1. Cov teeb meem xav tau kev saib xyuas hauv kev tshuaj xyuas cov khoom siv vuam vuam
Welding Material Warranty Book yog ib qho tseem ceeb heev raws li cov ntaub ntawv sau thiab cov ntaub ntawv ntawm cov khoom siv vuam zoo.Cov khoom siv vuam yuav tsum raug kuaj xyuas kom ua raws li qhov yuav tsum tau ua ua ntej siv.Phau ntawv welding khoom warranty yog sib npaug rau "cov ntaub ntawv xa khoom" muab los ntawm cov chaw tsim khoom siv vuam rau cov neeg siv, thiab nws cov ntsiab lus yuav tsum raug thiab ua tiav.
Tam sim no, muaj ntau lub tuam txhab siv hluav taws xob hauv tsev, thiab qhov zoo ntawm lawv cov khoom sib txawv.Cov hom ntawv thiab cov ntsiab lus ntawm cov ntaub ntawv pov thawj khoom kuj txawv.Rau vuam engineers lossis engineers zoo, nws kuj tseem ceeb heev los xyuas cov ntaub ntawv lav.
Kab lus no siv AWS tus qauv warranty ua piv txwv los qhia luv luv cov ntsiab lus tseem ceeb uas yuav tsum nco ntsoov thaum tshuaj xyuas lub warranty.
1) Tus lej tus qauv sib raug rau cov khoom siv vuam qauv
Tag nrho cov txiaj ntsig hauv American Standard welding consumable standard yog muab faib ua imperial thiab metric systems, thiab metric system yog ntxiv nrog "M" tom qab tus qauv tooj.
Piv txwv li, submerged arc welding wire AWS A 5.17 / AWS A 5.17M
Qhov no yog qhov tseeb ntawm kev sau ntawv, tus qauv tus lej yog imperial, thiab tus qauv kuj yog imperial.
2) Cov qauv siv ntawm phau ntawv lav yuav tsum ua raws li qhov xav tau tiag tiag (kev yuav khoom)
Yog tias American standard welding consumables yuav tsum tau, cov ntawv sau saum toj no tsis raug thiab tsis tuaj yeem sib npaug rau Asmeskas tus qauv, vim tias tus qauv muaj nuj nqis lossis kev sim ntawm cov qauv sib txawv.
3) Kev nthuav qhia ntawm cov qauv tsim nyog thiab cov txiaj ntsig kev sim
Cov saum toj no yog tus nqi ntawm American standard warranty book rau submerged arc vuam hlau, tab sis tus qauv siv nyob rau hauv phau ntawv warranty yog AWS A 5.17.Los ntawm tus qauv tus lej, nws tuaj yeem pom tau tias tag nrho cov txiaj ntsig yuav tsum yog lus Askiv.Txawm li cas los xij, cov qauv tsim nyog thiab cov ntaub ntawv sim hauv phau ntawv lav yog nyob rau hauv metric system, uas yog pom tseeb tsis yog tus qauv.
Piv txwv li, qhov cuam tshuam kub ntawm F7A2-EH14 yuav tsum yog -20 ° F, uas yog -28.8 ° C hauv Celsius, tab sis tus qauv tus nqi yog -30 ° C.
Raws li cov laj thawj saum toj no, nws yog ib qho tseem ceeb heev rau cov engineers los xyuas seb puas muaj "M" nyob rau hauv tus qauv tus lej thaum tshuaj xyuas phau ntawv lav.Tsuas yog nrog cov lus qhia tshwj xeeb ntawm phau ntawv warranty tuaj yeem muab cov vuam hlau tso rau hauv cov khoom siv tiag tiag.
2. Cov qauv lees paub rau txhua qhov tshwj xeeb
(1) GB qauv zoo li kev lees paub
(1) EN tus qauv zoo li kev lees paub
-EXC1 zoo chav kawm D;
- EXC2 Feem ntau, chav kawm zoo C,
- EXC3 zoo chav B;
- EXC4 Cov chav kawm zoo B +, uas txhais tau hais tias yuav tsum muaj ntxiv raws li cov chav kawm zoo B
(2) AWS Standard Appearance Acceptance Criteria
Weld profile xav tau
Kev soj ntsuam pom tus qauv
Kev lees paub rau hom kev txuas ntxiv thiab kev tshuaj xyuas
static load
cyclic load
(1) txwv tsis pub tawg
Txhua qhov tawg, tsis hais qhov loj me lossis qhov chaw, tsis tau txais.
X
X
(2) Weld / puag hlau fusion
Yuav tsum muaj kev sib xyaw ua tiav ntawm cov khaubncaws sab nraud povtseg ntawm cov vuam thiab nruab nrab ntawm cov hlau vuam thiab cov hlau hauv paus.
X
X
(3) Arc crater hla ntu
Tag nrho cov arc craters yuav tsum tau ua kom tiav rau qhov loj me me, tshwj tsis yog qhov kawg ntawm kev sib tshuam fillet welds uas tshaj qhov ntev ntawm qhov sib cuam tshuam fillet weld.
