Nrog rau kev loj hlob sai ntawm kev lag luam petrochemical, cov ntaub ntawv stainless hlau tau siv dav, uas tseem tau muab cov kev xav tau siab dua rau kev vuam ntawm cov kav dej thiab cov phaj.Yav dhau los stainless hlau arc vuam primer txoj kev tau maj mam tshem tawm, thiab argon arc vuam yog siv rau primer vuam.
Argon arc vuam primer yog huv si thiab sai dua arc vuam primer.Tib lub sijhawm, muaj qee qhov teeb meem.
Thaum lub sij hawm vuam txheej txheem, txij li lub nraub qaum ntawm stainless hlau argon arc vuam puag yog yooj yim oxidized thiab ua rau tsis xws luag, kev tiv thaiv rov qab yuav tsum tau coj los xyuas kom meej cov neeg kho tshuab zog thiab corrosion kuj ntawm lub vuam.Yog li ntawd, kev tiv thaiv zoo yuav tsum tau ua thaum vuam stainless hlau.
Niaj hnub no peb qhia ob peb feem ntau siv stainless hlau vuam rov qab txoj kev tiv thaiv:
01
Rov qab Argon Protection Method
Feem ntau siv cov roj tiv thaiv tuaj yeem muab faib ua cov roj argon yooj yim tiv thaiv thiab kev tiv thaiv roj sib xyaw.Ib qho kev faib ua feem ntawm argon-nitrogen sib xyaw roj yog qhov tsim nyog rau austenitic stainless hlau vuam.Qee cov roj inert tsis siv vim lawv cov nqi siab.
Argon filling method tiv thaiv yog ib txoj kev tiv thaiv rov qab ib txwm muaj, uas muaj cov yam ntxwv ntawm kev tiv thaiv rov qab zoo dua, yooj yim rau tus tswv, kev huv siab, thiab kev sib tw siab.Nws tau muab faib ua kev tiv thaiv npog argon filling tiv thaiv txoj kev, hauv zos argon filling tiv thaiv txoj kev, ncaj qha txhaws ntawm vuam sib koom, argon vuam txoj kev tiv thaiv, thiab lwm yam.
1. Kev tiv thaiv npog puv nrog argon tiv thaiv txoj kev
Txoj kev no feem ntau yog siv rau hauv stainless hlau vuam ntawm daim hlau thiab cov kav dej loj.Lub npog tiv thaiv yog txuas nrog cov yeeb nkab hlau thiab lub argon roj hose.Lub argon gas valve yog qhib los sau lub npog tiv thaiv nrog argon roj.
Lwm tus neeg yuav tsum tau tuav cov yeeb nkab hlau ua tus kov kom lub npog tiv thaiv swb rau ntawm lub pas dej molten nyob rau sab nraub qaum hauv synchronization nrog cov vuam sab nraud ntawm lub phaj lossis cov yeeb nkab.
Nyob rau hauv txoj kev no, sab nraub qaum yog kev tiv thaiv zoo, thiab kev tiv thaiv yog concentrated.Cov roj argon tsis tas yuav tsum tau qhib ntau dhau, thiab cov roj argon tau siv tsawg dua.
2. Local argon filling tiv thaiv
Nws yog ib qho yooj yim los siv kev tiv thaiv hauv zos rau cov kav dej nrog qhov chaw me me hauv zos thiab qhov ntev dua.
Txoj kev: Seal lub vuam sib txuas ntawm cov yeeb nkab nrog daim kab xev (kom tiv thaiv cov pa tawm).Muab ob qhov kawg ntawm cov yeeb nkab nrog daim txhuam cev, roj hmab, daim ntawv plhaub, thiab lwm yam. Ntxig lub argon hose los ntawm ib kawg thiab sau nrog argon.Lwm qhov kawg ntawm cov yeeb nkab yog qhov zoo tshaj plaws kaw.Laum ib lub qhov me me (tsis xav tau daim txhuam cev), uas yuav pab txhawb kev sib koom ua ke kawg thiab yuav tsis ua rau cov dents vim yog lub siab sab hauv.
