Thaum xaiv cov hlau tsis xeb (SS) rau koj daim ntawv thov lossis qauv, nws yog ib qho tseem ceeb uas yuav tsum xav txog seb puas xav tau cov khoom sib nqus. Yuav kom txiav txim siab tau zoo, nws yog ib qho tseem ceeb kom nkag siab txog cov yam ntxwv uas txiav txim siab seb cov hlau tsis xeb puas yog sib nqus lossis tsis yog.
Cov hlau tsis xeb yog cov hlau ua los ntawm hlau uas paub zoo txog lawv txoj kev tiv taus xeb zoo heev. Muaj ntau hom hlau tsis xeb, nrog rau cov pawg tseem ceeb yog austenitic (piv txwv li, 304H20RW, 304F10250X010SL) thiab ferritic (feem ntau siv rau hauv kev siv tsheb, khoom siv hauv chav ua noj, thiab cov khoom siv hauv kev lag luam). Cov pawg no muaj cov tshuaj sib xyaw ua ke sib txawv, ua rau lawv cov cwj pwm sib nqus sib txawv. Ferritic stainless hlau feem ntau yog sib nqus, thaum austenitic stainless hlau tsis yog. Lub zog sib nqus ntawm ferritic stainless hlau tshwm sim los ntawm ob qho tseem ceeb: nws cov hlau ntau thiab nws cov qauv hauv qab.
Kev Hloov Pauv Los Ntawm Cov Theem Tsis Muaj Hlau Sib Nqus Mus Rau Cov Theem Sib Nqus Hauv Cov Hlau Stainless
Ob leeg304thiab 316 stainless hlau poob rau hauv qeb austenitic, uas txhais tau tias thaum lawv txias, hlau khaws nws daim ntawv austenite (gamma hlau) daim ntawv, ib theem tsis yog hlau nplaum. Ntau theem ntawm cov hlau khov kho sib raug rau cov qauv siv lead ua sib txawv. Hauv qee cov hlau sib xyaw, cov hlau kub siab no hloov mus ua theem sib nqus thaum txias. Txawm li cas los xij, qhov muaj nickel hauv cov hlau sib xyaw stainless hlau tiv thaiv qhov kev hloov pauv theem no thaum cov hlau sib xyaw txias rau chav tsev kub. Yog li ntawd, stainless hlau qhia txog kev cuam tshuam sib nqus siab dua me ntsis dua li cov ntaub ntawv tsis yog hlau nplaum kiag li, txawm hais tias nws tseem nyob qis dua qhov feem ntau suav tias yog hlau nplaum.
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias koj yuav tsum tsis txhob xav tias yuav ntsuas qhov tsis tshua muaj zog sib nqus ntawm txhua daim 304 lossis 316 stainless hlau uas koj ntsib. Txhua txoj kev uas muaj peev xwm hloov pauv cov qauv siv lead ua ntawm stainless hlau tuaj yeem ua rau austenite hloov mus rau hauv ferromagnetic martensite lossis ferrite cov qauv ntawm hlau. Cov txheej txheem no suav nrog kev ua haujlwm txias thiab vuam. Tsis tas li ntawd, austenite tuaj yeem hloov pauv mus rau hauv martensite ntawm qhov kub qis dua. Ntxiv rau qhov nyuaj, cov khoom sib nqus ntawm cov alloys no raug cuam tshuam los ntawm lawv cov khoom sib xyaw. Txawm tias nyob hauv qhov ntau thiab tsawg ntawm kev hloov pauv hauv nickel thiab chromium cov ntsiab lus, qhov sib txawv pom tseeb hauv cov khoom sib nqus tuaj yeem pom rau ib qho alloy tshwj xeeb.
Cov Kev Xav Txog Kev Siv Tau Rau Kev Tshem Tawm Cov Khoom Uas Ua Los Ntawm Cov Hlau Stainless
Ob qho tib si 304 thiab316 stainless hlauqhia txog cov yam ntxwv paramagnetic. Yog li ntawd, cov khoom me me, xws li cov pob kheej kheej uas muaj qhov loj li ntawm 0.1 txog 3 hli, tuaj yeem rub mus rau cov khoom sib cais muaj zog uas tau muab tso rau hauv cov khoom lag luam. Nyob ntawm lawv qhov hnyav thiab, qhov tseem ceeb dua, lawv qhov hnyav piv rau lub zog ntawm kev sib nqus, cov khoom me me no yuav lo rau cov hlau nplaum thaum lub sijhawm tsim khoom.
Tom qab ntawd, cov khoom me me no tuaj yeem raug tshem tawm zoo thaum lub sijhawm ntxuav cov hlau nplaum tas li. Raws li peb cov kev soj ntsuam, peb tau pom tias cov khoom me me ntawm 304 stainless hlau feem ntau yuav raug khaws cia rau hauv cov dej ntws piv rau cov khoom me me ntawm 316 stainless hlau. Qhov no feem ntau yog vim muaj qhov sib nqus siab dua ntawm 304 stainless hlau, uas ua rau nws teb tau zoo dua rau cov txheej txheem sib cais sib nqus.
Lub sijhawm tshaj tawm: Cuaj hlis-18-2023