X
X
(4) Weld profile puab
Weld profile zoo yuav tsum ua raws li "Pass thiab Fail Weld Profile Shape (AWSD1.1-2000)"
X
X
(5) Lub sijhawm tshuaj xyuas
Kev soj ntsuam pom ntawm tag nrho cov hlau welds tuaj yeem pib sai li sai tau thaum lub vuam tiav lawm tau txias rau ambient chav tsev kub.Kev lees txais ntawm ASTM A514, A517 thiab A709 Qib 100 thiab 100W steel welds yuav tsum tau ua raws li kev tshuaj xyuas qhov muag tsawg kawg 48 teev tom qab vuam tiav.
X
X
(6) Tsis txaus weld loj
Qhov loj ntawm ib qho txuas txuas txuas ntxiv uas yog tsawg dua li qhov teev npe nominal loj (L) thiab ua tau raws li cov lus qhia hauv qab no (U) yuav tsis raug them:
LU
Specified nominal weld loj (mm) Tso cai txo tau raws li L (mm)
≤ 5 ≤ 1.6
6 ≤ 2.5
≥ 8 ≤ 3
Nyob rau hauv txhua rooj plaub, qhov undersized ib feem ntawm weld yog nruj me ntsis txwv tsis pub tshaj 10% ntawm qhov ntev ntawm lub weld.Lub vuam seam txuas lub vev xaib ntawm lub girder thiab flange yuav tsum tsis muaj qhov loj me nyob rau hauv qhov ntau ntawm ob qhov kawg ntawm kab teeb thiab qhov ntev sib npaug li ob npaug ntawm qhov dav ntawm flange.
X
X
(7) Kev txiav txim siab
(A) Undercuts ntawm cov ntaub ntawv nrog ib tug tuab ntawm tsawg tshaj li 25 hli yog nruj me ntsis txwv tsis pub tshaj 0.8 hli, tab sis undercuts nrog ib tug cumulative undercut ntawm 50 hli thiab siab tshaj plaws ntawm 1.5 hli nyob rau hauv tej 300 hli ntev yog tso cai.Rau cov ntaub ntawv nrog ib tug tuab sib npaug zos rau los yog ntau tshaj 25 hli, lub undercut ntawm tej qhov ntev ntawm weld yog nruj me ntsis txwv tsis pub tshaj 1.5 hli.
X
(B) Nyob rau hauv lub ntsiab Cheebtsam, nyob rau hauv tej kev tsim load, thaum lub weld nyob rau hauv ib tug transverse kev sib raug zoo nrog lub tensile kev nyuaj siab, lub undercut qhov tob yog nruj me ntsis txwv tsis pub ntau tshaj 0.25mm.Rau lwm qhov xwm txheej, qhov tob tob yog txwv tsis pub tshaj 0.8mm.
X
(8) Lub cev
(A) Ua kom tiav kev nkag mus (CJP) groove welds ntawm pob tw pob qij txha qhov twg cov welds yog transverse mus rau xam tensile stress, thiab tsis pom tubular pores raug tso cai.Rau tag nrho lwm cov groove thiab fillet welds, cov sum ntawm cov diameters ntawm pom tubular porosity sib npaug los yog ntau tshaj 0.8 hli yuav tsum tsis txhob tshaj 10 hli nyob rau hauv tej 25 hli ntev weld thiab 20 hli nyob rau hauv tej 300 hli ntev weld.
X
(B) Qhov zaus ntawm qhov tshwm sim ntawm tubular pores nyob rau hauv fillet welds yog nruj me ntsis txwv tsis pub tshaj 1 rau 100mm ntawm weld ntev, thiab lub siab tshaj plaws txoj kab uas hla yog nruj me ntsis txwv tsis pub tshaj 2.5mm.Cov kev zam hauv qab no yog: Rau fillet welds txuas stiffeners rau lub vev xaib, qhov sib npaug ntawm txoj kab uas hla ntawm tubular porosity yuav tsum tsis pub tshaj 10mm hauv ib qho 25mm ntev weld, thiab yuav tsum tsis pub tshaj 20mm hauv ib qho 300mm ntev weld.
X
(C) Ua kom tiav kev nkag mus (CJP) groove welds ntawm pob tw pob qij txha nyob rau hauv ib qho kev sib raug zoo mus rau kev suav tensile stress, tsis muaj tubular pores.Rau tag nrho lwm cov groove welds, zaus ntawm tubular pores yuav tsum tsis txhob ntau tshaj 1 rau 100mm ntawm weld ntev, thiab qhov siab tshaj plaws txoj kab uas hla yuav tsum tsis txhob ntau tshaj 2.5mm.
X
Lus Cim: "X" txhais tau tias tsim nyog hom kev sib txuas, qhov khoob txhais tau tias tsis haum.
3. Yog vim li cas thiab kev soj ntsuam ntawm kev sib txuas ntawm cov vuam tsis zoo thiab kev tiv thaiv kev ntsuas
1. Stomata
Vuam txoj kev
ua rau
Kev tiv thaiv
Phau ntawv arc vuam
(1) Cov electrode tsis zoo los yog ntub dej.
(2) Lub vuam muaj noo noo, roj lossis xeb.
(3) Lub vuam ceev yog ceev heev.
