Yog tias koj koom nrog vuam cov qauv hlau, cov hlab ntsha siab, cov kav dej, nkoj, lossis ib qho haujlwm uas yuav tsum tau ua raws li cov qauv kev lag luam tshwj xeeb (xws li ASME ntawv pov thawj), koj yuav xaivE7018- qis-hydrogen electrode nrog lub zog tensile ntawm 70,000 psi uas tiv thaiv hydrogen los ntawm kev nkag mus rau cov hlau vuam, yog li zam kom tsis txhob muaj teeb meem txias tawg uas tuaj yeem ua rau koj lub koob npe nrov. Hloov pauv, yog tias koj tab tom vuam cov ntawv hlau, cov hlua khi, cov rooj vag ua liaj ua teb, lossis HVAC ductwork, ua kev kho kom zoo nkauj, lossis tsuas yog qhia koj tus menyuam txog kev ntaus ib qho arc hauv lub nkas-las, koj yuav xaivE6013-titania- hom (rutile) electrode nrog lub zog tensile ntawm 60,000 psi. Nws muaj kev zam txim siab, tso cai rau kev yooj yim arc pib txawm nrog ib qho yooj yim welder khiav hauj lwm ntawm 40 amps, thiab ua kom zoo nkauj welds txawm nyob rau ntawm rusty hlau nto.
Qhov no tsis yog qhov kev xav tshiab. Dab tsi yog qhov tshiab tiag tiag yog tias, piv rau tsib xyoos dhau los, kev sib cav txog qhov zoo ntawm ob lub electrodes tau ua qhov tseem ceeb hauv 2025. Kev lag luam thoob ntiaj teb vuam khoom siv tau tshaj $ 17.85 nphom hauv 2024 thiab tau kwv yees kom ncav cuag $ 26.98 billion los ntawm 2032, loj hlob ntawm ib qho kev loj hlob txhua xyoo (CAGR 3%) ntawm 5% kev lag luam. qhia. Raws li cov ntaub ntawv no, cov qauv kev ua lag luam tau hloov pauv mus rau qhov qis dua - cov khoom siv hydrogen: Lincoln Electric cov khoom siv hluav taws xob tau pom 22.2% xyoo- dhau- xyoo nce hauv thawj peb lub hlis twg ntawm 2026, nce mus txog $ 636 lab, tau tsav los ntawm kev hloov kho cov khoom siv los txhawb cov nqi raw khoom. Niaj hnub no, txhua tus welder yuav ib lub 5- phaus lub thawv ntawm vuam electrodes yog ua hauj lwm nyob rau hauv lub lag luam tab tom hloov pauv- tsav los ntawm kev xav tau xws li US Navy shipbuilding thiab offshore cua fais fab mus rau LNG pipeline kev tsim kho, thiab zoo li zoo li los ntawm ib tug high-profile welding scandal uas thrust rau hauv lub teb chaws xav tau 701.
Cov hauv qab no yog 2025 phau ntawv qhia piv 7018 thiab 6013 electrodes; thaum nws npog cov ntsiab lus kev, nws tseem yuav siv rau tag nrho cov nyiaj tam sim no cov khoom siv saw hlau, tus nqi lag luam, thiab cov ntsiab lus ntawm cov xov xwm tseem ceeb tsis ntev los no.
Ua ntej, cia peb txiav txim siab lub npe AWS: qhia lub ntsiab lus tseeb tom qab "7018" thiab "6013."
Ob qhov kev faib tawm yog los ntawm AWS A5.1 / A5.1M tus qauv, uas tswj cov pa roj carbon steel npog electrodes siv hauv Shielded Hlau Arc Vuam (SMAW). Lub ntsiab lus ntawm tsib - cov cim cim yog raws li hauv qab no:
E - Cov khoom yog ib qho electrode.
60 / 70- Tsawg tensile lub zog ntawm cov hlau tso rau hauv ntau txhiab phaus ib square inch (psi) (6013 sib raug rau 60,000 psi; 7018 sib npaug rau 70,000 psi).
1- Cov electrode haum rau txhua txoj haujlwm vuam (pav, kab rov tav, ntsug, thiab nyiaj siv ua haujlwm).
3 / 8 - Txheej hom thiab siv tau tam sim no: "3" txhais tau tias muaj siab -titania potassium (rutile) hom, haum rau AC, DCEP (Direct Current Electrode Positive), lossis DCEN (Direct Current Electrode Negative); "8" txhais tau tias yog hlau- hmoov, qis- hydrogen potassium hom, haum rau AC lossis DCEP.
