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Influence of Rotation Angle on the Cold Rolling Forming Process of AZ31 Magnesium Alloy Tubes
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Heavy Machinery Engineering Research Centre,Taiyuan University of Science and Tech,Taiyuan

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National Natural Science Foundation of China (U1710113),the National Key R&D Program of China (2018YFB1307902), the China Postdoctoral Science Foundation(2017M622903),the Key Research and Development Program of Shanxi Province (201703D111003,201703D111002,201703D121008),the Joint Postgraduate Training Base of Shanxi Province (2018JD33),the Postgraduate Education Innovation Program of Shanxi Province (2019SY482)

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    Abstract:

    Rotation angle is a key parameter in the processing of three-roller, cold-rolled seamless steel tubes. Using a cold-rolled AZ31 magnesium alloy tube as the research object .Based on the cold-rolling process under different rotation angles, the present paper conducts a comparison and analysis of the effects of different rotation angles on the characteristics of the deformation equivalence effect force, equivalent plastic strain and regularity of the influence of node temperature. Our study shows that increased rotation angles increase the equivalent stress, equivalent plastic strain and node temperature. With the aid of the automaton model and experimental means ,through the experiment and numerical simulation results contrast analysis, the author finds out the grain produced in the process of rolling in the continuous refinement of recrystallization and preliminary organization evolution law. The results reveal that a 50° rotation angle can sufficiently meet technical requirements and provide evidence for the appropriate selection of rotation angles for cold-rolled magnesium alloy tubes.

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[XUE Chun, CHU Zhibing, SU Hui, LI Wei, MA Lifeng, LI Yugui. Influence of Rotation Angle on the Cold Rolling Forming Process of AZ31 Magnesium Alloy Tubes[J]. Rare Metal Materials and Engineering,2020,49(12):4041~4049.]
DOI:10.12442/j. issn.1002-185X.20190966

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History
  • Received:November 17,2019
  • Revised:November 04,2020
  • Adopted:November 29,2019
  • Online: January 13,2021
  • Published: