Abstract��It aims to analyze the cracks by two different kinds of auto girder molding, welding molding and extrusion moulding. Causes for two kinds of cracks were found out using chemical composition, low and high microscope. Then prevention and improvement measures were made to guide customers to improve the material selection of beam and welding wire, as well as the welding technology. And fatigue property match was made so that the beam welding crack could be controlled and eliminated efficienly.
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ZHANG Ming-jin. Auto Girder Welded Crack Analysis and Prevention. Chinese Journal of Iron and Steel, 2012, 30(5): 51-55.
2012, Vol. 30 
