A302 Qib D puas tuaj yeem ua tau txias-?

A302 Qib Dyog ib qho qis- alloy steel phaj feem ntau yog tsim los ntawm cov pa roj carbon thiab manganese, nrog cov ntsiab lus alloying. Nws belongs rau ASTM A302 tus qauv, cais raws li lub siab lub nkoj steel, tsim rau siab -kub thiab siab- kev siv cov kabmob.

A302 Qib D Siab Vessel Steel Phaj Chemical Composition:

A302 Qib D Siab Vessel Zoo Hlau Mechanical Properties:

Cov ntawv thov tseem ceeb

Kev lag luam Petrochemical: Siv dav hauv kev tsim cov khoom tseem ceeb xws li reactors, tshav kub exchangers, separators, spherical cia tanks thiab liquefied gas cylinders. Nws yog haum rau siab - kub, siab - siab thiab hydrogen kev pab cuam tej yam kev mob, thiab muaj peev xwm tiv taus corrosive xov xwm nyob rau hauv roj av refining thiab tshuaj synthesis.

Lub Zog Zog Field: Muaj feem xyuam rau cov khoom tseem ceeb xws li boiler nruas, superheaters thiab reheaters ntawm fais fab chaw nres tsheb. Nws kuj tseem tuaj yeem siv rau siab - cov kav dej siab thiab turbine volutes ntawm cov chaw nres tsheb hydropower, ua tau raws li cov kev xav tau ntawm siab - qhov kub thiab txias ntawm chav sib kis thiab cov kabmob siab hauv kev tsim hluav taws xob.

Nuclear Energy Field: Nws tuaj yeem siv rau cov txheej txheem tseem ceeb xws li cov tshuab hluav taws xob nuclear. Nrog zoo heev toughness thiab lub zog, nws ua kom muaj kev nyab xeeb thiab ruaj khov thaum lub sij hawm muaj kev cuam tshuam nuclear.

Lwm yam teb: Siv nyob rau hauv siab-cov khoom siv bearing xws li cov roj av liquefied roj av lub tog raj kheej thiab hydrogenation reactors, hloov mus rau qhov chaw ua haujlwm nyuaj xws li qhov kub thiab txias.

Cov Cai Thov

Txheem thiab cov khoom siv: Yuav tsum ua raws li ASTM A302 / ASME SA-302M tus qauv. Nws yog manganese-molybdenum-nickel alloy steel phaj nrog lub zog tensile ntawm 550-690MPa, lub zog tawm los ntawm Ntau dua lossis sib npaug rau 345MPa, thiab elongation ntawm Ntau dua lossis sib npaug li 20% (gauge ntev 50mm).

Kev khiav hauj lwm qhov kub thiab txias: Qhov ntsuas kub siv tau yog -60℃txog 410 degree, uas tuaj yeem tiv taus qis- qhov kub thiab txias (tsim nyob rau hauv kev ntsuam xyuas cuam tshuam ntawm -20℃/-40℃/-60 degree) thiab nruab nrab-siab kub mechanical loads.

Kev Ua Haujlwm thiab Kev Tshawb Nrhiav Tsis Zoo: Yuav tsum tau kho cua sov xws li normalizing + tempering; steel daim hlau nrog thickness ＞ 25mm xav tau normalizing kev kho mob. Nws yuav tsum dhau A578 tus qauv kuaj pom qhov tsis haum (Qib A / B / C), thiab UT qhov kev kuaj pom qhov tsis zoo thiab thib peb -kev kuaj xyuas tog (xws li SGS) yog xav tau thaum tsim nyog.

Medium Compatibility Cov xwm txheej: Muaj peev xwm tiv taus hydrogen corrosion, siab -kub chav thiab qee yam tshuaj lom neeg, tab sis tsis haum rau kev ua haujlwm muaj zog (xws li cov kua qaub, concentrated alkali) ua haujlwm.

Txheej Txheem Txheej Txheem ntawm A302 Qib D

Yuav tsum tau kho cua sov yam ntxwv:

Cov txheej txheem kev kho cua sov ntawm A302 Qib D yog tus qauv nruj, nrog rau normalizing thiab tempering raws li cov kauj ruam tseem ceeb. Normalizing yog ua nyob rau ntawm 890-950℃nrog txaus tuav lub sij hawm los xyuas kom meej ib tug zoo austenitization, thaum tempering ntawm 590-650℃tam sim ntawd tom qab normalizing zoo tshem tawm kev ntxhov siab nyob rau hauv, txhim kho toughness thiab ductility, thiab tsis txhob brittleness, nteg lub hauv paus ruaj khov rau kev ua haujlwm tom ntej.

Tswj tau txiav thiab tsim nta:

Nws txhawb ntau txoj kev txiav xws li plasma txiav thiab nplaim taws. Nplaim txiav yuav tsum tau preheating rau 80-150℃los tiv thaiv cov kab nrib pleb. Kev tsim ua haujlwm (khoov, dov) yog tsim rau chav tsev kub lossis qis preheating, nrog kev tswj nruj ntawm qhov tsawg kawg nkaus dabtsi yog khoov vojvoog kom tsis txhob muaj cov khoom puas, ua kom ruaj khov zoo.

Weldability nrog nruj Pre/post Controls:

Nws muaj qhov zoo weldability tab sis yuav tsum tau tswj cov txheej txheem nruj. Tsawg-hydrogen electrodes tau txais yuav, thiab preheating rau 100-150℃ua ntej vuam yog qhov yuav tsum tau ua. Tom qab-weld tempering ntawm 580-620℃tshem tawm cov kev ntxhov siab vuam, tiv thaiv cov kab nrib pleb thiab brittleness, thiab ua kom cov kev ua tau zoo sib xws ntawm cov hlau hauv paus.

