings are analyzed. The results show that the change of process parameters has no effect on the phase composition of the coating, and a robust metallurgical bond is established between the cladding layer and the substrate. The optimal microhardness and high-temperature wear resistance are achieved when the laser power is 1 200 W, the scanning speed is 200 mm·min-1, and the powder feeding rate is 1.0 r·min-1.Experimental results from the re-manufacturing of automotive stepped shaft forging dies demonstrate a 28% reduction in wear rate compared with the substrate, and the high-temperature wear resistance of the coating significantly exceeds that of the substrate. The laser-clad Inconel 625 coating has a substantial impact on the service life improvement of the die re-manufacturing.

     

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