Influence of crack source welding method on drop weight NDT temperature
The influence of crack source weld bead welding methods on the drop weight NDT temperature was studied using the drop weight testing machine and optical microscope.Different heat dissipation methods,different magnitudes of welding current,different weld bead lengths,and different weld bead widths were selected and investigated.The results showed that the heat dissipation method and welding current had a significant influence on the drop weight NDT temperature,while the length and width of weld bead had no significant impact.Meanwhile,the melting depth,the area of heat affected zone,and the area of coarse grain zone were the essential reasons to affect the drop weight NDT temperature.
heat dissipation methodwelding currentweld bead lengthweld bead widthdrop weight NDT temperaturemelting deptharea of heat affected zone and coarse grain zone
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