摘要
焊接作为预应力钢筒混凝土管(prestressed concrete cylinder pipe, PCCP)钢筒加工的主要技术,焊接工艺控制参数直接影响焊缝质量,进而影响PCCP应用性能.故确定PCCP钢筒最优焊接工艺参数尤为重要,基于现场采集数据和改进MULTIMOORA方法,以焊缝特征指标为评价依据,对螺旋焊接工艺进行综合优选.首先获取并整理各指标数据,将各指标转化为多属性决策问题,通过评价指标数据,定义权重因子用来分配优先级,量化指标,根据优化原则对方案进行排序,过程采用OWA算子和熵权法消除主观评价值中极端值影响,得到指标综合权重,进行决策排序优选,最后利用占优理论对焊接控制工艺技术参数进行最终评价.结果表明,PCCP钢筒最优焊接工艺参数为焊接电流340 A、电弧电压为24 V、焊接速度为10.81 mm/s,以期为PCCP钢筒焊接工艺提供技术参考.
Welding is the main technology for the processing of prestressed concrete cylinder pipe(PCCP) steel cylinder,welding process control parameters directly affect the quality of weld seams, which in turn affects the performance of PCCP applications. It is particularly important to determine the optimal welding process parameters of PCCP steel cylinder, and the spiral welding process is comprehensively optimized based on the method based on field data acquisition and improved MULTIMOORA method, based on weld characteristic index.Firstly, the data of each index is obtained and sorted, the indicators are converted into multi-attribute decision-making problems, through the evaluation of the index data, the weight factor is defined to allocate the priority, the index is quantified,the scheme is sorted according to the optimization principle,the process adopts the OWA operator and entropy weight method to eliminate the extreme value influence of the subjective evaluation value, the index comprehensive weight is obtained, the decision ranking is optimized, and finally the technical parameters of the welding control process are finally evaluated by using the dominant theory. The results show that the optimal welding parameters of PCCP steel tube are welding current 340 A, arc voltage 24 V and welding speed 10.81mm/s, which can provide technical reference for PCCP steel tube welding process.
作者
郭磊
李思豪
郭利霞
王军
陈平平
朱建涛
GUO Lei;LI Sihao;GUO Lixia;WANG Jun;CHEN Pingping;ZHU Jiantao(North China University of Water Resources and Electric Power,Zhengzhou,450046,China;Henan Water Valley Research Institute,Zhengzhou,450046,China;Henan Key Laboratory of Water Environment Simulation and reatment,Zhengzhou,450002,China;Henan Fuchen Pipe Industry Co.,Ltd.,Xinxiang,453400,China;Fanxian Water Conservancy Bureau of Henan Province,Puyang,457500,China)
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2022年第3期74-79,I0007,I0008,共8页
Transactions of The China Welding Institution
基金
河南省自然科学基金资助项目(202300410270)。
