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本文对特高压交流输变电工程钢管塔工程小口径薄壁钢管与锻造带颈法兰对接环焊缝的关键焊接技术进行了详细阐述。小口径薄壁钢管与带颈锻造法兰对接环焊缝达到了外观成形美观,一次超声波检测合格率99.12%,焊接效率较手工焊或半自动焊提高2倍以上,综合焊接成本降低40%以上。
In this paper, the key welding technology of small-diameter thin-walled steel pipe for the steel pipe tower project of UHV AC power transmission and transformation project and the butt-welded ring flange forged with neck are described in detail. Small-diameter thin-walled steel pipe and neck forged flange butt welds to achieve the appearance of beautiful appearance, an ultrasonic test pass rate of 99.12%, the welding efficiency than manual welding or semi-automatic welding increased more than 2 times, reducing the cost of welding more than 40%.