The Research On Process Optimization And Experiment Of High-frequency Welding Of Low Carbon Steel Based On ANSYS

In recent years,with the vigorous development of the real estate industry,the building structure pipe needs of people are increasing gradually.Most structural pipes are produced by high-frequency induction welding,and this is a complex process of coupling multiple factors.Although this welding method can effectively improve the efficiency of production and reduce production costs,there are still some defects in the quality of the welded pipe,and even cause serious security risks in the using process.Therefore,how to improve the quality of high-frequency welded pipe in actual production is an urgent problem to be solved now.The influence of welding quality is mainly to select welding parameters,comparing with the traditional process,it rely on repeated testing and production experience to design production technology,using the finite element analysis technology to analyze the process of high-frequency welding,and then predict the high-frequency induction welding quality and manufacturability,which can save production cost and shorten the process development time.Therefore,the article is based on the high-frequency welded pipe of Q195 steel,the finite element simulation analysis and the experiment of ANSYS are used to study the quality problems of welded pipe as follows:(1)Quality problems in practical production of enterprise was combined with theoretical analysis,high-frequency induction welding process was redesigned;It can use ANSYS finite element software to establish the high-frequency welding heat source model and physical model,analyze the temperature field and the stress field,and write the APDL parameterized command flow for the numerical simulation of high-frequency welding.(2)The theory of elastic-plastic finite element was utilized to simulate the process of high-frequency induction welding,different welding parameters like opening angle,frequency welding,welding current and welding speed excitation of high-frequency induction welding process,welding residual stress and deformation was analyzed.(3)Combining the finite simulation with orthogonal design,and the welding parameters,welding opening angle frequency,excitation current and optimize the welding speed were optimized,the influence degree of the residual stress on high-frequency welded pipe is analyzed.The optimum process parameters were determined,and the numerical simulation was carried out to verify the reliability of the orthogonal test,the distribution ofthe temperature field and the stress field of high-frequency welding is obtained.Using the optimized process solutions to produce of high-frequency induction welded pipe,The obtained samples were subjected to relevant experiments and tests,including related morphology and fine texture observation,micro hardness test,tensile test and ultrasonic test,and the results are compared with numerical simulation.Analyzing and comparing the numerical simulation results and experimental process can obtain the following conclusions: ANSYS finite element numerical simulation technique can simulate the high-frequency induction welding process accurately,welding process parameters were optimized,and predict the temperature field of high-frequency induction welding and stress field more effectively,shorten development time of the high-frequency induction welding process,reduce the cost of production,provide technical guidance for effective to improve the quality of the welded pipe;provide safety guarantee for building structure pipe;This would help industry develop green and low-carbon welded pipe.