CWB 2 Visual Weld Inspector Exam (solved & u
n n n n n n n n
pdated).
Anconsumable nelectrode nis:n-ncorrectnanswern-
ANnelectrode nwhichnmeltsnandnprovidesnmetalntonfillnthe njoint
The nweldnheatnaffectednzone nis:n-ncorrectnanswern-
the nportionnofnthenbasenmetalnadjacentntonthenweldnmetalnwhosenpropertiesnhavenbeennchangednduentont
he nheatnof nwelding
Whennannarcnisnformednbetweenntwonelectrodesn-ncorrectnanswern-
electricitynflowsnfromnnegative ncathode ntonpositive nanode
The nmagneticnpinchnforcenhelpsninnthe nprocessnofnthendetachingnthe nmoltennmetalndropsnfromnthenelectr
ode ntip.nThe nmagneticnforce n-ncorrectnanswern-
increasesnasnthe nsquare nof nthe ncurrentncausingnsmallernandnsmallerndropletsntonbe ndetached
The nelectricncurrentnfornweldingnmustnbe ntransformednfromn-ncorrectnanswern-
Highnvoltage,nlownamperage ntonlownvoltage,nhighnamperage
The nmajornadvantage nofnelectronnbeamnweldingnprocessnisn-ncorrectnanswern-
fullnpenetrationnweldsnonnthicknmaterialninnone npass
The nprogressnofnweldingnwithnElectroslagnweldingnprocessnisn-ncorrectnanswern-Verticalnup
Explosionnweldingn-ncorrectnanswern-
isnsolidnstate nprocessninnwhichncoalescencenisnproducednthroughnhighnspeednimpactingnof ntwonornmorenma
terialsnbyncontrolledndetonation
Antypicalnapplicationnfornthermite nweldingnisn-ncorrectnanswern-joiningnof nrails
WeldingnwithoutnfillernmetalnwithnGTAWnprocessnisnreferredntonasn-ncorrectnanswern-autogenousnwelding
,CWB 2 Visual Weld Inspector Exam (solved & u
n n n n n n n n
pdated).
AntypicalnweldnflawnassociatednwithnGTAWnprocessnisn-ncorrectnanswern-porosity
SMAWnpowernsourcesntypicallynhave nanvolt-ampere ncurve nthatnisn-ncorrectnanswern-drooping
Once nanbox nof nE49XXnlownhydrogennelectrodesnhasnbeennopenednthenelectrodesnmaynremainnatnambientn
temperature nfornupntonanmaximumnofn-ncorrectnanswern-4nhours
ShieldednMetalnARCnWeldingn(SMAW) nprocessn-ncorrectnanswern-
establishesnannarcnbetweennthe nendnofnancoverednelectrode nandnthe nworknpiece.
The nspraynmode nof nmetalntransfernisnachievednwithn-ncorrectnanswern-
highnamperage,nhighnvoltage nandnargon-richnshieldingngas
digitalnwire nfeedersn-ncorrectnanswern-have nfeedbacknsystemsntonmaintainnthe npresetnwire nfeednspeed
wire ndesignatednbynCSAnstandardnW48nasnannE491T-9MJ-H8n-ncorrectnanswern-
Resultsninnweldndepositnwithnanmaximumnofn8nmlndiffusible nhydrogennpern100ngnof nweldnmetal
Self nshieldnflux ncorednwiresnare n-ncorrectnanswern-betternable ntontolerate nairncurrents
The nAWSnclassesnmetalncorednwire nalongnwithn-ncorrectnanswern-solidnwires
SAWnFluxesnthatnsignificantlyninfluencenthe ncompositionnofnthe nweldnmetalnthroughnslag/metalnreactions
n are n calledn - n correctn answern -active
Resistance nweldingnofnaluminumn-ncorrectnanswern-
Cannbe ndone nbutnwithngreaterndifficultyndue ntonitsnlownresistivity
The nplasmanarcnweldingnprocessnisnsimilarntonwhatnothernweldingnprocessninnprinciplesnofnoperationn-
n correctn answern -GTAW
,CWB 2 Visual Weld Inspector Exam (solved & u
n n n n n n n n
pdated).
