[[TitleIndustry]]

Kev siv Austenitic stainless hlau siv

Date:Jun 12, 2019

Cov hlau stainless siv nyob rau hauv kev lag luam dej qab zib tshauv yog kev lag luam austenitic stainless steels thiab austenitic-ferritic duplex stainless steels. Ntawm lawv, 00Mo5 (00Cr18Ni18Mo5) stainless hlau, high nickel molybdenum 904L (00Cr20Ni25Mo4) stainless hlau thiab 316L (00Cr18Ni12Mo2) stainless hlau muaj molybdenum hauv austenitic stainless hlau yog qhov siv ntau tshaj plaws. Duplex stainless hlau mas muaj austenite-ferrite duplex stainless hlau 3RE60 (00Cr18Ni8Mo3Si2) thiab CD4Mcu nrum hlau stainless cov ntaub ntawv ob.

00Mo5 stainless hlau tsuas yog siv los ua lub raj cua txias ntawm carbonization ntauwd hauv dej qab zib tshauv. Nws tau zoo kawg nkaus pitting corrosion tsis kam thiab ua kom cov nyom tiv thaiv tsis kam, thiab txawm siv tau rau qhov txias txias cov kav dej hu rau dej hiav txwv nruab nrab. Txawm li cas los xij, cov khoom siv no tsis yog txheem hlau stainless series. Nws yog qhov nyuaj los yuav khoom hauv khw, thiab nws qhov kev siv tau raug txwv rau qee yam, thiab nws tsis tau txais kev txhawb nqa dav.

Austenitic stainless steel uses

904L tsis tsuas yog muaj cov ntsiab lus siab chromium-npib tsib xee, tab sis kuj muaj Mo cov ntsiab lus siab, thiab muaj cov xeb zoo dua li 00Mo5 stainless hlau. Hauv cov dej qab zib cov hmoov tshauv ntau lawm, 904L cov khoom pov thawj zoo dua qub rau kev xeb hluav taws xob thiab pitting tsis kam. Ntxiv rau, 904 L muaj qhov kub zoo thiab ua haujlwm txias. Hauv Tebchaws Europe, 904L raug suav hais tias muaj kev xeb zoo heev piv rau cov titanium hauv cov khoom siv ntoo tshauv. Nws siv nyob rau hauv ntau lub teb chaws titanium-depleted los hloov cov titanium hauv cov ntawv thov kua txob tshauv. Nws tuaj yeem siv tsis tau tsuas yog cov khoom siv plhaub rau lub nkoj siab, tab sis kuj yog siv rau lub ntsej muag thiab nrum rau lub tubesheet thiab twj tso kua mis ntawm cov khoom siv cua sov.

Ntxiv rau, 316L, 304 thiab lwm cov hlau tsis muaj hlau kuj tseem siv tau hauv cov khoom siv kua dej tshauv, cov kav xa dej, cov twj paj nruag thiab cov li qub.

Kev tsim cov caustic sis dej qab zib ntau cov nyhuv evaporation uas yog ze rau kev tsim cov dej qab ntsev, lub twj tso kua mis valve ua los ntawm 0Cr18Ni9Ti stainless hlau nrog cov siab ntawm NaOH cov ntsiab lus ntawm 45%, NaCl cov ntsiab lus ntawm 20% thiab ntsuas kub ntawm 150 ° C (rhaub) tsawg dua 1 Nyob rau hauv lub hli, cov yeeb nkab ua los ntawm 1Cr18Ni9Ti muaj lub neej kev pab cuam ntawm tsuas yog 11 lub hlis. Cov khoom siv hluav taws xob tsis tshua muaj hlau tsis tshua muaj hlau (000Cr26Mo1) ntawm cov evaporator ntawm cov kab mob alkali (42% -46%) cov kab ntau lawm muaj cov kab xeb tiv thaiv ntawm tsuas yog 0.018 hli / a thiab kev pab cuam lub neej ntau dua 10 xyoo.


Tug: Cov txheej txheem steel yuav tsim kho li cas yav tom ntej?

Tom ntej: Keeb kwm ntawm stainless hlau