中厚板激光-电弧复合焊拼板坡口的选用  

Selecting the groove for hybrid laser arc welding butt joint of medium-thick plate

作　　者：张辉 伍道亮 师金凤 游玉强 屈江艳 ZHANG Hui;WU Daoliang;SHI Jinfeng;YOU Yuqiang;QU Jiangyan(China Merchants Heavy Industry(jiangsu)Co.,Ltd.,Nantong 226100,Jiangsu,China)

机构地区：[1]招商重工(江苏)有限公司,江苏南通226100

出　　处：《金属加工（热加工）》2024年第9期64-68,共5页MW Metal Forming

摘　　要：研究了船用中厚板采用激光-电弧复合焊拼板时,焊接坡口的选择方法。对20mm厚EH36船用钢进行焊接,对比Y形、带钝边的U形、带钝边的复合坡口3种形式的激光-电弧复合焊缝成形,以及不同钝边高度和坡口角度激光-电弧复合焊焊缝成形的差异。分析不同坡口对激光-电弧复合焊焊缝成形、坡口制备难易度、焊接层数的影响。结果表明:采用Y形、带钝边的U形、带钝边的复合坡口这3种形式进行激光-电弧复合焊,均可得到较好的激光-电弧复合焊焊缝成形。考虑坡口形式对坡口制备的难易度、对焊接层数的影响,得出Y形坡口最优。当钝边高度值相同时,若一定程度上增大坡口角度,则利于激光-电弧复合焊焊缝正面的成形。当坡口角度相同时,一定程度上降低钝边高度,利于激光-电弧复合焊焊缝反面的成形。An investigation into the selection method of welding groove shapes during hybrid laser arc welding for marine medium-thick plates is presented.Testing with 20mm thickness EH36 grade steel plate,comparing the formation differences of hybrid laser arc welds in Y-shape,and U-shape with root face,and comp ound groove with root face.Moreover,comparing the forming differences of hybrid laser arc welds with varying root face and groove angle.An analysis of the influence of different grooves on the forming of hybrid laser arc welds,and the ease of preparing grooves,and the number of welding layers is also conducted.The findings indicate that acceptable forming can be achieved by employing Y-shape,and U-shape with root face,and compound grooves with root face.Taking into account the ease of groove preparation and the number of welding layers of different gro ove form,an optimal Y-shape groove is derived.It is observed that when root face value remains constant,an increa se in groove angle to a certain extent is benefit to top formation of hybrid laser arc welds.When groove angle value remains constant,a reduction in root edge to a certain extent is benefit to back formation of hybrid laser arc welds.

关 键 词：中厚板 激光-电弧复合焊 拼板 坡口 

分 类 号：TG44[金属学及工艺—焊接]