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Study on Resistance Welding of Composite Damping Steel Plates

Author: GaoZhongFu
Tutor: LiuXiuZhong；ZhangChunBo
School: Shandong University
Course: Materials Engineering
Keywords: Composite damping steel plates spot welding electrode tip in-between resinous layer accessorial electric structure
CLC: TG453.9
Type: Master's thesis
Year: 2009
Downloads: 29
Quote: 0
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Abstract

This thesis mainly on composite damping vibration plates esistance with spot welding is studied. Accessorial electric structure is designed, distribution of current and change of resistance are analyzed in spot welding. Research and analysis on the shape of electrode tip, the results indicated that using rotundity electrode tip can get good round, flat electrode using solder will cause welding defects such as organization slag, Influences of spot welding parameters on size, performance, rupture of welding point and tissues in fusion area are studied by means of ordinal spot welding. The results show that except abruption capability of the first welding spot is worse, there is not difference with regard to that of the second welding spot and subsequent welding spots; abruption position and tissues in fusion area are similar in first and second welding points.During spot welding, length(L), position, range of under-fusion area of resinous layer and change of tissues, component near resinous layer are researched. The results show that L of under-fusion decreases and ardened range of under-fusion area increases with aggrandizement of welding heat, delay of welding time and decrease of electrode press. Positions of under-fusion area are far from center of welding spot and distributions of under-fusion area are more symmetrical to center of welding spot with aggrandizement of welding heat, electrode press and delay of welding time. At the same time, under a certain electrode press, of same position of the second welding spot not only joints more closely, but also the ardened area disappears with aggrandizement of welding heat, delay of welding time.

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Welding, metal cutting and metal bonding > Welding process > Pressure welding > Other pressure welding
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