Thaum nws los rau Tig vuam 304 stainless hlau - Qhov kev xaiv weld- Cov kev sib raug zoo weld, corrosion tsis kam, thiab kev ua haujlwm zoo. Rau Tig Vuam 304 Stainless Hlau, Er308 thiab Er308L yog qhov ntau tshaj plaws cov xaim xaim, xaiv rau lawv cov kev xav tau ntawm kev xav tau ntawm cov hlau uas xav tau.
304 Stainless hlau yog ib qho Austenitic Alloy tau hais los ntawm nws cov lus sau: 18-20% chromium, 8-10.5 tsawg dua li lossis muaj sib npaug rau 0.08%). Qhov kev siv chemistry no muab rau nws tshwj xeeb corrosion tsis kam (ua tsaug rau chromium) thiab ductility (pab neeg los ntawm Nickel). Txhawm rau tswj cov khoom no hauv Weld, lub tig tub txu xaim yuav tsum tau luam cov ntaub ntawv welloly, ua kom muaj kev sib raug zoo nrog oxidation, pitting, thiab dav corrosion.
ER308 Cov xua hlau yog tsim kom haum nrog 304 stainless hlau cov tshuaj lom. Nws muaj 19 {- 21% chromium thiab 9-11% qib tsawg dua 304, uas chromium evaporation vim yog siab arc kub). Qhov nyiaj tshuav no kom ntseeg tau lub weld hlau sib tw 304 tus corrosion tsis kam, suav nrog cov khoom siv ua khoom lag luam, thiab kev ua zaub mov rau cov khoom lag luam, thiab cov khoom lag luam dav dav yog xav tau.
Rau cov ntawv thov uas yog qhov tseem ceeb yog qhov tseem ceeb lossis qhov chaw weld tej zaum yuav kis tau kub (uas tuaj yeem exacerbate rhiab), er308l yog qhov kev xaiv zoo. Tus "l" hauv er308L txhais "cov pa roj carbon tsawg," nrog cov pa roj carbon cov ntsiab lus tsawg dua lossis sib npaug rau ER308 qhov ntau ntawm 0.08%). Qhov kev pheej hmoo ntawm cov pa roj carbon tsawg tsawg qhov kev pheej hmoo ntawm chromium nyob rau hauv tshav kub thiab tsis muaj zog nws corrosion tsis kam. ER308L yog li zoo tagnrho rau 304 stainless hlau welded Cheebtsam siv hauv cov khoom siv ua yeeb yam, dej qab zib, lossis cov av noo uas xav tau ntau tshaj plaws corrosion.
Tshaj dhau lawv cov tshuaj sib xyaw ua ke, er308 thiab ER308L muab cov txiaj ntsig zoo rau Tig Vuam 304 stainless hlau. Ob lub xov hlau muaj cov nplaim zoo tshaj plaws nyob hauv lub xeev molten, tso cai rau kev du, tsis zoo rau Tig vuam, uas ua ntej ua kom zoo nkauj thiab sab nrauv. Lawv kuj nthuav qhia cov khoom ntub zoo, kom pom kev weld hlau fuses nrog cov kev pheej hmoo ntawm qhov tsis xws luag zoo li tsis muaj fusion lossis porosity. Tsis tas li ntawd, lawv txoj kev sib tw sib tw uas ntawm 304 stainless hlau, ua kom cov weld kom tiv thaiv tib yam kev ntxhov siab, thiab thermal expansion ua cov hlau hlau yam tsis muaj kev tawg.
Thaum Er308 thiab ER308L yog cov kev xaiv cov qauv, muaj cov xwm txheej tshwj xeeb tshwj xeeb uas cov xov hlau lwm yam yuav raug txiav txim siab. Piv txwv li, er308lsi {{4 4}} qhov sib txawv ntawm cov hlwv uas muaj qhov sib txawv ntawm lub pas dej Molten yog qhov tseem ceeb). Txawm li cas los xij, er308lsi tsis yog kev hloov pauv kom thoob plaws; Nws cov ntsiab lus silicon siab dua tuaj yeem txo cov kev ua kom haum rau hauv qhov chaw ib puag ncig zoo, yog li nws yog feem ntau tshwj tseg rau tsis {tseem ceeb lossis kev ua kom zoo nkauj.
Lwm qhov kev txiav txim siab yog xaim inch, uas yog xaiv raws li cov tuab ntawm 304 stainless hlau tau welded. Rau cov ntawv nyias nyias (tsawg dua los yog sib npaug rau 1.5mm), 0.8- 1.2mm inch txoj kev tswj hwm thiab zam kev hlawv kub kub thiab zam kev hlawv kub ntxhov thiab zam kev hlawv kub ntxhov thiab zam kev hlawv kub ntxhov thiab zam rau hlawv - los ntawm. Rau cov thicker ntu (2-6mm), 1.6-2.4mm cov xov tau muab cov khoom nkag txaus kom tsis txhob muaj kev nkag mus ntau dhau, uas tuaj yeem qhia kev ua kom sov. Sib txuam xaub xaub mus rau cov khoom tuab kuj tseem ua rau muaj kev pheej hmoo weld tsis xws luag zoo li undergilling lossis overfilling.
Kev ua kom zoo ntawm kev muab cov xov hlau kom ua rau 304 stainless hlau yog qhov tseem ceeb sib luag. Cov xov hlau yuav tsum muab cia rau hauv huv, cov xwm txheej qhuav los tiv thaiv kom paug los ntawm roj, lossis noo noo {2 txawm tias cov hnoos qeev me me me me txawm hais tias muaj cov qog ua lossis suav hauv Weld. Ua ntej siv, xaim yuav tsum tau tshuaj xyuas rau xeb, teev, lossis kev puas tsuaj; Cov hlau cuam tshuam yuav tsum muab pov tseg kom tsis txhob muaj weld swb. Tsis tas li ntawd, siv cov khoom siv hlau lossis cov txheej txheem pub dawb uas tswj hwm kev ua kom ruaj khov, ua kom txaus siab rau kev ua kom zoo nkauj
Hauv cov ntsiab lus, ER308 thiab ER308L yog cov qauv kub rau Tig vuam 304 stosion rau lawv cov tshuaj sib xyaw, corrosion tsis kam, thiab kev ua tau zoo. ER308 haum feem ntau cov ntawv thov, thaum Er308L yog qhov tseem ceeb rau qhov tseem ceeb, corrosion {{}}}} hom ib puag ncig. Los ntawm xaiv cov hlau txoj cai {{8} paired nrog rau kev tso wel wel welded 304 stabless sib ntsib cov qauv siab, durability, thiab kev ua haujlwm. Raws li 304 stainless hlau txuas ntxiv mus ua ib qho kev lag luam hauv kev kho mob los ntawm kev kho mob rau cov cuab yeej siv hluav taws xob, kev ntseeg tau ntawm cov xaim hluav taws xob, cov xaim ER308L tseem ceeb rau nws Weldability thiab kev ua tau zoo.