(4) Tam sim no muaj zog heev.
(5) Qhov ntev arc tsis haum.
(6) Lub thickness ntawm vuam yog loj, thiab cov hlau txias yog ceev heev.
(1) Xaiv cov electrode uas tsim nyog thiab ua tib zoo saib kom qhuav.
(2) Ntxuav qhov chaw welded ua ntej vuam.
(3) Txo qhov vuam ceev kom cov roj sab hauv tuaj yeem khiav tau yooj yim.
(4) Siv qhov tsim nyog tam sim no pom zoo los ntawm cov chaw tsim khoom.
(5) Kho qhov ntev arc.
(6) Ua haujlwm preheating kom raug.
CO2 gas shielded vuam
(1) Cov khoom siv hauv paus yog qias neeg.
(2) Lub vuam hlau yog xeb lossis cov dej ntws ntub dej.
(3) Qhov chaw vuam tsis zoo thiab xaiv tsis raug ntawm vuam hlau.
(4) Lub elongation qhuav yog ntev dhau lawm, thiab CO2 roj tiv thaiv tsis zoo.
(5) Cov cua ceev yog qhov loj thiab tsis muaj cov khoom siv tiv thaiv cua.
(6) Lub vuam ceev yog ceev heev thiab txias yog ceev.
(7) Spark splashes lo rau lub nozzle, ua rau roj turbulence.
(8) Cov pa roj muaj cov purity tsis zoo thiab muaj ntau yam impurities (tshwj xeeb tshaj yog ya raws).
(1) Ua tib zoo saib xyuas qhov chaw welded ua ntej vuam.
(2) Xaiv cov vuam hlau tsim nyog thiab ua kom nws qhuav.
(3) Qhov chaw vuam cov hlaws yuav tsum tsis muaj qhov tsis xws luag, thiab tib lub sijhawm, nws yuav tsum huv, thiab qhov loj ntawm vuam hlau yuav tsum tsim nyog.
(4) Txo qhov ntev elongation qhuav thiab kho cov pa roj kom tsim nyog.
(5) Txhim kho cov khoom siv cua tshuab.
(6) Txo qhov ceev kom cia cov pa hauv tsev khiav tawm.
(7) Ua tib zoo tshem tawm cov vuam slag ntawm lub nozzle, thiab siv cov nplaum nplaum nplaum kom ntev lub neej ntawm lub nozzle.
(8) Lub purity ntawm CO2 yog ntau tshaj 99.98%, thiab cov ntsiab lus noo noo yog tsawg dua 0.005%.
Submerged arc vuam
(1) Muaj cov organic impurities xws li xeb, oxide zaj duab xis, roj, thiab lwm yam.
(2) Lub flux yog ntub.
(3) Cov flux muaj paug.
(4) Lub vuam ceev yog ceev heev.
(5) Tsis txaus flux qhov siab.
(6) Qhov siab ntawm cov flux loj heev, kom cov pa roj tsis yooj yim khiav tawm (tshwj xeeb tshaj yog thaum qhov loj me ntawm cov flux zoo).
(7) Lub vuam hlau yog xeb los yog stained nrog roj.
(8) Lub polarity tsis tsim nyog (tshwj xeeb tshaj yog thaum lub docking kis kab mob, nws yuav ua rau pores).
(1) Lub vuam yuav tsum tau muab av los yog hlawv nrog nplaim taws, thiab tom qab ntawd tshem tawm nrog txhuam txhuam.
(2) txog 300 ℃ ziab
(3) Ua tib zoo saib xyuas qhov cia ntawm cov flux thiab tu thaj chaw ze ntawm qhov vuam kom tsis txhob sib xyaw ntawm sundries.
(4) Txo qhov vuam ceev.
(5) Lub qhov ncauj ntawm lub qhov hluav taws xob qhov hluav taws xob roj hmab yuav tsum tau hloov siab dua.
(6) Lub qhov hluav taws xob hluav taws xob roj hmab yuav tsum tau hloov kho qis dua, thiab qhov siab tsim nyog yog 30-40mm nyob rau hauv cov ntaub ntawv ntawm tsis siv neeg vuam.
(7) Hloov kom huv welding hlau.
(8) Hloov qhov txuas ncaj qha tam sim no (DC-) mus rau qhov kev sib txuas ncaj qha tam sim no rov qab (DC +).
khoom siv phem
(1) Lub rooj decompression yog txias, thiab cov roj tsis tuaj yeem ntws tawm.
(2) Lub nozzle yog thaiv los ntawm cov hluav taws xob tawg.
(3) Lub vuam hlau muaj roj thiab xeb.
(1) Thaum tsis muaj lub tshuab hluav taws xob txuas nrog lub tshuab hluav taws xob, lub tshuab hluav taws xob hluav taws xob yuav tsum tau teeb tsa, thiab qhov ntsuas qhov ntsuas yuav tsum tau soj ntsuam tib lub sijhawm.
(2) Ntxuav nozzle spatter nquag.Thiab coated nrog txaws adhesion inhibitor.
(3) Tsis txhob kov cov roj thaum lub vuam hlau yog khaws cia lossis ntsia.
