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首页> 外文期刊>International Journal of Chemistry and Chemical Engineering >Effect of the Welding Techniques on Residual Stresses Developed in Butt Welding of AISI304 Stainless Steel Plates
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Effect of the Welding Techniques on Residual Stresses Developed in Butt Welding of AISI304 Stainless Steel Plates

机译：焊接技术对AISI304不锈钢板对接焊接焊接剩余应力的影响

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One of the most widely used permanent joining processes is welding. Welding results in a very complex thermal cycle which results in irreversible elastic-plastic deformation and residual stresses in and around fusion zone and heat affected zone (HAZ). Residual stresses may be an advantage and disadvantage in structural components depending on their nature and magnitude. The beneficial effect of compressive stresses have been widely used in industry as these are believed to increase fatigue strength of the component and reduce stress corrosion cracking and brittle fracture. In large steel fabrication industries such as shipbuilding, marine structures, aero-space industry, high speed train guide ways and pressure vessels and piping in chemical and petrochemical industry the problem of residual stresses and overall distortion has been and continue to be a major issue. It is well established fact that material response of structural components is substantially affected by the residual stresses when subjected to thermal and structural loads. Due to these residual stresses produced in and around the weld zone the strength and life of the component is reduced. As AISI 304 stainless steel has excellent properties like-better corrosion resistance, high ductility, excellent drawing, forming and spinning properties, so it is almost used in all types of application like chemical equipment, flatware utensils, coal hopper, kitchen sinks, marine equipment etc. but because of the problems of residual stresses during the time of welding it is very essential to understand the behavior and nature of this material. So in order to overcome all these problems a 3-dimensional finite element model is developed by making an approximate geometry of the butt welded joint and then the finite element analysis is performed, so that we can understand the complete nature of residual stresses in butt welded joint of AISI 304 stainless steel plate. In this paper, butt welding simulations were performed on two AISI 304 stainless steel plates by submerged arc welding (SAW), manual metal arc welding (MMAG), gas metal arc welding (GMAW) and gas tungsten arc welding (GTAW). Analysis of butt welded joint by SolidWorks simulation showed that butt weld produced by GMAW resulted in lowest value of residual stress in plates.
机译：其中一种最广泛使用的永久连接过程是焊接的。焊接导致非常复杂的热循环，导致融合区和热影响区（HAZ）中的不可逆弹性变形和残余应力。残余应力可以是结构部件的优点和缺点，这取决于它们的性质和大小。抗压应力的有益效果已广泛用于工业，因为这些据信增加了组分的疲劳强度，降低了应力腐蚀裂缝和脆性骨折。在造船，海洋结构，航空航天工业，高速列车指南的大型钢制造行业，高速列车指南和压力容器和管道中的化工和石化产业的管道存在残余的应力和整体扭曲的问题并继续成为一个主要问题。很好的事实是，当经受热和结构载荷时，结构部件的材料响应基本上受到残余应力的影响。由于焊接区域内和周围产生的这些残余应力，该部件的强度和寿命减少。由于AISI 304不锈钢具有优异的性能，如更好的耐腐蚀性，高延展性，优异的拉伸，成型和纺纱特性，因此它几乎用于化学设备，楼盘，煤料斗，厨房水槽，海洋设备等所有类型的应用。等等，但由于在焊接期间残余应力的问题，了解这种材料的行为和性质是至关重要的。因此，为了克服所有这些问题，通过制造对接焊接接头的近似几何形状来开发三维有限元模型，然后进行有限元分析，因此我们可以了解焊接焊接中残余应力的完全性质AISI 304不锈钢板联合。本文通过浸没电弧焊接（SAW），手动金属弧焊（MMAG），气金属弧焊（GMAW）和气体钨电弧焊接（GTAW）对两个AISI 304不锈钢板进行对接焊接模拟。 SolidWorks仿真分析对接焊接接头显示，通过GMAW产生的对接焊缝导致板材残余应力的最低值。

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