Vim li cas stainless hlau kuj xeb? Thaum kawg xam pom nws!

Vim li cas stainless hlau kuj xeb?

Thaum cov xim av xeb (spots) tshwm rau saum npoo ntawm cov kav hlau stainless, cov neeg xav tsis thoob: "Stainless hlau tsis xeb, thiab yog tias nws xeb, nws tsis yog stainless hlau, thiab tej zaum yuav muaj teeb meem nrog cov hlau." Qhov tseeb, qhov no yog ib qho kev xav tsis zoo txog kev tsis nkag siab ntawm stainless hlau. Stainless hlau kuj yuav xeb nyob rau hauv tej yam kev mob.

Stainless hlau muaj peev xwm tiv taus atmospheric oxidation - uas yog, xeb kuj, thiab nws kuj muaj peev xwm corrode nyob rau hauv xov xwm uas muaj acids, alkalis, thiab ntsev - uas yog, corrosion kuj. Txawm li cas los xij, qhov loj ntawm nws lub peev xwm los tiv thaiv corrosion nws txawv nrog cov tshuaj muaj pes tsawg leeg ntawm nws cov hlau nws tus kheej, lub xeev ntawm kev sib nrig sib ntxiv, cov xwm txheej ntawm kev siv thiab hom kev tshaj tawm ib puag ncig. Piv txwv li, 304 steel yeeb nkab muaj peev xwm tiv thaiv corrosion zoo heev nyob rau hauv qhov chaw qhuav thiab huv si, tab sis yog tias nws tau txav mus rau thaj tsam ntawm ntug hiav txwv, nws yuav xeb sai sai hauv hiav txwv pos uas muaj ntsev ntau; thiab 316 steel yeeb nkab qhia tau hais tias zoo.

Yog li ntawd, nws tsis yog txhua yam ntawm stainless hlau uas tuaj yeem tiv taus corrosion thiab xeb hauv ib puag ncig.aluminium qhov

Muaj ntau hom kev puas tsuaj rau cov zaj duab xis nto, feem ntau hauv lub neej txhua hnub yog raws li hauv qab no:
Stainless hlau cia siab rau ntawm nyias nyias, ruaj, zoo thiab ruaj khov chromium-nplua nuj oxide zaj duab xis (tiv thaiv zaj duab xis) tsim rau ntawm nws qhov chaw los tiv thaiv qhov nruam infiltration thiab oxidation ntawm oxygen atoms kom tau txais lub peev xwm los tiv thaiv xeb. Thaum cov yeeb yaj kiab raug puas tsuaj tsis tu ncua vim qee yam, cov pa oxygen atoms hauv huab cua lossis cov kua yuav nkag mus ntxiv lossis cov hlau atoms hauv cov hlau tseem yuav sib cais tawm, tsim cov hlau oxide xoob, thiab cov hlau saum npoo yuav txuas ntxiv corroded. Muaj ntau hom kev puas tsuaj rau zaj duab xis saum npoo, feem ntau hauv lub neej niaj hnub yog cov hauv qab no:
1. Nyob rau saum npoo ntawm stainless hlau, muaj deposits ntawm hmoov av los yog heterogeneous hlau hais uas muaj lwm yam hlau ntsiab. Nyob rau hauv cov huab cua ntub, cov dej condensed nruab nrab ntawm cov deposits thiab stainless hlau txuas ob mus rau hauv ib tug micro-battery, uas ua rau ib tug electrochemical cov tshuaj tiv thaiv. , tiv thaiv zaj duab xis puas, hu ua electrochemical corrosion.stamping qhov
2. Cov kua txiv hmab txiv ntoo (xws li zaub, noodle kua zaub, hnoos qeev, thiab lwm yam) ua raws li cov hlau tsis huv. Nyob rau hauv lub xub ntiag ntawm dej thiab oxygen, organic acids yog tsim, thiab organic acids yuav corrode hlau nto rau lub sij hawm ntev.
3. Qhov saum npoo ntawm stainless hlau adheres rau cov khoom uas muaj acids, alkalis thiab ntsev (xws li alkali dej thiab txiv qaub dej txaws los ntawm cov phab ntsa kho kom zoo nkauj), ua rau lub zos corrosion.
4. Nyob rau hauv cov huab cua phem (xws li cov huab cua uas muaj ntau cov sulfide, carbon oxide, nitrogen oxide), thaum nws ntsib condensed dej, nws yuav tsim sulfuric acid, nitric acid, thiab acetic acid kua ntsiab lus, ua rau cov tshuaj corrosion.
Txhawm rau ua kom lub ntsej muag ci ntsa iab tsis muaj xeb, peb pom zoo:
Cov xwm txheej saum toj no tuaj yeem ua rau kev puas tsuaj rau cov yeeb yaj kiab tiv thaiv ntawm cov hlau tsis huv thiab ua rau xeb. Yog li ntawd, txhawm rau xyuas kom meej tias cov hlau nto yog qhov ci ntsa iab thiab tsis xeb, peb pom zoo:
1. Qhov saum npoo ntawm cov hniav stainless hlau yuav tsum tau muab ntxuav thiab txhuam tsis tu ncua kom tshem tawm cov ntawv txuas thiab tshem tawm cov khoom siv sab nraud uas ua rau kev hloov kho.
2. 316 stainless hlau yuav tsum tau siv nyob rau hauv seaside cheeb tsam, uas yuav tiv taus seawater corrosion.
3. Cov tshuaj muaj pes tsawg leeg ntawm qee cov kav hlau stainless ntawm lub khw tsis tuaj yeem ua tau raws li cov qauv hauv tebchaws thiab tsis tuaj yeem ua tau raws li 304 cov khoom siv. Yog li ntawd, nws tseem yuav ua rau xeb, uas yuav tsum tau ua tib zoo xaiv cov khoom los ntawm cov tuam txhab muaj npe nrov.