Thaum lub sij hawm vuam, txhawm rau tiv thaiv kom tsis txhob muaj roj ntau ntawm argon tawm ntawm qhov vuam seam, lub vuam sealing daim kab xev yuav tsum tau rhais tawm thiab welded nyob rau hauv cov seem, uas yuav txo tau cov roj argon ntxiv thiab zoo tiv thaiv vuam seam.Nta yog khib, argon them qeeb, tus nqi siab dhau lawm, thiab lwm yam.
3 .Direct argon filling tiv thaiv txoj kev rau vuam sib koom ua ke
Rau cov kav xa dej uas ntev dhau lawm thiab muaj qhov loj me me, lub hauv paus argon filling yog qhov tsis zoo, tsis tuaj yeem lav qhov zoo, thiab qhov project nqi siab dhau lawm.Yuav kom txuag tau tus nqi, txoj kev ncaj qha argon filling txoj kev ntawm cov welded sib koom siv tau.
Txoj kev ua plugs ntawm ob sab ntawm weld seam
Txheej daim txhuam cev rau hauv ib lub ntsaws nrog ib txoj kab uas loj me ntsis rau cov yeeb nkab thiab txuas ob daim ntawm daim txhuam cev nrog ib tug hlau ntawm qhov deb ntawm 300-400mm los ua ob lub ntsaws.Ib qho kawg ntawm lub ntsaws yog txuas nrog ib daim hlau ntev dua.
Thaum sib txuam, muab cov ntsaws ntsaws rau ntawm 150-200mm ntawm ob sab ntawm cov welded rau welded.Qhov ntev hlau hlau ntawm ib kawg yuav tsum ntev tshaj qhov ntev ntawm cov yeeb nkab ntawm ib qho kawg ntawm qhov vuam thiab nthuav tawm cov yeeb nkab kawg.Ib kawg ntawm cov yeeb nkab hlau me me yuav tsum flattened thiab lwm qhov kawg yuav tsum tau txuas nrog argon hose.Ntxig lub flattened kawg mus rau hauv lub aligned weld thiab sau nws nrog argon.Cov kev taw qhia zoo tshaj plaws yog qhov siab tshaj plaws, yog li ua ntej qhov kawg sib koom ua ke ntawm cov hauv qab vuam, lub raj me me tuaj yeem rub tawm thiab welded los ntawm cov roj seem hauv cov yeeb nkab.Tom qab vuam, siv hlau los rub tawm lub ntsaws.
Dej soluble ntawv tiv thaiv txoj kev
Ua ntej sib sau ua ke, affix dej-soluble ntawv ntawm 150-200mm ntawm ob sab ntawm lub vuam sib koom ua ib lub foob.Tom qab kev sib raug zoo, siv tib txoj kev inflatable welding raws li daim txhuam cev ntsaws.Thaum lub raj xa dej raug sim rau hydraulic siab, cov ntawv dej-soluble yuav yaj thiab tawm nrog dej.
4. Argon roj tiv thaiv kev txiav txim
Cov nyhuv tiv thaiv ntawm argon roj tuaj yeem raug txiav txim raws li cov xim ntawm cov khoom siv sab hauv, kom tus neeg teb xov tooj tuaj yeem kho cov roj argon raws li xim kom ua tiav qhov kev tiv thaiv zoo tshaj plaws.Cov xim yog dawb thiab golden, thiab grey thiab dub yog qhov phem tshaj.
5. Kev ceev faj rau kev tiv thaiv stainless hlau rov qab
(1) Ua ntej argon arc vuam, sab nraub qaum ntawm qhov vuam yuav tsum tau tiv thaiv los ntawm kev sau nws nrog argon ua ntej.Tus nqi ntws yuav tsum loj dua.Tom qab huab cua tawm lawm, tus nqi ntws yuav maj mam txo.Thaum lub sij hawm vuam txheej txheem, cov yeeb nkab yuav tsum tau ntim nrog argon tsis tu ncua.Lub argon hose tuaj yeem raug tshem tawm tsuas yog tom qab vuam tiav kom cov vuam zoo tiv thaiv.
