Stainless hlau welded kav kuj tau siv dav hauv kev tsim khoom. Ntau tus neeg tsuas paub tias cov kav hlau tsis muaj steel hlau muaj kev tiv thaiv - oxidation thiab tiv thaiv - corrosion, tab sis tsawg tus paub tias lawv yog hlau nplaum. Tam sim no cia peb tham txog yuav ua li cas txheeb xyuas cov hlau nplaum ntawm stainless hlau welded kav.
Austenite tsis yog - sib nqus los yog tsis muaj zog sib nqus, thaum martensite lossis ferrite yog hlau nplaum. Vim muaj kev sib cais sib cais thaum smelting los yog kev kho cua sov tsis zoo, me me ntawm martensite lossis ferrite qauv yuav tshwm sim hauv austenitic stainless hlau. Nyob rau hauv no txoj kev, stainless hlau yuav muaj ib tug faint magnetic khoom. Tsis tas li ntawd, tom qab ua haujlwm txias, microstructure ntawm stainless hlau tseem yuav hloov mus rau martensite. Qhov ntau dua qhov deformation thaum lub sijhawm ua haujlwm txias, qhov hloov pauv martensite ntau dua, thiab cov khoom sib nqus ntawm cov hlau ntau dua.
Zoo li ib pawg ntawm steel strips, zus tau tej cov Φ76 raj, tsis muaj cuab kev sib nqus induction, zus tau tej cov Φ9.5 raj. Vim qhov loj bending deformation, qhov sib nqus induction yog pom tseeb dua. Rau kev tsim cov raj square thiab cov duab plaub, qhov deformation yog ntau dua li ntawm cov raj puag ncig, tshwj xeeb tshaj yog nyob rau ntawm lub kaum sab xis, qhov deformation yog khaus ntau dua thiab cov hlau nplaum induction yog ntau pronounced. Txhawm rau tshem tawm tag nrho cov hlau nplaum ntawm cov hlau uas tshwm sim los ntawm cov laj thawj saum toj no, siab - kev kho qhov kub thiab txias tuaj yeem ua tiav los kho cov qauv austenite ruaj khov, yog li tshem tawm cov hlau nplaum. Yuav kom suav tau, cov hlau nplaum ntawm stainless hlau welded kav los ntawm cov laj thawj saum toj no tsis nyob rau tib theem li ntawm lwm hom stainless hlau, xws li 430 thiab carbon hlau. Hauv lwm lo lus, cov hlau nplaum ntawm cov hlau ib txwm qhia tsis muaj zog hlau nplaum.
Qhov no qhia peb tias yog tias cov hlau tsis muaj hlau tsis muaj zog hlau nplaum los yog tsis muaj - sib nqus, nws yuav tsum raug txheeb xyuas los yog 316 cov khoom. Yog hais tias nws qhia tau hais tias muaj zog hlau nplaum zoo li carbon steel, nws yuav tsum raug txheeb xyuas tias tsis yog cov khoom qub. Cov ntsiab lus saum toj no yog cov lus piav qhia ntau dua ntawm cov khoom sib nqus ntawm stainless hlau welded kav.
