Tungsten electrode yog ib qho tungsten electrode ua los ntawm cov ntaub ntawv uas muaj siab melting point, corrosion kuj, siab ceev thiab zoo thermal thiab hluav taws xob conductivity. Tungsten electrodes yog dav siv rau vuam hauv lawv cov khoom. Tungsten electrode sib tsoo lossis polishing thiab pas nrig dub. Cov xim kawg yog txawv, uas tuaj yeem paub qhov txawv. Hauv tungsten electrodes, qhov tseem ceeb tshaj, lawv cov xim kawg yog txawv, thiab lawv cov ntsiab lus tungsten kuj txawv. Thaum vuam, xaiv qhov tseeb tungsten electrode kom vuam yooj yim dua. Nws yog ib qho tseem ceeb kom tau txais kev vuam zoo. Qee yam tseem ceeb uas yuav tsum tau xav txog hauv kev xaiv txoj cai yog hom khoom siv hluav taws xob (inverter lossis transformer), cov khoom siv vuam (steel, aluminium lossis stainless hlau) thiab cov khoom tuab.
Thaum pib, lanthanum tungsten electrode tau nyiam ntau yam thiab nrov heev hauv kev lag luam vuam thoob ntiaj teb nrog nws cov kev ua haujlwm zoo heev, tshwj xeeb tshaj yog nrhiav los ntawm European Welding Academy. Vim li no, cov khoom xa tawm ntawm lanthanum tungsten electrode yog qhov thib ob tsuas yog thorium tungsten, uas yog tus cwj pwm los ntawm cov khoom siv ze tshaj plaws rau 2 feem pua thium tungsten electrode, siab ruaj tam sim no thiab qhov tsawg kawg nkaus kub poob.
Feem ntau lanthanum tungsten electrode muaj 100 feem pua lanthanum oxide (la203), uas yog hu ua lanthanum oxide. Hauv Tebchaws Europe thiab Nyij Pooj, lanthanum tungsten electrode tau siv ntau tshaj plaws rau kev siv thorium tungsten electrode hauv ntau daim ntawv thov. Muaj peb hom lanthanum oxide: 2 feem pua, 1.5 feem pua thiab 1 feem pua. Lanthanum trioxide muaj qhov qis tshaj plaws electron khiav haujlwm, qhov yooj yim tshaj plaws arcing thiab qhov qis tshaj qhov kub, uas yuav pab tiv thaiv kev loj hlob ntawm cov nplej thiab txhim kho kev pab cuam lub neej. Qhov kev sim ntawm lanthanum tungsten electrode muaj 2 feem pua lanthanum qhia tau hais tias yog tias tsis muaj qhov cuam tshuam tam sim no, nws lub neej kev pab cuam ntev dua li ntawm thorium tungsten, thiab nws yooj yim dua pib arc hauv feem ntau daim ntawv thov.
Tshwj xeeb tshaj yog zoo ntawm (a) tiv thaiv thermal shock, (b) zoo vuam nyob rau hauv cov ntaub ntawv ntawm rov ignition nyob rau hauv luv luv voj voog vuam, thiab (c) tsis txhob muaj kuab paug. Thaum welding kav, welders tshwj xeeb tshaj yog txaus siab rau no lanthanum tungsten electrode. Txo downtime vim lub neej ua haujlwm ntev. Ntxiv mus, feem ntau, lanthanum tungsten electrode nrog 1.5 feem pua lanthanum oxide kuj yuav tsum tau. Nws yog ib qho yooj yim los pib lub arc ntawm qis tam sim no thiab muaj peev xwm stabilize lub arc ntawm qis tam sim no. Lanthanum hauv tungsten electrode yog lub ntiaj teb tsis tshua muaj thiab tsis muaj hluav taws xob. Qhov no lanthanum tungsten electrode feem ntau yog siv rau DC vuam, thiab nws kuj yuav muaj txiaj ntsig zoo hauv AC vuam. Lanthanum tungsten electrode muaj 1.
| Qauv | Ntxiv impurity | impurity tus lej feem pua | Tungsten feem pua | Hluav taws xob tso tawm zog | Xim kos npe |
| WL 10 | lwj 2o3 | 0.8-1.2 | Tus so | 2.8-3.2 | Dub |
| WL 15 | lwj 2o3 | 1.3-1.7 | Tus so | 2.8-3.0 | Golden daj |
| WL 20 | lwj 2o3 | 1.8-2.2 | Tus so | 2.6-2.7 | Ntuj xiav |
Lanthanum tungsten electrode yog hais txog cov khoom siv hluav taws xob nrog rau qhov tsim nyog ntawm lanthanum oxide ntxiv rau lub hauv paus tungsten. Feem ntau, nws yog siv los hloov thorium tungsten electrode. Raws li tus nqi doping ntawm lanthanum oxide, cov xim ntawm cov xim xim txheej lub taub hau ntawm lanthanum tungsten electrode cov khoom kuj txawv: xim code ntawm 0.8-1.2 feem pua electrode (WL10) yog xim dub , xim code ntawm 1. Cov txiaj ntsig tau pom tias lanthanum oxide tuaj yeem txhim kho lub neej kev pab cuam ntawm lanthanum tungsten electrode vim nws txoj haujlwm tsis tshua muaj hluav taws xob khiav, yooj yim arcing thiab qis qis.
Lub tungsten lanthanum electrode nrog cov ntsiab lus ntawm 1.5 feem pua (sib txawv ntawm 2.0 feem pua ) muaj cov conductivity ze tshaj ntawm 2.0 feem pua tungsten thorium electrode. Yog li ntawd, tus welder tuaj yeem hloov tau yooj yim electrode yam tsis tau hloov cov khoom siv.
| Qauv | Dia | Ntev | Cheebtsam | Vuam khoom |
WL 20 | 0.5MM | 150mm / 175 hli | La2O3, Yttrium oxide, cerium Nyiaj pab: Tungsten | carbon hlau stainless hlau tooj liab aluminium |
| 1. 0MM | ||||
| 1.6MM ib | ||||
| 2. 0MM | ||||
| 2.4mm ib | ||||
| 3. 0MM | ||||
| 3.2MM ib | ||||
| 4. 0MM | ||||
| 4.8mm ib | ||||
| 5. 0MM | ||||
| 6. 0MM | ||||
| 7. 0MM | ||||
| 8. 0MM | ||||
| 1 0.0MM | ||||
| 12. 0MM |
Ntim:
10 daim / lub thawv yas, 150 hli lossis 175 hli ntev, 1000 daim ib lub thawv.
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