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1、DCEN：directcurrentelectrodenegative(DCEN).直流电极接负，工件接正，称直流正接DCEP:Directcurrentelectrodepositive(DCEP).直流电极接正,T件接负，称直流反接脉冲喷射电弧pulsedsprayarc起皱现象puckeringphenomena起级电弧puckeringarc起皱临界电流puckeringcriticalcurrent间接电弧indirectarc压缩电弧compressivearc磁控电弧magneticcontrollingarc电弧力arcforce电磁力electromagnecticforce

2、电磁收缩效丿、Vpincheffect电弧飘移wanderingofarc电弧稳定性arcstability电弧静特性staticcharacteristicofarc电弧动特性dynamiccharacteristicofarc最小电丿+(原理principleofminimumvoltage电弧挺度arcstiffness电呱偏吹arcblow磁偏吹magneticblow阴极清理作用cleaningactionofthecathode电弧自身调节arcself-regulation挖掘作用diggingaction极性效应polarityeffect熔滴droplet熔滴比表血积spec

3、ificsurfaceofdroplet熔滴过渡metaltransfer过度频率transitionfrequency商过渡globulartransfer;droptransfer短路过渡shortcircuit!ngtransfer喷射过渡spraytransfer旋转喷射过渡rotatingspraytransfer脉冲喷射过渡pulsedspraytransfer爆炸过渡explosivetransfer渣壁过渡fluxwallguidedtransfer熔池moltenpool沸腾状熔池boilingmoltenpool弧坑crater熔渣slag渣系slagsystem渣系相图s

4、lagsystemdiagram碱性逬basicslag酸性渣acidslag碱度basicity酸度acidity长渣longslag知•渣shortslag粘性熔渣viscousslag氧化物型熔渣oxidemeltingslag盐型熔渣saltmeltingslag盐•氧化物型熔渣salt-oxidemeltingslag熔渣流动性fluidityoftheslag;slagfluidity熔渣solidifiedslag多孔焊渣porousslag玻璃状焊渣vitreousslag口动脱落焊渣self-releasingslag脱渣性slagdetachability焊接设备weldi

5、ngequipment;weldingset焊机weldingmachine;welder电焊机electricweldingmachine;electricwelder焊接电源weldingpowersource焊接热循环weldthermalcycle焊接温度场fieldofweldtemperature;weldtemperaturefield准稳泄温度场quasi-stationarytemperaturefield焊接热源weldingheatsource点热源pointheatsource线热源linearheatsource而热源planeheatsource瞬时集中热源inst

6、antaneousconcentrationheatsource热效率thermalefficiency热能集中系数coefficientofheatflowconcentration峰值温度peaktemperature瞬时冷却速度momentarycoolingrate冷却时间coolingtime當换氧化substitutionaryoxydation扩散氧化diffusibleoxydation脱氧desoxydation先期脱氧precedentdesoxydation扩散脱氧diffusibledesoxydationj冗淀丿J兑氧precipitationdesoxydation

7、扩散氢diffusiblehydrogen初始扩散氢initialdiffusiblehydrogen100°C残余扩散氢diffusiblehydrogenremainedat100°C残余氮residualhydrogen去氢dehydrogenation去轼热处理heattreatmentfordehydrogenation月兑嶄idesulphurization脱磷dephosphoriz