Page 80 - 《应用声学》2022年第4期
P. 80

第 41 卷 第 4 期                                                                       Vol. 41, No. 4
             2022 年 7 月                          Journal of Applied Acoustics                      July, 2022

             ⋄ 研究报告 ⋄



                               压电振子阵列型超声喷丸强化                                            ∗






                                        李朝阳 李道朋 张炜舜 傅 波                          †


                                               (四川大学机械工程学院       成都   610065)

                摘要：为了提高超声喷丸强化加工的面积、效率及加工质量，对传统单振子超声喷丸强化技术进行了改进，提
                出了压电振子阵列型超声喷丸强化加工方法。分析了超声喷丸强化的机理，进行了振子阵列的设计，实验测试
                了系统样机在不同超声电源功率下弹丸撞击工件的区域分布；探究了喷丸参数对加工样件显微硬度的影响。
                实验结果表明：压电振子阵列型超声喷丸强化技术可以有效增加喷丸冲击工件的面积，提高工件的表面显微
                硬度和加工效率。超声电源功率为 50 W、喷丸时间为 20 min、喷丸距离为 5 mm、弹丸直径为 1.5 mm 时喷丸
                效果最好，此时工件表面显微硬度增加量为 65.1 HV，表面显微硬度提高率为 36.7%。
                关键词：压电振子阵列；超声喷丸强化；阵列设计；显微硬度
                中图法分类号: TG178           文献标识码: A          文章编号: 1000-310X(2022)04-0578-08
                DOI: 10.11684/j.issn.1000-310X.2022.04.009





                           Ultrasonic shot peening with piezoelectric vibrator array



                                   LI Zhaoyang LI Daopeng ZHANG Weishun FU Bo


                               (School of Mechanical Engineering, Sichuan University, Chengdu 610065, China)

                 Abstract: In order to improve the working area, efficiency and quality of ultrasonic shot peening on the
                 workpiece, the traditional ultrasonic shot peening with single ultrasonic vibrator is improved. A piezoelectric
                 vibrator array ultrasonic shot peening method is proposed. The mechanism of ultrasonic shot peening is
                 analyzed. The design of vibrator array is carried out. The area distribution of the shot impacting the workpiece
                 by using experimental prototype is tested under different ultrasonic power. The influence of shot peening
                 parameters on the microhardness of the workpiece is explored. The results show that the ultrasonic shot peening
                 with piezoelectric vibrator array can effectively increase the impact area of shot peening on the workpiece, and
                 improve the surface microhardness and shot peening efficiency of the workpiece. The shot peening effect is the
                 best when the ultrasonic power is 50 W, the shot peening time is 20 min, the shot peening distance is 5 mm,
                 and the shot diameter is 1.5 mm. The surface microhardness of the workpiece is increased by 65.1 HV, and
                 the improvement rate of surface microhardness is 36.7%.
                 Keywords: Piezoelectric vibrator array; Ultrasonic shot peening; Array design; Microhardness





             2021-06-18 收稿; 2021-09-07 定稿
             四川省科技计划资助项目 (2020YFG0117), 川大宜宾战略合作专项资金项目 (2019CDYB-1)
             ∗
             作者简介: 李朝阳 (1997– ), 男, 四川南充人, 硕士研究生, 研究方向: 机械制造及其自动化。
              通信作者 E-mail: bofu@scu.edu.cn
             †
   75   76   77   78   79   80   81   82   83   84   85