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本文描述了某锅炉厂在制造9.8MPa高压锅炉汽包过程中关键工艺替代技术所进行的研究。该锅炉汽包因材料特殊、壁厚大、焊接难度较大、焊接应力大,易产生焊接裂纹,同时,要检出这种厚壁的对接焊缝及角焊缝当中可能存在的焊接缺陷,无损检测难度也很高,经过研究论证,采取了相应的焊接和检测替代工艺措施,有效的控制了焊接缺陷的产生,提高了无损检测对于焊接缺陷的检出率,保证了产品质量。
This article describes a boiler plant in the manufacture of 9.8MPa high-pressure boiler drum process key technology replacement technology carried out by the research. The boiler drum due to special materials, large wall thickness, welding more difficult, welding stress is large, easy to produce welding cracks, at the same time, to detect such thick-walled butt weld and fillet welds which may exist in the welding defects, Non-destructive testing is also very difficult, after research and feasibility studies, taken the appropriate welding and testing alternative process measures to effectively control the welding defects, improve the detection rate of non-destructive testing for welding defects, to ensure product quality.