Authors: Wang ChenyuWangmin
Publish Date: 2013/02/07
Volume: 49, Issue: 1-2, Pages: 39-41
Abstract
A group of projection welding experiments and joints tensionshear tests are carried out for coldrolled steel sheets galvanized steel sheets GSS without treatment GSS with phosphate and GSS with surface greasing respectively The experimental results are regression analysed on the computers then the projection welding joint tensionshear strength curve and the perfect welding currents range of each material are obtained The results show that surface treatments of galvanized steels have effects on their spot weldabilities Among the four kinds of materials GSS with surface greasing have the worst spot weldability for they need higher welding currents and have a narrow welding current range
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