Vuam tam sim no, voltage thiab vuam ceev yog lub zog tseem ceeb uas txiav txim siab qhov loj me.
1. Vuam tam sim no
Thaum lub vuam tam sim no nce (lwm cov xwm txheej tseem tsis hloov), qhov nkag mus tob thiab seem qhov siab ntawm qhov vuam nce, thiab qhov dav melting tsis hloov ntau (los yog nce me ntsis).Qhov no yog vim:
(1) Tom qab qhov tam sim no nce, lub zog arc thiab cov cua kub nkag rau ntawm qhov chaw ua haujlwm nce, qhov chaw ntawm cov cua sov txav mus, thiab qhov nkag mus tob zuj zus.Qhov tob tob yog ze li proportional rau qhov vuam tam sim no.
(2) Tom qab qhov tam sim no nce, cov nyiaj melting ntawm cov vuam hlau nce yuav luag proportionally, thiab qhov seem seem nce vim qhov dav melting yuav luag tsis hloov.
(3) Tom qab qhov tam sim no nce, txoj kab uas hla ntawm arc kem nce, tab sis qhov tob ntawm lub arc submersible mus rau hauv lub workpiece nce, thiab lub zog ntau ntawm cov arc qhov chaw yog txwv, yog li lub melting dav yuav luag tsis hloov.
2. Arc voltage
Tom qab qhov hluav taws xob arc nce, lub zog arc nce, qhov hluav taws xob tawm ntawm qhov chaw ua haujlwm nce, thiab qhov ntev ntawm lub arc yog lengthened thiab lub vojvoog tis nce, yog li qhov nkag mus rau qhov tob me ntsis thiab qhov dav melting nce.Qhov seem qhov siab txo qis, vim qhov dav melting nce, tab sis lub melting npaum li cas ntawm cov vuam hlau txo me ntsis.
3. Vuam ceev
Thaum lub vuam ceev nce, lub zog txo qis, thiab qhov tob tob tob thiab nkag mus dav yuav txo.Qhov seem qhov siab kuj raug txo, vim hais tias tus nqi ntawm deposition ntawm hlau hlau nyob rau hauv weld ib chav tsev ntev yog inversely proportional rau lub vuam ceev, thiab lub melting dav yog inversely proportional rau lub square ntawm vuam ceev.
qhov twg U sawv cev rau qhov vuam voltage, kuv yog qhov vuam tam sim no, qhov tam sim no cuam tshuam rau qhov tob tob, qhov hluav taws xob cuam tshuam rau qhov dav melting, qhov tam sim no muaj txiaj ntsig zoo rau kev kub hnyiab los ntawm qhov tsis muaj hluav taws xob, qhov hluav taws xob muaj txiaj ntsig zoo rau qhov tsawg kawg nkaus spatter, ob kho ib qho. ntawm lawv, kho lwm yam parameter tuaj yeem welding qhov loj ntawm qhov tam sim no muaj kev cuam tshuam zoo rau kev vuam zoo thiab vuam tsim tau.
Qhov vuam tam sim no feem ntau cuam tshuam qhov loj ntawm qhov nkag.Tam sim no me me dhau lawm, lub arc tsis ruaj khov, qhov tob tob yog me me, nws yog ib qho yooj yim los ua qhov tsis xws luag xws li kev nkag mus tsis tau thiab slag suav nrog, thiab cov khoom tsim tau tsawg;Yog tias qhov tam sim no loj dhau, qhov vuam yog qhov ua rau muaj qhov tsis xws luag xws li undercut thiab hlawv-los ntawm, thiab tib lub sijhawm ua rau tawg.
Yog li ntawd, cov vuam tam sim no yuav tsum raug xaiv kom tsim nyog, thiab feem ntau nws tuaj yeem xaiv raws li cov qauv empirical raws li txoj kab uas hla ntawm cov electrode, thiab tom qab ntawd hloov kho raws li txoj haujlwm vuam, sib koom ua ke, vuam theem, vuam thickness, thiab lwm yam.
Lub arc voltage yog txiav txim los ntawm qhov ntev arc, lub arc yog ntev, thiab lub arc voltage yog siab;Yog hais tias lub arc yog luv, lub arc voltage yog tsawg.Qhov loj ntawm qhov arc voltage feem ntau cuam tshuam rau lub melting dav ntawm lub vuam.