Self-shielded flux-cored hlau
(1) Qhov voltage siab dhau lawm.
(2) Lub protruding ntev ntawm vuam hlau yog luv dhau.
(3) Muaj xeb, xim thiab noo noo nyob rau saum npoo ntawm steel phaj.
(4) Lub kaum sab xis ntawm lub vuam teeb yog inclined heev.
(5) Kev txav ceev nrawm heev, tshwj xeeb tshaj yog rau kab rov tav vuam.
(1) Txo qhov voltage.
(2) Siv raws li ntau yam kev qhia vuam hlau.
(3) Ntxuav ua ntej vuam.
(4) Txo lub kaum sab xis kom txog li 0-20 °.
(5) Kho kom raug.
3. Txom nyem
Vuam txoj kev
ua rau
Kev tiv thaiv
Phau ntawv arc vuam
(1) Tam sim no muaj zog heev.
(2) Lub vuam pas nrig tsis haum.
(3) Lub arc ntev dhau lawm.
(4) Txoj kev ua haujlwm tsis raug.
(5) Cov khoom siv hauv paus yog qias neeg.
(6) Lub hauv paus hlau yog overheated.
(1) Siv qis tam sim no.
(2) Xaiv qhov tsim nyog hom thiab qhov loj ntawm vuam pas nrig.
(3) Ua kom zoo arc ntev.
(4) Siv lub kaum sab xis kom raug, qeeb qeeb, luv arc thiab txoj kev nqaim.
(5) Tshem tawm cov roj stains lossis xeb los ntawm cov hlau puag.
(6) Siv electrodes nrog me me diameters.
CO2 gas shielded vuam
(1) Lub arc ntev dhau lawm thiab qhov vuam ceev nrawm dhau.
(2) Thaum lub sij hawm fillet welding, kev sib dhos ntawm cov electrode tsis raug.
(3) Lub vuam viav vias ntsug lossis kev ua haujlwm tsis zoo, kom ob sab ntawm cov hlaws hlaws tsis txaus sau thiab txiav.
(1) Txo qhov arc ntev thiab ceev.
(2) Thaum lub sij hawm kab rov tav fillet vuam, txoj hauj lwm ntawm vuam hlau yuav tsum yog 1-2 hli ntawm qhov kev sib tshuam.
(3) Kho cov txheej txheem ua haujlwm.
4. Slag suav nrog
Vuam txoj kev
ua rau
Kev tiv thaiv
Phau ntawv arc vuam
(1) Cov txheej pem hauv ntej vuam slag tsis raug tshem tawm tag nrho.
(2) Lub vuam tam sim no tsawg dhau.
(3) Lub vuam ceev yog qeeb heev.
(4) Lub viav vias electrode yog dav dhau.
(5) Tsis zoo weld ua ke thiab tsim.
(1) Ua tib zoo tshem tawm pem hauv ntej txheej vuam slag.
(2) Siv tam sim no siab dua.
(3) Ua kom qhov vuam ceev.
(4) Txo qhov dav viav vias ntawm electrode.
(5) Kho qhov tsim nyog groove kaum sab xis thiab tshem tawm.
CO2 gas arc vuam
(1) Lub hauv paus hlau yog inclined (downhill) ua ntej lub vuam slag.
(2) Tom qab vuam dhau los, cov vuam slag tsis huv.
(3) Qhov tam sim no me me dhau, qhov nrawm nrawm, thiab qhov vuam yog loj.
(4) Thaum vuam los ntawm txoj kev rau pem hauv ntej, vuam slag nyob rau hauv lub qhov yog ntau ua ntej.
(1) Muab cov vuam vuam nyob rau hauv txoj kab rov tav kom ntau li ntau tau.
(2) Ua tib zoo saib xyuas qhov huv ntawm txhua qhov weld hlaws.
(3) Ua kom cov tam sim no thiab vuam ceev kom cov vuam slag ntab yooj yim.
(4) Ua kom qhov vuam ceev
Submerged arc vuam
(1) Lub vuam kev taw qhia yog inclined mus rau lub hauv paus hlau, yog li cov slag ntws tom ntej.
(2) Thaum lub sij hawm welding ntau txheej, grooved nto yog melted los ntawm vuam hlau, thiab vuam hlau yog ze rau sab ntawm lub zawj.
(3) Slag inclusions yuav tshwm sim ntawm qhov pib vuam qhov chaw uas muaj daim ntawv qhia.
(4) Yog tias qhov tam sim no me me dhau, muaj vuam slag seem ntawm ob txheej, thiab cov kab nrib pleb tau yooj yim tsim thaum vuam nyias daim hlau.
(5) Lub vuam ceev yog tsawg dhau, uas ua rau vuam slag ua ntej.
(6) Lub arc voltage ntawm qhov kawg txheej txheej yog siab dhau lawm, ua rau cov dawb vuam slag do mus rau qhov kawg ntawm cov hlaws weld.
(1) Lub vuam yuav tsum thim rov qab mus rau qhov sib txawv, lossis lub hauv paus hlau yuav tsum tau hloov mus rau txoj kab rov tav kom ntau li ntau tau.
