Muaj peb yam tseem ceeb cuam tshuam rau stainless hlau corrosion hauv qab no:
1.Cov ntsiab lus ntawm alloying ntsiab lus, feem ntau hais lus, cov ntsiab lus ntawm chromium nyob rau hauv 10.5% steel yuav tsis xeb yooj yim.
Qhov siab dua cov ntsiab lus ntawm chromium thiab npib tsib xee, qhov zoo dua qhov corrosion kuj.Piv txwv li,
Cov ntsiab lus ntawm nickel hauv 304 cov khoom yog 8-10%, thiab cov ntsiab lus ntawm chromium nce mus txog 18-20%.
Xws li stainless hlau yuav tsis xeb nyob rau hauv ib txwm muaj xwm txheej.
| Qib | Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Txuj |
| 1070 | 0.2 | 0.25 | 0.04 ib | 0.03 ib | 0.03 ib | / | 0.04 ib | 0.03 ib | EN / ASTM daim ntawv pov thawj |
| 3003 | 0.6 | 0.7 | 0.05-0.2 hli | 1.0-1.5 hli | / | / | 0.10 | / | EN / ASTM daim ntawv pov thawj |
| 5052 ib | 0.25 | 0.40 Nws | 0.10 | 0.10 | 2.2-2.8 | 0.15-0.35 dr hab | 0.10 | 0.10 | EN / ASTM daim ntawv pov thawj |
2.Cov txheej txheem smelting ntawm cov chaw tsim khoom kuj tseem cuam tshuam rau corrosion kuj ntawm stainless hlau.
Ib tug loj stainless hlau cog nrog zoo smelting technology,
Cov cuab yeej siv siab heev thiab cov thev naus laus zis siab heev tuaj yeem lav qhov kev tswj hwm ntawm cov ntsiab lus alloying,
tshem tawm cov impurities, thiab tswj cov cua txias ntawm lub billet,
yog li cov khoom lag luam zoo ruaj khov thiab txhim khu kev qha, qhov zoo sab hauv yog qhov zoo, thiab nws tsis yooj yim rau xeb.Ntawm qhov tsis sib xws,
qee qhov me me steel mills muaj cov khoom siv rov qab thiab siv tshuab.Thaum lub sij hawm smelting,
impurities tsis tuaj yeem raug tshem tawm, thiab cov khoom tsim tawm yuav inevitably xeb.
3.Sab nraud ib puag ncig, qhov chaw qhuav thiab qhov cua tsis yooj yim rau xeb.Txawm li cas los xij,
huab cua av noo yog siab, tsis tu ncua los nag huab cua, los yog ib puag ncig nrog pH siab nyob rau hauv cov huab cua yog yooj yim rau xeb.
304 stainless hlau, yog tias ib puag ncig ib puag ncig tsis zoo, nws yuav xeb.
Ntau tus neeg muas zaub mus rau tom khw mus yuav cov hlau tsis muaj steel thiab nqa cov hlau nplaum me me nrog lawv.
Yog tsis muaj hlau nplaum, yuav tsis muaj xeb.Qhov tseeb, qhov no yog kev nkag siab yuam kev.
Cov hlau tsis sib nqus hlau tsis sib nqus yog txiav txim siab los ntawm cov qauv ntawm cov qauv.
Thaum lub sij hawm solidification txheej txheem, cov hlau molten yuav tsim "ferrite", "austenite",
"martensite" thiab lwm yam stainless hlau nrog cov qauv sib txawv.Ntawm lawv,
"ferrite" "Lub cev" thiab "Martensitic" stainless hlau yog tag nrho cov hlau nplaum.
"Austenitic" stainless hlau muaj cov khoom zoo tag nrho,
txheej txheem kev ua tau zoo thiab weldability, tab sis tsuas yog nyob rau hauv cov nqe lus ntawm corrosion kuj,
Sib nqus "ferritic" stainless hlau muaj zog dua "austenitic" stainless hlau.
Tam sim no, lub thiaj li hu ua 200 series thiab 300 series stainless hlau nrog siab
manganese cov ntsiab lus thiab cov ntsiab lus tsis tshua muaj npib tsib xee hauv khw tsis yog hlau nplaum,
tab sis lawv qhov kev ua tau zoo sib txawv ntawm 304 nrog cov ntsiab lus siab nickel.Hloov chaw,
304 tau stretched, annealed, polished, thiab casting.Cov txheej txheem kev kho mob kuj tseem yuav yog micro-magnetic,
yog li nws yog ib qho kev to taub yuam kev thiab tsis muaj kev tshawb fawb los txiav txim qhov zoo ntawm stainless hlau yam tsis muaj hlau nplaum.
Post lub sij hawm: Aug-19-2020