Cov ntsiab lus feem ntau pom nyob rau hauv ntim (xws li -1, H4, H8, H16, R, MR, M) ua tus tsim ntxiv. Rau 7018 electrodes, cov cim no tseem ceeb heev: H4 qhia txog cov ntsiab lus hydrogen diffusible tsawg dua lossis sib npaug li 4 ml ib 100 g ntawm cov hlau tso; R / MR (lub ntsiab lus "moisture-resistant") qhia tau hais tias cov electrode tau dhau 9-teev kis tau tus mob ntawm 80℃F (kwv yees . 27 degree) thiab 80% txheeb ze humidity (RH). E7018-1 H4R kev tsim qauv sawv cev rau kev sib xyaw ua ke zoo tshaj plaws uas tau dhau los ua tus qauv xaiv thoob plaws hauv kev lag luam offshore, nuclear, thiab kev lag luam shipbuilding.
Tom ntej no, cia saib daim ntawv sib piv ntawm 7018 thiab 6013.
| Yam ntxwv | E6013(rutile / siab-titania K) | E7018(hlau- hmoov qis-HK) |
|---|---|---|
| Tsawg kawg tensile zog | 60,000 psi (415 MPa) | 70,000 psi (490 MPa) |
| Yam tsawg kawg yield zog | ~48 hli | ~58 hli |
| Elongation (hauv 2 nti) | 17 % | 22 % |
| Charpy cuam tshuam | Tsis xav tau | Ntau dua lossis sib npaug rau 27 J ntawm −29℃(−45℃rau E7018-1) |
| Txheej chemistry | Rutile, acidic slag | Basic, hlau- hmoov tsawg-hydrogen, potassium binder |
| Diffusible hydrogen | Tsis qis -H (feem ntau > 15 mL / 100 g) | Tsawg dua lossis sib npaug li 16 mL (tus qauv), H8 Tsawg dua lossis sib npaug rau 8, H4 Tsawg dua lossis sib npaug rau 4; hwm H4R ≈ 2-4 mL |
| Polarity | AC / DCEP / DCEN | AC lossis DCEP nkaus xwb |
| Cov hauj lwm | Txhua txoj haujlwm, suav nrog kev poob qis | Txhua txoj haujlwm tshwj tsis yog ntsug- nqes |
| Nkag mus | Loj - nruab nrab | Nruab nrab (myth-buster: 7018 tsis yog "dav-tus cwj mem" pas nrig) |
| Cia rhiab heev | Tolerant ntawm ambient humidity | Must be baked ~250–300 °F rod oven; re-bake 700–800 °F if wet >4 h |
| Slag & hlaws dai | Kev tso tawm yooj yim, zoo nkauj heev | Uniform ripples, yooj yim nti; luv- cov txheej txheem arc rub |
| Deposition efficiency | ~ 95–105 % | ~ 105–115% (hlau- hmoov boost) |
| Base hlau | Cov hlau me me, nyias ntsuas, tsis yog - tseem ceeb | Mild + low - alloy structural steels: Q345 / A36 / A572 Gr.50 / A516-70 / ABS AH36 |
| Hom amperage (1/8 ") | 80–130 A | 110–165 A |
| Code- ua haujlwm raws li txoj cai | Tsis tshua muaj siv rau kev ua haujlwm siab / qauv qauv | Standard for AWS D1.1, ASME IX, API 1104 low{2}}H |
| Tus nqi muag khoom (US, 2025) | ~ USD 2.50 – 3.10 / lb | USD 3.75 – 4.25 / lb (Hobart, ESAB, Lincoln) |
Qee tus yuav xav tias vim li cas qhov kev sib piv no tseem ceeb tshwj xeeb hauv 2025.
1. Kev xav tau ntawm kev ua lag luam hloov mus rau cov ntsiab lus qis dua hydrogen thiab cov khoom muag ntau dua
Tshaj li qhov kev loj hlob tag nrho los ntawm Credence Research-xav txog kev nce ntawm $ 17.85 nphom rau $ 26.98 nphom-Polaris Kev Tshawb Fawb Kev Lag Luam kwv yees tias kev lag luam dav hlau vuam yuav nthuav tawm ntawm $ 16.13 nphom hauv 2024 txog $ 25.40 nphom hauv 2034 (aGR. 7%) Cov ntaub ntawv los ntawm QYResearch hais txog ib ntu tshwj xeeb-arc vuam electrodes{11}} qhia txog kev lag luam loj hlob ntawm $ 3.75 nphom hauv 2025 txog $ 4.83 nphom hauv 2031 (CAGR ntawm 4.3%); Cov chaw muag khoom tseem ceeb hauv qhov chaw no suav nrog Lincoln Electric, ESAB, voestalpine (Böhler Welding), Kobelco, thiab Miller. Nippon Steel Welding's launch of SF-1E seamless flux-cored wire highlights ib "diffusible hydrogen ntsiab lus ntawm tsuas yog 2.7 mL/100g" raws li lub ntsiab muag khoom; Qhov kev qhia tshwj xeeb no tau rov hais dua "tsawg-hydrogen" tus qauv rau cov khoom lag luam hwm thiab tau tsav kev muag khoom loj hlob rau E7018 H4 thiab H4R chav kawm electrodes hauv Shielded Hlau Arc Vuam (SMAW) sector.