(2) Qhov kev ncua deb ntawm sab ntawm lub qhov thiab cov vuam hlau yuav tsum yog tsawg kawg yog ntau dua li txoj kab uas hla ntawm lub vuam hlau.
(3) Lub thickness ntawm daim ntawv qhia phaj thiab cov duab ntawm lub qhov yuav tsum yog tib yam li lub hauv paus hlau.
(4) Ua kom cov vuam tam sim no kom cov seem vuam slag yaj yooj yim.
(5) Ua kom cov vuam tam sim no thiab vuam ceev.
(6) Txo qhov hluav taws xob lossis nce qhov vuam ceev.Yog tias tsim nyog, txheej txheej npog yog hloov los ntawm ib qho kev sib txuas welding mus rau ntau qhov vuam.
Self-shielded flux-cored hlau
(1) Arc voltage tsawg dhau.
(2) Lub arc ntawm vuam hlau yog tsis tsim nyog.
(3) Lub vuam hlau txuas ntev dhau lawm.
(4) Qhov tam sim no tsawg dhau thiab qhov vuam ceev qeeb dhau.
(5) Thawj vuam slag tsis txaus tshem tawm.
(6) Thawj qhov dhau los ua ke tsis zoo.
(7) Qhov zawj yog nqaim heev.
(8) Welds nqes hav.
(1) Kho kom raug.
(2) Ntxiv kev xyaum ntxiv.
(3) Ua raws li cov lus qhia rau kev siv ntau yam vuam hlau.
(4) Kho qhov vuam tsis.
(5) Kom meej meej
(6) Siv qhov hluav taws xob tsim nyog thiab ua tib zoo mloog rau lub viav vias arc.
(7) Kho qhov tsim nyog groove kaum sab xis thiab tshem tawm.
(8) Puag tiaj, lossis txav nrawm dua.
5. Kev nkag tsis tiav
Vuam txoj kev
ua rau
Kev tiv thaiv
Phau ntawv arc vuam
(1) Kev xaiv tsis raug ntawm electrodes.
(2) Tam sim no tsawg dhau.
(3) Lub vuam ceev ceev heev, qhov kub thiab txias tsis txaus, thiab qhov ceev yog qeeb heev, lub arc impulse yog thaiv los ntawm vuam slag, thiab tsis tuaj yeem muab rau lub hauv paus hlau.
(4) Lub vuam tsim thiab kev sib xyaw ua ke tsis raug.
(1) Siv lub tshuab nqus hluav taws xob ntau dua.
(2) Siv tam sim no tsim nyog.
(3) Siv qhov tsim nyog vuam ceev hloov.
(4) Ua kom cov degree ntawm grooving, nce qhov sib txawv, thiab txo qhov tob hauv paus.
CO2 gas shielded vuam
(1) Lub arc me dhau lawm thiab qhov vuam ceev yog tsawg dhau.
(2) Lub arc ntev dhau lawm.
(3) Tsis zoo slotting tsim.
(1) Ua kom cov vuam tam sim no thiab nrawm.
(2) Txo qhov ntev arc.
(3) Ua kom cov qib slotting.Ua kom qhov sib txawv thiab txo qhov tob hauv paus.
Self-shielded flux-cored hlau
(1) Tam sim no tsawg dhau.
(2) Lub vuam ceev yog qeeb heev.
(3) Qhov voltage siab dhau lawm.
(4) Tsis zoo arc viav vias.
(5) Lub kaum sab xis tsis zoo.
(1) Ua kom qhov tam sim no.
(2) Ua kom qhov vuam ceev.
(3) Txo qhov voltage.
(4) xyaum ntau dua.
(5) Siv lub kaum sab xis loj dua.
6. Ncua tseg
Vuam txoj kev
ua rau
Kev tiv thaiv
Phau ntawv arc vuam
(1) Lub vuam muaj cov hlau alloy siab dhau lawm xws li carbon thiab manganese.
Vuam txoj kev
ua rau
Kev tiv thaiv
Phau ntawv arc vuam
(1) Lub vuam muaj cov alloying siab dhau lawm xws li carbon thiab manganese.
(2) Qhov zoo ntawm cov electrode tsis zoo los yog ntub dej.
(3) Kev nruj nruj ntawm qhov vuam yog loj heev.
(4) Cov ntsiab lus sulfur ntawm cov khoom siv busbar yog siab dhau, uas tsis haum rau vuam.
(5) Kev npaj tsis txaus rau kev tsim kho.
(6) Lub thickness ntawm lub hauv paus hlau yog loj thiab cov cua txias yog ceev heev.
(7) Tam sim no muaj zog heev.
(8) Thawj weld pass tsis txaus los tiv thaiv kev ntxhov siab.
(1) Siv lub tshuab hluav taws xob tsawg hydrogen.
(2) Siv cov electrodes tsim nyog thiab ua tib zoo saib kom qhuav.
(3) Txhim kho cov txheej txheem tsim, ua tib zoo saib xyuas cov txheej txheem vuam, thiab ua cov kev kho cua sov tom qab vuam.
(4) Tsis txhob siv cov hlau tsis zoo.
(5) Preheating lossis tom qab cua sov yuav tsum tau txiav txim siab thaum vuam.