Lub arc yuav tsum tsis txhob ntev heev thaum lub sij hawm vuam txheej txheem, txwv tsis pub, lub arc combustion yog tsis ruaj tsis khov, ua rau lub spatter ntawm cov hlau, thiab nws kuj yuav ua rau porosity nyob rau hauv lub weld vim invasion ntawm huab cua.Yog li ntawd, thaum welding, siv zog siv luv luv arcs, thiab feem ntau xav kom lub arc ntev tsis tshaj lub cheeb ntawm lub electrode.
Qhov loj ntawm vuam ceev yog ncaj qha ntsig txog cov khoom tsim ntawm vuam.Txhawm rau kom tau txais qhov siab tshaj plaws vuam ceev, qhov loj dua electrode txoj kab uas hla thiab vuam tam sim no yuav tsum tau siv nyob rau hauv qhov chaw ntawm kev ua kom zoo, thiab qhov vuam ceev yuav tsum tau kho kom haum raws li qhov xwm txheej tshwj xeeb kom ntseeg tau tias qhov siab thiab qhov dav ntawm qhov vuam yog ua raws li ntau li ntau tau.
1. luv Circuit Court hloov vuam
Kev hloov pauv luv luv hauv CO2 arc vuam yog qhov siv dav tshaj plaws, feem ntau yog siv rau nyias phaj thiab tag nrho txoj haujlwm vuam, thiab cov kev qhia tshwj xeeb yog arc voltage vuam tam sim no, vuam ceev, vuam Circuit Court inductance, roj ntws thiab vuam hlau ntev. .
(1) Arc voltage thiab vuam tam sim no, rau qee qhov vuam hlau txoj kab uas hla thiab vuam tam sim no (uas yog, xaim pub ceev), yuav tsum ua kom haum rau qhov tsim nyog arc voltage thiaj li yuav tau txais cov txheej txheem luv luv luv luv, lub sijhawm no tus spatter yog tsawg kawg.
(2) Vuam Circuit Court inductance, lub luag haujlwm tseem ceeb ntawm inductance:
ib.Kho qhov kev loj hlob ntawm luv luv-circuit tam sim no di / dt, di / dt me me dhau los ua rau cov khoom loj los txaws kom txog rau thaum ib feem loj ntawm cov vuam hlau tawg thiab cov arc raug tua, thiab di / dt loj dhau los ua ib qho coob tus me me ntawm cov hlau spatter.
b.Kho lub sijhawm arc hlawv thiab tswj kev nkag mus ntawm lub hauv paus hlau.
c.Vuam ceev.Kev vuam ceev heev yuav ua rau cov npoo ntawm ob sab ntawm lub vuam, thiab yog tias qhov vuam ceev qeeb dhau lawm, cov teeb meem xws li kub hnyiab-dhau thiab coarse weld qauv yuav yooj yim tshwm sim.
d .Cov roj ntws yog nyob ntawm yam xws li kev sib koom ua ke phaj thickness, vuam specifications thiab kev ua haujlwm.Feem ntau, cov roj ntws tawm yog 5-15 L / min thaum vuam hlau zoo, thiab 20-25 L / min thaum vuam tuab hlau.
e.Hlau extension.Qhov tsim nyog xaim ncua ntev yuav tsum yog 10-20 npaug ntawm txoj kab uas hla ntawm vuam hlau.Thaum lub sij hawm vuam txheej txheem, sim ua kom nws nyob rau hauv thaj tsam ntawm 10-20mm, qhov ntev txuas ntxiv nce, qhov vuam tam sim no txo qis, kev nkag mus ntawm lub hauv paus hlau txo, thiab rov qab, qhov tam sim no nce thiab kev nkag mus tau nce.Qhov ntau dua qhov kev tiv thaiv ntawm vuam hlau, qhov pom tseeb dua qhov no yog.
f.Fais fab mov polarity.CO2 arc vuam feem ntau txais DC thim rov qab polarity, me me spatter, arc ruaj khov puag hlau nkag yog loj, zoo molding, thiab cov ntsiab lus hydrogen ntawm cov hlau weld yog tsawg.
2. Fine-particle hloov.
(1) Hauv cov pa roj carbon monoxide, rau qee txoj kab uas hla ntawm vuam hlau, thaum tam sim no nce mus rau ib qho nqi thiab nrog rau lub siab arc siab dua, cov hlau molten ntawm vuam hlau yuav ya dawb mus rau hauv lub pas dej molten nrog me me, thiab daim ntawv hloov pauv no yog ib qho kev hloov pauv zoo.