2. Kev nce nqi thiab kev loj hlob tau tsav los ntawm cov khoom siv vuam vuam
Lincoln Electric daim ntawv tshaj tawm nyiaj txiag rau thawj peb lub hlis twg ntawm 2026 tau lees paub- nrog cov ntaub ntawv tseem ceeb- cov khoom siv vuam vuam tau qhia cov neeg siv khoom li cas rau 18 lub hlis dhau los: cov nyiaj tau los ntawm kev lag luam khoom siv tau nce 22.2% xyoo- dhau - xyoo mus txog $ 636 lab. Lincoln Electric tau qhia meej meej txog qhov kev loj hlob no rau "kev nqis tes ua"-tseem ceeb yog qhov tsis txaus ntseeg rau kev hla tus nqi raw khoom [4]. Qhov xwm txheej no sib haum nrog tus nqi muag khoom muag: 5-pound pob ntawm Lincoln Excalibur® 7018 MR electrodes tam sim no muag rau kwv yees li $4.25 ib phaus; ESAB Atom Arc 7018 rau txog $ 3.90 ib phaus; Hobart 7018 txog $3.75 ib phaus; thiab kev lag luam-qib 6013 electrodes rau ntawm $2.50 thiab $3.10 ib phaus. Thaum tus nqi sib txawv ntawm 6013 thiab 7018 electrodes tau nthuav dav, qhov kev loj hlob tiag tiag hauv 7018 qeb tau tshwm sim hauv cov dej noo{30}}resistant H4 / H4R-rated (ie, "MR" hom) cov khoom.
3. Shipbuilding, submarine kev tsim kho, thiab tej yaam num infrastructure tsav kev thov rau qis -hydrogen electrodes
Thaum Lub Yim Hli 2024, Associated Press (AP) tau hais txog Congressional Budget Office (CBO) tus kws tshuaj ntsuam xyuas Eric Labs, uas tau hais tias US Navy's shipbuilding sector yog nyob rau hauv nws "qhov phem tshaj plaws nyob rau hauv 25 xyoo": Marinette Marine shipyard muab $ 10,000 retention bonuses kom welders $10 lab. Tom qab ntawd, thaum lub Kaum Ib Hlis 2024, HII Newport Xov Xwm Shipbuilding tau txheeb xyuas cov teeb meem kev sib txuas zoo uas cuam tshuam txog kwv yees li 23 US Navy nkoj-xws li cov nkoj thauj dav hlau USS * George Washington* (CVN-73) thiab *Virginia*-7{24} submarines SSN-796- qhia txog cov teeb meem rau kev ua haujlwm ntawm kwv yees li 20 tus kws ua haujlwm vuam. Zaj dab neeg nthuav tawm no yog ib qho piv txwv tseem ceeb ntawm cov qauv siv hluav taws xob qis qis uas xav tau rau E7018 electrodes; Tom qab tag nrho, tsis muaj leej twg yuav siv 6013 electrodes los kho lub dav hlau thauj khoom. Thaum ua ke nrog 2024 kev tshawb fawb ntawm cov neeg ua haujlwm los ntawm Deloitte thiab National Association of Manufacturers (NAM)-uas ua haujlwm 3.8 lab kev tsim haujlwm qhib thaum xyoo 2024 thiab 2033, nrog kwv yees li 1.9 lab qhov tseem tsis tau ua tiav vim qhov kev txawj ntse sib txawv-thiab US Bureau of Labor Statistics (BLS) cov ntaub ntawv qhia 381,000 kev tsim cov ntaub ntawv qhib tag nrho ntawm lub Plaub Hlis 22: Welders yog shrinking thaum lub ntim ntawm vuam cov hauj lwm uas yuav tsum tau nruj me ntsis raws li txoj cai loj hlob, yuam txhua active welder mus rub ntau tsawg-hydrogen electrodes los ntawm lawv tuav qhov cub kom tau txoj hauj lwm.
4. Sustainability tau dhau los ua tus tsav tsheb ntawm kev txiav txim siab yuav khoom
Dej hiav txwv vuam tau tshaj tawm E7018 electrode. Raws li Shielded Hlau Arc Vuam (SMAW) electrode, nws cov kev taw qhia kev lag luam qhia txog cov kev lag luam tam sim no mus rau ib puag ncig lub luag haujlwm: cov neeg yuav khoom hauv European Union tau pib xav kom cov neeg muab khoom muab cov ntaub ntawv ntawm CO₂ emissions ib kilogram ntawm vuam hlau. Basic low-hydrogen 7018 electrodes (uas muaj cov hmoov hlau) feem ntau muab kev ua haujlwm zoo dua li rutile 6013 electrodes (dhau 110% rau yav dhau los piv rau kwv yees li 100% tom kawg); Qhov kev ua tau zoo dua no pab txo qhov sib txawv hauv CO₂ emissions generated ib chav tsev ntawm deposited hlau.
