焊接英语考试试题及答案

焊接英语考试试题及答案

一、单项选择题（共30题，每题1分）请从每题四个选项中选择最恰当的一项The process of joiningmetals byheating themto themeltingpoint,with or without pressure,and withorwithoutfillermetal is called______.A.welding B.cutting C.forming D.castingWhich of the followingis NOTa commonarc weldingprocessA.MIG B.TIG C.SMAW D.Oxy-acetyleneThe electrodein SMAW is typicallymade of______.A.steel B.aluminum C.flux coreD.non-consumableWelding fumerefers to______.A.the heatgenerated duringwelding B.the gasreleasedfrom moltenmetalC.the sparksproduced bythe arcD.the soundof theweldingprocessThe voltagein awelding circuitmainly affectsthe______.A.penetration depthB.travel speedC.bead widthD.cooling rateWhichterm describes the anglebetween the electrode andtheworkpiece in weldingA.Work angleB.Torch angleC.Joint angleD.Gap anglePPEin weldingsafety standsfor______.A.Personal ProtectiveEquipment B.Professional ProtectionElements第1页共11页C.Practical ProtectionEquipments D.Process ProtectionEngineeringThe main functionof flux in submergedarc weldingis to______.A.provide heatB.protect the weld poolfrom air C.increase travel speed D.reduce electrodeconsumptionAluminum alloysare oftenwelded using______to preventoxidation.A.argon gasB.oxygen gasC.nitrogen gasD.hydrogen gasAmperagerefers to the______in anelectrical circuit.A.voltage B.current C.resistance D.powerThe minimumdistance betweenthe electrodetip andtheworkpiece inMIG weldingis called______.A.arc length B.joint gapC.travel distanceD.penetration depthWhichwelding defectis causedby incompletefusion betweenweldmetal and base metalA.Porosity B.Incomplete jointpenetration C.Crack D.Burn-throughThe rootpass inpipe weldingis the______.A.first layerof weldmetal B.final layerof weldmetalC.middle layerof weldmetal D.heat-affected zonePreheatis usedto______in welding.A.increase coolingrate B.reduce therisk ofcold cracking第2页共11页C.speed upthe weldingprocess D.improve theappearance ofthe weldIn GMAW,the wirefeed speedprimarily affectsthe______.A.voltage B.current C.travelspeedD.bead heightHAZ in weldingterminology means______.A.Heat-Affected ZoneB.High-Amperage ZoneC.Hardness AssessmentZone D.Hot ApplicationZoneWhich of the followingis atype ofnon-destructive testingNDTfor weldsA.Tensile testB.Impact testC.Radiographic testD.Bend testTheterm weavebead refers to______.A.a beadwith azigzag patternB.a beadwith excessivepenetrationC.a beadwith anarrow widthD.a beadwith smoothsurfaceBack gougingin weldingis doneto______.A.increase the weld strengthB.remove defectsfrom therootsideC.speed upthe weldingprocess D.improve theappearance ofthe weldThe amperageand voltagein awelding machineare relatedtothe______of the arc.A.lengthB.stability C.heat outputD.gas flowWhichfiller metal is commonlyused for welding stainlesssteel第3页共11页A.ER308B.ER70S-6C.ER5356D.ER80S-B2Cold lapin weldingis a defect causedby______.A.overlapping moltenmetal B.insufficient fusionC.excessive heat input D.lack offiller metalTheprocess ofremoving oil,rust,or paintfrom theworkpiecebefore weldingiscalled______.A.cleaning B.preparation C.fluxing D.preheatingTravel speedin weldingis measured in______.A.inches perminute B.volts perinch C.amps perinch D.mm persecondWhich gasmixture isoften usedfor weldingaluminum alloysA.Argon+helium B.Oxygen+acetylene C.Nitrogen+hydrogen D.Carbon dioxide+argonFillet weldis usedto join______.A.butt jointsB.lap jointsC.edge jointsD.pipe jointsTheheatinputin weldingis affectedby______.A.current,voltage,and travelspeed B.electrode typeandjoint designC.atmospheric temperatureD.filler metaldiameterStickout inMIG weldingreferstothe______.A.length ofthe electrodeextending fromthe contacttip B.distance betweenworkpiecesC.angle oftheelectrodeD.thickness ofthe weld beadWhich termdescribestheprocessofjoining twometals withacontinuous,rounded weld第4页共11页A.Fillet weldB.Butt weldC.Plug weldD.Slot weldPost-weld heattreatment PWHTis usedto______.A.increase the welding speedB.relieve internalstressesC.improve the weld appearanceD.reduce theneed forfillermetal

