Tig (tungsten inert roj) vuam yog dav tsam raws li tus qauv siv kub rau cov tswv yim tshav kub kub {tseem ceeb heev thiab cov khoom siv tshuab. Tsis zoo li Mig lossis lo vuam, tig txoj kev cia siab rau ceev faj kev kho kom haum rau lub stainless hlau qib, thickness, thiab vuam txoj haujlwm. Qhov "zoo tshaj plaws" Cov lus qhia no rhuav tshem cov chaw tseem ceeb thiab kev kho kom haum rau kev ua kom zoo nkauj stainless hlau Tig Welds.
Hom tam sim no thiab polarity
Stainless Hlau Tig Vuam yuav tsum tau DC ncaj polarity (DCSP), qhov twg lub tungsten electrode thiab workpiece yog qhov zoo. Cov teeb tsa no ua kom muaj cua sov hauv cov hlau hlau (tsis yog electrode), kom muaj kev nkag mus rau txaus thaum txo qis tungsten erosion {}} Qhov teeb meem uas muaj lwm yam polarities. DCSP kuj tseem pab tswj kev ruaj ntseg ntawm arc, uas yog qhov tseem ceeb rau kev tsim kom huv si weld hlaws dai. Ac tam sim no, siv rau txhuas vuam, yog qhov tsis tsim nyog rau cov hlau tsis muaj zog thiab tuaj yeem ua rau arc instability thiab luv luv, yog li nws yuav tsum zam.
Amperage: txuam kev kub ua kom sov
Kev thauj mus los yog qhov chaw tseem ceeb tshaj plaws, vim nws tswj cov lus tawm thaum tshav kub. Stainless hlau {{}}} Tshwj xeeb tshaj plaws qib siab (cov roj ntsha Lub hom phiaj yog siv qis tshaj plaws amperage uas yuav tsum tau ua kom tiav kev lom zem tsis muaj kev hlawv los ntawm cov khoom siv nyias nyias lossis overheating thicker ntu.
Nyias - gauge hlau steel hlau (0.02-0.15 nti): 50-150 amps. Rau 0.06 {- nti 304 stainless hlau, pib nrog 80-100 amps. Kev txo nqi amperage (50-70 amps) yog qhov zoo rau 0.02-0.04-inch khoom los tiv thaiv kev hlawv-los.
Nruab Nrab - scehe (0.125-0.25 nti): 150-250} nti tuab 316 stainless hlau tev tau 180-220 amps rau kev nkag mus zoo.
Tuab - scehe (0.25-0.5 nti): 250-400 amps. Rau 0.5-nti cov khoom, preheating rau 300-500℃f tej zaum tseem xav tau kom ntseeg tau tias fusion, tab sis kev hloov chaw tseem yog thawj tsav tsheb ntawm cov lus qhia tshav kub.
Nco ntsoov kuaj cov chaw ntawm cov khoom seem ntawm tib qib thiab tuab ua ntej vuam kawg workpiece. Yog tias Weld Bead yog qhov tsis xwm yeem, muaj undercut, lossis lub taub hau yog discolored (bluish lossis dub), txo cov amperage. Yog tias nkag mus tsis txaus, nce nws maj (5-10 amps nyob rau ib lub sijhawm).
Tiv Thaiv Roj
Stainless hlau yog qhov ua rau muaj paug los ntawm oxygen, nitrogen, thiab hydrogen nyob rau hauv huab cua, uas tuaj yeem ua rau porosity, oxide suav nrog, lossis txo corrosion tsis kam. Cov kev tiv thaiv cov roj zoo tshaj plaws rau stainless hlau Tig vuam yog dawb huv Argon (99.99% Purity). Nws muab arc zoo heev, tiv thaiv cov pas dej Weld Rau cov khoom siv thicker (tshaj 0.25 nti) lossis thaum sib xyaw ntawm 98%}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}} Argon yog nyiam rau cov ntawv thov feem ntau.
Cov roj ntws roj yog ib qho tseem ceeb:
Rau cov ntaub ntawv txog li 0.25 nti tuab: 15-20 cubic feet ib teev (cfh).
Rau cov khoom siv thicker lossis sab nraum zoov / thaj chaw muaj pa: 20-25 cfh rau kev tawm tsam roj dispersion.
