Yuav ua li cas ua noj stainless hlau? Vuam tshuab, khoom siv

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Yuav ua li cas ua noj stainless hlau yog cov lus nug tseem ceeb rau kev lag luam niaj hnub no. Nws yog tsim nyog sau cia tias hom hlau no yog cov khoom siv ruaj khov, yog li nws cov txheej txheem muaj qee qhov nuances. Kev xaiv ntawm txoj kev vuam yog nyob ntawm qhov tuab ntawm cov khoom ua haujlwm thiab ntawm cov tshuaj muaj pes tsawg leeg.

Stainless hlau. Cov yam ntxwv tseem ceeb

Stainless hlau yog ib qho alloy ntawm carbon thiab hlau alloyed nrog chromium. Cov ntsiab lus siab ntawm cov khoom tom kawg ua kom muaj kev tiv thaiv siab ntawm cov khoom hauv ib puag ncig corrosive. Chromium oxides tsim ib zaj duab xis tiv thaiv tshwj xeeb, ua tsaug rau lub hauv paus hlau tuav nws qhov tsis kam. Tsis tas li ntawd, hlau yog alloyed nrog npib tsib xee, cob alt, titanium. Lub ntsiab zoo ntawm cov hlau tsis muaj steel yog siab tiv thaiv nyob rau hauv kev sib cuag nrog nruj ib puag ncig, siab zog, raws li, thiab lub sij hawm ntev ntawm kev ua hauj lwm. Tsis tas li ntawd, steel muaj qhov zoo nkauj zoo nkauj.

Cov yam ntxwv ntawm vuam corrosion-resistant steel

Cov khoom siv no muaj qhov nthuav dav loj. Yog li ntawd, nyob rau hauv thermal ua, lub workpieces yuav deformed thiab hloov lawv qhov ntev. Raukom tsis txhob muaj qhov xwm txheej zoo li no, nws yog ib qho tsim nyog yuav tsum ua raws li kev pom zoo ntawm qhov sib txawv ntawm cov khoom sib txuas. Qhov kev txiav txim ntawm qhov kub thiab txias tuaj yeem ua rau lub fact tias cov hlau alloy poob nws cov khoom me ntsis, qhov corrosion kuj txo. Hauv qhov no, lub vuam yuav tsum tau txias rau lub sijhawm. Cov thermal conductivity tsawg ntawm cov hlau yuav tsum tau txo lub zog tam sim no los ntawm 25%. Nws tseem tsim nyog xaiv txoj cai vuam electrodes, txij li nrog ntev ntev lawv tuaj yeem overheat. Lwm qhov nyuaj yog qhov pom ntawm refractory carbides ntawm qhov chaw, intergranular corrosion.

Txoj kev ua noj stainless hlau

Muaj ntau txoj hauv kev rau vuam stainless hlau. Nrog me me hlau thickness (1.5 hli), nws yog advisable siv arc vuam (nyob rau hauv ib tug inert gas ib puag ncig). Yuav ua li cas ua noj stainless hlau nrog ib tug tuab ntawm tsawg tshaj li 0.8 hli? Nyob rau hauv rooj plaub no, ib txoj kev pulsed arc yog siv. Cov hlau nyias kuj txuas nrog ib qho arc nrog cov khoom siv dav hlau hloov mus. Ntau ntxiv, txoj kev plasma welding yog siv. Nws tuaj yeem siv rau ntau yam ntawm workpiece thicknesses. Cov ntu loj dua 10 mm yog welded nyob rau hauv lub pob flux. Lawv kuj siv cov vuam ntau zaus, txoj kev laser.

Argon cov khoom siv vuam

txheej txheem no tshwm sim hauv ib puag ncig tiv thaiv roj - argon. Nws tiv thaiv cov khoom los ntawm cov teebmeem ntawm oxygen. Nyob rau hauv ib tug tshwj xeeb ntaus ntawv, ib tug arc yog tsim ntawm ib feem thiab tungsten electrode. Thaum lub sij hawm cua sov txheej txheem, cov npoo yaj, tsim kom muaj kev tiv thaiv weld pas dej ua ke. Ib lub xov hlau tshwj xeeb tseem niaj hnub pub rau hauv arc raustainless hlau welding. Txoj kev sib txuas nws tus kheej yog nqa tawm ntawm lub kaum sab xis ntawm 90 °. Rau kev ua haujlwm zoo tshaj plaws, nws tsim nyog tshem tawm cov oscillatory txav ntawm cov electrode. Qhov tshwm sim yog lub seam tsis muaj slag. Xws li kev sib txuas yog qhov zoo, durability, txaus siab rau txhua qhov kev xav zoo nkauj. Gas vuam ntawm stainless hlau yog siv nyob rau hauv ntau industries: tshuaj, khoom noj khoom haus kev lag luam, automotive, aviation, thermal zog engineering. Ntawm qhov tsis txaus, ib tus tuaj yeem tawm tsuas yog lub sijhawm loj siv rau ntawm tus txheej txheem nws tus kheej. Tsis tas li, thev naus laus zis xav tau kev txawj tshwj xeeb thiab kev paub dhau los ntawm cov neeg ua haujlwm.

