ASTM A192 yog tus qauv boiler raj siv tau rau seamless carbon steel boiler raj nrog diameters li ntawm 1/2 nti mus rau 7 ntiv tes thiab phab ntsa thickness ntau dua 0.049 nti. Cov qauv no xav kom cov raj ua kom tau raws li cov kev xav tau ntawm cov khoom siv kho tshuab thiab tshuaj lom neeg muaj pes tsawg leeg.
ASTM A192 kuj tseem qhia txog cov txheej txheem tsim cov raj thiab cov qauv ntsuas. Piv txwv li, cov txheej txheem tsim khoom yuav tsum muaj xws li kev kho cua sov, kev ua haujlwm txias, degassing, thiab quenching, thaum kuaj cov qauv suav nrog kev sim dav dav thiab tshwj xeeb.
A192 carbon steel seamless yeeb nkab Loj Specifications
Sab Nrauv Qhov Loj: Feem ntau 1/2 nti rau 7 ntiv tes (12.7 txog 177.8 mm), tab sis lwm qhov ntau thiab tsawg kuj muaj nyob rau hauv uas lawv ua tau raws li lwm cov kev cai ntawm tus qauv.
Phab ntsa Thickness Range: Yam tsawg kawg ntawm phab ntsa thickness yog 0.085 nti rau 1,000 nti (2.2 txog 25.4 hli), suav nrog cov nqi ciam teb.
Length Requirements: Muaj nyob rau hauv ib qho random ntev, ob chav random ntev, lossis raws li cov neeg siv khoom xav tau; Qhov siab tshaj plaws yog feem ntau 27 m.
A192 Heat Exchanger Tube Chemical Composition
Cov ntsiab lus carbon yog nruab nrab ntawm 0.06% thiab 0.18%. Cov ntsiab lus tsis tshua muaj carbon no pab txhim kho qhov toughness thiab weldability ntawm cov yeeb nkab steel, ua kom nws zoo dua tiv thaiv cov kev ntxhov siab ib puag ncig hauv siab - cov cuab yeej siv siab.
Silicon cov ntsiab lus tsis pub tshaj 0.25%. Silicon feem ntau ua raws li deoxidizer hauv steel, ua rau nws lub zog thiab hardness, thiab tseem pab txhawb kev txhim kho cov hlau... Corrosion kuj.
Manganese cov ntsiab lus yog 0.27% -0.63%. Manganese txhim khu lub zog thiab hardness ntawm hlau, refines nplej, thiab txhim kho cov hnav tsis kam thiab qaug zog tsis kam ntawm steel kav.
Cov ntsiab lus phosphorus thiab sulfur yog ob qho tib si txwv rau qis dua 0.035%. Kev tswj xyuas nruj ntawm ob lub ntsiab lus impurity no ua tau zoo kom tsis txhob muaj qhov tsis xws luag xws li kev puas tsuaj los ntawm cov impurities ntau dhau, kom ntseeg tau qhov zoo thiab kev ntseeg siab ntawm cov yeeb nkab steel.
A192 seamless Steel yeeb nkab Mechanical zog
Tensile zog: Tsis pub tsawg tshaj 325MPa. Lub zog tensile siab ua rau nws tuaj yeem tiv taus lub zog axial tensile tsim thaum lub sijhawm ua haujlwm siab - cov cuab yeej siv siab, kom ntseeg tau tias cov raj xa dej yuav tsis tawg nyob rau hauv siab.
Yield zog: Tsis pub tsawg tshaj 180MPa. Yield zog txiav txim siab deformation yam ntxwv ntawm cov yeeb nkab steel nyob rau hauv kev ua hauj lwm siab, xyuas kom meej tias cov steel yeeb nkab tsuas yog undergoes me ntsis yas deformation nyob rau hauv siab siab, tswj ... Stable Structure.
Elongation: Tsis pub tsawg dua 35%. Zoo elongation muab cov yeeb nkab steel zoo heev toughness, tso cai rau nws tsis muaj zog los ntawm deformation thaum raug cuam tshuam xws li kev hloov pauv siab thiab dej rauj, tsis txhob nkig tawg.
Hardness: Hardness tsis tshaj 77 HRB. Qhov tsim nyog hardness ntau ua kom ntseeg tau tias cov yeeb nkab steel muaj ob lub zog txaus thiab kev ua haujlwm zoo, ua kom yooj yim rau kev ua haujlwm tom qab xws li khoov thiab flaring kom tau raws li cov qauv tsim qauv ntawm ntau yam khoom siv siab -.
A192 Boiler raj Txheej Txheem
Nws tuaj yeem tsim tau siv cov txheej txheem ua haujlwm kub lossis txias. Kub- cov kav hlau ua haujlwm tsis tas yuav tsum tau kho cua sov, thaum txias - cov kav hlau ua haujlwm yuav tsum tau kho cua sov ntawm 1200℃F (650 degree) lossis siab dua tom qab ua haujlwm txias kawg kom tshem tawm cov kev ntxhov siab sab hauv uas tsim los ntawm kev ua haujlwm txias thiab txhim kho cov yeeb nkab steel microstructure thiab cov khoom siv kho tshuab. Txhim kho nws toughness thiab qaug zog kuj.
A192 Seamless Steel Yeeb Nkab Kev Tshuaj Xyuas Zoo
Flattening Test: Ob lub kav dej raug xaiv los ntawm txhua pawg. Ib qho piv txwv yog muab los ntawm txhua qhov kawg ntawm txhua lub yeeb nkab rau kev sim ua kom pom tseeb ntawm cov yeeb nkab lub peev xwm deformation thiab tsis ua hauj lwm rau qhov tsis ua hauj lwm nyob rau hauv axial siab, kom ntseeg tau tias cov yeeb nkab muaj peev xwm tiv taus cov kev ntxhov siab sab nraud hauv kev siv tiag tiag.
Flanging Test: Ib yam li ntawd, ob lub kav dej raug xaiv los ntawm txhua pawg. Ib qho piv txwv yog muab los ntawm txhua qhov kawg ntawm txhua cov yeeb nkab rau qhov kev sim flaring los ntsuas cov yeeb nkab kev ua tau zoo thaum lub sij hawm radial nthuav dav, tiv thaiv cov kab nrib pleb lossis tawg los ntawm kev ua haujlwm flaring thaum lub sij hawm teeb tsa lossis siv.
Kev Ntsuas Hydrostatic: Txhua lub yeeb nkab yuav tsum tau kuaj xyuas hydrostatic los kuaj xyuas nws cov kev sib khi thiab kev ua haujlwm siab, kom ntseeg tau tias cov yeeb nkab yuav tsis xau thaum raug cov kua dej sab hauv, lav qhov kev ua haujlwm ntawm cov khoom siv siab - siab. Xwb, tsis yog -kev kuaj kev puas tsuaj tuaj yeem siv los ntawm kev sim hydrostatic, nyob ntawm tus neeg yuav khoom yuav tsum tau ua.
A192 Carbon steel yeeb nkab Daim Ntawv Thov Cheeb Tsam
Feem ntau siv nyob rau hauv siab - cov cuab yeej siv siab xws li siab - siab boilers thiab superheaters thauj cov siab - kub, siab - siab chav lossis dej kub. Nws ua lub luag haujlwm tseem ceeb hauv siab - siab zog tshuab hauv kev lag luam xws li fais fab thiab petrochemicals, thiab yog ib qho ntawm cov khoom tseem ceeb uas ua kom muaj zog hloov pauv thiab kev sib kis tau zoo hauv cov kev lag luam cov txheej txheem tsim khoom.