Teeb tsa ib tug TIG (Tungsten inert roj) Welder rau cov roj hlau tsis muaj zog, yuav tsum tau ua haujlwm rau kev tiv thaiv cov roj hlau, kom tsis txhob muaj qhov tsis xws luag, tsis txhob muaj qhov tsis xws luag, thiab kom paub tseeb tias muaj zog welds. Tsis zoo li cov hlau me me, hlau stainless yog rhiab rau cov lus tawm cua sov, kev paug, thiab arc stability, yog li txhua txhua txhua txhua txhua txhua txhua txhua yam kev hloov kho. Hauv qab no yog ib kauj ruam - {{4 4} {}}}}}}}}} Xaiv, roj teeb, thiab cov tshev kawg.
1. Lub Hwj Chim Source: Xaiv txoj cai tam sim no thiab polarity
Stainless Hlau Tig Vuam cia ntawm DC Ncaj Polarity (DCSP), qhov twg lub tungsten electrode thiab workpiece yog qhov zoo. Cov teeb tsa no tshwj xeeb tshaj plaws rau hauv lub hauv paus hlau (tsis yog electrode), kom tsis txhob muaj tungsten muaj kev zam rau hauv weld (uas tsis muaj zog corrosion resistance). Ac tam sim no, siv rau txhuas, tsis tseem ceeb ntawm no thiab yuav ua rau arc tsis khov, yog li teeb tsa koj lub welder rau DC hom.
Feem ntau cov niaj hnub hloov tshuaj welders muaj cov kev tswj hwm zoo dua, uas yog qhov tseem ceeb rau cov hlau tsis muaj hlau. Xaiv rau cov welder nrog tsawg kawg 200 amps ntawm cov zis los lis ib qho thicknesses (los ntawm nyias muaj 20 {gauge cov ntaub ntawv rau ½-nti daim hlau). Yog tias ua haujlwm nrog nyias nyias stainless hlau (0.06 ntiv tes lossis tsawg dua), ib tus qauv 110v yuav ua rau kub ua kom sov ruaj khov rau cov khoom siv thicker.
2. Tungsten Electrode: Xaiv cov khoom siv, loj, thiab cov duab
Lub tungsten electrode kev ua arc thiab yuav tsum witand kom kub siab yam tsis tau tawg. Rau stainless hlau:
Cov khoom siv: xaiv 2% labthhanated tungsten (xiav hau) rau nws versatility. Nws muab cov arc ruaj khov, tiv taus kev sib kis, thiab ua haujlwm zoo nrog DCSP thoob plaws 50-400 amps. Zam kev ntshiab tungsten (ntsuab hau), raws li nws tawm tsam kom tswj tau lub arc ruaj khov ntawm siab dua amperages. Thia tungsten (red taub) kuj yog ib qho kev xaiv tab sis yog incalactive, uas xav tau kev ua kom ruaj khov tuav tuav.
Qhov loj me: phim cov hluav taws xob uas hla mus rau cov khoom tuab thiab cov amperage ntau yam:
1/3-nti (1.6mm): Rau nyias hlau hlau nplaum (0.06-0.125 nti) thiab 50-150 amps.
3/33 nti (2.4mm): rau nruab nrab tuab (0.125-0.25 nti) thiab 150-250 amps.
1/8-nti (3.2mm): rau cov khoom tuab (0.25-0.5 nti) thiab 250-400 amps.
Sib tsoo: duab lub tungsten rau 30-60℃taw qhia siv lub siab tungsten grinder (tsis txhob tog plaub hau sib tsoo (kom zam dhau kev paug, kom zam dhau kev paug, kom tsis txhob muaj paug). Tus ntse ntse ua kom lub tsom iav ua kom pom tseeb, tseem ceeb rau precision ntawm nyias stainless hlau. Rau cov khoom siv thicker, ib qho ntxig me ntsis (1-2 zaug ntawm lub taub hau hluav taws xob) tuaj yeem txhim kho Arc ruaj khov.
3. Tiv thaiv cov roj: tiv thaiv tus pas weld
Stainless hlau yog qhov ua rau muaj paug los ntawm oxygen, thiab hydrogen hauv huab cua, oxide inclusions, lossis discoloration (ib qho cim ntawm tsis muaj zog corrosion). Txoj cai tiv thaiv roj teeb yog tsis - sib ceg:
Hom Gas: Siv Tus Ntshiab Argon (99.99% Purity). Nws muab cov arc zoo heev, ua cov ntaub thaiv nruj ib ncig ntawm lub pas dej weld, thiab tiv thaiv tungsten spitting. Rau tuab stainless hlau (tshaj li 0.25 nti) lossis siab}} kev sib xyaw ntawm 98%}} Ampority, tab sis ntshiab argon muaj kev nyab xeeb rau feem ntau cov ntawv thov.
Txaus tus nqi: Teem cov pa ntws mus rau 15-25 cubic feet ib teev (cfh). Siv 15-20 CFH rau cov khoom siv nyias lossis sab hauv tsev, cua ntsawj ntsha - chaw dawb; 20-25 CFH rau cov khoom tuab tuab, ua haujlwm sab nraum zoov, lossis thaj chaw nrog kiv cua (ua kom muaj roj ntxiv).