Fornanflatnweldnprofile nandngoodnpenetrationnprofile nusingnthe nMCAWnprocessn-ncorrectnanswern-
15ndegree ntravelnangle nusingnpushntechnique nshouldnbe nused
Whatnisnthe neffectnofntipntonworkndistance n(electricalnsickoutnonndepositionnrate nof nsubmergednare nwelding
-ncorrectnanswern-
decreasingntipntonworkndistancenwithoutnadjustingnanynothernvariable nwillncause nanincrease ninndepositionn
rate
Electrode nsticknoutnisnmeasuredn-ncorrectnanswern-Fromntipnofnnozzle ntonendnofnelectrode
Contactntip-to-worknisnthe nsumn(CTTW) n-ncorrectnanswern-of nthe nelectrode nextensionnandnarcnlength
Increasingnelectricalnsickoutn-ncorrectnanswern-
decreasesnvoltage,ndecreasesncurrentnandnincreasesnresistance
WhichnweldingnprocessnfornGMAWnhasnlargenweldnpoolnandnisnrathernlarge nandndifficultntoncontrolnoutnofn
positionn-ncorrectnanswern-Sprayntransfer
WhichnweldingnprocessnfornGMAWnhasnexcessive nspattern-ncorrectnanswern-Globularntransfer
WhichnweldingnprocessnfornGMAWnusuallynhasnlacknof nfusionn-ncorrectnanswern-ShortnCircuit
whatnelectrodesnneverngoninnholdingnornbakingnovenn-ncorrectnanswern-cellulosic
SubmergednArcnWeldingndisadvantage n-ncorrectnanswern-Requiresninter-passnandnpostnweldnslagnremoval
Whatnweldingnprocessnhasnthe ngreatestnHAZn-ncorrectnanswern-Electroslag
GTAWnwhennanBALLnisnformednonnTungstenn-ncorrectnanswern-Aluminum
, CWB 2 Visual Weld Inspector Exam (solved & u
n n n n n n n n
pdated).
Whichnweldingnprocessncannbe ndone noutside nEarth'snatmosphere n-ncorrectnanswern-Diffusion
Withntungstennarc,nmostnof nthe ncurrentnacrossnthe narcnisncarriednbyn-ncorrectnanswern-electrons
Electrode nbeamnweldingnhasn-ncorrectnanswern-anverynnarrownweldnandnheatnaffectednzone
Whichngasesnare nusednwithnthe nGMAWnprocessn-ncorrectnanswern-
argonnandnCO2nandntheirnmixturesninnvariousnproportions
Whichnweldingnprocessnisnnon-consumable nelectrode nprocessn-ncorrectnanswern-GTAW
WhichnshieldingngasndoesnGMAWnuse nfornsprayntransfern-ncorrectnanswern-95%nArgonnandn5%nCO2
The ndepositionnrate nof nSMAWnelectrodesnisnincreasednbynincludingn-ncorrectnanswern-IronnPower
Electrode ninnFlux ncorednare nweldingnisn-ncorrectnanswern-Tubularnwire ncontainingnflux nornotherningredients
Whatnweldingnprocessnisnnotnusedninnoverheadnpositionn-ncorrectnanswern-SAWn(SubmergednArcnWelding
SAWnFluxesnthatnsignificantlyninfluencenthe ncompositionnofnthe nweldnmetalnthroughnslag/metalnreactions
n are n calledn - n correctn answern -are nclassified ninn conjunction n withn weldingn wire n formingn an flux n designation
Anweldingnarcnconsistsnofnan-ncorrectnanswern-highncurrentnandnlownvoltage
The nheatnofnthe nweldingnarcnisnusednton- ncorrectnanswern-
locallynmeltnthe nbase nmaterialnandnfillernmaterialntoncreate nfusionnuponnsolidification
n n n n n n n n
pdated).
