calculate the expantion of steel bar 2,5 long if its temperature rises from 20 degrees to 250 degrees and its co effient of expantion is 0,000011 mm degrees
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Why Slag comes on top of weld bead & if ur answer is related to density then think of overhead welding if slag is ligter than weld metal then in overhead welding firstly a laye of slag & then a layer of weld metal must be deposited.
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