Rigorous Post-kev ua haujlwm thiab kev tshuaj xyuas:

Post{0}}kev ua haujlwm yog tsom rau kev ntxuav saum npoo thiab kuaj xyuas qhov tsis raug. Vuam spatter thiab burrs raug tshem tawm kom huv si, thiab tsis yog -kev kuaj kev puas tsuaj (UT, MT) yog ua rau ntawm qhov tseem ceeb. Tag nrho cov txheej txheem ua raws li A578 cov qauv kuaj pom qhov tsis txaus, ua kom tsis muaj qhov tsis xws luag sab hauv lossis sab hauv thiab ua tau raws li cov kev xav tau ntawm kev lag luam.

Hu rau tam sim no

Tau txais cov nqe lus hais txog A302 Qib D, Hu rau GNEE Steel.

A302 Qib D puas tuaj yeem ua tau txias-? Yuav tsum tau ceev faj dab tsi?

Nws tuaj yeem ua tau txias- tsim, tab sis nrog kev ceev faj: tsis txhob deformation ntau dhau los tiv thaiv cov kab nrib pleb, ua qhov nruab nrab annealing yog tias xav tau los kho cov ductility, thiab kuaj xyuas qhov tsis xws luag tom qab tsim kom muaj kev ncaj ncees ntawm cov qauv.

Yuav ua li cas khaws A302 Qib D daim hlau kom tiv thaiv kev puas tsuaj?

Khaws rau hauv qhov chaw qhuav, zoo- qhov chaw tso cua, tsis txhob los nag thiab ya raws, tso daim hlau rau ntawm cov ntoo pallets kom tiv thaiv kev sib cuag nrog hauv av, thiab siv cov roj los tiv thaiv - xeb rau saum npoo rau ntev - lub sij hawm cia kom tiv thaiv oxidation thiab xeb.

Dab tsi yog qhov yuav tsum tau elongation ntawm A302 Qib D?

Qhov tsawg kawg nkaus elongation (hauv 200 mm) yog 22%. Qhov siab elongation no qhia tau hais tias zoo ductility, tso cai rau cov hlau mus rau cov yas deformation yam tsis muaj kev puas tsuaj nyob rau hauv load, txhim khu kev ntseeg ntawm cov khoom.

Cov kev kho saum npoo dab tsi muaj feem xyuam rau A302 Qib D?

Cov kev kho saum npoo siv tau suav nrog kev tua blasting (kom tshem tawm xeb thiab nplai), pleev xim (epoxy lossis polyurethane txheej), thiab galvanizing (rau kev txhim kho corrosion nyob rau sab nraum zoov lossis qhov chaw ntub dej), ncua kev pab cuam lub neej.

Cov ntawv pov thawj zoo dab tsi feem ntau yog muab nrog A302 Qib D cov khoom?

Cov ntawv pov thawj zoo muaj xws li ASTM cov ntaub ntawv pov thawj (MTC), cov ntaub ntawv tshuaj muaj pes tsawg leeg, daim ntawv qhia txog cov cuab yeej cuab tam, tsis yog - daim ntawv ntsuam xyuas kev puas tsuaj, thiab cov ntaub ntawv kho cua sov, kom ua raws li cov qauv.

Dab tsi yog machinability ntawm A302 Qib D?

Nws muaj kev ua haujlwm zoo thaum tshav kub kub- kho. Siv cov cuab yeej siab -ceev steel los yog carbide, txais yuav cov kev txiav kom tsim nyog (ceev, pub tus nqi), thiab siv cov kua txiav los txo qhov hnav thiab txhim kho qhov chaw tiav ntawm cov khoom siv machined.

Dab tsi yuav tsum tau zam thaum lub sij hawm tsim khoom ntawm A302 Qib D?

Cov teeb meem tseem ceeb kom tsis txhob muaj xws li porosity, suav nrog, tawg (kub lossis txias), thiab tsis sib xws. Kev tswj nruj nruj ntawm kev sib tsoo, dov, thiab cov txheej txheem kho cua sov, nrog rau kev ua kom zoo tsis zoo -kev sim ua kom puas tsuaj, ua kom muaj kev puas tsuaj - khoom dawb.

Qhov txawv ntawm A302 Qib D thiab A516 Qib 70 yog dab tsi?

A302 Qib D yog qis- alloy steel nrog kub dua / siab tsis kam, thaum A516 Qib 70 yog carbon steel. Qib D muaj kev nkag siab zoo dua ntawm qhov kub thiab txias, haum rau cov kev pabcuam hnyav dua.

A302 Qib D puas tuaj yeem siv rau hauv petrochemical reactors?

Yog, nws yog tsim rau petrochemical reactors. Nws tuaj yeem tiv taus qhov kub thiab txias, kub siab, thiab corrosion ntawm cov organic media hauv reactors, ua kom ruaj khov thiab ua haujlwm ntev ntawm cov khoom siv petrochemical.

Dab tsi yog qhov nyuaj ntawm A302 Qib D tom qab kev kho cua sov?

Tom qab normalizing thiab tempering, nws Brinell hardness (HB) ranges ntawm 137 mus rau 187. Qhov hardness tshuav nyiaj li cas ua kom zoo machinability thiab hnav tsis kam, haum rau kev ua haujlwm tom ntej thiab ntev - kev pabcuam.