Thaum xaiv cov qib stainless hlau (SS) rau koj daim ntawv thov lossis cov qauv, nws yog ib qho tseem ceeb uas yuav tau txiav txim siab seb puas yuav tsum muaj cov khoom sib nqus. Txhawm rau txiav txim siab paub, nws yog ib qho tseem ceeb kom nkag siab cov yam ntxwv uas txiav txim siab seb qib stainless hlau puas yog hlau nplaum los yog tsis.
Stainless hlau yog hlau-raws li alloys renowned rau lawv zoo heev corrosion kuj. Muaj ntau hom stainless hlau, nrog rau cov thawj pawg yog austenitic (piv txwv li, 304H20RW, 304F10250X010SL) thiab ferritic (feem ntau siv hauv kev siv tsheb, khoom siv hauv tsev, thiab khoom siv hauv tsev). Cov pawg no muaj cov tshuaj lom neeg sib txawv, ua rau lawv cov kev coj ua sib nqus sib txawv. Ferritic stainless hlau zoo li hlau nplaum, hos austenitic stainless hlau tsis yog. Cov hlau nplaum ntawm ferritic stainless hlau tshwm sim los ntawm ob yam tseem ceeb: nws cov ntsiab lus hlau siab thiab nws cov qauv hauv qab.
Hloov los ntawm Non-Magnetic rau Sib Nqus Phase hauv Stainless Hlau
Ob leeg304thiab 316 stainless hlau poob rau hauv qeb austenitic, uas txhais tau hais tias thaum lawv txias, hlau khaws nws cov austenite (gamma hlau) daim ntawv, ib theem tsis sib nqus. Ntau theem ntawm cov khoom hlau sib xws rau cov qauv siv lead ua sib txawv. Hauv qee lwm cov hlau alloys, qhov kub kub ntawm cov hlau no hloov mus rau theem sib nqus thaum lub caij txias. Txawm li cas los xij, lub xub ntiag ntawm npib tsib xee hauv stainless hlau alloys tiv thaiv qhov kev hloov pauv no thaum cov hlau txias txias rau chav sov. Raws li qhov tshwm sim, cov hlau tsis muaj steel muaj qhov sib nqus siab dua me ntsis dua li cov ntaub ntawv tsis sib nqus, txawm hais tias nws tseem nyob hauv qab qhov uas feem ntau suav tias yog hlau nplaum.
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias koj yuav tsum tsis txhob cia siab tias yuav ntsuas qhov qis sib nqus ntawm txhua daim ntawm 304 lossis 316 stainless hlau koj tuaj hla. Txhua tus txheej txheem muaj peev xwm hloov kho cov qauv siv lead ua ntawm stainless hlau tuaj yeem ua rau austenite hloov mus rau hauv ferromagnetic martensite lossis ferrite cov ntaub ntawv hlau. Cov txheej txheem zoo li 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 thiab txias. Txhawm rau ntxiv qhov nyuaj, cov khoom sib nqus ntawm cov alloys yog cuam tshuam los ntawm lawv cov muaj pes tsawg leeg. Txawm hais tias nyob rau hauv qhov kev tso cai ntawm kev hloov pauv hauv cov ntsiab lus nickel thiab chromium, pom qhov sib txawv hauv cov khoom sib nqus tuaj yeem pom tau rau ib qho tshwj xeeb alloy.
Cov tswv yim xav txog kev tshem tawm cov hlau tsis muaj hlau
Ob 304 thiab316 stainless hlaumuaj cov yam ntxwv paramagnetic. Yog li ntawd, cov khoom me me, xws li spheres nrog diameters xws li kwv yees li 0.1 mus rau 3 hli, tuaj yeem rub mus rau cov khoom sib nqus muaj zog sib nqus tau muab tso rau hauv cov khoom ntws. Nyob ntawm lawv qhov hnyav thiab, qhov tseem ceeb tshaj, lawv qhov hnyav piv rau lub zog ntawm kev sib nqus, cov khoom me me no yuav ua raws li cov hlau nplaum thaum lub sijhawm tsim khoom.
Tom qab ntawd, cov khoom no tuaj yeem raug tshem tawm tau zoo thaum lub sijhawm ua haujlwm tu cov hlau nplaum niaj hnub. Raws li peb cov kev soj ntsuam, peb tau pom tias 304 stainless hlau hais feem ntau yuav khaws cia rau hauv qhov ntws piv rau 316 stainless hlau hais. Qhov no feem ntau yog vim muaj qhov sib nqus siab dua me ntsis ntawm 304 stainless hlau, uas ua rau nws teb tau ntau dua rau cov txheej txheem sib nqus sib nqus.
Post lub sij hawm: Sep-18-2023