Tsis tas li ntawd, kev saib xyuas tshwj xeeb yuav tsum tau them rau qhov tseeb tias vuam tuaj yeem ua tau tsuas yog tom qab cua txias, txwv tsis pub cov kev tiv thaiv ntawm argon filling yuav raug cuam tshuam.
(2) argon gas flow rate yuav tsum tsim nyog.Yog tias tus nqi ntws tsawg dhau, kev tiv thaiv tsis zoo, thiab sab nraub qaum ntawm cov vuam yog yooj yim oxidized;Yog tias tus nqi ntws loj dhau lawm, qhov tsis xws luag xws li concavity ntawm lub hauv paus ntawm lub vuam yuav tshwm sim, cuam tshuam rau vuam zoo.
(3) Lub qhov hluav taws xob argon yuav tsum muab tso rau hauv qhov tsawg li tsawg tau nyob rau hauv qhov chaw kaw, thiab lub qhov tso pa tawm yuav tsum tau muab tso rau hauv qhov siab me ntsis hauv cov yeeb nkab kaw.Vim tias argon hnyav dua li huab cua, sau cov argon los ntawm txoj haujlwm qis tuaj yeem ua kom muaj qhov siab dua, thiab kev tiv thaiv ntawm argon filling yuav zoo dua.
(4) Txhawm rau txo qhov poob ntawm cov roj argon hauv cov yeeb nkab los ntawm qhov sib txawv ntawm cov pob qij txha, uas cuam tshuam rau kev tiv thaiv kev tiv thaiv thiab nce tus nqi, daim kab xev tuaj yeem muab khi rau ntawm qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txuas ua ntej vuam, tsuas yog qhov ntev. rau ib qho txuas txuas ntxiv los ntawm cov welder, thiab tshem cov kab xev thaum vuam.
02
Self-shielding vuam hlau tiv thaiv txoj kev
Kev tiv thaiv tus kheej welding hlau nyob rau tom qab yog ib qho vuam hlau nrog txheej txheej.Thaum lub sij hawm vuam, nws cov txheej tiv thaiv yuav koom nrog kev tiv thaiv tag nrho ntawm sab xub ntiag thiab sab nraub qaum ntawm lub pas dej molten, tsim cov txheej txheej tiv thaiv kom tsis txhob rov qab ntawm cov hlaws weld los ntawm oxidized.Cov txheej tiv thaiv no yuav cia li poob tawm tom qab txias, thiab yuav raug purged thiab sim thaum lub sij hawm ntsuas siab.yuav raug tshem tawm.
Txoj kev siv ntawm hom vuam hlau no yeej ib txwm zoo ib yam li qhov zoo tib yam argon arc vuam khoom tub ntxhais hlau, thiab kev ua haujlwm ntawm cov hlau vuam tuaj yeem ua tau raws li qhov yuav tsum tau ua.
Kev tiv thaiv tus kheej welding hlau tsis txwv los ntawm ntau yam vuam, ua rau vuam npaj sai thiab yooj yim dua.Txawm li cas los xij, vim yog txheej txheej ntawm cov hlau vuam, yuav muaj qee qhov tsis xis nyob thaum cov neeg ua haujlwm vuam ua haujlwm.
Vim yog qhov tsis sib xws thiab cov txheej txheem vuam tsis haum rau cov hlau coated welding, qhov tsis xws li concavities qee zaum tshwm sim.Yog li ntawd, muaj qee yam yuav tsum tau ua rau cov neeg ua haujlwm vuam kev ua haujlwm thiab cov txheej txheem.Self-shielding hlau yog qhov zoo tshaj plaws siv rau primers vim nws cov nqi siab.
Tsis tas li ntawd, muaj ntau hom kev tiv thaiv tus kheej welding hlau nyob rau hauv kev ua lag luam xaiv los ntawm, thiab lawv cov kev siv kuj txawv.
Post lub sij hawm: Sep-21-2023