TIG welding equipment

Ua ntej ntawm tag nrho, hom kev sib txuas hlau no yuav tsum muaj lub inverter. Muaj ob peb qhov kev hloov kho thiab cov qauv: "Svarog", KEMPPI Master, BRIMA, thiab lwm yam. Qhov zoo ntawm cov cuab yeej yog qhov yooj yim ntawm kev ua haujlwm, me me thiab qhov hnyav, ruaj khov arc. Inverters tuaj yeem siv rau vuam yuav luag txhua yam hlau, thaum kev sib txuas yuav ua tau zoo. Yuav ua li cas ua noj stainless hlau nrog inverter thiab dab tsi yuav tsum xav txog? Ua ntej ntawm tag nrho cov, nws yog ib qhov tsim nyog los xaiv qhov tseeb kev khiav hauj lwm kub ntau yam. Qee cov qauv tsis ua haujlwm sab nraum zoov thaum huab cua txias. Nws tseem tsim nyog xav txog lub zog ntawm lub cuab yeej. Rau kev siv hauv tsev, lub inverter nrog qhov tam sim no txog li 160 A yog qhov tsim nyog (piv txwv li, "Svarog TIG 200 P", PRO TIG 200 P) Cov khoom raug ntxuav thiab degreased ua ntej kev sib txuas. Rau vuam, koj tseem yuav xav tau lub tog raj kheej roj nrog argon. Txawm hais tias nyob rau hauv kev xyaum siv cov roj diluted tau tso cai. Ib tug burner yog txuas mus rau lub gas hose, nyob rau hauv lub tuav ntawm ib tug tungsten electrode yog muab tso rau. Nyob rau ntawm tus kov ntawm lub burner muaj cov nyees khawm rau muab tam sim no thiab roj. Lub vuam hlau ntawm tib yam khoom raws li cov khoom yuav tsum tau koom nrog.

Yuav ua li cas semiautomatic vuam ua haujlwm

Yuav ua li cas ua noj stainless hlau thaum kho tsheb, hauv tsev? Nyob rau hauv cov ntaub ntawv no, feem ntau siv semi-automatic vuam txoj kev. Nws tuaj yeem tshwm sim ob qho tib si hauv ib puag ncig tiv thaiv thiab tsis siv roj. Cov khoom siv semiautomatic kuj tseem siv nyob rau hauv cov tuam txhab tsheb loj, uas qhia tau hais tias qhov zoo ntawm cov welded sib koom ua ke. Nyob rau hauv cov ntaub ntawv no, ib tug tshwj xeeb hlau ua raws li ib tug electrode thiab muab tub lim khoom. Muaj ntau txoj hauv kev los ua haujlwm nrog cov khoom siv: luv luv arc, tshuaj tsuag hloov mus, stainless hlau mem tes vuam. Cov thev naus laus zis muab rau kev ua haujlwm yam tsis muaj kev tiv thaiv roj, txawm li cas los xij, hauv qhov no, cov hmoov electrodes tshwj xeeb yuav tsum raug xaiv. Txoj kev no kuj tsim nyog rau kev ua haujlwm sab nraum zoov. Tsis tas yuav yuav (thiab, raws li, siv nyiaj ntxiv) lub tog raj kheej roj. Qhov no muaj nws qhov tsis zoo - dhau sijhawm, qhov sib koom ua ke tuaj yeem ua xeb. Yog li ntawd, cov kws tshaj lij tseem pom zoo kom siv tshwj xeeb stainless hlau electrodes thiab vuam siv argon. Txog rau tam sim no, muaj ntau ntau yam khoom siv semiautomatic, ob qho tib si hauv tsev ("FEB", "Svarog"), thiab txawv teb chaws ntau lawm (BRIMA, EWM, TRITON, thiab lwm yam). Kev xaiv cov cuab yeej yog nyob ntawm cov dej num, ntim ntawm vuam thiabyam ntxwv ntawm cov ntaub ntawv yuav tsum tau koom.

Siv electrode welding

Yuav ua li cas ua noj stainless hlau yog tias tsis muaj kev tshwj xeeb rau qhov zoo ntawm cov seam? Raws li txoj cai, nyob rau hauv domestic tej yam kev mob, thaum txuas tag nrho cov hom ntawm cov kav dej, nyob rau hauv me me-teev ntau lawm, thiab kuj yuav tau txais ib tug luv luv seam, electrode welding yog siv. Lub ntsiab ntawm cov txheej txheem no yog tsim los ntawm cov khoom siv ntawm lub workpiece thiab cov hlau ntawm electrode.

