Yam tsis zoo ntawm cov khoom siv vuam
(1) Lub ntsiab kev tshawb fawb ntawm vuam kev ua haujlwm huv yog fusion vuam, thiab ntawm lawv, cov teeb meem kev ua haujlwm ntawm kev ua haujlwm huv ntawm kev qhib arc vuam yog qhov loj tshaj, thiab cov teeb meem ntawm submerged arc vuam thiab electroslag vuam yog qhov tsawg tshaj plaws.
(2) Cov teeb meem tseem ceeb ntawm cov ntaub ntawv electrode phau ntawv arc vuam, carbon arc gouging thiab CO2 gas shielded vuam yog cov pa taws thiab plua plav tsim thaum lub sij hawm vuam - vuam fume.Tshwj xeeb tshaj yog electrode phau ntawv arc vuam.Thiab cov pa roj carbon arc gouging, yog tias lub vuam ua haujlwm tau ua nyob rau hauv qhov chaw ua haujlwm nqaim (boiler, alarm, airtight thawv thiab pipeline, thiab lwm yam) ntev, thiab nyob rau hauv cov ntaub ntawv ntawm kev tiv thaiv tsis zoo, nws yuav ua rau muaj kev puas tsuaj rau lub cev. ua pa system, thiab lwm yam kev txom nyem los ntawm welding pneumoconiosis.
(3) Cov pa roj carbon monoxide yog ib qho teeb meem loj ntawm cov roj hluav taws xob vuam thiab cov plasma arc vuam, thiab thaum cov concentration siab heev, nws yuav ua rau cov tsos mob lom.Hauv particular, ozone thiab nitrogen oxides yog tsim los ntawm arc kub hluav taws xob ua rau oxygen thiab nitrogen hauv huab cua.
(4) Arc hluav taws xob yog ib qho teeb meem tshwm sim rau txhua qhov qhib arc vuam, thiab cov kab mob electro-optic qhov muag tshwm sim los ntawm nws yog ib qho kab mob tshwj xeeb ntawm kev qhib arc vuam.Arc hluav taws xob kuj tuaj yeem ua rau daim tawv nqaij puas tsuaj, ua rau cov welders raug kev txom nyem los ntawm cov kab mob ntawm daim tawv nqaij xws li dermatitis, erythema thiab hlwv me me.Tsis tas li ntawd, paj rwb fibers puas lawm.
(5) Tungsten argon arc vuam thiab plasma arc vuam, vim hais tias lub vuam tshuab yog nruab nrog lub siab zaus oscillator los pab pib lub arc, muaj teeb meem - high-frequency electromagnetic teb, tshwj xeeb tshaj yog lub vuam tshuab nrog lub sij hawm ua hauj lwm ntev. ntawm lub siab zaus oscillator (xws li Qee lub Hoobkas tsim argon arc vuam tshuab).High-frequency electromagnetic teb tuaj yeem ua rau cov welder raug kev txom nyem los ntawm cov kab mob ntawm cov hlab ntsha thiab cov ntshav.
Vim yog siv cov thoriated tungsten pas nrig electrodes, thorium yog cov khoom siv hluav taws xob, yog li muaj teeb meem ntawm hluav taws xob (α, β thiab γ rays), thiab nws tuaj yeem ua rau muaj kev phom sij ntawm cov khoom siv hluav taws xob nyob ib puag ncig lub grinder qhov twg cov pas nrig thoriated tungsten khaws cia thiab sharpened. .
(6) Thaum lub sij hawm plasma arc vuam, txau thiab txiav, lub suab nrov yuav raug tsim tawm, uas yuav ua rau lub welder lub suab paj nruag puas yog tias kev tiv thaiv tsis zoo.
(7) Cov teeb meem tseem ceeb thaum lub sij hawm siv roj vuam ntawm cov hlau tsis muaj hlau yog cov hmoov av oxide tsim los ntawm cov evaporation ntawm cov hlau molten nyob rau hauv cov huab cua, thiab cov pa phem los ntawm cov flux.
