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在制造压力容器时,每台压力容器需制备焊接试板,用以检验该容器焊缝的性能。我厂在做A3钢板焊接的容器的焊缝机械性能试验时,发现冷弯不合格的情况较多。在这些不合格冷弯试样中,问题大多出现在焊缝与母材的交界处。为此,我们对不合格的试样进行分析讨论。一、分析不合格原因 1.板材情况 A3钢板属于普通碳素钢,它在化工、石油行业中已广泛用作常、低、
In the manufacture of pressure vessels, each pressure vessel shall be prepared by welding test panels to verify the performance of the vessel’s weld. I plant A3 steel plate welding machine to do the mechanical properties of the weld test and found more cases of unqualified cold-rolled. In these non-conforming cold-bend specimens, most of the problems occurred at the junction of the weld and the parent material. To this end, we analyze the failure of the sample. First, the analysis of the reasons for failure 1. Sheet A3 steel plate is a common carbon steel, it is in the chemical industry, the oil industry has been widely used as a regular, low,