Qhov zoo ntawm cov txheej txheem suav nrog kev ua kom yooj yim, muaj peev xwm sib txuas cov hlau sib txawv (ob qho tib si nyias thiab cov ntu loj). Tsis tas yuav siv roj, uas txo cov nqi ntawm cov txheej txheem. Tsis tas li ntawd, vuam nrog electrodes ua rau nws muaj peev xwm mus cuag qhov nyuaj-rau-mus txog qhov chaw. Muaj qee qhov tsis zoo ntawm cov tshuab no. Ua ntej, lub weld yuav tsum tau ntxuav los ntawm lub resulting slag. Qhov thib ob, qhov vuam ceev me me.

Yuav ua li cas xaiv electrodes rau vuam

Stainless hlau electrodes yog dav siv los koom nrog corrosion-resistant alloys uas ua haujlwm ntawm qhov kub thiab txias. Raws li txoj cai, cov pas nrig yog tsim los ntawm nickel, chromium. Ob hom electrodes tuaj yeem siv rau hauv phau ntawv arc vuam. Thawj - ua hauj lwm nyob rau hauv tej yam kev mob ntawm ncaj qha tam sim no. Lub ntsiab txheej feem ntau muaj magnesium, calcium carbonates. Vuam electrodes nrog rutile txheej tuaj yeem ua haujlwm nrog alternating tam sim no. Thaum vuam siv argon, ntau yam tungsten rods yog siv. Ua tsaug rau kev ua haujlwm siabkub, lawv tsis yaj. Muaj ntau ntau yam ntawm lawv. Ntsuab electrodes (WP) muaj cov ntshiab tungsten. Lawv muab ib tug txaus siab tsis kam ntawm lub arc. Dawb - WZ-8 - doped nrog zirconium oxide. Thorium oxide ntxiv rau cov electrodes liab. Qhov no yog cov pab pawg neeg tshaj plaws, cov pas nrig muaj kev tiv thaiv siab. Tsis tas li ntawd, lanthanum, cerium tuaj yeem suav nrog tungsten electrodes.

Weld sib koom ua haujlwm

Tom qab cov txheej txheem ntawm kev sib koom ua ke, nws yog qhov tsim nyog los ntxuav cov seam. Qhov no yuav tsum tau ua nyob rau hauv thiaj li yuav txhim kho cov tsos, ncua lub neej kev pab cuam. Txwv tsis pub, corrosion tej zaum yuav tshwm sim hauv cheeb tsam no. Ua ntej ntawm tag nrho cov, mechanical cleaning ntawm weld yog nqa tawm. Qhov kev sib tshuam zoo li zoo nkauj dua tom qab sandblasting. Cov kauj ruam tom ntej yog xuab zeb rau saum npoo. Hauv qhov no, nws tsis pom zoo kom siv cov abrasives raws li corundum, vim nws tuaj yeem ua rau cov tsos ntawm corrosion. Nws yog ib nqi sau cia hais tias tag nrho cov manipulations yog aimed ntawm kev txhim kho cov tsos ntawm ib feem. Etching thiab passivation yuav pab tiv thaiv weld los ntawm kev puas tsuaj. Etching yog ib qho kev kho saum npoo nrog cov tshuaj tshwj xeeb uas rhuav tshem cov txiaj ntsig. Thaum lub sij hawm passivation, ib yam khoom tshwj xeeb yog siv rau kev sib tshuam. Raws li nws cov kev cuam tshuam, ib zaj duab xis tiv thaiv tshwm (los ntawm chromium oxide).

Laser alloy vuam txoj kev

Ib qho niaj hnub thiab thev naus laus zis sib koom ua ke yog laser vuam ntawm stainless hlau.

Qhov tseem ceeb ntawm txoj kev no yog siv lub laser beam ua qhov cua sov. Xws li vuam yog txawv los ntawm kev kub ceev, siab concentration ntawm lub zog ntawm kev sib tshuam. Cov nyhuv thermal ntawm thaj tsam, uas nyob ze rau ntawm lub seam, yog qhov tsis tseem ceeb. Yog li ntawd, qhov kev pheej hmoo ntawm kub los yog txias tawg yog tsawg heev. Lub resulting seam yog txawv los ntawm nws lub zog, tsis muaj porosity. Nws kuj tseem tuaj yeem xa cov roj thaiv kev tiv thaiv rau kev sib tshuam ntawm cov ntsiab lus alloying. Txij li thaum tsis muaj vuam electrodes, txawv teb chaws tebchaw tsis tau mus rau hauv lub seam. Laser vuam txawm siv tau rau cov hniav nyiaj hniav kub, raws li tag nrho cov seams yog nyias, huv si thiab muaj zog. Qhov tsuas yog qhov tsis zoo yog tias cov khoom siv kim heev, yog li kev siv ntau ntawm cov kev teeb tsa no tseem tsis tau ua.