Study On Mechanical Properties Of 36mn VS4 Rod Material Based On Pulse Current Processing

Green,low-carbon,and energy-saving requirements have made the production of automotive engines more stringent.The connecting rod is one of the main components of the engine,and its performance and quality improvement will have a significant impact on the production and use of the engine.This paper explores the mechanical properties of the connecting rod material36MnVS4 after high-energy transient pulse current processing,and performs finite element simulation analysis and optimization of the connecting rod.The main contents are as follows:1.Tensile test and fracture toughness test were performed on the pulsed current treated and untreated samples.The micro Vickers hardness of the specimen was measured,and the fracture morphology and the microstructure of the specimen were observed.2.The microstructure of pulsed current treated and untreated samples was analyzed.After the pulsed current treatment,the amount of ferrite was significantly reduced in the microstructure of the sample,and was refined,the distribution was more uniform,and there was a certain amount of pearlite.increase.The tensile properties of the specimens changed,the tensile strength increased to 1131 MPa,and the plasticity decreased.The fracture toughness K_ⅠCC of the material increased to 62.9MPam^1/2,and the hardness value increased to 322.437 HV.3.Using the mechanical parameters obtained from the test,the force of the connecting rod under the most dangerous conditions is calculated;the three-dimensional model of the connecting rod is established using SolidWorks,the finite element simulation of the connecting rod is performed using ANSYS,and the pulsed current processing and unprocessed connecting rod are calculated.Static strength safety factor.4.According to the pulse current,the safety factor of the connecting rod’s static strength safety coefficient is processed,the connecting rod is relatively optimized,and the modal analysis of the optimized connecting rod is performed to obtain the natural frequency and mode shape of the first 6 steps of the connecting rod.The various modes of vibration are analyzed.Provides a basis for further design of the connecting rod.