Stainless hlauyog ib hom hlau, hlau hais txog cov pa roj carbon (C) hauv qab no 2% yog hu ua hlau, ntau tshaj 2% yog hlau. Hlau nyob rau hauv cov txheej txheem smelting ntxiv chromium (Cr), npib tsib xee (Ni), manganese (Mn), silicon (Si), titanium (Ti), molybdenum (Mo) thiab lwm yam alloying ntsiab los txhim kho kev ua tau zoo ntawm cov hlau kom steel muaj corrosion kuj (uas yog, tsis xeb) yog peb feem ntau hais tias stainless hlau.
Stainless hlau nyob rau hauv cov txheej txheem smelting, vim qhov sib ntxiv ntawm alloying ntsiab ntawm ntau yam sib txawv, txawv ntau yam ntawm tus nqi sib txawv. Nws cov yam ntxwv kuj txawv, txhawm rau txhawm rau paub qhov txawv ntawm cov yas ntawm cov hlau sib txawv.
Kev faib ua feem ntawm stainless hlau
1. 304 stainless hlau
304 stainless hlau yog ntau hom hlau, raws li cov hlau siv dav, muaj kev tiv thaiv corrosion zoo, kub tsis kam, kub tsis tshua muaj zog thiab txhua yam khoom; Stamping, dabtsi yog khoov thiab lwm yam thermal txheej txheem muaj peev xwm zoo, tsis muaj kev kho cua sov hardening tshwm sim (tsis muaj hlau nplaum, ces siv qhov kub ntawm -196 ℃ ~ 800 ℃).
Scope ntawm daim ntawv thov: cov khoom siv hauv tsev (1, 2 tableware, txee, cov kav dej hauv tsev, lub rhaub dej, boilers, da dej); Nws pib qhov chaw (windshield wiper, muffler, pwm khoom); Cov Khoom Siv Kho Mob, Cov Khoom Siv Hauv Tsev, Chemistry, Kev Lag Luam Khoom Noj, Kev Ua Liaj Ua Teb, Nkoj Yam
2. 304L stainless hlau (L yog carbon tsawg)
Raws li cov pa roj carbon tsawg 304 steel, nyob rau hauv lub xeev dav, nws cov corrosion kuj thiab 304 zoo ib yam, tab sis tom qab vuam los yog kev ntxhov siab tshem tawm, nws tsis kam mus rau grain ciam corrosion muaj peev xwm zoo heev; Nyob rau hauv cov ntaub ntawv uas tsis muaj kev kho cua sov, kuj muaj peev xwm tswj tau zoo corrosion kuj, siv kub -196 ℃ ~ 800 ℃.
Scope ntawm daim ntawv thov: siv nyob rau hauv cov tshuaj, thee thiab roj av industries nrog siab yuav tsum tau kev tiv thaiv rau grain ciam corrosion ntawm sab nraum zoov cov cav tov, lub tsev cov ntaub ntawv kub resistant qhov chaw thiab qhov chaw uas muaj teeb meem nyob rau hauv kev kho cua sov.
3. 316 stainless hlau
316 stainless hlau vim yog qhov sib ntxiv ntawm molybdenum, yog li nws cov corrosion kuj, atmospheric corrosion kuj thiab kub kub lub zog yog tshwj xeeb zoo, yuav siv tau nyob rau hauv hnyav tej yam kev mob; Kev ua haujlwm zoo heev (tsis sib nqus).
Scope ntawm daim ntawv thov: cov khoom siv dej hiav txwv, tshuaj, dyestuff, ntawv ua, oxalic acid, chiv thiab lwm yam khoom siv ntau lawm; Cov duab kos duab, kev lag luam khoom noj khoom haus, cov chaw ntug hiav txwv, cov hlua, CD rods, bolts, ceev.
4. 316L stainless (L yog carbon tsawg)
Raws li cov pa roj carbon tsawg ntawm 316 steel, ntxiv rau cov yam ntxwv zoo ib yam nrog 316 steel, nws tsis kam mus rau grain ciam corrosion yog zoo heev.
Scope ntawm daim ntawv thov: tshwj xeeb yuav tsum tau tiv thaiv grain ciam teb corrosion khoom.
Kev sib piv
1. Tshuaj muaj pes tsawg leeg
Stainless hlau 316 thiab 316L yog molybdenum uas muaj stainless hlau. Cov ntsiab lus molybdenum ntawm 316L stainless hlau yog me ntsis siab dua li ntawm 316 stainless hlau. Vim lub molybdenum nyob rau hauv cov hlau, tag nrho cov kev ua tau zoo ntawm cov hlau yog zoo dua li 310 thiab 304 stainless hlau. Nyob rau hauv qhov kub thiab txias, thaum cov concentration ntawm sulfuric acid tsawg dua 15% thiab ntau dua 85%, 316 stainless hlau muaj ntau yam kev siv. 316 stainless hlau kuj muaj cov khoom zoo thiab cov tshuaj chloride yaig, yog li nws feem ntau siv hauv Marine ib puag ncig. 316L stainless hlau muaj cov ntsiab lus siab tshaj plaws ntawm 0.03. Haum rau cov ntawv thov uas tsis tuaj yeem tom qab vuam annealing thiab qhov siab tshaj plaws corrosion kuj yuav tsum tau.