(6) Preheat lub hauv paus hlau thiab txias nws maj mam tom qab vuam.
(7) Siv tam sim no tsim nyog.
(8) Lub vuam hlau ntawm thawj welding yuav tsum siab tiv thaiv shrinkage kev nyuaj siab.
CO2 gas shielded vuam
(1) Lub kaum sab xis me me dhau lawm, thiab pear-puab thiab weld hlaws tawg yuav tshwm sim thaum lub sijhawm vuam tam sim no.
(2) Cov ntsiab lus carbon ntawm lub hauv paus hlau thiab lwm yam alloys siab dhau lawm (weld hlaws thiab kub ntxoov ntxoo cheeb tsam).
(3) Thaum welding ntau txheej, thawj txheej ntawm weld hlaws me me dhau.
(4) Kev sib txuas tsis zoo, ua rau muaj kev sib khi ntau dhau.
(5) Lub vuam hlau yog ntub, thiab hydrogen nkag mus rau hauv cov hlaws vuam.
(6) Lub tes tsho phaj tsis txuas nrog nruj, ua rau tsis sib xws thiab kev ntxhov siab.
(7) Cov cua txias yog qeeb (stainless steel, aluminium alloy, thiab lwm yam) vim yog cov vuam ntau dhau ntawm thawj txheej.
(1) Ua tib zoo saib xyuas qhov kev sib koom ua ke ntawm qhov tsim nyog slotting lub kaum sab xis thiab tam sim no, thiab nce lub kaum sab xis yog tias tsim nyog.
(2) Siv cov electrodes uas muaj cov pa roj carbon tsawg.
(3) Thawj welding hlau yuav tsum txaus resistant rau shrinkage kev nyuaj siab.
(4) Txhim kho cov txheej txheem tsim, ua tib zoo saib xyuas cov txheej txheem vuam, thiab ua cov kev kho cua sov tom qab vuam.
(5) Ua tib zoo saib rau kev khaws cia ntawm vuam hlau.
(6) Ua tib zoo saib xyuas qhov tseeb ntawm kev sib txuas ntawm vuam.
(7) Ua tib zoo saib xyuas qhov tseeb tam sim no thiab vuam ceev.
Submerged arc vuam
(1) Lub vuam hlau thiab cov flux siv rau lub hauv paus hlau ntawm lub vuam tsis zoo sib xws (lub hauv paus hlau muaj cov pa roj carbon ntau dhau, thiab cov hlau hlau muaj cov manganese tsawg dhau).
(2) Cov hlaws hlaws tau txias sai heev kom ua rau thaj chaw muaj kev kub ntxhov.
(3) Cov pa roj carbon monoxide thiab sulfur nyob rau hauv lub vuam hlau loj heev.
(4) Lub hlaws quab yuam tsim nyob rau hauv thawj txheej ntawm ntau txheej vuam yog tsis txaus los tiv thaiv shrinkage kev nyuaj siab.
(5) Kev nkag mus ntau dhau lossis kev sib cais thaum lub sij hawm vuam fillet.
(6) Lub vuam kev tsim kho ib ntus tsis raug, thiab lub zog sib khi ntawm lub hauv paus hlau yog loj.
(7) Cov duab ntawm cov hlaws weld tsis tsim nyog, thiab qhov sib piv ntawm qhov dav ntawm cov hlaws weld mus rau qhov tob ntawm cov hlaws weld yog qhov loj lossis me dhau.
(1) Siv vuam hlau nrog cov ntsiab lus siab manganese.Thaum lub hauv paus hlau muaj cov pa roj carbon ntau, kev ntsuas ua ntej yuav tsum tau ua.
(2) Lub vuam tam sim no thiab qhov hluav taws xob yuav tsum tau nce, qhov vuam ceev yuav tsum raug txo, thiab lub hauv paus hlau yuav tsum tau rhuab.
(3) Hloov cov vuam hlau.
(4) Lub vuam hlau ntawm thawj txheej ntawm weld hlaws yuav tsum tau tiv thaiv kev nyuaj siab shrinkage.
(5) Txo qhov vuam tam sim no thiab vuam ceev thiab hloov qhov polarity.
(6) Ua tib zoo saib xyuas cov txheej txheem tsim kho thiab muab cov lus qhia rau kev ua haujlwm vuam.
(7) Qhov sib piv ntawm weld hlaws dav rau qhov tob yog li 1: 1: 25, tam sim no txo qis thiab qhov hluav taws xob nce.
7. Deformation
Vuam txoj kev
ua rau
Kev tiv thaiv
tes vuam
CO2 gas shielded vuam
Self-shielded flux-cored hlau vuam
Tsis siv neeg submerged arc vuam
(1) Cov txheej txheem vuam ntau dhau.
(2) Kev siv vuam tsis zoo.
(3) Kev npaj tsis txaus rau kev tsim kho.
(4) Kev txias txias ntawm lub hauv paus hlau.
(5) Lub hauv paus hlau yog overheated.(daim ntawv)
(6) Kev tsim vuam tsis raug.
(7) Cov hlau ntau dhau yog welded.
(8) Txoj kev txwv tsis pub muaj tseeb.
