闪光对焊    flash butt welding (FBW)

闪光时间    flash time; flashing time

回烧    flashback

回火防止器    flashback arrestor

闪光电流    flashing current; flash current

闪光速度    flashing speed

平形角焊缝    flat fillet

平焊位置    flat position of welding

平头电极    flat tip electrode

探伤灵敏度    flaw detection sensitivity

焊接回转台    floor turnable positioner

波峰钎焊    flow soldering/ wave soldering

熔渣流动性    fluidity of the slag; slag fluidity

焊工氟中毒    fluorosis of welder

荧光探伤    flurescent penetrant inspection

削平焊缝    flush weld/ weld machined flush

钎剂活性    flux activity

焊剂垫    flux backing

药皮钎料    flux coated brazing(soldering)rod

窄间隙埋弧焊焊剂    flux for narrow-gap submerged arc welding

钎剂夹杂    flux inclusion

钎剂膏    flux paste

渣壁过渡    flux wall guided transfer

药芯钎料丝    flux-cored colder wire

管状焊条    flux-cored electrode

药芯焊丝    flux-cored wire

钎剂涂敷器    fluxer

焊剂漏斗    flux-hopper

储能摩擦焊    fly-wheel type friction welding

焦斑直径    focussed diameter of the beam

锁缝接头    folded joint

硬电弧    forceful arc/ hard arc

前倾焊    foreward welding (英国)/ forehand welding (美国)

顶锻变形量    forge length

顶锻变形速度    forge rate

锻压时间    forge-delay time; forge time

焊缝成形系数    form factor of weld

断口金相    fractography

断口    fracture

断裂分析图    fracture analysis diagram

断口形貌    fracture apperance

断口试验    fracture test