机械科学与技术2018，Vol.37Issue(7)：1115-1119,5.DOI:10.13433/j.cnki.1003-8728.2018.0716
SPCC胶接点焊胶层气体的排出及超声C扫检测分析
Gas Discharge and Ultrasonic C Scanning Analysis of SPCC Adhesive Spot Welding Layer
摘要
Abstract
SPCC sheet resistance spot welding adhesive joint was prepared and tensile shear test was carried out.The Euler-Lagrange analysis model for adhesive spot welding joint is established to extract the pressure time curve of each test point at the interface of adhesive layer,and the effect of the heating and gasification process on the weld pool is analyzed.At the same time,the ultrasonic C scanning imaging test was carried out on the spot welding joint of SPCC plate with the ultrasonic water immersion focusing method.The features of nugget area were analyzed by A scanning signal and C scanning image.The results show that the average tensile strength of the adhesive joint and the spot welded joint are 10 518.325 N and 10 164.421 N respectively,and the strength of the spot welded joint is improved by adding the adhesive layer.In the bonding process,the high pressure gas from the adhesive layer is discharged from the gap between the upper and lower plates and leaves the cavity area around the weld core after the gas is discharged.Based on the characteristics of ultrasonic C scanning images,the adhesively bonded joints are divided into the conductive adhesive zone,the cavity region after the gasification of the adhesive layer,and the nugget region.The results of the test is in an agreement well with the simulated.关键词
SPCC/胶接点焊/拉伸-剪切试验/AUTUDYN/超声波C扫描Key words
SPCC/bonding spot welding/tensile shear test/AUTUDYN program/ultrasonic C scanning分类
矿业与冶金引用本文复制引用
韦涛,曾凯,冯煜阳,肖智杰,吴万平..SPCC胶接点焊胶层气体的排出及超声C扫检测分析[J].机械科学与技术,2018,37(7):1115-1119,5.基金项目
国家自然科学基金项目(51565022)资助 （51565022）
