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对两种不同级别的深冲钢冷轧薄板进行了高速压平缝焊焊接试验。试验考察了不同焊接工艺参数、热处理状态下接头的组织性能及高、中温力学行为。结果表明，接头焊态组织可分母材纤维组织区、部分再结晶区、细晶区、粗晶区及熔核中的非平衡组织区；连续退火后显微组织可分为细晶区、粗晶区及非平衡组织区；接头焊态强度主要受内部飞溅及熔合不足等焊接缺陷的影响；焊态强度较高的接头，在高、中温状态及退火状态下其强度亦较高；当不含焊接缺陷时，再结晶态接头的强度高于母材，断口处于母材，属韧性断裂；而未再结晶态的接头强度低于母材，断口处于焊趾处，属脆性断裂。
Two kinds of deep drawing cold-rolled sheet of different grades were tested by high-speed flat seam welding. The effects of different welding process parameters, microstructure and mechanical properties of joints under heat treatment were investigated experimentally. The results show that the welded joint microstructure can be divided into the fiber zone, the partial recrystallization zone, the fine grain zone, the coarse grain zone and the non-equilibrium zone in the nugget. After continuous annealing, the microstructure can be divided into fine grain zone, Crystalline zone and unbalanced microstructure zone. The welded joint strength is mainly affected by welding defects such as internal splashing and insufficient fusion. Joints with higher welding strength have higher strength under high, medium and annealed conditions. When not In the case of welding defects, the strength of the recrystallized joint is higher than that of the base metal, and the fracture is in the base metal and belongs to the ductile fracture; while the strength of the non-recrystallized joint is lower than that of the base metal, the fracture is in the weld toe and is a brittle fracture.