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Electrodes for Shielded Metal Arc Welding

机译：屏蔽金属电弧焊电极

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摘要

Two deposited metal test assemblies, as indicated in 2-A2-2/Figure 1, are to be welded in the flat position, one using 4 mm (5/32 in.) electrodes or the smallest size manufactured, whichever is greater, and the other using the largest size manufactured. If an electrode is produced in one size only or if the largest size produced is 4 mm (5/32 in.) or less, one test assembly is sufficient. The weld metal is to be deposited in single or multi-run layers according to normal practice, and the direction of deposition of each layer is to alternate from each end of the plate, each run of weld metal being not less than 2 mm (5/64 in.) and not more than 4 mm (5/32 in.) thick. Between each run, the assembly is to be left in still air until it has cooled to less than 250°C (482°F), but not below 100°C (212°F), the temperature being taken in the center of the weld, on the surface of the seam. After being welded, the test assemblies are not to be subjected to any heat treatment, except hydrogen removal, as permitted in 2-A2-1/15.3.
机译：如图2-A2-2 /图1所示，应将两个熔敷金属测试组件焊接在平坦位置，一个使用4毫米（5/32英寸）焊条或所制造的最小尺寸（以较大者为准）进行焊接，以及另一个使用制造的最大尺寸。如果仅以一种尺寸生产电极，或者如果生产的最大尺寸为4毫米（5/32英寸）或更小，则一个测试组件就足够了。焊缝金属应按照常规惯例沉积为单层或多层，每层的沉积方向应与板的两端交替，每段焊缝不少于2 mm（5 / 64英寸）且厚度不超过4毫米（5/32英寸）。在每次运行之间，应将组件放置在静止的空气中，直到组件冷却至低于250°C（482°F），但不低于100°C（212°F）为止，温度取自组件的中心。焊缝表面上的焊缝。焊接后，除了2-H2-1 / 15.3允许的除氢措施外，测试组件不得进行任何热处理。

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