pipeshield eng

7/31/2019 Pipeshield ENG

http://slidepdf.com/reader/full/pipeshield-eng 1/8

SELF SHIELDED FLUX CORED WIRES

BÖHLER PIPESHIELD 71 T8-FD AND BÖHLER PIPESHIELD 81 T8-FD

www.boehler-welding.com



Editorial

© B

S G A

BÖHLER WELDING, as one of the pioneer suppliers of arcwelding consumables, is continuously dedicated to developoptimal solutions for sophisticated and demanding applications.This philosophy enables our customers and partners to focuson their job and core business.

As the efficient transport of oil and gas took greater significanceover the last decades, BÖHLER WELDING recognized the trendand started to proactively engage in this field. Pipeline construc-tion in different climatic zones and in territories with differentconditions of the soil demand a great deal of ingenuity of allinvolved parties.

BÖHLER WELDING faces this very challenge alongside theprominent pipelaying companies and consequently has achieved

a world leading position in this segment with cellulosic andbasic electrodes, solid and flux cored wires. At the focus of ourattention is the weld metal toughness for maximum safety.

BÖHLER WELDING consumables are world-famous both foronshore pipeline projects and for reeled offshore subsea pipeline

laying from barges. This is proven by thousands of kilometers of line pipe, which have already been welded with our consumablesall over the globe.

A comprehensive worldwide sales network of well stockedpartners ensures rapid and on-time deliveries in all countries.

Your nearest sales partner can be found on the internet atwww.boehler-welding.com

With over 500 pipeline projects successfully completed worldwide,

BÖHLER WELDING consumables span the globe and ensuremaximum reliability and safety to mankind and our environment.

© B

S G A




Selfshieldedfluxcoredwires

BÖHLER WELDING SelfShieldedFluxCoredWires

BÖHLERPipeshield7T8FDandBÖHLERPipeshield8T8FDBÖHLERPipeshieldselfshieldedfluxcoredwiresareespeciallydevelopedforseiautoaticverticaldownweldingofpipelinesTheyarealsosuitablefortheweldingofunalloyedsteelconstructionsBothwiresofferafastfreezingeasyreovableslagandexcellentweldingcharacteristicsWeldersvaluetheeasyhandlingandthehighproductivityofourfluxcoredwire

BÖHLERPipeshieldwiresaredesignedtoofferbothgoodechanicalpropertiesandhighipacttoughnessatlowteperaturesTheoutstandingbenefitsareespeciallyaccessibleintheverticaldownpositionfor(hotpass)fillerandcaplayersDuetothebasicfillingtheinterpassteperaturecanbearrangedsiilartothatofbasicelectrodeswerecoend8–2°C

BÖHLERselfshieldedfluxcoredwiresprovidesaneasyhandlingforthewelderduetoaverytolerantstickoutlengthandlesstendencytoporosityalsowhenweldingwithalongerarclengthasaresultofhighervoltage

BÖHLER Pipeshield 71 T8-FD BÖHLER Pipeshield 81 T8-FD

Operating dataDiaeter 2 Aperage AVoltage 722 VRecoendedstickout 2 Noshieldinggas

Base materialsAccAPIL:ABX2XX2XXXX7

ClassificationAWSA29 E7T8K

Typical composition of all-weld metalC Si Mn Al Ni

wt% 2 9 8 7

Mechanical properties of all-weld metalYieldstrengthReN/2 (≥)TensilestrengthRN/2 2 (92)ElongationA(L=d)% 2 (≥2)IpactenergyCharpyV(J)

+2°C 2 (≥7)°C 7 (≥27)

Operating dataDiaeter 2 Aperage AVoltage 72 VRecoendedstickout Noshieldinggas

Base materialsAccAPIL:XX7X8

ClassificationAWSA29 E8T8Ni2

Typical composition of all-weld metalC Si Mn Al Ni

wt% 2 2 2

Mechanical properties of all-weld metalYieldstrengthReN/2 (≥7)TensilestrengthRN/2 (9)ElongationA(L=d)% 2 (≥9)IpactenergyCharpyV(J)

+2°C (≥7)°C (≥27)

Packaging: kgCoils:unitcontainsvacuupackedcoilsákgHereticallysealedetalcankgCoils:Vacuusealed

BÖHLER Pipeshield 71 T8-FD Eastern China Project ©

B S G A

© B

S G A




Weldingtechnology

PipelineweldingwithselfshieldedfluxcoredwiresIngeneralselfshieldedfluxcoredwiresarenotusableforrootpassweldingThereforeinostofallcasesacobinedtechnologyisusedTherootpassisweldedwithCELelectrodesorasanalternativewithsolidwiresWerecoendtouseBÖHLERFOXCELforrootpassweldingwithcoveredelectrodesBÖHLERSGPorBÖHLERNiMoIGwhensolidwiresareused

BÖHLER FOX CELENISO2A:2: E8C2AWSA: E

Base materials

APISpecL: ABX2XX2XrootpassuptoX8

ThereasonistheeasyandeconoicalweldingofCELelectrodesfortherootpassWeldingthefillerandcaptheoutstandinghigherdepositionrateofthefluxcoredwireoffersafasterandoreefficientjobonsiteTwodifferenttechniquesareapplied:

Variant A:Only the root pass is welded with CEL electrodesThisoptionisostlyusedinChinabutitbecoesoreandoretheinternationalpredoinantversion

ThisoptionshowsasignificantbiggerrootgapbutingeneralasalleropeningangleDuetothehighdepositionrateof theselfshieldedfluxcoredwirevariantAisveryeconoicalWeldinginvariantAshouldbeproceededinawideweavingtechniquewithonlyonebeadperlayer