Kev ceev faj rau kev siv cov khoom siv vuam
1. Feem ntau muaj ob hom stainless hlau electrodes: titanium-calcium type thiab low-hydrogen type.Lub vuam tam sim no txais DC fais fab mov kom ntau li ntau tau, uas yog qhov zoo los kov yeej qhov liab thiab qhov tob tob ntawm qhov vuam pas nrig.Electrodes nrog titanium-calcium txheej tsis haum rau txhua txoj haujlwm vuam, tab sis tsuas yog rau vuam thiab tiaj tus fillet vuam;electrodes nrog qis-hydrogen txheej tuaj yeem siv rau txhua txoj haujlwm vuam.
2. Stainless hlau electrodes yuav tsum tau qhuav thaum siv.Txhawm rau tiv thaiv qhov tsis xws luag xws li tawg, pits, thiab pores, titanium-calcium txheej txheej yog ziab ntawm 150-250 ° C rau 1 teev ua ntej vuam, thiab cov txheej txheej hydrogen qis yog qhuav ntawm 200-300 ° C rau. 1 teev ua ntej vuam.Tsis txhob qhuav ntau zaus, txwv tsis pub daim tawv nqaij yuav poob yooj yim.
3. Ntxuav cov vuam sib koom ua ke, thiab tiv thaiv cov vuam pas nrig los ntawm cov roj thiab lwm yam av, kom tsis txhob ua kom cov pa roj carbon ntau ntawm cov vuam thiab cuam tshuam rau vuam zoo.
4. Txhawm rau tiv thaiv kev cuam tshuam ntawm intergranular los ntawm cua sov, qhov vuam tam sim no yuav tsum tsis txhob loj heev, feem ntau yog li ntawm 20% qis dua cov pa roj carbon steel electrodes, lub arc yuav tsum tsis txhob ntev dhau, thiab cov interlayers txias sai heev.
5. Ua tib zoo saib thaum pib lub arc, tsis txhob pib lub arc ntawm qhov uas tsis yog vuam, nws yog qhov zoo dua los siv lub arc pib phaj ntawm tib cov khoom siv vuam los pib lub arc.
6. Short-arc vuam yuav tsum tau siv ntau li ntau tau.Qhov ntev arc feem ntau yog 2-3mm.Yog hais tias lub arc ntev dhau lawm, thermal tawg yuav yooj yim tshwm sim.
7. Thauj sawb: luv-arc ceev vuam yuav tsum tau saws, thiab lateral viav vias feem ntau tsis tso cai.Lub hom phiaj yog txhawm rau txo cov cua sov thiab cov cua sov ua rau thaj tsam dav, txhim kho cov vuam tsis kam rau intergranular corrosion thiab txo qhov nyiam ntawm thermal tawg.
8. Kev sib txuas ntawm cov hlau tsis sib xws yuav tsum ua tib zoo xaiv cov welding rods kom tsis txhob thermal tawg los ntawm kev xaiv tsis raug ntawm vuam rods lossis nag lossis daus ntawm σ theem tom qab kev kho cua sov siab, uas yuav ua rau cov hlau embritted.Xa mus rau cov txheej txheem kev xaiv vuam hlau rau stainless hlau thiab cov hlau tsis sib xws rau kev xaiv, thiab txais yuav cov txheej txheem vuam tsim nyog.
Nyob rau hauv cov nqe lus ntawm kev sib raug zoo, yav tom ntej txoj kev loj hlob ntawm kev sib koom ua ke cov khoom siv yuav maj mam upgrade.Nyob rau hauv lub neej yav tom ntej, phau ntawv cov khoom yuav maj mam hloov los ntawm high-efficiency thiab high-quality khoom nrog ib tug high degree ntawm automation.Cov qauv, sib txawv vuam kev xav tau nyob rau hauv cov kev pab cuam sib txawv.
Post lub sij hawm: Jun-05-2023