SWV 490yog lub siab -lub zog siab lub nkoj steel qib tsim los siv rau hauv cov boilers, cov hlab ntsha siab, thiab lwm yam khoom siv uas yuav tsum tiv taus qhov kub thiab txias. Nws belongs rau qeb ntawm quenched thiab tempered steels, uas yog ua tiav kom ua tau zoo -grained microstructure uas muab zoo heev toughness, zoo weldability, thiab txhim khu kev qha lub zog ntawm siab kub. Cov khoom siv yog tsim los tswj nws cov khoom siv hluav taws xob nyob rau hauv ntev - lub sij hawm raug thermal cycling thiab ntau yam corrosive ib puag ncig, ua rau nws tsim nyog rau kev siv hauv petrochemical, tsim hluav taws xob, thiab cov tshuab hnyav. Nws cov tshuaj muaj pes tsawg leeg thiab kev kho cua sov yog ua tib zoo tswj kom ntseeg tau tias siab purity, tsawg impurity theem, thiab sib npaug ntawm lub zog thiab ductility. SPV490 feem ntau yog muab nkag rau hauv qhov kub thiab txias, uas ua rau nws muaj peev xwm tiv taus cov pob txha tawg thiab ua kom muaj kev ruaj ntseg nyob rau hauv kev xav tau kev ua haujlwm.
Chemical Composition thiab Mechanical Property
| Qib | C% | SI% | Mn% | P% | S% |
| SWV 490 | 0.2 | 0.8 | 1.7 | 0.02 | 0.01 |
| Tsawg dua lossis sib npaug li 0.18 | Tsawg dua lossis sib npaug li 0.75 | Tsawg dua lossis sib npaug li 0.16 | Tsawg dua lossis sib npaug li 0.030 | Tsawg dua lossis sib npaug li 0.030 |
| Qib Steel | Yield Strength, rau cov khoom hauv mm, Mpa, min | Tensile zog, Mpa | Elongation, %, min | ||||
| SWV 490 | 6<> | 50<> | 100<> | Tsawg dua los yog sib npaug li 16 | 16<> | >40 | |
| 490 | 470 | 450 | 610-740 | 18 | 25 | 19 | |
Daim ntawv thov
1. Boiler thiab Pressure Vessel Manufacturing
SPV490 yog siv dav hauv kev tsim cov boilers thiab cov hlab ntsha siab, nrog rau cov boilers muaj, fais fab nroj tsuag boilers, thiab siab hlab ntsha rau petrochemical thiab tshuaj industries. Nws yog tsuas yog siv rau cov khoom tseem ceeb xws li boiler drums, header kav, thiab cov hlab ntsha siab uas dais kub thiab siab.
2. Petrochemical thiab Chemical Equipment
Hauv kev lag luam petrochemical, SPV490 yog siv los tsim cov reactors, cov khoom sib cais, cov tso tsheb hlau luam, thiab cov kav dej rau kev ua cov roj av, roj av, thiab tshuaj lom neeg nruab nrab.
3. Cov cuab yeej tsim hluav taws xob
Nws yog ib qho tseem ceeb ntawm cov khoom siv hluav taws xob thermal, cov cuab yeej siv hluav taws xob nuclear, thiab hluav taws xob hluav taws xob txuas ntxiv mus. Cov ntawv thov tshwj xeeb suav nrog cov thee- hluav taws xob boiler cua sov qhov chaw, cov kav dej, thiab cov khoom siv siab ntawm cov roj turbine fais fab.
4. Heavy Machinery thiab Kev Tsim Kho Machinery
SPV490 yog siv rau hauv kev tsim cov siab-cov kabmob cov qauv ntawm cov tshuab hnyav, xws li hydraulic thooj voos kheej kheej, lub tank siab ntawm engineering machinery, thiab thauj khoom-cov kabmob ntawm cov khoom siv mining.
Cov Cai Thov
1. Rau Boiler thiab Pressure Vessel Manufacturing
Nws ua haujlwm hauv ib puag ncig nrog kev ua haujlwm kub ntawm -20℃txog 450℃thiab ua haujlwm siab ntawm 1.6MPa txog 10MPa. Cov khoom siv yuav tsum tiv thaiv thermal cycling qaug zog, corrosion los ntawm nruab nrab xws li chav thiab cov kuab tshuaj organic, thiab tswj cov txheej txheem kev ncaj ncees nyob rau hauv ntev - lub sij hawm ua haujlwm siab. Nws yog haum rau nruab nrab los yog tsis muaj zog corrosive xov xwm thiab yuav tsum tau nruj me ntsis tswj ntawm sulfur thiab phosphorus cov ntsiab lus kom tsis txhob nkig puas.
