Numerical Simulation Of Diameter-axial Annular Rolling Of 40Cr13 Stainless Steel Rings

40Cr13 is a martensitic stainless steel material with good oxidation resistance,good wear resistance and high hardness.It is generally used for bearing steels that require certain rust resistance and hot oil pumps that require good wear resistance and high hardness,also used for parts such as train wheels,valve bearings and large slewing bearings.With the rapid development of manufacturing,The market is in short supply for40Cr13 rings,but at the same time,the accuracy and performance requirements of the rings are also increasing.At present,the main method for the production of 40Cr13 rings is radial-axial rolling.However,in the production process of the ring rolling machine,the rejection rate of the rings is high,and the accuracy and mechanical property are poor.In order to meet the market requirements and enhance the competitiveness of enterprises,it is of great significance to study the radial-axial rolling process of 40Cr13 rings.Firstly,this article is based on the rolling process of the D53K-4000 ring rolling machine at Ma'an shan Chenxu Machinery Manufacturing Co.,Ltd.Collect the historical rolling data of the ring rolling machine to build 3D model,and import it into the ring rolling module of the finite element software simufact forming.At the same time,the parameters are set according to the collected data.The simulation results are obtained.The results of the historical data are compared with the simulation results to verify the match between the software and the ring rolling machine.The comparison results show that the actual processing of the D53K-4000 ring rolling machine can be simulated with simufact forming.Secondly,the ring specifications were modeled and simulated according to the customer's requirements.The law of the changes in ring size,metal flow,temperature,equivalent plastic strain and rolling force were introduced in detail.Then,chose three parameters of the rolling process,and the single-variable method was used to analyze the effect of each parameter on the ring rolling results when different values were taken.The results show that the initial rolling temperature of the ring was 1100?,the friction coefficient of the driving roller was 0.88,and the driving roller rotation speed is 20r/min.The precision and mechanical properties of the finished ring are higher than those of the ring rolled under the previous parameters.Finally,the parameters which are obtained were used for the radial-axial ring rolling of the 40Cr13 stainless steel ring of the company.The results show that the optimized scheme effectively improves the dimensional accuracy and mechanical property of the rings.The research in this paper is beneficial to the improvement of the rolling quality of 40Cr13 stainless steel rings,the reduction of scrap rate and the reduction of manufacturing cost,and also can provide reference for the research of radial-axial rolling of different material rings.