ISSN: 1003-6326
CN: 43-1239/TG
CODEN: TNMCEW

Vol. 27    No. 1    January 2017

Flexible die drawing of magnesium alloy sheet by superimposing ultrasonic vibration
Miao-yan CAO1, Jian-chao LI2, Ya-ning YUAN2, Chang-cai ZHAO2
(1. National Engineering Research Center for Equipment and Technology of Cold Strip Rolling,
Yanshan University, Qinhuangdao 066004, China;
2. Key Laboratory of Advanced Forging & Stamping Technology and Science, Ministry of Education,
Yanshan University, Qinhuangdao 066004, China
)
Abstract: Combining solid granule medium forming technology with ultrasonic vibration plastic forming technology, ultrasonic vibration granule medium forming (UGMF) technology was proposed. To reveal the effect of ultrasonic vibration on flexible-die deep drawing, an ultrasonic vibration with a frequency of 20 kHz and a maximum output of 1.5 kW was on the solid granule medium deep drawing of AZ31B magnesium alloy sheet. The results revealed that ultrasonic vibration promotes the pressure transmission performance of the granule medium and the formability of the sheet. The forming load declines with the ultrasonic amplitude during the drawing process as a result of the combined influence of the “surface effect” and the “softening” of the “volume effect”.
Key words: ultrasonic vibration; magnesium alloy sheet; deep drawing; solid granules
Superintended by The China Association for Science and Technology (CAST)
Sponsored by The Nonferrous Metals Society of China (NFSOC)
Managed by Central South University (CSU)