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为解决电站储罐地脚螺栓性能评估难题,从42Cr Mo E高强螺栓端部截取小块试样,选用电子束焊接进行试样重组,研究不同插入段长度对重组试样冲击性能影响。结果表明,电子束焊接能够实现高强螺栓42Cr Mo E合金钢的试样重组,焊接质量优异;插入段长度对塑性变形区没有明显影响,塑性变形宽度为12 mm;综合考虑插入段长度对冲击性能影响,推荐最小插入段长度为20 mm。
In order to solve the problem of assessing the performance of anchor bolts in power plant storage tanks, a small sample was taken from the end of 42Cr Mo E high-strength bolt and the sample was recombined by electron beam welding to study the impact of different insertion lengths on the impact properties of the recombinant sample. The results show that the electron beam welding can reorganize the sample of high strength bolt 42Cr Mo E alloy steel, and the welding quality is excellent. The insertion length has no obvious influence on the plastic deformation zone and the plastic deformation width is 12 mm. Considering the effect of insertion length on the impact performance Effect, the recommended minimum insertion length is 20 mm.