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首页> 外文期刊>Journal of Materials Processing Technology >Ultra-narrow gap welding of thick section of austenitic stainless steel to HSLA steel
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Ultra-narrow gap welding of thick section of austenitic stainless steel to HSLA steel

机译：奥氏体不锈钢厚截面的超窄间隙焊接到HSLA钢

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A substantially narrow GMAW torch nozzle head has been designed that enables narrowing down of weld groove up to a limit of just accommodating the nozzle in it where the groove wall of thick section virtually acts as a side wall of the nozzle head to produce a narrowest possible butt welding. A model of shielding gas flow dynamics and its flow rate in case of employing newly developed GMAW nozzle head has been studied at different projection angle of torch nozzle inside the narrow groove of butt joint by using ANSYS-CFX(14.5) software. The utility aspect of such a narrow nozzle head from the view point of smooth flow of shielding gas inside a close fitted ultra-narrow weld groove has also been studied. The outcome of the analytical studies has been used to produce a defect free ultra-narrow multi-pass weld by employing P-GMAW process with vertically placed electrode depositing single bead per layer in weld groove. (C) 2016 Elsevier B.V. All rights reserved.
机译：已经设计了一种基本上窄的GMAW炬喷嘴头，其使得能够使焊接槽的缩小到仅容纳喷嘴的极限，其中厚截面的槽壁虚拟作用为喷嘴头的侧壁以产生最窄的可能性 对接焊接。 采用新开发的GMAW喷嘴头的屏蔽气体流动动力学及其流速的模型已经在割炬喷嘴内通过使用ANSYS-CFX（14.5）软件在对接接头的窄槽内的不同投影角度进行了研究。 还研究了这种窄喷嘴头的实用性方面，从屏蔽气体内部的屏蔽气体的光滑流动已经研究。 分析研究的结果已通过采用P-GMAW工艺在焊接槽中采用具有垂直放置的电极沉积单珠的垂直放置电极的P-GMAW工艺来生产缺陷的超窄多通焊缝。 （c）2016 Elsevier B.v.保留所有权利。

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