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首页> 外文期刊>WRI Journal: Journal of the Welding Research Institute >Analysis and control of distortion during welding of weld pads on spiral wall panels of OTSC boilers
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Analysis and control of distortion during welding of weld pads on spiral wall panels of OTSC boilers

机译：OTSC锅炉螺旋壁板焊接垫焊接变形的分析与控制。

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摘要

Spiral wall panel form the sides of the furnace in supercritical boilers as against the conventional straight wall panels in case of subcritical boilers. This panel consists of flat fin welded to tubes that are further welded with sets of weld pad matrices placed at discrete locations along the length of the panel. Weld pads are used as the load bearing structural members of the component during final assembly. The total length of weld pad matrix ranges from 5000 to 8000 mm while the total length of panels is over 20 m. A fillet size of 4 mm was required for welding the weld pads. Hence, the welding of weld pad requires huge quantum of metal deposition on one side of the panel leading to a localized longitudinal bow of the panel after welding. This requires a laborious post corrective operation to straighten the panel.
机译：在亚临界锅炉中，螺旋壁板形成了超临界锅炉炉膛的侧面，而传统的直壁板则形成了壁垒。该面板由焊接到管子上的扁平散热片组成，再将其与沿面板长度放置在不连续位置的多组焊垫矩阵焊接在一起。焊垫在最终组装期间用作组件的承重结构构件。焊垫基体的总长度为5000至8000 mm，而面板的总长度则超过20 m。焊接焊盘要求填角尺寸为4 mm。因此，焊接垫的焊接需要在面板的一侧上大量的金属沉积，从而导致焊接后面板的局部纵向弯曲。这需要费力的后校正操作来矫正面板。

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