Thaum nws los txog Weldability {{0} Ntsuas los ntawm kev ua tiav muaj zog, thiab corrosion {{-304 Stainless Hlauyog pom tau dav raws li qhov kev sib tw weldable stainless. Nws tshwj xeeb ua ke ntawm cov tshuaj muaj pes tsawg leeg, micral tus cwj pwm, thiab kev zam txim ntawm cov neeg ua haujlwm yuam kev, thiab txhim khu kev qha hauv ntau daim ntawv thov. Hauv qab no yog cov ncauj lus kom ntxaws ntxaws txog vim li cas 304 sawv tawm, nrog rau kev sib piv rau lwm qib thiab cov lus qhia tseem ceeb.
Vim li cas 304 stainless hlau ua hauv weldability
304 yog Austenitic stainless hlau, ib feem ntawm 300-} series tsev neeg tau txhais los ntawm nws lub ntsej muag-nruab nrab lo lo lo lus teb (FCC) cov qauv siv lead ua. Tus qauv no, ua khub nrog nws cov alloy sib npaug, tshem tawm ntau tus vuam cov nyom uas mob hlau tsis muaj lwm tus.
1. Balanced Chemistry minimizes vuam kev phom sij
304 txoj kev muaj pes tsawg leeg yog tsim kom tsis txhob muaj kev cuam tshuam vuam tsis xws luag:
Chromium (18-20%): Muab cov txheej oxide passive uas tiv thaiv corrosion tab sis yog sib npaug los tiv thaiv "kub tawg"} Kev tawg pleb
Npib tsib xee (8-10.5%): Txav kom ruaj khov rau Austenitic microstructure, uas tseem du ntau txawm tias thaum kub siab. Qhov kev sib cais no tso cai rau WELD los nthuav dav thiab cog lus thaum muaj cua sov thiab martensitic stainless hlau, uas ua rau nkig hauv qab kev ntxhov siab.
Cov pa roj carbon (tsawg dua los yog sib npaug rau 0.08%): Txo qhov kev pheej hmoo ntawm "rhiab heev," tus txheej txheem uas yuav ua ke nrog chromium ua ke nrog cov kab sib xyaw ua ke thaum vuam, depreting chromium thiab tsis muaj zog corrosion thiab tsis muaj zog corrosion tsis kam. Rau cov ntawv tseem ceeb, 304l variant (carbon tsawg dua los yog sib npaug rau 0.03%) tshem tawm qhov kev pheej hmoo no.
2. Tau tshaj txhua tus vuam loj
304 Ua haujlwm sib khi nrog txhua txoj kev v hlau vuam, ib qho versatility unmate los ntawm lwm qib:
Gtaw (Tig): Tsim tau meej, huv welds siv er308l filleer hlau. Pasustitic weld pas dej ntws tau zoo, xav tau cov ntu tuab rau cov kab tuab (txog li 1 nti).
GMAW (MIG): Siv er308L lossis er308lsi hlau rau cov arcs ruaj khov thiab tsawg heev, piv txwv li, 98%}%?
Smig (pas): E308L-16 elecrounds xa cov txiaj ntsig txhim khu
Pom (submerged arc): Ua haujlwm nrog 308l flux - cored hlau rau high deposition vuam ntawm loj 304 cov qauv (piv txwv li, tso tsheb hlau luam).
Tsis muaj lwm yam stainless hlau phim tus ntoo khaub lig - cov txheej txheem compatibility.
3. Zam txim ntawm cov neeg teb xov tooj yuam kev thiab cov xwm txheej tsis zoo
304's Weldility ci ntsa iab hauv tiag- Ntiaj teb cov xwm txheej, qhov chaw uas zoo kawg nkaus yog tsawg:
Tiv thaiv kev sib kis me: Tsis zoo li 316 (uas rhiab rau roj lossis av), 304 welds tseem muaj lub teeb xeb lossis cov xuab zeb, tau ua tiav yooj yim.
Adapts rau tshav ntuj hloov kho: Overheating (ib txwm muaj nyob rau hauv phau ntawv vuam) tsis tshua muaj ua rau kev tawg, ua tsaug rau nws qhov kev sib tw. Qhov kev sib piv nrog 430 (Ferritic) lossis 410 (Martensitic) cov hlau, uas tawg ua raws li cov xwm txheej zoo sib xws.
Ua kom tiav yooj yim: Tus nqi ua si weld reld fluidity txuas hniav me me pob txha, txo qhov kev xav tau rau meej meej {} {1}- boon rau cov pib tshiab lossis teb chaws.
Yuav ua li cas 304 piv rau lwm cov hlau tsis muaj
Lub sij hawm lwm qib tau siv tshwj xeeb siv, lawv poob luv luv hauv Weldability:
| Teem nqi | Weldability vs . 304 | Qhov tseem ceeb vuam cov txwv |
|---|---|---|
| 316 (Molybdenum) | Tsawg weldable | Nquag mus rau kub tawg yog tias cov lus qhia tshav kub ntau dhau; Yuav tsum yuav tsum tau tiv thaiv kev tiv thaiv kab mob kom tsis txhob muaj qhov porosity. |
| 430 (Ferritic) | Ntau tsawg weldable | Xav tau preheating (300-500℃f) kom tiv thaiv kev tawg pleb; Welds muaj nkig tsis muaj kab lus - Weld annealing. |
| 410 (Martensitic) | Ntau tsawg weldable | Hardens sai thaum txias; Yuav tsum tau preheating (500-800 Degree F) thiab tshaj tawm- Weld Templ tempering kom tsis txhob tawg. |
| 309 (High Cr / Ni) | Tsawg weldable | Ua lub pas dej kub kub, khiav ceev weld pas dej uas nyuaj rau kev tswj hwm; overheats yooj yim hauv tuab seem. |
| 310 (siab - kub) | Tsawg weldable | Ntxim rau kub tawg; Xav tau precise tshav kub tawm thiab sib koom ua ke tsim. |
Cov lus qhia rau vuam 304 stainless hlau
Txhawm rau dag 304's weldability:
Siv cov chaw muab tub lim: ER308L (Tig / Mig) lossis E308L-16 (pas) kom ntseeg tau Weld ntais ntawv 304 tus mob corrosion thiab ductility.
Shield zoo: Siv Argon -} based shielding roj (o} {5 5} "
Huv si maj mam: Tshem cov xeb hnyav lossis roj nrog hlau txhuam lossis acetone, tab sis 304 pab tau me me tsis huv zoo dua li lwm cov qib.
Zam kev hla dhau: Rau cov ntu tuab, qhov chaw weld hla los tiv thaiv cov cua sov ntau dhau, uas tuaj yeem ua rau muaj zog.
Tag
304 Stainless hlau lub ntsuas pa hluav taws xob, thiab micrentenitic microstructure, thiab kev yoog raws li txhua qhov vuam ua rau nws muaj feem ntau weldable steel hlau. Nws zam txim rau kev ua yuam kev ib txwm muaj, yuav tsum tsis muaj tshwj xeeb ua ntej / tshaj tawm {{} {} {} {} {} {} {}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}} Txoj kev ua tau zoo rau kev lag luam los ntawm kev ua zaub mov ua rau architecture. Txawm tias nws cov qib ua kom zoo nyob rau hauv ib puag ncig tshwj xeeb (piv txwv li, 316 hauv Saltwater), tsis muaj ib qho phim 304 tus- ncig weldability. Rau feem ntau cov ntawv thov, 304 yog kev xaiv meej rau kev ntseeg siab, yooj yim vuam.
