Research On Variable Speed Moving Induction Heating Process Of Large Modulus Heavy Rack

Large modulus heavy-duty rack is commonly used transmission parts in some largescale projects.It has the characteristics of high transmission efficiency,compact structure,long life and reliable operation.Due to its own structural size,it is difficult to obtain an ideal quenching effect in the previous induction heating method for large modulus heavy-duty racks.As a mobile induction heating method different from static induction heating and uniform moving induction heating,variable-speed moving induction heating can reduce the uneven heating of large-modulus heavy-duty racks on the helical tooth surface by speed adjustment.The phenomenon effectively avoids the influence of the edge effect generated by the top and bottom of the tooth on the heating effect in the previous induction heating method.The main research contents of this paper are :Firstly,the heating process of rack under static,uniform moving and variable speed moving induction heating is simulated by ANSYS simulation software.In the analysis of static induction heating,the effects of current distribution,heat flux density distribution and magnetic induction intensity distribution on temperature distribution are studied.In the analysis of uniform induction heating,based on the secondary development of ANSYS,the dynamic modeling method is used to make the inductor move in a uniform linear motion on the helical tooth surface of the rack,and the influence of the inductor on the induction heating effect at the same speed is explored.Secondly,in the initial variable speed moving induction heating analysis,based on the dynamic modeling method,a "tooth surface path adaptive variable speed regulation method" is proposed.Under this method,the helical tooth surface is re-meshed and the corresponding calculation process is proposed.Through the temperature distribution along the tooth width and cross section on different temperature lines,the influence of the sensor speed change on the temperature distribution is analyzed only under the influence of the initial speed change ratio.The helical tooth surface area is subdivided,and the temperature effect of the temperature points on different regions and different paths of the tooth surface is studied under the influence of the initial speed change ratio and the speed change ratio.Finally,a large-modulus heavy-duty rack variable-speed moving induction heating experimental bench was built.The experimental temperature data and simulated temperature data of the solder joints along the tooth width,tooth profile and cross-section direction were compared to verify the accuracy of the variable-speed moving induction heating simulation method and the reliability of improving the rack quenching effect under this method.