Puas yog stainless hlau kuj sib nqus?

Cov neeg feem ntau xav tias cov hlau nplaum nyiam cov hlau tsis huv los xyuas nws qhov zoo thiab qhov tsis zoo thiab nws qhov tseeb. Yog tias nws tsis nyiam cov hlau nplaum uas tsis yog hlau nplaum, nws suav tias yog qhov zoo, thiab nws yog qhov tseeb; yog tias nws yog magnetic, nws raug suav tias yog cuav. Qhov tseeb, qhov no yog ib qho tsis tshua muaj ib sab, tsis muaj tseeb thiab tsis ncaj ncees lawm txoj kev qhia.
Muaj ntau ntau hom stainless hlau, uas tuaj yeem muab faib ua ntau pawg raws li cov qauv ntawm chav tsev kub:
1. Austenitic hom: xws li 201, 202, 301, 304, 316, thiab lwm yam;
2. Martensite lossis ferrite hom: xws li 430, 420, 410, thiab lwm yam;

Hom austenitic yog tsis sib nqus lossis tsis muaj zog sib nqus, thiab martensite lossis ferrite yog sib nqus.tig ib feem
Feem ntau ntawm cov hlau tsis muaj hlau feem ntau yog siv rau cov nplooj ntawv zoo nkauj yog cov khoom siv austenitic 304, uas feem ntau tsis muaj hlau nplaum lossis tsis muaj zog sib nqus, tab sis kuj tseem tuaj yeem tshwm sim sib nqus vim qhov hloov pauv ntawm cov tshuaj muaj pes tsawg leeg lossis cov txheej txheem sib txawv los ntawm kev sib tsoo, tab sis qhov no tsis tuaj yeem xav txog. as a

Cov khoom cuav lossis cov khoom tsis zoo, yog vim li cas qhov no?

Raws li tau hais los saum toj no, austenite tsis yog hlau nplaum lossis tsis muaj zog sib nqus, thaum martensite lossis ferrite yog sib nqus. Vim muaj kev sib cais los yog kev kho cua sov tsis tsim nyog thaum smelting, me me ntawm martensite lossis ferrite hauv austenitic 304 stainless hlau yuav tshwm sim. lub cev nqaij daim tawv. Ua li no, 304 stainless hlau yuav muaj zog hlau nplaum.

Tsis tas li ntawd, tom qab ua haujlwm txias ntawm 304 stainless hlau, cov qauv kuj tseem yuav hloov mus rau hauv martensite. Qhov ntau dua qhov txias ua haujlwm deformation, qhov hloov pauv martensite ntau dua, thiab ntau dua cov khoom sib nqus ntawm cov hlau. Zoo li ib pawg ntawm cov hlau strips, Φ76 hlab yog tsim tsis muaj kev sib nqus sib nqus, thiab Φ9.5 hlab yog tsim. Qhov sib nqus induction yog pom tseeb dua vim qhov loj deformation ntawm kev khoov thiab khoov. Lub deformation ntawm lub square square raj yog loj dua li ntawm lub round tube, tshwj xeeb tshaj yog nyob rau hauv lub kaum sab xis, lub deformation yog ntau khaus thiab lub magnetic quab yuam yog pom tseeb.

Txhawm rau kom tshem tawm tag nrho cov khoom sib nqus ntawm 304 steel los ntawm cov laj thawj saum toj no, cov qauv austenite ruaj khov tuaj yeem rov qab los ntawm kev kho kub kub, yog li tshem tawm cov khoom sib nqus.

Tshwj xeeb, cov hlau nplaum ntawm 304 stainless hlau tshwm sim los ntawm cov laj thawj saum toj no yog qhov sib txawv ntawm cov hlau nplaum ntawm lwm cov ntaub ntawv xws li 430 thiab carbon hlau, uas txhais tau hais tias cov hlau nplaum ntawm 304 steel ib txwm qhia tsis muaj zog hlau nplaum.

Qhov no qhia peb tias yog cov hlau tsis muaj hlau tsis muaj zog hlau nplaum los yog tsis muaj hlau nplaum, nws yuav tsum raug txiav txim raws li 304 lossis 316 khoom; Yog hais tias nws yog tib yam li carbon steel, nws qhia tau hais tias muaj zog hlau nplaum, vim hais tias nws yog txiav txim raws li tsis 304 khoom.