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针对目前胶焊技术研究的不足,对Q235薄钢板胶焊工艺进行了研究。通过加入铝粉来解决胶粘剂导电性的问题,设计正交试验,研究胶粘剂中铝粉加入量及焊接电流、焊接时间对接头抗拉强度和熔核尺寸的影响。结果表明:焊接电流对胶焊接头性能影响最大;随着胶粘剂中铝粉含量及焊接电流、焊接时间的增加,胶焊接头抗拉强度及熔核尺寸均呈现先增大后减小的趋势。当胶粘剂中铝粉含量为1.2g、焊接电流为5kA、焊接时间为2周波时,Q235薄钢板胶焊接头性能最好。
In view of the lack of research on the current welding technology, the Q235 thin steel plate welding technology was studied. By adding aluminum powder to solve the problem of conductivity of the adhesive, orthogonal test was designed to study the amount of aluminum powder in the adhesive and welding current, welding time on the joint tensile strength and nugget size. The results show that the welding current has the greatest effect on the performance of the adhesive bonding. With the increase of the aluminum content, the welding current and the welding time, the tensile strength and the nugget size of the adhesive bonding firstly increase and then decrease. When the content of aluminum powder in the adhesive is 1.2g, the welding current is 5kA and the welding time is 2 cycles, the performance of the Q235 steel plate welded joint is the best.