Hauv Argon arc vuam ua haujlwm, kev ua tau zoo ntawm tungsten hluav taws xob yog hais txog kev siv vuam zoo, ua tau zoo thiab yog ib qho ntawm cov kev ua tiav lossis tsis ua tiav ntawm vuam. Lub ntiaj teb tsawg doped hauv tungsten hluav taws yuav hloov pauv lawv cov khoom ntau ntau, thiab yog li muaj ntau qhov kev cuam tshuam ntawm cov txheej txheem vuam.
1. Qhov tseem ceeb ntawm lub ntiaj teb tsis tshua muaj roj oxide doping rau kev ua tau zoo ntawm tungsten electrodes
Lub ntiaj teb tsis tshua muaj kev ua cov ntaub ntawv doping zoo tshaj plaws rau kev txhim kho cov qauv ntawm tungsten electrodes thiab tshuaj fais fab hluav taws xob thiab tshuaj lom neeg. Tom qab doping tungsten elegsten elegsten cov hluav taws xob nrog rau lub ntiaj teb tsis tshua muaj xws li lawv lub peev xwm hluav taws xob muaj peev xwm, thiab arc ruaj khov txhim kho. Ntau hom ntawm lub ntiaj teb tsawg muaj cov lus qhia sib txawv thiab kev txhim kho kev txhim kho hauv kev ua tau zoo ntawm tungsten hluav taws xob vim muaj cov qauv tshuaj thiab tshuaj.
2. Tib lub tshuab hluav taws xob tsis tshua muaj hluav taws xob nrog lub ntiaj teb tsawg thiab lawv cov kev cuam tshuam rau Argon arc vuam
(I) Cerium tungsten electrode(CEO₂-W)
Cerium Tungsten Electrode yog qhov dav siv Tungsten electrode, thiab nws doped tsis tshua muaj roj av oxide yog cerium oxide (CEO₂).
Nws ua tau zoo hauv Arc ruaj khov. Nws tuaj yeem tswj cov arc ruaj khov nyob rau hauv ntau cov ntau tam sim no, thiab tsis yog tus arc drift thiab tua hluav taws xob thiab tua pov tseg. Qhov no yog qhov tshwj xeeb tshaj yog rau cov phaj nyias vuam, ua kom yog vuam, thiab lwm yam scenes, thiab tuaj yeem txo kev vuam tsis zoo los ntawm arc tsis muaj peev xwm.
Nws yog ib qho yooj yim thiab txhim khu kev qha pib lub arc. Txawm hais tias nws yog DC lossis AC
Thaum lub sij hawm ntev ntev, lub electrode kawg coj qeeb, uas tuaj yeem txuas ntxiv lub neej pabcuam, txo cov kev hloov chaw ntawm electrode, thiab txo cov nqi ntau lawm. Nyob rau tib lub sijhawm, nws qhov tsawg heev, thiab nws muaj ntau txoj kab nrog kev tiv thaiv ib puag ncig thiab cov qauv kev nyab xeeb tshaj li thorium tungsten electrodes. Nws yog tus tsim nyog hauv thaj chaw thiab kev lag luam nrog kev tiv thaiv kev tiv thaiv siab.
(Ii)Lanthant Tungsten electrode(La₂o₃-w)
Lanthhanum Tungsten Electrode siv Lanthhanum oxide (La₂o₃) raws li dopant. Nws muaj arc siab thiab muaj lub zog siab ceev. Nws tuaj yeem ua rau lub weld nkag mus tob thiab ntau yam hnav tsoos thaum vuam vuam. Rau tuab phaj vuam los yog workpieces uas yuav tsum tau ua kom muaj zog dua vuam muaj zog, nws tuaj yeem paub meej tias cov khoom siv tshuab hluav taws xob ntawm Weld.
Lanthhanum Tungsten electrode Muaj lub zog muaj peev xwm tam sim no thiab tuaj yeem siv rau kev ua haujlwm vuam ua haujlwm nrog loj dua. Nws tseem tuaj yeem tswj tau ruaj khov nyob rau hauv cov dej khov loj hauv qab thiab tsis yog tus dhau los ua kev kub ntxhov lossis hlawv. Ib qho ntxiv, nws cov recrystallization kub yog siab. Tom qab kev sib ntaus kub siab, nws microstructure thiab cov khoom tsis tau muaj kev hloov pauv tseem ceeb. Nws tuaj yeem tswj kev ua kom zoo vuam ua tau zoo ntev thiab muaj lub neej ntev kev pabcuam.
(Iii)Thorium tungsten electrode(Tho-w)
Lub thorium tungsten electrode yog ib zaug dav siv vim nws cov hluav taws xob zoo emission ua tau zoo thiab arc ruaj khov. Nws cov doped thorium oxide (thof) tuaj yeem txhim kho lub tshuab nqus hluav taws xob muaj peev xwm ntawm lub tungsten electrode. Nws tuaj yeem tswj lub arc ruaj khov thaum lub siab vuam thiab muaj qhov muaj zog nqa khoom muaj zog tam sim no, uas haum rau qee qhov kev siv vuam hnyav.
Txawm li cas los xij, vim lub radioactivity ntawm thorium oxide, uas ua rau muaj kev phom sij rau tib neeg thiab thaj chaw ib puag ncig kev noj qab haus huv lossis kev txwv tsis pub siv. Saib xyuas tshwj xeeb yuav tsum tau them rau cov kev tiv thaiv ib puag ncig thiab kev nyab xeeb kev nyab xeeb thaum xaiv nws.
3. Xaiv cov lus qhia
Txiav txim siab vuam cov ntaub ntawv: thaum vuam freals xws li cov hlau roj carbon thiab stainless tungsten electrodes yog ob qho kev xaiv zoo.
Tsom rau Vuam tam sim no: Rau kev precision vuam vuam, cerium tungsten hluav taws xob yog qhov tsim nyog los xyuas kom meej; Rau qhov loj tam sim no hnyav vuam, lanthhanum tungsten electrodes tuaj yeem raug txiav txim siab, lossis ntseeg lub pob hluav taws xob tau raug xaiv yog tias lawv tau raws li cov cai.
Rhais qhov tseem ceeb rau kev tiv thaiv ib puag ncig thiab kev nyab xeeb: hauv thaj chaw muaj kev tiv thaiv kev tiv thaiv ib puag ncig xws li CeeRium tungsten thiab lanthhanum tungsten thiab lanthhant tungsten yuav tsum tau nyiam.
Ua ke nrog tus nqi cuam tshuam: Nyob rau hauv lub neej ntawm kev sib ntsib vuam vuam, tus nqi thiab kev pabcuam lub neej tuaj yeem txiav txim siab tau cov khoom lag luam zoo tshaj plaws.
Raws li tus kws tshaj lij cov khoom lag luam ntawm cov khoom tsis-ferrous hlau, fanmetal tuaj yeem muab cov khoom lag luam electrode, tsis tsuas yog cov saum toj no cov uas tau hais tseg, tab sis kujMolybdenum Electrodes, tungsten tooj liab electrodes, cobalt-based alloy electrodes, thiab lwm yam. Yog tias koj muaj lus nug txog cov khoom no cov ntsiab lus lossis lub sijhawm xa khoom, tsis txhob yig tau mus ntsib nrog peb ntawm {0}}. Peb tos ntsoov rau koj cov lus.
