| 吴豪琼,高志强.纵-扭谐振超声滚压系统设计与试验*[J].,2023,42(2):406-415 |
| 纵-扭谐振超声滚压系统设计与试验* |
| Longitudinal-torsional resonant ultrasonic rolling system design and enhancement test |
| 投稿时间：2022-08-01 修订日期：2023-03-01 |
| 中文摘要: |
| 为实现6061铝合金高效优质表面强化，本文采用有限元仿真法优化设计了阶梯型纵扭谐动变幅杆，设计、制造了一套纵扭超声滚压实验装置。纵扭谐动通过检测变幅杆输出端纵向、扭转两个方向的振幅间接验证。进行超声滚压实验，结果表明：1）相比普通滚压加工，纵扭谐振超声滚压过试件表层显微硬度最高提高了41%；2）在所选参数范围内出现随着静压力增大表面显微硬度整体呈现局部变化整体增大趋势，随着转速增加呈现局部变化整体减小的趋势，随着进给量的增大先增大后减小的现象；3）相比普通滚压加工，纵扭谐振超声滚压过的工件表面组织更细密光滑，滚痕由于扭振的高频反复挤压明显减少，形貌得到了较大改善。 |
| 英文摘要: |
| In order to achieve 6061 aluminium alloy high efficiency and high quality surface strengthening，a stepped longitudinal-torsional harmonic horn is designed by means of simulation in this paper, a set of experimental equipment for longitudinal-torsional ultrasonic rolling is designed and manufactured. The longitudinal and torsional resonance is verified indirectly by detecting the output end amplitude of the horn in longitudinal and torsional directions.The ultrasonic rolling test of 6061 aluminium alloy bar was carried out, the results show that：1）Compared with common rolling process, the microhardness of longitudinal torsional resonant ultrasonic rolling specimen is increased by 41%；2）In the range of the selected parameters, the microhardness of the surface increases locally with the increase of static pressure and decreases locally with the increase of rotating speed, with the increase of feed, it increases first and then decreases；3）Compared with common rolling process, the surface structure of workpiece rolled by longitudinal torsional resonant ultrasonic rolling is finer and smoother. |
| DOI：10.11684/j.issn.1000-310X.2023.02.025 |
| 中文关键词: 纵扭谐振 超声 滚压 正交试验 |
| 英文关键词: Longitudinal-torsional resonance Ultrasound ?Roll pressing Orthogonal test |
| 基金项目:国家自然科学基金项目(51005071)， 河南省科技攻关项目（212102210367, 222102220026），河南省高校重点科研项目计划项目(22B460004） |
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