• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2023, Vol. 59 ›› Issue (10): 85-95.doi: 10.3901/JME.2023.10.085

Previous Articles     Next Articles

Towards Extremely Large-scale Radial-axial Ring Rolling for Constant Ring Growth State with Accurate Closed-loop Control Method

QIAN Dongsheng1,2,3, TIAN Han1,2, DENG Jiadong2,3   

  1. 1. School of Material Science and Engineering, Wuhan University of Technology, Wuhan 430070;
    2. Hubei Key Laboratory of Advanced Technology of Automotive Parts, Wuhan University of Technology, Wuhan 430070;
    3. Hubei Engineering Research Center for Green Precision Material Forming, Wuhan University of Technology, Wuhan 430070
  • Received:2022-07-01 Revised:2022-12-10 Online:2023-05-20 Published:2023-07-19

Abstract: Radial-axial ring rolling(RARR) is an irreplaceable technology for the overall plastic forming of large-scale seamless rings. The constant growth velocity of the ring during the main rolling stage is an ideal state for radial-axial stable rolling, how to obtain the constant growth state of the ring that is close to the ideal design through a reasonable control strategy is a key issue in the stability control of the large-scale RARR process. In order to solve this problem, a theoretical control method for the growth rate of ring outer diameter under design-driven for the actual rolling process is proposed. Firstly, a method for measuring the real-time size of the ring during the rolling process is proposed to realize real-time monitoring of the ring growth velocity; Secondly, a design-driven ring growth speed control method(Ideal state control method) is establish by secondary development through user subroutine VUAMP in the ABAQUS platform and the parameters required by this method are calculated by the equivalent size model to eliminate the errors caused by geometry irregularities of the ring(Size correction control method). Finally, the small error caused by dynamic defects is eliminated through the real-time error feedback control strategy, so that the growth rate can accurately approach the target value and a precise closed-loop control model of constant growth velocity of outer diameter in main rolling stage that combines the process and design is formed(Closed-loop control method based on size correction). The result shows that the constant growth velocity can reduce the eccentricity of the ring in the main rolling stage and improve the ovality of the final ring, which can provide a reliable method for the robust control of the actual extremely large-scale RARR process.

Key words: radial-axial rolling, growth velocity, design-driven, closed-loop control

CLC Number: