| In this paper, study numerical simulation about the high-frequency induction welding temperature field, established mathematical model of induction welding cladding based on electromagnetic and heat transfer theory and proceed from characters of induction cladding welding. In order to find the rule of temperature distribution when welding, using ADINA to simulate high frequency induction welding temperature field.The results of simulation analysis revealed that, as for big-diameter and thin work pieces, the surface skin effect obviously decreased and the temperature difference of the entire copper loop and copper-steel interface was comparatively small when material was ferromagnetism.The temperature field distribution pictures with different mains inputs were analyzed. The results indicated that there is critical power of induction cladding welding. When the power droped to critical value,dynamic hot balance was achieved. And the work piece could not be melt only by prolonging heat time.According to the simulation analysis of different interface heat transfer conditions, the opitimized parameters(main powe imput, cooling water flux, water-cooling time )were found. Moreover, the technological requirement of making copper metl and keeping steel substrate unmelt could only be achieved under optimized parameters.Based on the infrared temperature measurement system, the temperatures of set point on the steel surface were investigated. Compared with simulation results, the conclusion could be made: when error value set in the range of 5%～10%, the change trend of temperation was basically uniform. Therefore, the feasibility of finit element analysis method was proved which could provide strong technical support for practical engineering application.
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