Variant B:

Root, hot and super pass are welded with

CEL electrodes

40-50¡

3 ± 0.5

1 ± 0 . 5

60¡

1,5 ± 0.5

1 . 5 ± 0 . 5

Recommended joint preparation Layer setup CEL & Pipeshield

Recommended joint preparation Layer setup CEL & Pipeshield

WeldingofthefillerandcaplayersinvariantBwithself

shieldingfluxcoredwiresisnorallyweldedwithstringerbeadtechniqueWeldingshouldbeexecutedwithoutweavingandasthinaspossible(~2)Thiscausestheeffectofahighrecrystallisationinthesubjacentlayers

Figure 1 showsthetorchanglesforthefillerandcaplayersWhiletheanglefro2o’clockto2o’clockisrelativelyneutral(89°)fro2too’clocktheanglehavetobedecreasedtostabilizethebeadusingthepowerofthearcFrotoo’clocktheangleshouldbeincreasedupto°whichisthenaslightlystabbingpositionMainlyforvariantAthebigvolueofthebeadhavetobestabilizedbythecorrecttorchangletoavoidlackoffusionandotherwelding

defectsInadditionostweldingachinesofferstechnicalfeaturestodecreasethewirefeedingortheaperagetoalleviateweldinginoverheadposition

7°

9°

89°

Root and hot pass welded with BÖHLER FOX CEL... ... Filler and cap layers with Pipeshield

Figure 1: Torch angles for thefiller and cap layers.

© B

S G A

© B

S G A




Consuptionrate

BÖHLER WELDING SelfShieldedFluxCoredWires

2 inch 2 inch inch 2inch 2 inch 79 inch 82 inch 98inch inch 2 inch 88 inch792 97 27 27 88 82 22 28 2 297

Ø Pipe Ø Wire [mm] Weight [kg]

/"27

2/"28

"

"

8"72

2"8

22"88

2"9

2"9

28"72

"72

2"

828

"8

"9

8"92

"

2"8

"7

"8

8"292

"27

"22

"2

Wall thickness [inch; mm]

50¡

3 mm

1 . 5

Wire consumption in kg per jointRootpassweldedwith

cellulosicelectrodesorsolidwires

øWire2

øWire2

øWire2

øWire2

øWire2

øWire2

øWire2

øWire2

øWire2

øWire2

øWire2

øWire2

øWire2

øWire2

øWire2

øWire2

øWire2

øWire2

øWire2

øWire2

øWire2

øWire2

øWire2

82 2 82 222 282 8

2 97 2 7 7 29 2 78 8

8 92 2 29 7 9

8 2 8 222 278 8 8 7

87 7 2 2 8 9 7 7

9 9 2 279 29 9 2 78 822

72 2 29 8 87 7 7 7 99

87 2 28 2 9 7 82 99

2 2 2 8 722 8 89 8

29 27 2 9 9 9 778 89 9 7

2 29 2 2 8 9 29

2 79 9 97 89 997 8

28 8 72 9 2 78

7 28 28 9 787 9 27 2 2

8 299 7 8 78 82 9 22 8

9 9 77 7 7 877 2 2 9 9

2 9 7 922 8 9 782

2 7 2 2 787 9 28 8 7 87

22 9 82 2 29 9 8 98

2 78 7 7 82 8 79 2

2 9 9 97 7 89 2 77 7 22

27 2 9 797 2 8 77 9 29

292 7 9 78 8 78 2 99 899 29 29




DetailsregardingthenatureandapplicationpurposesofourproductsareintendedfortheinforationoftheuserThedataconcerningtheechanical

propertiesalwaysreferstotheallweldetaldepositinaccordancewiththe

applicablestandardsIntheareaoftheweldjointtheweldetalpropertiesare

influencedbythebaseetaltheweldingpositionandtheweldingparaeters

Aguaranteeofthesuitabilityforaspecifictypeofapplicationrequiresineach

individualcaseaniplicitagreeentinwriting

Subjecttochangewithoutnotice

WELDING CONSUMABLES

FOR THE CHEMICAL AND PETROCHEMICAL PROCESS INDUSTRY

WELDING CONSUMABLES

FOR HYDRO POWER STATIONS

WELDING CONSUMABLES

FOR THERMAL POWER STATIONS

WELDING CONSUMABLES

FOR STEEL CONSTRUCTION

BÖHLER DRY SYSTEM –

GUARANTEED DRY ELECTRODES

WELDING CONSUMABLES

FOR THE OFFSHORE INDUSTRY

SELF SHIELDED FLUX CORED WIRES

BÖHLER PIPESHIELD 71 T8-FD AND BÖHLER PIPESHIELD 81 T8-FD

FLUX CORED WELDING WIRES

FOR STAINLESS STEELS

Additionalbrochuresonweldingconsuablesmade by BÖHLER WELDING for selected indus-triesareavailableinseverallanguageversions

FurtherinforationcanbeobtainedfroBÖHLERWELDINGsalespartnersorat

www.boehler-welding.com/english/brochures.htm

WELDING CONSUMABLES

FOR PIPELINE CONSTRUCTION


http://www.boehler-welding.com/english/brochures.htm

http://www.boehler-welding.com/english/brochures.htm



Yourpartner:

S G A

/ 2 9

E N G 6

C o v e r p

i c t u r e :

© B

S G A

PublishedbyBÖHLERWELDING

Böhler Schweißtechnik Austria GmbHBöhlerWeldingSt8Kapfenberg/AUSTRIA

+()82+()8299postasterbsga@bsgaat

wwwboehlerweldingco


pipeshield eng

Documents