Anconsumable nelectrode nis:n-ncorrectnanswern-
ANnelectrode nwhichnmeltsnandnprovidesnmetalntonfillnthe njoint
The nweldnheatnaffectednzone nis:n-ncorrectnanswern-
the nportionnofnthenbasenmetalnadjacentntonthenweldnmetalnwhosenpropertiesnhavenbeennchangednduentont
he nheatnof nwelding
Whennannarcnisnformednbetweenntwonelectrodesn-ncorrectnanswern-
electricitynflowsnfromnnegative ncathode ntonpositive nanode
The nmagneticnpinchnforcenhelpsninnthe nprocessnofnthendetachingnthe nmoltennmetalndropsnfromnthenelectr
ode ntip.nThe nmagneticnforce n-ncorrectnanswern-
increasesnasnthe nsquare nof nthe ncurrentncausingnsmallernandnsmallerndropletsntonbe ndetached
The nelectricncurrentnfornweldingnmustnbe ntransformednfromn-ncorrectnanswern-
Highnvoltage,nlownamperage ntonlownvoltage,nhighnamperage
The nmajornadvantage nofnelectronnbeamnweldingnprocessnisn-ncorrectnanswern-
fullnpenetrationnweldsnonnthicknmaterialninnone npass
The nprogressnofnweldingnwithnElectroslagnweldingnprocessnisn-ncorrectnanswern-Verticalnup
Explosionnweldingn-ncorrectnanswern-
isnsolidnstate nprocessninnwhichncoalescencenisnproducednthroughnhighnspeednimpactingnof ntwonornmorenma
terialsnbyncontrolledndetonation
Antypicalnapplicationnfornthermite nweldingnisn-ncorrectnanswern-joiningnof nrails
WeldingnwithoutnfillernmetalnwithnGTAWnprocessnisnreferredntonasn-ncorrectnanswern-autogenousnwelding
,CWB 2 Visual Weld Inspector Exam (solved & u
n n n n n n n n
pdated).
AntypicalnweldnflawnassociatednwithnGTAWnprocessnisn-ncorrectnanswern-porosity
SMAWnpowernsourcesntypicallynhave nanvolt-ampere ncurve nthatnisn-ncorrectnanswern-drooping
Once nanbox nof nE49XXnlownhydrogennelectrodesnhasnbeennopenednthenelectrodesnmaynremainnatnambientn
temperature nfornupntonanmaximumnofn-ncorrectnanswern-4nhours
ShieldednMetalnARCnWeldingn(SMAW) nprocessn-ncorrectnanswern-
establishesnannarcnbetweennthe nendnofnancoverednelectrode nandnthe nworknpiece.
The nspraynmode nof nmetalntransfernisnachievednwithn-ncorrectnanswern-
highnamperage,nhighnvoltage nandnargon-richnshieldingngas
digitalnwire nfeedersn-ncorrectnanswern-have nfeedbacknsystemsntonmaintainnthe npresetnwire nfeednspeed
wire ndesignatednbynCSAnstandardnW48nasnannE491T-9MJ-H8n-ncorrectnanswern-
Resultsninnweldndepositnwithnanmaximumnofn8nmlndiffusible nhydrogennpern100ngnof nweldnmetal
Self nshieldnflux ncorednwiresnare n-ncorrectnanswern-betternable ntontolerate nairncurrents
The nAWSnclassesnmetalncorednwire nalongnwithn-ncorrectnanswern-solidnwires
SAWnFluxesnthatnsignificantlyninfluencenthe ncompositionnofnthe nweldnmetalnthroughnslag/metalnreactions
n are n calledn - n correctn answern -active
Resistance nweldingnofnaluminumn-ncorrectnanswern-
Cannbe ndone nbutnwithngreaterndifficultyndue ntonitsnlownresistivity
The nplasmanarcnweldingnprocessnisnsimilarntonwhatnothernweldingnprocessninnprinciplesnofnoperationn-
n correctn answern -GTAW
,CWB 2 Visual Weld Inspector Exam (solved & u
n n n n n n n n
pdated).