Cov roj Lens: Txhim kho cov roj roj collet lub cev hloov ntawm cov qauv collet. Nws tsim cov pa roj ntsej muag, muaj ntau cov pa roj tawg thiab ua kom muaj kev kub ntxhov thiab ua kom muaj kev kub ntxhov rau kev zam lub porosity hauv cov hlau tsis muaj zog.
4. Kev tswj hwm thiab kev tswj tshav kub: Zam kev kub ntxhov
Stainless hlau (tshwj xeeb tshaj yog Austenit cov qib nyiam 304) yog nquag ua rau grain kev loj hlob thiab rhiab (chromium carbide tsim) thaum overheated. Teeb Amperage Raws Li Cov Khoom Thickness, Pib Nrog Cov Lus Qhia no:
0.06-0.125 Nti: 80-150 amps.
0.125-0.25 nti: 150-220 amps.
0.25-0.5 nti: 220-350 amps.
Siv ko taw ko taw los yog ntiv tes tswj kom kho amperage dynamically:
Crank nce tshav kub kom tawm tsam lub arc thiab tsim lub pas dej weld.
Txo kev txo txiaj ntsig thaum ntxiv cov tub lim hlau kom tsis txhob hlawv los ntawm cov ntu nyias.
Taper tawm ntawm qhov kawg ntawm weld los sau cov kev ua qab yias (tiv thaiv porosity).
Zam "caij lub pedal" ntawm qhov siab tshaj plaws am5- sib xws, muaj cov cua sov nruab nrab tsim tawm huv si tov tshuaj ntxuav,}} {reawant welds.
5. Ua tub lim hlau: phim lub stainless hlau qib
Xaiv ib tus pas nrig (Tig pas nrig) uas tsom iav ntawm lub hauv paus hlau lub alloy muaj pes tsawg leeg los tsom corrosion:
Rau 304 stainless hlau: Siv ER308L (cov pa roj av tsis tuaj yeem tiv thaiv cov rhiab).
Rau 316 stainless hlau: Siv ER316L (muaj molybdenum rau cov ntsev tsis kam).
Txog kev sib koom ua ke tsis sib xws (piv txwv li, 304 rau 316): Siv ER309L (siab dua Chromium / Nickel tiv thaiv kev qaug zog).
Xaiv lub pas dej hla raws li cov ntaub tuab:
1/16-nti qws rau 0.06-0.125-nti stainless hlau.
3/33-nti qws rau 0.125-0.25-nti cov khoom.
Cov khw ntim cov thawv ntim rau hauv cov thawv ntim khoom ntim kom tiv thaiv noo noo lossis roj} tej zaum me me me txawm tias yuav muaj kev tsis txaus ntseeg.
6. Kev teeb tsa zaum kawg
Ua ntej vuam, xyuas cov ntsiab lus tseem ceeb no:
Ua haujlwm kev nyiam huv: Tshem cov roj, roj, xeb, lossis oxides los ntawm cov hlau stainless hlau txhuam (tsis txhob siv ntawm cov hlau me me) thiab acetone. Kev tsis huv yog qhov ua rau pom kev ua yeeb yam hauv cov hlau stainless hlau.
Kev sib txuas av hauv av: Ruaj ntseg hauv av clamp rau lub workpiece (tsis yog xim - coated lossis rusty nto) kom ntseeg tau tam sim no ntws tam sim no. Ib qho av xoob xoob ua rau arc fliling thiab tsis sib thooj.
Post - ndour roj: teeb pos - ntws mus rau 5-10 vib nas this. Qhov no ua rau weld tiv thaiv raws li nws txias, tiv thaiv oxidation ntawm cov kub hlau (uas hloov lub weld xiav thiab tsis muaj zog corrosion thiab tsis muaj zog corrosion tsis kam).
Kev daws teeb meem nquag
Porosity (me ntsis qhov nyob rau hauv weld): Kos rau cov kab mob hauv cov hlau, cov roj txaus, lossis cov roj xoob xoob. Nce roj ntws los yog re ...-}} ntxuav cov workpiece.
Weld discoloration (xiav / liab tint): overheating lossis tsis txaus tshaj tawm {{ke} ntws roj. Txo kom txo qis thiab txuas ntxiv post - ndour sij hawm.
Tungsten kev sib kis (txho / dub taub): ARC dhau ntev, lossis tungsten tau chwv lub pas weld pas dej. Grind lub taub kom huv thiab txo cov arc ntev.
Los ntawm kev ua raws li cov kauj ruam no, koj yuav teeb tsa ib tug tig welder los tsim muaj zog, corrosion {{}} istant stainless hlau welds. Tus yuam sij yog ntsuas cov tswv yim tshav sov, npog cov roj teeb, thiab muab tub lim cov khoom siv hlau kom khaws cov khoom siv tsis tseem ceeb hauv cov ntawv thov suav tsis tau.
