数字焊机埋弧焊接工艺参数优化  

Parameter Optimization of Digital Welding Machine on Submerged Arc Welding Process

作　　者：李慧 唐子金 曾德胜 LI Hui;TANG Zijin;ZENG Desheng(Shashi Steel Pipe Branch Company,Sinopec Petroleum Machinery Co.,Ltd.,Jingzhou 434001,Hubei,China)

机构地区：[1]中石化石油机械股份有限公司沙市钢管分公司,湖北荆州434001

出　　处：《焊管》2023年第3期41-46,52,共7页Welded Pipe and Tube

摘　　要：为适应智能化制造的发展趋势,提高对数字焊机的焊接性能研究水平,建立了数字焊机管线钢埋弧焊工艺参数数学模型并验证分析。结果表明,当焊缝面能量100 J/mm^(2)<Q≤220 J/mm^(2)、内外焊焊缝重合量1.5 mm≤e≤3.0 mm、焊缝余高0.5 mm≤δ≤2.5 mm时,数学模型的计算结果与实际生产情况相符合。此外,根据数学模型规范计算热输入量Q,并与标准要求进行对比,冲击试验后发现,即使焊接过程中的热输入量较大,焊缝冲击功仍符合标准要求,焊缝的冲击韧性较好。该方法在提高工艺设计效率的同时降低了生产成本,并保证了钢管的生产质量,为数字化焊机在钢管焊接过程中的工艺参数优化提供参考。In order to adapt to the development trend of intelligent manufacturing and improve the research level of welding performance of digital welding machine,a method of establishing and optimizing the process parameter model of digital welding machine on SAW(Submerged Arc automatic Welding)steel pipe is introduced,and the mathematical model in the actual production process is verified.The results show that when the weld surface energy is 100 J/mm^(2)<Q≤220 J/mm^(2),the overlap of internal and external welds is 1.5 mm≤e≤3.0 mm and the weld reinforcement is 0.5 mm≤δ≤2.5 mm,the calculation result of the mathematical model is consistent with the actual production situation.In addition,the heat input Q is calculated according to the mathematical model specification and compared with the standard requirements.After the impact test,it is found that even if the heat input during the welding process is large,the impact energy of the weld is not high,and the impact toughness of the weld is good.This method not only improves the efficiency of process design,but also reduces the production cost,and ensures the production quality of steel pipe.It provides a reference for the optimization of process parameters of digital welding machine in the process of steel pipe welding.

关 键 词：数字焊机 埋弧焊 焊缝坡口 冲击功 

分 类 号：TG457.6[金属学及工艺—焊接]