Experimental Study of Laser Cladding WC Particle-reinforced Composite Coatings on H13 Steel Surface
Author of the article: SHI Xiaolei1, LI Haiyang1, QIU Huanxia1, SONG Jianli1,2, DENG Qilin3, TANG Bin4
Author's Workplace：1. School of Instrument Science and Opto Electronics Engineering, Beijing Information Science and Technology University, Beijing 100192, China; 2. Shandong Provincial Key Lab. of Special Welding Technology, Weihai 264209, China; 3. School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China; 4.Shanghai Electric Power Co., Ltd., Wujing Thermal Power Plant, Shanghai 200241, China
Key Words：H13 steel; laser cladding; WC composite coating; microstructure and properties
Abstract：
Particle-reinforced composite coatings of H13+H13/WC were prepared on the surface of H13 steel substrate. The
microstructure evolution mechanism, interface behavior, microhardness distribution and wear performance of the coatings
were analyzed and characterized. The results show that the cladding layers have been metallurgical bonded with the matrix,
and the forming quality of the composite coatings is perfect. Under the same process parameters, the microhardness of the
H13/20% WC coating is the highest, with an average value of 639 HV, with good wear resistance. The wear mechanism of
H13 steel matrix is mainly abrasive wear, oxidation wear and a little stripping wear, and the wear forms of each cladding layer
are mainly abrasive wear and oxidation wear.