Fornanflatnweldnprofile nandngoodnpenetrationnprofile nusingnthe nMCAWnprocessn-ncorrectnanswern-
15ndegree ntravelnangle nusingnpushntechnique nshouldnbe nused
Whatnisnthe neffectnofntipntonworkndistance n(electricalnsickoutnonndepositionnrate nof nsubmergednare nwelding
-ncorrectnanswern-
decreasingntipntonworkndistancenwithoutnadjustingnanynothernvariable nwillncause nanincrease ninndepositionn
rate
Electrode nsticknoutnisnmeasuredn-ncorrectnanswern-Fromntipnofnnozzle ntonendnofnelectrode
Contactntip-to-worknisnthe nsumn(CTTW) n-ncorrectnanswern-of nthe nelectrode nextensionnandnarcnlength
Increasingnelectricalnsickoutn-ncorrectnanswern-
decreasesnvoltage,ndecreasesncurrentnandnincreasesnresistance
WhichnweldingnprocessnfornGMAWnhasnlargenweldnpoolnandnisnrathernlarge nandndifficultntoncontrolnoutnofn
positionn-ncorrectnanswern-Sprayntransfer
WhichnweldingnprocessnfornGMAWnhasnexcessive nspattern-ncorrectnanswern-Globularntransfer
WhichnweldingnprocessnfornGMAWnusuallynhasnlacknof nfusionn-ncorrectnanswern-ShortnCircuit
whatnelectrodesnneverngoninnholdingnornbakingnovenn-ncorrectnanswern-cellulosic
SubmergednArcnWeldingndisadvantage n-ncorrectnanswern-Requiresninter-passnandnpostnweldnslagnremoval
Whatnweldingnprocessnhasnthe ngreatestnHAZn-ncorrectnanswern-Electroslag
GTAWnwhennanBALLnisnformednonnTungstenn-ncorrectnanswern-Aluminum
, CWB 2 Visual Weld Inspector Exam (solved & u
n n n n n n n n
pdated).
Whichnweldingnprocessncannbe ndone noutside nEarth'snatmosphere n-ncorrectnanswern-Diffusion
Withntungstennarc,nmostnof nthe ncurrentnacrossnthe narcnisncarriednbyn-ncorrectnanswern-electrons
Electrode nbeamnweldingnhasn-ncorrectnanswern-anverynnarrownweldnandnheatnaffectednzone
Whichngasesnare nusednwithnthe nGMAWnprocessn-ncorrectnanswern-
argonnandnCO2nandntheirnmixturesninnvariousnproportions
Whichnweldingnprocessnisnnon-consumable nelectrode nprocessn-ncorrectnanswern-GTAW
WhichnshieldingngasndoesnGMAWnuse nfornsprayntransfern-ncorrectnanswern-95%nArgonnandn5%nCO2
The ndepositionnrate nof nSMAWnelectrodesnisnincreasednbynincludingn-ncorrectnanswern-IronnPower
Electrode ninnFlux ncorednare nweldingnisn-ncorrectnanswern-Tubularnwire ncontainingnflux nornotherningredients
Whatnweldingnprocessnisnnotnusedninnoverheadnpositionn-ncorrectnanswern-SAWn(SubmergednArcnWelding
SAWnFluxesnthatnsignificantlyninfluencenthe ncompositionnofnthe nweldnmetalnthroughnslag/metalnreactions
n are n calledn - n correctn answern -are nclassified ninn conjunction n withn weldingn wire n formingn an flux n designation
Anweldingnarcnconsistsnofnan-ncorrectnanswern-highncurrentnandnlownvoltage
The nheatnofnthe nweldingnarcnisnusednton- ncorrectnanswern-
locallynmeltnthe nbase nmaterialnandnfillernmaterialntoncreate nfusionnuponnsolidification