(1) Siv cov khoom siv hluav taws xob nrog cov kab uas loj dua thiab cov hluav taws xob ntau dua.
(2) Kho qhov vuam ua ntu zus
(3) Ua ntej welding, siv lub fixture los kho cov welding kom tsis txhob muaj warping.
(4) Tsis txhob ua kom txias ntau dhau los yog preheating ntawm lub hauv paus hlau.
(5) Siv cov khoom siv vuam vuam uas tsis muaj qhov nkag.
(6) Txo qhov sib txawv ntawm qhov vuam thiab txo cov qhov txuas.
(7) Ua tib zoo saib xyuas qhov vuam loj thiab tsis txhob ua cov hlaws hlaws loj heev.
(8) Ua tib zoo saib xyuas kev kho kom tsis txhob deformation.
8. Lwm yam vuam tsis xws luag
Vuam txoj kev
ua rau
Kev tiv thaiv
sib tshooj
(1) Tam sim no tsawg dhau.
(2) Lub vuam ceev yog qeeb heev.
(1) Siv lub tshuab hluav taws xob tsim nyog.
(2) Siv lub nrawm nrawm.
Tsis zoo weld hlaws zoo li
(1) Lub vuam vuam tsis raug.
(2) Txoj kev ua haujlwm tsis haum.
(3) Lub vuam tam sim no siab dhau lawm thiab txoj kab uas hla ntawm electrode yog tuab heev.
(4) Lub vuam yog overheated.
(5) Hauv cov hlaws vuam, txoj kev vuam tsis zoo.
(6) Lub ntsej muag tiv tauj yog hnav.
(7) Qhov ntev ntawm cov vuam hlau tseem tsis hloov.
(1) Xaiv cov electrode qhuav ntawm qhov loj me thiab zoo.
(2) Txais kev sib xws thiab tsim nyog ceev thiab vuam ib ntus.
(3) Xaiv cov vuam uas tsim nyog tam sim no thiab txoj kab uas hla.
(4) Txo qhov tam sim no.
(5) xyaum ntau dua.
(6) Hloov cov lus qhia tiv tauj.
(7) Txhim kho qhov ntev thiab txawj ntse.
khoov
(1) Kev siv tsis raug ntawm cov welding rods.
(2) Cov electrode ntub dej.
(3) Kev txias txias ntawm lub hauv paus hlau.
(4) Tsis huv electrodes thiab kev sib cais ntawm weldments.
(5) Cov ntsiab lus carbon thiab manganese nyob rau hauv vuam yog siab dhau.
(1) Siv cov khoom siv hluav taws xob tsim nyog, yog tias nws tsis tuaj yeem tshem tawm, siv lub tshuab hluav taws xob tsawg.
(2) Siv cov electrodes qhuav.
(3) Txo qhov vuam ceev thiab zam kom txias sai.Nws yog qhov zoo tshaj plaws los siv preheating lossis postheating.
(4) Siv cov khoom siv hluav taws xob zoo hydrogen tsawg.
(5) Siv electrodes nrog salinity ntau dua.
ib nrab arc
(1) Thaum lub sij hawm DC vuam, lub magnetic teb generated los ntawm lub vuam yog tsis sib xws, uas ua rau lub arc deflect.
(2) Txoj hauj lwm ntawm cov xaim hauv av tsis zoo.
(3) Lub kaum sab xis ntawm lub vuam teeb loj dhau.
(4) Qhov ntev ntawm lub vuam hlau yog luv dhau.
(5) Qhov hluav taws xob siab dhau lawm thiab lub arc ntev dhau lawm.
(6) Tam sim no loj heev.
(7) Lub vuam ceev yog ceev heev.
(1) Muab cov xaim hauv av rau ntawm ib sab ntawm lub arc, lossis txuas rau sab nraud, lossis siv lub voj voog luv luv, lossis kho qhov chaw sib nqus kom ua kom zoo dua qub, lossis hloov mus rau AC vuam.
(2) Kho qhov chaw ntawm cov xaim hauv av.
(3) Txo lub teeb lub kaum sab xis.
(4) Ua kom qhov ntev ntev ntawm cov vuam hlau.
(5) Txo qhov voltage thiab arc.
(6) Kho kom raug siv tam sim no.
(7) Lub vuam ceev ua qeeb.
hlawv dhau
(1) Thaum muaj slotted vuam, tam sim no loj heev.
(2) Qhov sib txawv ntawm cov welds loj dhau vim qhov tsis zoo grooving.
(1) Txo qhov tam sim no.
(2) Txo qhov sib txawv weld.
Tsis sib xws weld hlaws
(1) Cov lus qhia kev sib cuag yog hnav, thiab cov hlau tso zis viav vias.
(2) Kev siv hluav taws xob vuam tsis zoo.
(1) Hloov cov hlua txuas txuas nrog ib qho tshiab.
(2) Ua ntau yam kev xyaum.
Vuam kua muag
(1) Qhov tam sim no loj dhau thiab qhov vuam ceev nrawm dhau.
(2) Lub arc luv dhau thiab cov hlaws hlaws yog siab.
