2507 stainless hlau yeeb nkab tseem hu ua 2507 duplex stainless hlau yeeb nkab. Nws ua ke ntau yam khoom zoo tshaj plaws ntawm ferritic steel thiab austenitic steel. Vim tias cov hlau muaj cov ntsiab lus chromium thiab molybdenum siab, nws muaj qhov zoo heev pitting corrosion kuj, crevice corrosion muaj peev xwm thiab zoo corrosion kuj. Lub bidirectional microstructure xyuas kom meej tias cov hlau muaj siab tiv thaiv kev ntxhov siab corrosion tawg, thiab lub zog txhua yam kuj siab.
Ib qho tseem ceeb ntawm 2507 stainless hlau yeeb nkab yog nws cov qauv duplex. Tsis tas li ntawd, nws yog feem ntau nrog rau kev tsim khoom ntawm lwm theem, thiab cov theem nrab no kuj muaj ntau dua los yog tsawg dua rau kev ua haujlwm ntawm cov hlau. Nyob rau hauv cov ntaub ntawv ntawm ob-theem steels, tshwj xeeb muaj pes tsawg leeg ntawm lub alloying caij yog lub hauv paus rau kev ua kom lub tsim ntawm ob-theem thiab kev sib raug zoo ntawm txhua theem. Cov theem kev sib raug zoo ntawm pawg metallographic tuaj yeem kwv yees los ntawm cov ntsiab lus ntawm cov ntsiab lus tseem ceeb.
2507 stainless hlau yeeb nkab muaj zog tiv taus rau hauv zos pitting, pitting thiab tawg cavitation corrosion, feem ntau yog vim muaj tshuaj lom neeg muaj pes tsawg leeg ntawm Mo, N thiab lwm yam. Tom qab xyoo ntawm kev tshawb fawb, qhov sib npaug PREN pitting resistance index tau tsim los rau kev soj ntsuam. Tus nqi siab dua, qhov muaj peev xwm tiv taus hauv zos pitting.
2507 stainless hlau yeeb nkab yog ib hom N duplex ferritic -austenitic stainless hlau, ultra-low carbon, nrog zoo corrosion kuj thiab txhua yam kev ua haujlwm. Nws yog dav siv nyob rau hauv teb xws li roj thiab roj, petrochemical thiab marine engineering. Txawm li cas los xij, thaum lub sij hawm kub dov, 2507 stainless hlau raj ib txwm nyob rau hauv ob-theem cheeb tsam, uas ua rau cov thermal ua hauj lwm tsis zoo thiab yooj yim ntug cracking defects, uas heev txwv tsis pub cov khoom ntawm no stainless hlau.
Tam sim no, muaj ntau cov ntaub ntawv qhia txog qhov kub thiab txias rheological nkhaus thiab thermal plasticity ntawm 2507 duplex stainless hlau yeeb nkab, tab sis muaj ob peb cov lus ceeb toom ntawm kub thermal plasticity ntawm nruam casting slab ntug qauv ntawm 2507 stainless hlau yeeb nkab ua nyob rau hauv kev lag luam.
Lub nruam casting billet yog corroded ntawm qis zog, thiab tus neeg sawv cev corrosive yog ib qho kev daws ntawm ferric chloride thiab hydrochloric acid. Xav txog tias cheeb tsam columnar crystalline yog cov thermoplastic tsawg dua li thaj tsam equiaxed crystalline, ib qho qauv raug xaiv los ntawm cheeb tsam columnar crystalline. Ua cov qauv rau hauv Φ5mm × 69mm kub tensile qauv. Ob qhov kawg ntawm cov qauv yog ua tiav rau hauv dav M10mm threads, uas yog yooj yim rau kev kho cov qauv.
