Ntau tus neeg xav tias stainless hlau tsis yog hlau nplaum, thiab feem ntau siv cov hlau nplaum los txheeb xyuas seb cov khoom puas yog stainless hlau. Txoj kev txiav txim no yog qhov tseeb unscientific.
Stainless hlau yuav muab faib ua ob pawg raws li cov qauv ntawm chav tsev kub: austenite thiab martensite los yog ferrite. Hom austenitic yog tsis sib nqus lossis tsis muaj zog sib nqus, thiab hom martensite lossis ferritic yog sib nqus. Nyob rau tib lub sijhawm, tag nrho cov austenitic stainless hlau tuaj yeem ua tiav tsis yog hlau nplaum nkaus xwb hauv lub tshuab nqus tsev, yog li qhov tseeb ntawm stainless hlau tsis tuaj yeem txiav txim los ntawm cov hlau nplaum ib leeg.
Yog vim li cas austenitic hlau yog sib nqus: austenitic stainless hlau nws tus kheej muaj lub ntsej muag-centered cubic siv lead ua qauv, thiab saum npoo ntawm cov qauv yog paramagnetic, yog li cov qauv austenitic nws tus kheej tsis sib nqus. Txias deformation yog qhov mob sab nraud uas hloov ib feem ntawm austenite rau hauv martensite thiab ferrite. Feem ntau hais lus, tus nqi deformation ntawm martensite nce nrog qhov nce ntawm qhov txias deformation tus nqi thiab txo qhov deformation kub. Qhov ntawd yog hais tias, qhov loj dua qhov txias ua hauj lwm deformation, ntau martensitic transformation thiab lub zog sib nqus zog. Kub-tsim austenitic stainless hlau yog yuav luag tsis-sib nqus.
Cov txheej txheem ntsuas los txo cov permeability:
(1) Cov tshuaj muaj pes tsawg leeg yog tswj kom tau txais cov qauv austenite ruaj khov thiab kho qhov sib nqus permeability.
(2) Ua kom cov ntaub ntawv npaj kev kho mob ua ntu zus. Yog tias tsim nyog, martensite, δ-ferrite, carbide, thiab lwm yam hauv austenite matrix tuaj yeem rov ua dua los ntawm cov khoom siv kho mob kom cov qauv zoo sib xws thiab xyuas kom meej tias cov hlau nplaum permeability ua tau raws li qhov yuav tsum tau ua. Thiab tawm ntawm ib qho npoo rau kev ua haujlwm tom ntej.
(3) Kho cov txheej txheem thiab txoj hauv kev, ntxiv cov txheej txheem kho mob tom qab molding, thiab ntxiv cov txheej txheem pickling rau cov txheej txheem. Tom qab pickling, ua ib qho kev ntsuam xyuas sib nqus permeability kom tau raws li qhov yuav tsum tau ua ntawm μ (5) Xaiv cov cuab yeej tsim nyog thiab cov khoom siv, thiab xaiv cov cuab yeej ceramic los yog carbide los tiv thaiv qhov sib nqus permeability ntawm lub workpiece los ntawm kev cuam tshuam los ntawm cov khoom sib nqus ntawm cov cuab yeej. Hauv cov txheej txheem machining, ib qho me me txiav yog siv ntau li ntau tau los txo qhov tshwm sim ntawm martensitic transformation induced los ntawm kev ntxhov siab ntau dhau.
(6) Degaussing ntawm cov khoom tiav.
Post lub sij hawm: Sep-26-2022