Dab tsi yog cov khoom tseem ceeb ntawm API 5L Qib X52 kav?

Mechanical zog
Yield zog: Qhov tsawg kawg nkaus lub zog ntawm X52 yeeb nkab yog 358MPa (52 ksi). Yield zog yog ib qho tseem ceeb qhia ntawm qhov pib ntawm cov yas deformation ntawm cov yeeb nkab nyob rau hauv siab, kom ntseeg tau tias cov yeeb nkab muaj peev xwm tswj tau qhov stability ntawm cov duab thiab cov qauv nyob rau hauv ib tug tej yam siab.
Lub zog tensile: Feem ntau lub zog tensile siab tshaj qhov tawm los ntawm ib qho kev faib ua feem, feem ntau ntawm 450MPa thiab 755MPa, uas ua rau cov yeeb nkab tuaj yeem tiv taus lub zog tensile yam tsis tawg yooj yim. Nyob rau hauv tus txheej txheem ntawm conveying nruab nrab, nws muaj peev xwm tiv taus lub tensile kev nyuaj siab los ntawm sab hauv siab, sab nraud load, thiab lwm yam.
Impact toughness: Nws muaj qee yam kev cuam tshuam toughness, tshwj xeeb tshaj yog nyob rau hauv qhov kub thiab txias ib puag ncig, qhov kev cuam tshuam toughness yuav tsum yog qhov tseem ceeb tshaj los tiv thaiv qhov cuam tshuam cov load uas yuav ntsib thaum lub sij hawm thauj, installation thiab siv. Nws yog feem ntau ntsuas los ntawm Charpy impact test, xws li kev cuam tshuam lub zog ntawm -20 degree yuav tsum tau raws li tus nqi.
Hardness: Nws hardness yog nruab nrab, tsis siab dhau los ua teeb meem ua, los yog tsawg dhau los cuam tshuam rau nws hnav tsis kam thiab deformation kuj. Brinell hardness feem ntau yog nyob ib ncig ntawm 180HB.
Cov khoom siv tshuaj
Corrosion tsis kam: Nws tuaj yeem tiv taus corrosion ntawm qhov nruab nrab conveying thiab ib puag ncig ib puag ncig rau qee yam. Qhov tsim nyog ua ke ntawm cov ntsiab lus alloy hauv nws cov tshuaj muaj pes tsawg leeg, xws li tooj liab, npib tsib xee, chromium, thiab lwm yam, pab txhim kho corrosion kuj ntawm cov kav dej hauv qee qhov chaw corrosive. Piv txwv li, nyob rau hauv ib puag ncig kev thauj mus los roj thiab roj uas muaj me me ntawm hydrogen sulfide, X52 kav dej tuaj yeem tswj tau cov tshuaj lom neeg zoo.
Antioxidation: Nyob rau hauv ib puag ncig kub, X52 pipeline muaj peev xwm tiv thaiv oxidation, uas tuaj yeem tiv thaiv cov raj xa dej los ntawm oxidation ntau dhau thaum sib cuag nrog oxygen thiab txuas ntxiv lub neej kev pab cuam ntawm cov kav dej.
Lub cev muaj zog
Qhov ceev: Nws qhov ceev yog li 7.85g / cm³, uas zoo ib yam li cov hlau zoo tib yam. Qhov no yog qhov tseem ceeb heev rau kev kwv yees qhov hnyav thiab kev txhawb nqa cov qauv tsim thaum lub sijhawm thauj mus los, kev teeb tsa thiab siv cov kav dej.
Thermal conductivity: Nws muaj qee yam thermal conductivity, uas tuaj yeem hloov cov cua sov kom zoo thiab tsis txhob muaj cua sov hauv zos thaum thauj cov xov xwm kub. Nyob rau tib lub sijhawm, qhov kev ua tau zoo no yuav tsum tau xav txog hauv kev tsim cov rwb thaiv tsev ntawm cov kav dej.
Linear expansion coefficient: Thaum qhov kub hloov pauv, cov kav dej yuav nthuav dav thiab cog lus vim cua sov thiab txias. Lub linear expansion coefficient ntawm X52 pipeline yog qhov ruaj khov. Hauv kev tsim thiab kev teeb tsa ntawm lub raj xa dej, nws yog ib qho tsim nyog yuav tsum tau khaws qee qhov kev nthuav dav thiab qhov chaw cog lus lossis siv cov kev them nyiaj sib raug zoo los tiv thaiv cov raj xa dej los ntawm kev deformation, kev puas tsuaj los yog to vim thermal expansion thiab contraction.