2. Rau Petrochemical thiab Chemical Equipment
Nws yoog mus rau qhov chaw ua haujlwm hnyav uas muaj qhov kub thiab txias, siab, thiab corrosive media (xws li hydrogen sulfide, naphthenic acid, thiab amine daws). Qhov kub ua haujlwm feem ntau yog nyob nruab nrab ntawm -10℃thiab 400 degree, thiab lub siab tuaj yeem ncav cuag 15MPa. Nws yuav tsum tau zoo heev hydrogen sulfide corrosion kuj (HIC / SCC tsis kam) thiab weldability zoo los xyuas kom meej qhov nruj thiab kev nyab xeeb ntawm cov khoom siv pob qij txha. Nws tsis haum rau muaj zog acid lossis muaj zog alkali ib puag ncig yam tsis muaj kev tiv thaiv corrosion.
3. Rau cov cuab yeej tsim hluav taws xob
Nws ua haujlwm nyob rau hauv siab - qhov kub thiab txias (250℃txog 450 degree) thiab siab siab (6MPa txog 12MPa), yuav tsum tau ua haujlwm zoo heev - kub lub zog, oxidation tsis kam, thiab creep resistance. Nws yuav tsum tiv taus ntau zaus pib- nres lub voj voog ntawm cov khoom siv fais fab yam tsis muaj deformation lossis tawg. Rau cov cuab yeej siv hluav taws xob nuclear, nws kuj yuav tsum tau ua kom tau raws li cov kev cai tiv thaiv hluav taws xob thiab cov qauv tshuaj xyuas nruj.
4. Rau cov tshuab hnyav thiab kev tsim kho tshuab
Nws ua haujlwm hauv kev ua haujlwm nyuaj uas cuam tshuam nrog kev thauj khoom dynamic, kev vibration, thiab qee zaus. Kev ua haujlwm kub yog li ntawm -30℃mus rau 300 degree, thiab nws yuav tsum tau zoo toughness (tshwj xeeb tshaj yog kub-kub toughness) thiab hnav tsis kam. Nws yuav tsum muaj kev ua haujlwm zoo heev los hloov mus rau ntau yam stamping thiab dabtsi yog khoov cov txheej txheem hauv cov txheej txheem tsim khoom, thiab cov welds yuav tsum tiv taus cov kev cuam tshuam dynamic yam tsis ua haujlwm.
Kev khiav dej num ntawm SPV490 Steel Phaj
Raw Material Preparation thiab Charging
Cov txheej txheem pib nrog xaiv cov qib siab - zoo hlau ore, seem hlau, thiab cov hlau alloying xws li manganese, silicon, thiab me me ntxiv ntawm niobium lossis vanadium. Cov ntaub ntawv no tau ua tib zoo muab faib ua raws li cov txheej txheem tshuaj muaj pes tsawg leeg ntawm SPV490 thiab tom qab ntawd them rau hauv lub converter lossis hluav taws xob arc rauv.
Smelting thiab Primary Refining
Hauv qhov cub, cov khoom siv raw yog melted ntawm qhov kub thiab txias. Oxygen yog tshuab rau hauv cov hlau molten kom txo cov ntsiab lus carbon thiab tshem tawm impurities los ntawm oxidation. Thaum lub sij hawm no, cov tshuaj muaj pes tsawg leeg tau soj ntsuam tas li thiab hloov kho kom tau raws li cov qauv teev tseg rau SPV490.
Secondary Refining thiab Vacuum Treatment
Tom qab thawj refining, cov hlau molten yog pauv mus rau lub ladle rauv rau theem nrab refining. Ntawm no, ntxiv deoxidation thiab desulfurization yog nqa tawm, thiab tus nqi ntawm cov ntsiab lus alloying tau ntxiv kom ua tiav qhov xav tau lub zog thiab toughness. Lub tshuab nqus tsev degassing (VD lossis VOD) yog tom qab ntawd siv los txo cov hydrogen, nitrogen, thiab lwm yam pa phem, txhim kho cov hlau purity thiab zoo sab hauv.
Nruam Casting
Lub refined molten steel yog cam khwb cia rau hauv slabs siv lub nruam casting tshuab. Cov slabs yog txias thiab solidified nyob rau hauv kev tswj tej yam kev mob los xyuas kom meej ib tug uniform microstructure thiab txo qhov sib cais. Cov slabs cam khwb cia yog tom qab kuaj xyuas qhov tsis xws luag ua ntej mus rau theem tom ntej.
Cua sov thiab Tswj Rolling
Cov slabs tau rov ua dua rau qhov kub ntawm ib ncig ntawm 1150-1200℃kom paub meej tias ua tiav austenitization. Tom qab ntawd lawv raug rau kev tswj dov, uas muaj ntau qhov kev hla ntawm qhov sib txawv ntawm qhov kub thiab txias. Cov txheej txheem no ua kom zoo dua cov nplej loj, txhim kho cov khoom siv kho tshuab, thiab muab lub zog thiab qhov hnyav rau SPV490.
