Scholarlink

<p>To investigate the influence of process parameters on the forming quality and microstructural evolution of shear spinning of conical parts, this study developed an explicit dynamic model for the shear spinning of 6061 aluminum alloy conical parts based on elastoplastic mechanics and nonlinear contact theory. Through orthogonal experimental design, the influence laws of mandrel speed, roller feed ratio, and clearance between roller and mandrel on the wall thickness difference and spinning force of the spun parts were systematically investigated, and the significance order of each parameter was determined by using the range analysis method. The distribution of equivalent stress and equivalent plastic strain during the shear spinning process was analyzed, and the microstructure evolution under different feed ratios was investigated by electron backscattering diffraction (EBSD) technology. The results show that with the increase of mandrel speed, the wall thickness difference increases first and then decreases, while the spinning force increases continuously. As the roller feed ratio increases, both the wall thickness difference and the spinning force increase. An increase in the clearance between roller and mandrel leads to an increase in the wall thickness difference, but a decrease in the spinning force. EBSD analysis shows that with the increase of the roller feed ratio, the texture gradually weakens, the average grain size refines from 99.5 to 85.2&#xa0;μm, the Σ3 grain boundaries decrease while the Σ5 grain boundaries increase, and the KAM value decreases to 1.61°.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Influence of Process Parameters on Forming Quality and Microstructural Evolution in Shear Spinning of 6061 Aluminum Alloy Conical Parts

  • 期刊论文

  • 发表日期：

    2025年8月27日

查看全文
  • Shunxin Liu,
  • Fujun Wu,
  • Kaixuan Li,
  • Guang Zeng,
  • Wenguang Liu,
  • Chunjiang Zhao,
  • Menghao Bao

摘要

To investigate the influence of process parameters on the forming quality and microstructural evolution of shear spinning of conical parts, this study developed an explicit dynamic model for the shear spinning of 6061 aluminum alloy conical parts based on elastoplastic mechanics and nonlinear contact theory. Through orthogonal experimental design, the influence laws of mandrel speed, roller feed ratio, and clearance between roller and mandrel on the wall thickness difference and spinning force of the spun parts were systematically investigated, and the significance order of each parameter was determined by using the range analysis method. The distribution of equivalent stress and equivalent plastic strain during the shear spinning process was analyzed, and the microstructure evolution under different feed ratios was investigated by electron backscattering diffraction (EBSD) technology. The results show that with the increase of mandrel speed, the wall thickness difference increases first and then decreases, while the spinning force increases continuously. As the roller feed ratio increases, both the wall thickness difference and the spinning force increase. An increase in the clearance between roller and mandrel leads to an increase in the wall thickness difference, but a decrease in the spinning force. EBSD analysis shows that with the increase of the roller feed ratio, the texture gradually weakens, the average grain size refines from 99.5 to 85.2 μm, the Σ3 grain boundaries decrease while the Σ5 grain boundaries increase, and the KAM value decreases to 1.61°.