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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 13    No. 2    April 2003

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Ultrasonic seam welding technologies of 
copper plate and tube for collecting solar energy
TANG Yong(汤 勇), WAN Zhen-ping(万珍平), 
LIU Ya-jun(刘亚俊), LIU Shu-dao(刘树道)

Institute of Mechanical Engineering, 
South China University of Technology, Guangzhou 510640, China

Abstract:The ultrasonic welding is applied more and more extensively due to its advantages such as environmental protection, cleaning and energy saving. By researching the mechanism on ultrasonic seam welding of copper plates and tubes for collecting solar energy, it is put forward that the ultrasonic metal welding process can be divided into two stages, and two factors make functions jointly to join the welded metal specimens. In order to successfully join the welding, three basic conditions must be satisfied, that is, there should be high frequency friction vibration in the contact interface; pressure must be imposed on the plate specimen during friction vibration; the time of friction vibration and pressure imposed should be proper. Furthermore, how to select the hardness of copper plate and tube and ultrasonic seam welding parameters is analyzed by experiments. 

 

Key words:  ultrasonic seam welding; friction vibration; atoms permeating 

ISSN 1672-7029
CN 43-1423/U

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