Dab tsi yog alloy 904L?
Alloy 904L yog qhov sib txuam ntau dua ntawm cov kav hlau tsis muaj txiaj ntsig nrog 20% chromium thiab 25% npib tsib xee. Lub alloy tau tsim tshwj xeeb rau dilute sulfuric acid thov.
Austenitic Stainless hlau
Anustenitic Stainless hlau yog dav siv vim lawv muaj, tus nqi qis, tsim nyog corrosion tsis kam, thiab kev cuam tshuam zoo heev. Ua kom muaj cov ntsiab lus chromium thiab molybdenum yuav tseem txhim kho nws qhov pitting yeem.
Alloy 904L (tsis yog N08904, 1.4539) kuj muaj qhov loj dua, uas tooj liab ntxiv rau cov kua qaub muaj zog xws li sulfuric thiab phosphoric acids. Raws li qhov tshwm sim, nws tau siv dav hauv ntau cov txheej txheem kev lag luam tshuaj, suav nrog phaj thiab bar.
Cov ntsiab lus txog tsib xee tsawg dua txhais tau hais tias nws yog qhov kim dua li cov hlau tsis zoo. Raws li qhov tshwm sim, nws tau hloov los ntawm cov nqi ntau dua-zoo super duplex stainless hlau stainless (sdss). Super Duplex Stainless hlau muaj cov txiaj ntsig ib lub zog 2-3 lub sij hawm uas nws tuaj yeem ua tiav tib yam kev ua haujlwm hauv thicker thickness.
Super Duplex Stainless hlau muaj lub zog tensile (pren) ntawm ntau dua 40, thaum Alloy 904L muaj tus pren ntawm 43, uas yog kwv yees sib npaug. Txawm li cas los xij, Ferralium 255 (unren tsis yog s32550, F61, 1.4507) kuj muab nws zoo tshaj plaws corrosion tsis kam nyob rau hauv ntau ntau ntawm cov acids. Hauv kev sib piv, lub zog siab dua ntawm Ferralium 255 kuj tseem ua rau nws muaj ntau cov hnav-resistant, ua rau nws zoo tagnrho rau kev siv sib xyaw ua ke thiab sib xyaw.
Qhov Zoo Ntawm Kev Siv 904L Alloy
Qhov laj thawj tseem ceeb rau kev txuas ntxiv rau kev siv 904L tsis siv super duplex stainless hlau yog tseem siv thaum lub sijhawm ua haujlwm tau zoo nyob hauv qab SSS. Txij li 904L alloy yog Austenic, nws tswj hwm nws cov kev cuam tshuam nyuaj ntawm cryogenic kub ({}} degrees Celsius).
Ib qho ntxim nyiam ntawm 904L alloy yog tias nws yog siv hauv kev tsim cov rolex saib. Rau hom kev thov no, cov hlau xaiv yuav tsum yog qhov sib nqus. Yog li ntawd, duplex thiab super duplex stainless hlau tsis haum.
Gnee Steel muaj ntau lub duplex, super duplex, usteneric stainless hlau thiab nickel alloys hauv 1 "(406.2mm) thiab phaj tuab txog li 3".