Thaum lub sij hawm hloov ntawm cov khoom zoo, lub arc nkag mus yog muaj zog, thiab lub hauv paus hlau muaj qhov tob tob tob, uas yog tsim rau nruab nrab thiab tuab phaj vuam qauv.Txoj kev thim rov qab DC kuj tseem siv tau rau kev hloov pauv hloov vuam zoo.
(2) Raws li qhov tam sim no nce, qhov hluav taws xob arc yuav tsum tau nce ntxiv, txwv tsis pub lub arc muaj kev cuam tshuam ntawm cov hlau hauv pas dej ua ke, thiab cov vuam sib sau ua rau tsis zoo, thiab qhov tsim nyog nce ntawm arc voltage tuaj yeem zam qhov tshwm sim no.Txawm li cas los xij, yog tias qhov hluav taws xob arc siab dhau lawm, cov txaws yuav nce ntxiv, thiab nyob rau hauv tib lub tam sim no, lub arc voltage txo qis raws li txoj kab uas hla ntawm vuam hlau nce.
Muaj qhov sib txawv loj ntawm CO2 qhov kev hloov pauv zoo thiab kev hloov dav hlau hauv TIG vuam.Kev hloov dav hlau hauv TIG vuam yog axial, thaum qhov hloov pauv zoo hauv CO2 tsis yog axial thiab tseem muaj qee cov hlau tawg.Tsis tas li ntawd, lub dav hlau hloov pauv ciam teb tam sim no hauv argon arc vuam muaj cov yam ntxwv txawv txav.(tshwj xeeb tshaj yog welded stainless hlau thiab ferrous hlau), thaum zoo-grained hloov tsis.
3. Kev ntsuas kom txo cov hlau txaws
(1) Kev xaiv cov txheej txheem tsis raug, vuam arc voltage: Rau txhua txoj kab uas hla ntawm vuam hlau nyob rau hauv arc, muaj qee txoj cai ntawm tus nqi spatter thiab vuam tam sim no.Hauv cheeb tsam me me tam sim no, luv-circuit
Kev hloov pauv txaws yog me me, thiab tus nqi txaws mus rau hauv cheeb tsam loj tam sim no (zoo particle hloov pauv cheeb tsam) kuj yog me me.
(2) Lub kaum sab xis vuam: lub vuam teeb muaj qhov tsawg kawg nkaus ntawm spatter thaum nws ntsug, thiab qhov loj dua lub kaum sab xis, qhov ntau dua qhov tawg.Nws yog qhov zoo tshaj plaws kom tig rab phom vuam rau pem hauv ntej lossis rov qab tsis tshaj 20 degrees.
(3) Vuam hlau txuas ntxiv ntev: Qhov ntev ntawm vuam hlau txuas ntxiv muaj qhov cuam tshuam zoo rau qhov tawg, qhov ntev ntawm vuam hlau txuas ntxiv yog nce los ntawm 20 mus rau 30 hli, thiab tus nqi ntawm spatter nce li ntawm 5%, yog li qhov txuas ntxiv. ntev yuav tsum luv kom ntau li ntau tau.
4. Ntau hom shielding gases muaj ntau txoj kev vuam.
(1) Txoj kev vuam siv CO2 roj raws li kev tiv thaiv roj yog CO2 arc vuam.Lub preheater yuav tsum tau muab tso rau hauv cov khoom cua.Vim tias cov kua CO2 absorbs ib tug loj npaum li cas ntawm tshav kub zog thaum lub sij hawm tas mus li gasification, lub ntim expansion ntawm cov roj tom qab depressurization los ntawm lub siab reducer kuj yuav txo tau cov roj kub, thiaj li yuav tiv thaiv cov ya raws nyob rau hauv lub CO2 roj los ntawm khov nyob rau hauv lub tog raj kheej qhov hluav taws xob thiab siab txo valve thiab thaiv cov roj txoj kev, yog li cov roj CO2 yog rhuab los ntawm lub preheater ntawm lub tog raj kheej qhov hluav taws xob thiab lub siab txo.
(2) Cov txheej txheem vuam ntawm CO2 + Ar gas li shielding gas MAG vuam txoj kev hu ua lub cev tiv thaiv roj.Txoj kev welding no yog tsim rau stainless hlau vuam.
(3) Ar raws li MIG vuam txoj kev rau roj shielded vuam, txoj kev vuam no yog tsim rau txhuas thiab txhuas alloy vuam.
Post lub sij hawm: May-23-2023