Kev Ntsuam Xyuas Kev Ua Haujlwm Ntawm 409 Kub-resistant Ferritic Stainless Hlau Yeeb Nkab
Tso lus
Kev soj ntsuam kev ua tau zoo ntawm 409 tshav kub-resistant ferritic stainless hlau yeeb nkab
409 stainless hlau yog lub tshav kub-resistant ferritic stainless hlau, thiab lub tsheb tso qhov chaw ua nrog nws muaj oxidation tsis kam thiab corrosion kuj. Qhov no stainless hlau alloy tuaj yeem ua rau hauv tsheb mufflers, manifolds, tso cov kav dej, catalytic converters, mufflers thiab cov kav dej tso tawm. Qhov zoo tshaj plaws formability, weldability thiab corrosion kuj ntawm 409 stainless hlau ua rau nws siv nyob rau hauv ntau lwm yam teb, xws li culverts, tsev cua sov rauv, automotive thermostators, roj lim transformer vaj tse thiab cov khoom ua liaj ua teb.
409 ferritic stainless hlau yog zoo nyob rau hauv feem ntau cov cheeb tsam, tab sis intergranular corrosion yuav tshwm sim nyob rau hauv vuam tshav kub cuam tshuam cheeb tsam nyob rau hauv ib co muaj kev siv. Lub titanium thiab niobium cov ntsiab lus ntawm cov hlau yog ua tib zoo sib xyaw kom tiv thaiv qhov rhiab heev thiab intergranular corrosion uas yuav tshwm sim nyob rau hauv qhov chaw uas muaj cua sov los yog lwm yam thermal raug ntawm niam txiv hlau. Cov khoom ruaj khov qhov sib npaug sib npaug, tsis muaj annealing tom qab vuam kom rov qab ductility, koj tuaj yeem tau txais weldability zoo. Nws cov formability thiab toughness kuj yuav txhim kho.
409HP stainless hlau yog patented tshuaj muaj pes tsawg leeg ntawm stainless hlau. Zoo li lwm yam 409 alloys, 11% chromium cov ntsiab lus ua rau nws tiv taus corrosion dua li carbon hlau. Qhov no stainless hlau muaj txaus oxidation tsis kam thiab corrosion kuj ua rau nws zoo tagnrho rau automotive emissions system daim ntaub ntawv. Alloys uas muaj 18% chromium tuaj yeem siv rau sab kub tawm. Lub 409HP alloy muaj kev ua haujlwm zoo thiab siv tag nrho hauv cov ntawv thov uas tsis yog tsheb.
Hais txog kev ntxhov siab tawg, cov ntaub ntawv tawg ntawm 409 thiab 439 alloys nyob ze rau ib leeg ntawm 649 degree, thaum lub sij hawm tawg ntawm 439 alloy yuav ntev me ntsis nyob rau hauv kev ntxhov siab tshwj xeeb. Thiab vim tias cov ntsiab lus siab chromium hauv 439 alloy, lub sijhawm tawg ntawm cov khoom siv yuav ntev dua thaum muaj kev ntxhov siab 10.3MPa lossis qis dua ntawm 816 degree.
Nyob rau hauv cov nqe lus ntawm toughness, zoo li lwm yam ferritic stainless hlau, nyob rau hauv cov kev cuam tshuam load, nrog rau txo qhov kub thiab txias, yuav muaj kev hloov ntawm ductility mus rau brittleness. Kev hloov pauv ntawm qhov kub thiab txias yog qhov ua haujlwm ntawm ntau yam, suav nrog kev kho cua sov, microstructure, lub xeev kev ntxhov siab, kev thauj khoom tus nqi, qhov tsis zoo, thickness, thiab cov khoom sib xws. Feem ntau 4.77mm thiab siab dua thickness ntawm 409 stainless hlau phaj, DBTT tus nqi siab dua li chav tsev kub, qhia tias cov phaj yuav nyuaj rau kev ua haujlwm vim yog tawg tawg.
Nyob rau hauv cov nqe lus ntawm corrosion kuj, 409 stainless hlau alloy muaj cov ntsiab lus chromium ntawm 11%. Piv nrog cov pa roj carbon steel, qhov corrosion kuj ntawm cov khoom siv stainless hlau no zoo heev. Txawm li cas los xij, piv nrog lwm cov hlau tsis muaj nqi siab nrog cov ntsiab lus siab chromium, tshwj xeeb tshaj yog cov ntsiab lus molybdenum, nws cov corrosion kuj yog tsawg. Txawm li cas los xij, 409 stainless hlau tuaj yeem pom muaj kev tiv thaiv corrosion txaus thiab oxidation tsis kam hauv ntau daim ntawv thov tsheb thiab tsis siv tsheb.