(3) Lub vuam hlau tsis sib haum zoo.(thaum welding)
(1) Xaiv qhov tseeb tam sim no thiab vuam ceev.
(2) Ua kom qhov ntev arc.
(3) Lub vuam hlau yuav tsum tsis txhob nyob deb dhau ntawm kev sib tshuam.
Ntxim qab heev
(1) Lub vuam vuam tsis raug.
(2) Lub arc ntev dhau lawm.
(3) Qhov tam sim no siab dhau lossis qis dhau.
(4) Lub arc voltage siab dhau los yog qis dhau.
(5) Lub vuam hlau protrudes ntev dhau lawm.
(6) Lub vuam teeb yog inclined dhau lawm thiab lub kaum sab xis yog loj heev.
(7) Lub vuam hlau yog hygroscopic heev.
(8) Lub tshuab vuam tsis zoo.
(1) Siv cov electrodes qhuav thiab tsim nyog.
(2) Siv ib qho luv luv arc.
(3) Siv lub tshuab hluav taws xob tsim nyog.
(4) Kho kom raug.
(5) Ua raws li cov lus qhia rau kev siv ntau yam vuam hlau.
(6) Cia nws ntsug li sai tau thiab tsis txhob tilting ntau dhau.
(7) Ua tib zoo saib xyuas cov xwm txheej ntawm lub tsev khaws khoom.
(8) Kho, ua tib zoo saib xyuas cov hnub ua haujlwm.
Weld hlaws zigzag
(1) Lub vuam hlau txuas ntev dhau lawm.
(2) Lub vuam hlau yog twisted.
(3) Kev ua haujlwm tsis zoo ntawm txoj kab ncaj nraim.
(1) Siv qhov ntev uas tsim nyog, piv txwv li, cov khoom xaim txuas ntxiv 20-25mm thaum tam sim no loj.Lub protruding ntev yog hais txog 40-50mm thaum lub sij hawm tus kheej-shielded vuam.
(2) Hloov cov hlau nrog ib qho tshiab lossis kho qhov twist.
(3) Thaum ua haujlwm nyob rau hauv txoj kab ncaj nraim, lub vuam teeb yuav tsum tau muab tso rau ntsug.
Lub arc tsis ruaj khov
(1) Cov lus qhia kev sib cuag ntawm qhov kawg ntawm lub vuam teeb yog qhov loj dua li cov tub ntxhais txoj kab uas hla ntawm vuam hlau.
(2) Cov ntsiab lus tiv tauj yog hnav.
(3) Lub vuam hlau yog curled.
(4) Kev sib hloov ntawm cov hlau conveyor tsis du.
(5) Lub groove ntawm lub xaim conveying log yog hnav.
(6) Lub log nias tsis zoo nias.
(7) Kev tiv thaiv ntawm cov kav dej sib txuas yog loj heev.
(1) Txoj kab uas hla ntawm lub vuam hlau yuav tsum tau sib phim nrog cov lus qhia kev sib cuag.
(2) Hloov cov lus qhia tiv tauj.
(3) Ncaj cov hlau crimp.
(4) Roj lub conveyor ncej kom lubricate qhov kev sib hloov.
(5) Hloov lub log conveying.
(6) Lub siab yuav tsum tsim nyog, xoob xoob xoob xoob yog qhov tsis zoo, cov xaim nruj dhau lawm.
(7) Qhov khoov ntawm lub catheter loj dhau, kho thiab txo qhov khoov tus nqi.
Arc tshwm sim ntawm nozzle thiab lub hauv paus hlau
(1) luv luv Circuit Court ntawm nozzle, conduit los yog tiv tauj cov lus qhia.
(1) Lub qhov hluav taws xob tawg thiab lub nozzle ntau dhau yuav raug tshem tawm, lossis siv lub raj ceramic nrog rwb thaiv tsev tiv thaiv ntawm vuam teeb.
Weld torch nozzle overheating
(1) Cov dej txias tsis tuaj yeem ntws tawm txaus.
(2) Tam sim no loj heev.
(1) Cov kav dej txias yog thaiv.Yog tias cov kav dej txias tau thaiv, nws yuav tsum tau muab tshem tawm kom cov dej siab nce thiab ntws zoo li qub.
(2) Lub vuam teeb yog siv nyob rau hauv qhov kev tso cai tam sim no thiab kev siv tus nqi.
Cov hlau nplaum rau ntawm qhov kev sib cuag
(1) Qhov kev ncua deb ntawm qhov kev sib cuag thiab lub hauv paus hlau yog luv heev.
(2) Kev tiv thaiv ntawm lub catheter loj dhau lawm thiab cov xaim pub mis tsis zoo.
(3) Tam sim no me me dhau thiab qhov hluav taws xob loj dhau.
(1) Siv qhov kev ncua deb uas tsim nyog los yog ib qho arc ntev me ntsis los pib lub arc, thiab tom qab ntawd kho kom haum rau qhov kev ncua deb.
(2) Tshem tawm sab hauv ntawm lub catheter kom muaj kev xa khoom zoo.
(3) Kho qhov tsim nyog tam sim no thiab qhov voltage.
Post lub sij hawm: Jun-07-2022