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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers, Part E. Journal of Process Mechanical Engineering >Weld bonding process analysis for tensile shear strength and peel strength of weld bonded joints of dissimilar steel sheets
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Weld bonding process analysis for tensile shear strength and peel strength of weld bonded joints of dissimilar steel sheets

机译：不同钢板焊接接头拉伸剪切强度和剥离强度的焊接粘接工艺分析

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摘要

Evaluating the strength performance of resistance spot welded joints in dissimilar material is critical for their continued integration into the automobile and aerospace industries. The effect of joint strength is an important consideration in the design of welded structures. The aim of this paper is to evaluate the effect of the welding process parameters (welding current, weld time, and electrode pressure) on the mechanical performance of dissimilar weld bonds between austenitic stainless steel 304L and low carbon steel sheets. Mechanical properties of weld bonds are described in terms of bond strength, failure mode, and hardness of the joint. Weld bonding experiments were planned on the basis of full factorial design matrix. Weld bonded joint strength tests showed that the maximum tensile shear strength and peel strength were achieved at 6.4 kA, eight-cycle weld time with 3 kg/cm(2) electrode pressure. The hardness value across the weld bonded fusion zone was not affected much with respect to varying the welding current. Pullout failure and tearing failure modes were observed during the tensile shear strength test of weld bonded joints. Application of adhesive layer at faying surfaces resulted not only in strengthening but also distributing the stress in weld bonded joints.
机译：评估不同材料抵抗点焊接接头的强度性能对于他们继续融入汽车和航空航天行业至关重要。关节强度的影响是焊接结构设计中的重要考虑因素。本文的目的是评估焊接工艺参数（焊接电流，焊接时间和电极压力）对奥氏体不锈钢304L和低碳钢片之间不同焊接粘合的机械性能的影响。焊接键的力学性能在接头的粘合强度，故障模式和硬度方面描述。根据完整的因子设计矩阵计划焊接粘接实验。焊接粘合的关节强度试验表明，在6.4ka，八个周期焊缝时间下实现最大拉伸剪切强度和剥离强度，具有3kg / cm（2）电极压力。相对于改变焊接电流，焊接粘合融合区两端的硬度值不受影响。在焊接接头的拉伸剪切强度试验期间观察到拉伸失效和撕裂破坏模式。粘合剂层在胎盘上的应用不仅导致强化而且在焊接接头中分配应力。

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