二、多项选择题（共20题，每题2分）每题至少有两个正确选项，多选、少选、错选均不得分Common types of arc welding processesinclude______.A.SMAW B.GMAW C.TIG D.Oxy-fuel E.FCAWWhich ofthe following are includedin theweldingparametersA.Current B.Voltage C.Travel speedD.Electrodediameter E.Gas flowPPErequired inwelding operationstypically includes______.A.Welding helmetB.Leather glovesC.Welding jacketD.Safety shoesE.EarplugsCommon causesof weldingdefects include______.A.Excessive heatinput B.Inadequate cleaningC.Incorrectjoint designD.Proper fillermetal selectionE.Skill levelof thewelderWhichofthe followingaretypesofbutt jointpreparationsA.Square buttB.V-groove C.U-groove D.J-groove E.LapjointIn TIG welding,thearcis stabilizedby______.第5页共11页A.The electrodeB.The fillermetal C.The shielding gasD.The workpieceE.The torchWelding fume containsharmful substancessuch as______.A.Iron oxidesB.Manganese C.Silicon dioxideD.Carbondioxide E.NitrogenCommon typesof weldingpositions include______.A.Flat B.Horizontal C.Vertical D.Overhead E.InclinedWhich ofthe followingare advantagesof MIG weldingA.High depositionrate B.Easy toautomate C.No fluxneededD.Suitable forthick materialsE.Can be used onall metalsWeldingsymbols typicallyinclude______.A.Fillet weldsymbol B.Butt weldsymbol C.Groove weldsymbolD.Size ofweld E.Welding processCommonfiller metalsused inwelding include______.A.ER70S-6B.ER308C.ER5356D.E7018E.H08MnAWhich ofthe followingare safetyprecautions inweldingA.Check forfire hazardsB.Use properventilation C.Avoid eyecontact witharcD.Wear heat-resistant glovesE.Keep flammablematerialsnearbyThe heat-affected zoneHAZinwelding consistsof whichregionsA.Fusion lineB.Coarse-grained regionC.Fine-grainedregion D.Transition regionE.Base metal第6页共11页Welding currentcan bemeasured usinga______.A.Ammeter B.Voltmeter C.Ohmmeter D.钳形表Clamp meterE.ThermometerCommon non-destructive testingmethods forwelds include______.A.Visual inspectionB.Ultrasonic testingC.Magneticparticle testingD.Dye penetranttesting E.TensiletestingWhich ofthe followingare propertiesof goodweldsA.Sound fusionB.Uniform beadappearance C.No cracksorporosityD.Sufficient strengthE.Minimum heatinputIn submergedarcwelding,the fluxcan provide______.A.Arc stabilityB.Protection fromairC.Slag coveringD.Additional alloyingelements E.High travelspeedWelding distortioncan bereduced by______.A.Using tackwelds B.Preheating the workpiece C.Properjoint designD.Using abacking stripE.Controlling heatinputCommon typesof weldingdefects include______.A.Porosity B.Crack C.Incomplete penetrationD.UndercutE.Burn-throughWhich ofthefollowingare commonbase metalsused inweldingA.Mild steelB.Stainless steelC.Aluminum D.Copper E.Titanium第7页共11页

三、判断题（共20题，每题1分）对的打√，错的打×MIG weldingrequires ashieldinggasto protecttheweldpool.Themainpurpose offluxinSMAWisto cleantheweldpool.Higher current inweldingresults indeeper penetration.TIGweldingis suitablefor thinmaterials.Travel speedis thespeed atwhich theelectrode isfedinto theworkpiece.Weldingfumeis harmlessand doesnot requirespecialprotection.In GMAW,the fillermetaliscontinuously fedthrough thetorch.Preheating isalways requiredforweldingsteel.Undercut isadefectwhere the base metalmelts andflowsinto theweld.The HAZis thearea oftheworkpiecethat ismelted duringwelding.The amperageand voltagein awelding machineareinversely related.Oxy-acetylene weldingcan onlybeusedfor joiningmetals.The rootpass is the firstweldbeadin amulti-pass weld.Stickout inMIGweldingisthedistance fromthe contacttiptotheworkpiece.第8页共11页Aluminum iseasier toweld thansteel.Back gougingis doneto removethe rootrun ina buttweld.The weldingsymbol indicatesthe type,size,and locationoftheweld.In verticalup welding,the travelspeed shouldbe fasterthanin flatposition.PPE includesonly eyeprotection andgloves.Post-weld heattreatment PWHTis usedto improvethemechanical propertiesoftheweld.

四、简答题（共2题，每题5分）Explain theterm weldingcurrentin100words.List threecommon weldingdefects andtheir Englishnames.参考答案

一、单项选择题A

2.D

3.C

4.B

5.CA

7.A

8.B

9.A

10.BA

12.B

13.A

14.B

15.BA

17.C

18.A

19.B

20.CA

22.A

23.B

24.A

25.AB

27.A

28.A

29.A

30.B

二、多项选择题A,B,C,E

2.A,B,C,D,E

3.A,B,C,D

4.A,B,C,E

5.A,B,C,DA,C

7.A,B,C

8.A,B,C,D

9.A,B,C

10.A,B,C,D第9页共11页A,B,C,D,E

12.A,B,C,D

13.A,B,C,D

14.A,D

15.A,B,C,DA,B,C,D

17.A,B,C,D

18.A,C,D,E

19.A,B,C,D,E

20.A,B,C,D,E

三、判断题√

2.√

3.√

4.√

5.×应为焊接速度×

7.√

8.×

9.×应为焊缝表面咬边

10.×应为包含熔化和相变区域×

12.×

13.√

14.√

15.×√

17.√

18.×

19.×

20.√

四、简答题Welding current:The electricalcurrent thatflows throughthewelding arc,generating heatto meltthebase metal andfillermaterial.The currentlevel directlyaffects weldpenetrationhigher current=deeper penetrationand beadwidth.It ismeasuredinamperes Aand iscontrolled bythewelding machinesettings.Common weldingdefects:Porosity气孔:Small gasbubbles in theweldmetal.Crack裂纹:Fractures intheweldor heat-affected zone.Incomplete jointpenetration未熔透:Insufficient fusionbetweentheweldandbasemetal.Undercut咬边:Groove meltedinto thebasemetalat theweldtoe.第10页共11页Burn-through烧穿:Hole formedintheworkpiece duetoexcessive heat.备注本试题涵盖焊接专业核心英语术语，适合焊接专业学生、技术人员巩固英语应用能力，或作为焊接英语等级考试参考资料第11页共11页。