A high frequency coil introduces current into the tube ahead of the squeeze rolls. This current is concentrated on the edges of the strip in the V and resistance heats a narrow zone at the edges to the welding temperature. The squeeze rolls consolidate the weld by expelling any melted material and contaminants and forming a small upset bead inside and outside the tube. These beads may be immediately scarfed from the tube to give a smooth surface. Thin wall steel tube may be welded at up to a few hundred m/min.
Guangdong Shunde Seko Machinery & Technology Co.,Ltd.www.gdseko.com
Lucy Xie
sevvice@gdseko.com
Skype:Lucy Xie/Xie Xinmei
Suggested Reading: The China Map 2015 is available for purchase on our online bookshop in hard copy or PDF format. Clic
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