【摘要】 结合多次现场试验及施工实践,分析研究了化工用低合金钢设备制作焊接中的致命缺陷即弧波裂纹(近年来提出的新概念)的形态特征、产生原因和运行规律,及其主要的影响因素。为合理制定设备防裂止裂对策提供了依据。另外,就如何提高一次焊接合格率及返修成功率提出了有针对性的见解。更多还原

【Abstract】 Combined with practical experiments and construction,this paper analyses the grave welding defect,which is called as arc-wave welding cracks,during the producing process of industrial low-alloy steel equipments,referring to the characteristics,producing causes,rules and main affects,which supplies suggestion for adopting reasonable countermeasures for welding defects. Also,some pertinence opinions about improving welding quality by only once welding are put forward in this paper.更多还原