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| Numerical simulation of temperature field and stress field in the lapping of W6Mo5Cr4V2 and Ni60A-WC dissimilar materials by
axial laser cladding |
| XIE Weipeng1，2，XU Mingsan1，2，WANG Jianguo1，2，ZENG Shoujin1，2，WEI Tieping1，2 |
| （1.Fujian Key Laboratory of Intelligent Processing Technology and Equipment (Fujian Institute of Engineering),
Fuzhou 350000, China; 2. Mechanical and Automotive Engineering College of Fujian Institute of Engineering,
Fuzhou 350000, China） |
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Abstract Through the temperature field and stress field distribution of the high-speed steel (W6Mo5Cr4V2) and
Ni60A-WC cladding lap on the axial plane, the influence of different laser power, lap sequence and lap ratio on the
temperature field distribution and the stress distribution of dissimilar materials along the specific path of the lap
cladding section are studied. The temperature field and stress field in the process of lapping cladding are simulated
with ansys software, and the single factor variable method is used to simulate the parameters; The simulation re‐
sults of temperature field are verified by using infrared thermometer. The laser power has the greatest influence on
the temperature field during the lapping process. With the increase of the laser power, the influence of the lapping
sequence on the temperature field decreases. When the two lapping powers are 2 000 W, the maximum temperature
first increases and then decreases with the increase of the lapping rate. When the lapping rate is 40%, the maximum
temperature is the maximum. At the same time, the axial and radial stresses at the edges of the lapped coatings are
compressive forces. The circumferential and radial stresses in the overlap area are tensile forces. Due to the difference of thermophysical properties, the anisotropic stress of high-speed steel coating is larger than that of nickel
based tungsten carbide coating. The temperature of each observation point was verified by experiment and simula‐
tion, and the maximum temperature error was 5.66%, which was in line with the expected value.
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Received: 30 September 2022
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Corresponding Authors:
许明三（1974—），男，硕士，教授，主要研究方向为激光增材制造、硬脆材料加工技术、智能制造装备设计。
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2024, Vol. 34 