Quenching thiab Tempering
Tom qab dov, cov hlau phaj yog txias sai heev los ntawm quenching los ua ib qho nyuaj, nplua -grained microstructure. Tom qab ntawd lawv raug tempered ntawm qhov kub nruab nrab los txo cov kev ntxhov siab sab hauv, txhim kho ductility, thiab ua tiav qhov kawg sib npaug ntawm lub zog siab thiab zoo toughness yam ntxwv ntawm SPV490.
Tiav thiab Kev Tshuaj Xyuas
Cov phaj tempered yog straightened, txiav mus rau qhov ntev yuav tsum tau, thiab raug rau ntau yam kev soj ntsuam, nrog rau kev kuaj ultrasonic, tensile xeem, thiab kev ntsuam xyuas. Tsuas yog daim hlau uas ua tau raws li cov txheej txheem nruj nruj tau pom zoo rau kev xa khoom.
Thov ib tug kws tshaj lij hais rau SPV490 los ntawm GNEE Steel.
Qhov txawv ntawm SPV490 thiab SPV410 yog dab tsi?
Qhov sib txawv tseem ceeb nyob rau hauv lub zog: SPV490 muaj zog tensile thiab tawm los ntau dua SPV410. SPV410 yog rau cov qauv hauv hiav txwv dav dav, thaum SPV490 yog siv rau hauv siab -load qhov chaw xws li cov hlab ntsha siab thiab cov ntu tuab tuab.
SPV490 puas tuaj yeem txuas tau yooj yim?
Yog lawm, SPV490 muaj weldability zoo. Nws tuaj yeem welded siv ntau txoj hauv kev (arc welding, gas shielded welding) nrog cov khoom siv vuam tsim nyog thiab tsis muaj. Preheating thiab post-weld heat treatment tej zaum yuav xav tau rau cov phaj tuab.
Cov khoom siv vuam zoo li cas rau SPV490?
Cov khoom siv vuam tsim nyog rau SPV490 suav nrog E50 series electrodes (piv txwv li, E5015) rau phau ntawv arc vuam, thiab ER50-6 vuam hlau rau roj shielded vuam. Cov ntaub ntawv no phim nws lub zog thiab toughness.
Dab tsi yog lub xeev xa khoom ntawm SPV490 steel daim hlau?
SPV490 feem ntau yog xa mus rau hauv lub xeev normalized (N). Qee lub tuam txhab tseem tuaj yeem muab tempered lossis quenched -tempered xeev raws li cov neeg siv khoom xav tau, tab sis normalizing yog tus qauv xa khoom.
Dab tsi yog qhov ceev ntawm SPV490?
Qhov ceev ntawm SPV490 yog tib yam li cov pa roj carbon zoo tib yam, txog 7.85 g / cm³. Tus nqi no yog qhov tseem ceeb rau kev xam qhov hnyav ntawm cov hlau phaj thaum lub nkoj tsim thiab kev tsim kho.
SPV490 puas tuaj yeem siv nyob rau hauv qis -kub marine ib puag ncig?
Yog lawm, SPV490 muaj qhov zoo qis -kub toughness. Nws tuaj yeem tiv taus qhov kub qis mus rau -20℃(nyob ntawm qhov tuab) yam tsis muaj pob txha tawg, ua rau nws tsim nyog rau thaj chaw txias dej hiav txwv zoo li Hiav Txwv North.
Qhov elongation tus nqi ntawm SPV490 yog dab tsi?
Qhov tsawg kawg nkaus elongation tus nqi ntawm SPV490 yog 22% (raws li JIS G 3115). Qhov siab elongation no ua kom cov hlau tuaj yeem deform plastically nyob rau hauv sab nraud quab yuam, tsis txhob cia li kev ua haujlwm tsis zoo.
Yuav khaws SPV490 steel daim hlau li cas?
Khaws SPV490 rau hauv qhov chaw qhuav, zoo - qhov cua nkag rau hauv tsev kom tsis txhob ya raws thiab xeb. Muab cov ntawv tso rau ntawm cov ntoo txhawb nqa kom cais tawm hauv av, thiab npog nrog cov ntaub tsis muaj dej yog tias khaws cia rau sab nraum zoov ntev.
Dab tsi yog qhov hardness ntau ntawm SPV490?
Brinell hardness (HB) ntawm SPV490 feem ntau yog nyob nruab nrab ntawm 137-187. Qhov hardness no sib npaug zog thiab machinability, ua rau nws yooj yim rau txiav, laum thiab zoo li thaum tsim khoom.
Puas yog SPV490 haum rau kev tsim cov hlab ntsha siab?
Yog lawm, SPV490 yog tsim tshwj xeeb rau cov hlab ntsha hauv hiav txwv (piv txwv li, roj tso tsheb hlau luam, lub tank dej). Nws lub zog siab thiab kev ua haujlwm siab ua tau raws li cov kev cai nruj ntawm cov qauv kev nyab xeeb ntawm cov hlab ntsha.