The Development and Experimental Research on Rare-earth Giant Magnetostrictive Ultrasonic Transducer
According to the technical requirements of ultrasonic surface strengthening,ultrasonic transducer based on rare-earth giant magnetostrictive materials was designed.The whole structure of the transducer was designed.Modal analysis is made to get the natural frequency of the compound oscillator.The working frequency of the transducer should be guaranteed at about 15.7 kHz or 24kHz,and the composite oscillator will have relatively better vibration mode.The magnetic field of the transducer is well sealed and the transducer does not show obvious magnetic flux leakage phenomenon.This proves the rationality of structural design.Based on this transducer,the ultrasonic surface strengthening experiment on 40 steel was conducted.The surface roughness and hardness of the parts were analyzed after the experiment.The results showed that the surface of the parts reach the mirror surface result after the ultrasonic strengthening.Compared to the previous process,the roughness decreased by about 65%,and the surface hardness was increased by about 20%.
Rare-earth Ultrasonic transducer Ultrasonic surface strengthening Roughness Hardness
FANG Shanxiang ZHANG Qinjian ZHAO Huiling YU Jingzhou CHU Yongchen
School of Mechanical,Electronic and Control Engineering,Beijing Jiaotong University,Beijing 100044,C CRRC Qingdao Sifang Co.,Ltd.,Qingdao,Shandong 266111,China
国际会议
第十七届国际制造会议(The 17th International Manufacturing Conference in China)(IMCC 2017))
深圳
英文
1-13
2017-11-23（万方平台首次上网日期，不代表论文的发表时间）