Super Duplex Steel Yeeb Nkab

Super duplex kav yog cov hlau siv tau zoo heev uas tau siv dav thoob plaws ntiaj teb. Nws muaj pes tsawg leeg ntawm ob chav hlau sib txawv yog lub hauv paus ntawm nws lub npe. Duplex yog qhov tseem ceeb ntawm Fe-Ni-Cr alloy thiab nta ob-theem ferritic-austenitic stainless hlau microstructure ntawm chav tsev kub.

Hauv kev sib piv rau austenitic stainless hlau, duplex steels muaj ntau dua chromium (19-28%), molybdenum (txog 5%), thiab qis nickel concentrations. Ob qhov nrov tshaj plaws duplex stainless hlau kav yog 2507 (25% chromium, 7% nickel) thiab 2205 (22% chromium, 5% nickel); 2507 kuj tseem hu ua "super duplex" vim nws qhov kev tiv thaiv corrosion zoo dua.

Super Duplex Steel Pipes Description

Lub zog: Super duplex kavyog roughly ob zaug li muaj zog raws li tus qauv austenitic los yog ferritic stainless hlau nyob rau hauv cov nqe lus ntawm lub zog.

Ductility thiab toughness:Duplex stainless hlau yog ductile thiab tawv dua li qib ferritic, thaum lawv tsis muaj zog li qib austenitic.

Corrosion Resistance:Raws li nrog rau tag nrho cov hlau stainless, corrosion kuj feem ntau yog txiav txim los ntawm cov khoom muaj pes tsawg leeg, nrog rau cov nyiaj ntawm chromium, molybdenum, thiab nitrogen yog qhov tseem ceeb tshaj plaws. Duplex stainless hlau muaj kev ua haujlwm siab heev rau kev ntxhov siab corrosion tawg thiab muaj kev tiv thaiv corrosion zoo kawg, txawm tias nyob hauv cov chaw nrog chloride thiab sulfide (SCC). Tensile nro, ib puag ncig corrosive, thiab qhov kub txaus yog qhov tsim nyog rau qhov tshwm sim ntawm SCC, ib hom kev xeb.

Resistance rau tshav kub:Piv nrog rau austenitic steels, duplex stainless hlau muaj cov thermal conductivity ntau dua thiab qis dua thermal expansion. Vim tias lawv muaj qhov kub thiab txias ntau dua li qib ferritic steel, lawv tuaj yeem siv tau tsawg kawg yog 50 degree yooj yim.

Tus nqi:Piv rau lawv cov austenitic counterparts, duplex stainless hlau muaj qis nickel thiab molybdenum concentrations. Vim tias cov ntsiab lus tsis tshua muaj alloying, duplex stainless hlau yog pheej yig dua. Vim nws lub zog ua kom zoo dua qub, duplex stainless hlau kuj tseem tso cai rau txo qhov tuab. Cov khoom uas nyias nyias tso cai rau kev txo qhov hnyav.

Weldability:Txawm hais tias tsis tau yooj yim welded raws li qib austenitic, duplex stainless steels feem ntau muaj cov weldability siab thiab tuaj yeem koom nrog siv txhua yam kev siv vuam.

Vim nws muaj ntau yam zoo, duplex stainless hlau tuaj yeem siv rau ntau yam kev siv, nrog rau kev ua, txav, thiab khaws cov tshuaj. Nws kuj yog siv rau hauv kev lag luam roj thiab roj rau cov roj thiab roj ntau lawm thiab cov kav dej thauj mus los. Offshore rigs yog siv rau kev tshawb nrhiav roj thiab roj thiab cov refinery roj thiab roj. nrog rau cov uas siv rau hauv cov chaw nyob hauv dej hiav txwv, cov cuab yeej tiv thaiv kev ua qias tuaj, cov ntaub so ntswg, thiab cov ntawv tsim khoom, cov chaw ua tshuaj lom neeg, cov khoom siv kho tshuab thiab cov qauv, cov khoom sib hloov ntawm cov cua sov, thiab cov kav dej txias.

Cim npe nrov: Super duplex steel yeeb nkab, Tuam Tshoj super duplex steel yeeb nkab lwm tus neeg