Simulation of electromagnetic heating process and design of key parameter on tea fixation machine
                                                         ZHAN Xing xing, ZHAO Zhang feng, ZHONG Jiang, QIAO Xin
               (Key Laboratory of E&M, Ministry of Education & Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, China)

Abstract: Aiming at solving high energy consumption, slow response rate of temperature and uneven fixation in cylinder fixation machine, the existing heating methods were studied, a new type of fixation machine with electromagnetic heating was proposed. Based on the principle of electromagnetic induction, the heating process of roller was simulated based on ANSYS. The effects of the current frequency, current density, and the distance between coil and roller on heating efficiency were analyzed. Through the orthogonal test, the key parameters of electromagnetic heating were determined and the cylinder fixation machine with electromagnetic heating was designed. The results indicate that the designed fixation machine with electromagnetic heating can meet the expected design requirements, the preheating time is significantly shortened, the energy consumption is remarkably reduced and the temperature control precision is apparently improved.

Key words: fixation machine; electromagnetic heating; finite element; orthogonal test