Nws yuav tsum tau hais tias tag nrho cov austenitic stainless hlau kua kav dej muaj cov yam ntxwv ntawm corrosion tsis kam, kub tsis kam thiab siab kub tsis kam.Tsuas yog hais lus, lawv muaj cov yam ntxwv sib txawv thiab kev ua haujlwm:
304: Ordinary corrosion kuj thiab kub resistant stainless hlau seamless yeeb nkab, 304 muaj zoo tiv thaiv intergranular corrosion, zoo corrosion kuj, txias ua hauj lwm thiab stamping kev kawm, thiab yuav siv tau raws li tshav kub-resistant stainless hlau.Nyob rau tib lub sijhawm, cov khoom siv kho tshuab ntawm cov hlau tseem zoo ntawm -180 ° C.Nyob rau hauv lub xeev kev daws teeb meem, cov hlau muaj zoo plasticity, toughness thiab txias workability;nws muaj kev tiv thaiv corrosion zoo hauv oxidizing acids, huab cua, dej thiab lwm yam xov xwm.
304L yog qhov sib txawv ntawm 304 stainless hlau nrog cov ntsiab lus qis dua thiab siv qhov vuam yuav tsum tau ua.Cov ntsiab lus qis dua txo qis cov nag lossis daus ntawm carbides nyob rau hauv thaj chaw uas muaj kev kub ntxhov nyob ze ntawm qhov vuam, uas tuaj yeem ua rau muaj kev cuam tshuam ntawm intergranular corrosion (weld attack) hauv stainless hlau hauv qee qhov chaw.
Qhov kev tiv thaiv corrosion ntawm 316/316L stainless hlau yeeb nkab yog zoo dua li ntawm 304 stainless hlau yeeb nkab, thiab nws muaj corrosion kuj zoo nyob rau hauv cov txheej txheem ntawm cov ntaub so ntswg thiab ntawv.Vim qhov sib ntxiv ntawm Mo, nws muaj kev tiv thaiv corrosion zoo heev, tshwj xeeb tshaj yog pitting tsis kam;kub kub lub zog kuj zoo heev;zoo heev ua hauj lwm hardening (tsis muaj zog hlau nplaum tom qab ua);non-magnetic in solid solution state.Nws kuj muaj qhov ua tau zoo rau cov tshuaj chloride corrosion, yog li nws feem ntau yog siv rau hauv marine ib puag ncig lossis kev tsim kho los ntawm hiav txwv.
321 stainless hlau yog Ni-Cr-Ti hom austenitic stainless hlau muaj yeeb nkab, nws qhov kev ua tau zoo zoo ib yam li 304, tab sis vim muaj cov hlau titanium ntxiv, nws muaj qhov zoo dua intergranular corrosion kuj thiab kub siab zog.Vim qhov sib ntxiv ntawm cov hlau titanium, nws zoo tswj cov tsim ntawm chromium carbide.321 stainless hlau tau zoo heev kub siab rupture (Stress Rupture) kev ua tau zoo thiab kub creep tsis kam (Creep Resistance) kev ntxhov siab txhua yam khoom zoo dua 304 stainless hlau.Ti nyob rau hauv 321 stainless hlau yeeb nkab muaj nyob rau hauv lub stabilizing lub caij, tab sis nws kuj yog ib tug kub-lub zog steel qib, uas yog zoo dua li 316L nyob rau hauv cov nqe lus ntawm kub kub.Nws muaj kev tiv thaiv corrosion zoo hauv cov organic thiab inorganic acids ntawm qhov sib txawv ntawm qhov sib txawv thiab qhov kub thiab txias, tshwj xeeb tshaj yog nyob rau hauv oxidizing media, thiab yog siv los tsim cov ntaub hauv ob sab phlu thiab cov kav dej rau cov thawv hnav-resistant acid thiab cov khoom hnav-resistant.Nws muaj qhov kub thiab txias tsis kam, feem ntau nyob ib ncig ntawm 700 degrees, thiab feem ntau siv hauv cov nroj tsuag hluav taws xob.Siv rau cov tshuab ua teb hauv kev lag luam chemical, thee thiab roj av uas yuav tsum tau muaj kev tiv thaiv zoo rau cov qoob loo ciam teb corrosion, tshav kub-resistant qhov chaw ntawm cov khoom siv hauv tsev thiab cov khoom uas nyuaj rau kev kho cua sov.
310S: Feem ntau siv oxidation tsis kam, corrosion kuj, kub resistant industrial stainless hlau seamless yeeb nkab thiab muaj welded yeeb nkab.Kev siv dav dav: cov khoom siv rau lub qhov cub, cov khoom siv rau tsheb purification li.310S stainless hlau yeeb nkab yog austenitic chromium-nickel stainless hlau nrog zoo heev kub oxidation tsis kam, acid thiab alkali tsis kam, thiab corrosion kuj.Vim tias cov ntsiab lus siab dua ntawm chromium (Cr) thiab npib tsib xee (Ni), nws muaj zog nkag tau zoo dua.Nws tuaj yeem ua haujlwm tsis tu ncua ntawm qhov kub thiab txias thiab muaj kev kub siab ua haujlwm zoo.Thaum qhov kub siab tshaj 800, nws pib muag, thiab qhov kev cia siab tau pib txo qis tsis tu ncua.Qhov siab tshaj plaws kev pabcuam kub yog 1200 ° C, thiab qhov kub siv tas mus li yog 1150 ° C.High kub resistant steel kav yog tshwj xeeb yog siv nyob rau hauv lub tsim ntawm hluav taws xob rauv raj thiab lwm yam sij hawm.Tom qab nce cov ntsiab lus carbon hauv austenitic stainless hlau, lub zog yog txhim kho vim nws cov khoom muaj zog ntxiv zog.Cov tshuaj muaj pes tsawg leeg ntawm austenitic stainless hlau yog raws li chromium thiab npib tsib xee.Cov khoom xws li molybdenum, tungsten, niobium thiab titanium yog ntxiv rau hauv paus.Vim tias nws lub koom haum yog lub ntsej muag-centered cubic qauv, nws muaj lub zog siab thiab creep lub zog ntawm qhov kub thiab txias.
Post lub sij hawm: Jan-31-2023