2. Corrosion tsis kam
Lub corrosion kuj ntawm 316 stainless hlau yog zoo dua li ntawm 304 stainless hlau. Nws muaj qhov zoo corrosion kuj nyob rau hauv cov txheej txheem ntawm cov ntaub ntawv thiab ntawv. Thiab 316 stainless hlau kuj yog resistant rau Marine thiab aggressive industrial cua yaig. Feem ntau, 304 stainless hlau thiab 316 stainless hlau nyob rau hauv cov tshuaj tiv thaiv corrosion ntawm me ntsis txawv, tab sis nyob rau hauv ib co kev tshaj tawm txawv.
304 stainless hlau yog Ameslikas tsim, uas yog rhiab rau Pitting Corrosion nyob rau hauv tej rooj plaub. Ntxiv ib qho ntxiv 2-3% molybdenum txo qhov rhiab heev, ua rau 316. Tsis tas li ntawd, cov molybdenum ntxiv tuaj yeem txo qhov corrosion ntawm qee cov organic acids kub.
316 stainless hlau tau yuav luag dhau los ua cov khoom siv hauv kev lag luam zaub mov thiab dej haus. Vim tias lub ntiaj teb tsis txaus ntawm molybdenum thiab cov ntsiab lus nickel ntau dua hauv 316 stainless hlau, 316 stainless hlau yog kim dua 304 stainless hlau.
Pitting corrosion yog ib qho tshwm sim feem ntau tshwm sim los ntawm corrosion tso rau saum npoo ntawm stainless hlau, uas yog vim tsis muaj oxygen thiab tsis tuaj yeem tsim cov txheej tiv thaiv ntawm chromium oxide. Tshwj xeeb tshaj yog nyob rau hauv me me li qub, muaj tsawg lub sij hawm ntawm deposition ntawm lub disc, yog li pitting yog tsawg.
Hauv ntau hom dej nruab nrab (dej distilled, dej haus, dej ntws, dej boiler, dej hiav txwv, thiab lwm yam), 304 stainless hlau thiab 316 stainless hlau corrosion kuj yuav luag tib yam, tshwj tsis yog cov ntsiab lus ntawm chloride ion nyob rau hauv nruab nrab yog siab heev, lub sij hawm no 316 stainless hlau yog tsim nyog. Feem ntau, qhov kev tiv thaiv corrosion ntawm 304 stainless hlau thiab 316 stainless hlau tsis txawv ntau, tab sis qee zaum kuj yuav txawv heev, yuav tsum tau soj ntsuam los ntawm rooj plaub.
3. Thaum tshav kub kub tsis kam
316 stainless hlau muaj oxidation zoo nyob rau hauv kev siv tsis tu ncua hauv qab 1600 degrees thiab siv tas li hauv qab 1700 degrees. Nyob rau hauv qhov ntau ntawm 800-1575 degrees, nws yog qhov zoo tshaj plaws kom tsis txhob muaj cov nyhuv txuas ntxiv ntawm 316 stainless hlau, tab sis nyob rau hauv qhov kub thiab txias ntawm kev siv 316 stainless hlau tsis tu ncua, cov hlau tsis muaj hlau tsis muaj cua sov zoo. 316L stainless hlau muaj kev tiv thaiv zoo rau carbide nag lossis daus dua 316 stainless hlau, uas tuaj yeem siv rau hauv qhov kub thiab txias.
4. Kev kho cua sov
Annealing yog ua nyob rau hauv qhov kub ntawm 1850 mus rau 2050 degrees, ua raws li los ntawm annealing sai thiab sai txias. 316 stainless hlau tsis tuaj yeem overheated rau harden.
5. Kev vuam
316 stainless hlau muaj peev xwm weld zoo. Txhua txoj kev vuam txheej txheem tuaj yeem siv rau vuam. Raws li lub hom phiaj ntawm vuam, 316CB, 316L lossis 309CB stainless hlau ntim pas nrig lossis electrode tuaj yeem siv rau vuam. Yuav kom tau txais qhov zoo tshaj plaws corrosion kuj, qhov vuam seem ntawm 316 stainless hlau yuav tsum tau muab tshem tawm tom qab vuam. Post weld annealing tsis tas yuav tsum yog 316L stainless hlau siv.
Hikelokstainless hlau seamless tubingsiv cov khoom siv 316L. Lwm cov raj fittings thiab li qub feem ntau siv 316 cov khoom.
Post lub sij hawm: Feb-23-2022