CO2焊短路液桥的力学分析.pdf

奄珲拽 No．3 第34卷第3期 m34 型竺!旦坠些些些 坠型 ⑥◎霪獬簸臻瀛撩麟麴|学努柝 杨立军k2，李桓1，李俊岳1，郑振太1’2 f1．天津大学，天津300072；2．河北工业大学，天津300132) 摘要：分稀了_颊-路液桥昀嬖办、寡面张力、电磁救缩力、气体爆破力、粘滞力的特点及其对短路过渡 过程的影响。耨出表面豢力垂电磁收缩力是短路过渡过程中的主要作用力，短路液桥的建立、失稳及 破断等物理瓤象岛表两糕纛秘蘑磁收缩力密切相美。一般情况下，表面张力促进熔滴过渡，电磁收缩力 蹿熔漓过渡的影响剃与箍瑶海j》!}!的形态有是。 篝键漏：co，辉；短路液轿；纛霹张力；电磁城缩力；穗寒性 i：¨ 中图分类萼：TG4死035变献标识鹤：A ofshort Mechanics circuit for analysis liquidbridgeC02 welding YANG LI Zhen-tall。2 Huanl，LIJun—yuel，ZHENG Li-junl,2 _ (1．TianjinUniversity，Tianjin300072，China；2．HebeiUniversityofTechnologyofTechnology，Tianjin 接 糕 Al∞traet：nais characteristicsofseveralforcessuchas and paperanalyzesthatthe surfacetension，electromagnetic 基 ateacton outthatthetwo arethemainforcestomake whichhave shortcircuit former transfer viscosity liquidbridge．Itpoints drofdet l closerelationwith and ofshortcircuit tension formation，destabilization break—up liquidbridge．Generally．surfaceconstantlypromotes l transfer．but of forceisassociatedwiththe ofshortcircuit droplet theaction o electromagneticpinch shape liquidbridge． 9 circuit