Cov roj av lub cev collet lub cev (es tsis txhob siv cov roj txheem ntau ntxiv, kom ua rau muaj kev kub ntxhov thiab txhim kho kev kub ntxhov thiab kev ua kom tsis txhob muaj qhov porosity hauv stainless hlau.
Tungsten Electrode xaiv
Yuav tsum xaiv hluav taws xob tungenodes yuav tsum tau xaiv rau lawv lub peev xwm los tswj cov arc ruaj khov ntawm qhov yuav tsum tau txais amperage. Rau Stainless Hlau Tig Vuam:
2% ntseeg tau tungsten (red taub): ib qho kev xaiv ntau ntxiv rau 100-300 amps. Nws muaj cov arc zoo pib thiab ruaj khov, ua rau nws haum rau feem ntau stainless hlau thicknesses. Lus Cim: Thiaj tungsten yog rorolactive hauv nws daim ntawv nyoos, yog li lis nrog thiab ua raws li cov lus qhia kev nyab xeeb.
2% labthehanated tungsten (xiav taub): tsis yog- Qhov kev ua tau zoo sib xws nrog kev ua kom zoo sib xws, zoo tagnrho rau 50-400 AMPS. Nws ua haujlwm tau zoo rau ob qho tib si nyias thiab tuab stainless hlau thiab dhau los ua tus qauv kev lag luam.
Qhov loj me: 1/16-inch inch rau 50-150 cov ntaub ntawv amps (cov khoom siv nyias), 3/2-nti rau 150-300, thiab 1 / nti rau 300-400 amps (tuab).
Tungsten npaj yog tus yuam sij: zom rau lub ntsej muag ntse (30-60℃lub ntsej muag) rau DCSP, ua kom meej qhov ntxeev yog cov kab nrib pleb. Ib lub taub cev yuav ua rau arc wandering, thaum ib tug heev- Cov taub ntse tuaj yeem ua rau tungsten suav nrog WELD.
Muab tub lim hlau thiab taug kev nrawm
Thaum tsis yog "teeb tsa" ib se, muab cov hlau thiab taug kev tsheb khiav ceev nrog cov chaw tos kom muaj kev cuam tshuam weld zoo. Siv cov tub lim hlau sib phim rau lub stainless hlau qib: ER308L rau 304, ER316L rau 316, thiab lwm yam Power
Kev mus ncig ua si yuav tsum muaj raws li: dhau qeeb qeeb thiab kub ua kom zoo, ua rau muaj teeb meem kev uaz; nrawm thiab nkag siab dhau kev txom nyem. Txoj cai zoo yog txav ntawm tus nqi uas ua rau weld hlaws 1.5-2 npaug ntawm cov tub lim hlau txoj kab uas hla. Piv txwv li, nrog 1/8-nti muab tub lim, tsom rau txoj hlua khi ntawm 3 / 16-1 / 4 nti.
Cov Lus Qhia Ntxiv Rau Qhov Kev Rov Qab
Tshaj tawm - Flow roj: teeb pos: 1}}}}}}}}}} new yauv, tiv thaiv oxidation ntawm cov hlau kub. Qhov no yog qhov tshwj xeeb tshaj yog rau kev tswj hwm corrosion tsis kam.
Ko Taw Tswj: Siv ko taw pedal los kho cov amperage dynamically {}} crank kom tsis txhob muaj "kev ntse" uas cuab tam tus neeg ntxiab porcase.
Kev nyiam huv: Xyuas kom lub hauv paus pib, muab tub lim, thiab tungsten yog pub dawb ntawm cov roj, xeb, lossis oxides. Txawm tias cov paug tsis me me tuaj yeem ua rau muaj feem coob lossis tshem tawm hauv Weld.
Hauv cov ntsiab lus, qhov zoo tshaj plaws TIG chaw rau Stainless hlau xub thawj tswj kev tawm suab sov, ruaj khov arc kev tiv thaiv. Pib nrog DC ncaj polarity, Ntshiab Dawb Huv Argon ntawm 15-25 CFH, thiab Amperage Matched rau cov khoom tuab (50-400 amps). Khub cov no nrog 2% linthhanated lossis ntseeg lub tungsten, thiab kho cov kev siv ko taw ko taw rau kev ntsuas. Los ntawm kev sib npaug ntawm cov chaw no, koj yuav ua tiav cov chaw welds uas muaj zog, corrosion {{{{9} Khaws txhua tus qauv uas ua rau cov khoom siv tsis muaj txiaj ntsig.
