JISSPV355JIS G3115 yog tus qauv kev lag luam uas tau tsim los ntawm Nyiv Cov Txheej Txheem Txheej Txheem Txheej Txheem (JISC) uas qhia txog cov kev cai yooj yim rau qis- thiab nruab nrab- nro carbon steel daim hlau rau cov hlab ntsha siab nrog lub thickness ntau dua lossis sib npaug li 3.2 hli. Tsim los tswj cov hlab ntim siab ntawm ntau qhov ntau thiab tsawg, tus qauv qhia txog kev ua tau zoo thiab kev ua haujlwm hauv qhov tseem ceeb xws li lub zog, elongation, weldability, thiab corrosion kuj. Nws muaj feem xyuam rau txhua hom welded qauv uas raug tshav kub, siab, thiab ib puag ncig. Ntau hom phaj muab los ntawm tus qauv no suav nrog cov uas muaj qhov qis - tensile lub zog txog li 270MPa, cov nruab nrab - tensile zog txog li 510MPa, thiab cov uas muaj siab - tensile zog txog li 760MPa.
Raws li kev paubJIS SPV355 JIS G3115 tus neeg muag khoom, peb tsis tuaj yeem muab cov neeg siv khoom kom muaj nuj nqis lav JIS G3115 siab- cov khoom zoo, tab sis kuj muab cov nqi zoo thiab nruab nrog kev pabcuam tom qab muag tiav. Tsis tas li ntawd, kuj tseem muaj cov kev pabcuam ntxiv, xws li cov ntaub ntawv qhia rau cov neeg siv khoom, suav nrog JIS SPV355 JIS G3115 tshuaj muaj pes tsawg leeg, SPV355 zog, SPV355 ntom, SPV355 lub zog, SPV355 sib npaug, thiab lwm yam.
Lub Cev Yam Tseem Ceeb
Qhov ntom: Zoo ib yam li lwm cov pa roj carbon steel, nws muaj tus qauv ntom ntom uas ua kom yooj yim rau kev xam qhov hnyav rau qhov loj - nplai tsim.
Thermal conductivity: Nws muab kev hloov pauv kom zoo, uas yog qhov tseem ceeb rau nws siv hauv cov khoom siv hluav taws xob thiab cov boilers.
Thermal Expansion: Cov khoom siv yog tsim los kom muaj qhov ntsuas qhov nthuav dav ntawm qhov nruab nrab ntawm qhov kub thiab txias, tiv thaiv cov qauv kev sib hloov thaum lub sij hawm thermal.
Magnetic Properties: Raws li cov hlau ferritic, nws yog ib txwm sib nqus, tso cai rau kev kuaj cov hlau nplaum sib nqus (MT) txhawm rau txheeb xyuas qhov chaw lossis ze rau - qhov tsis xws luag.
Modulus ntawm Elasticity: Nws tuav lub siab nruj, kom ntseeg tau tias cov hlab ntsha siab thiab cov tso tsheb hlau luam khaws cia lawv cov duab nyob rau hauv kev ntxhov siab tseem ceeb.
Ua haujlwm tau: Nws lub cev lub cev tso cai rau qhov txias txias thiab kub sib sau ua ke, ua kom cov khoom siv ntawm cov khoom sib txuas ua ke.
SPV355 nruab nrab kub siab lub nkoj steel tshuaj muaj pes tsawg leeg: (%)
Qib | C | Mn | Si | Al | P | S |
SPV355 | ≤ 0.20 | ≤1.60 | ≤ 0.55 | 0.75 |
≤ 0.030 | ≤ 0.030 |
SPV355 siab hlab ntsha steel txhua yam khoom:
Qib | Tensile zog MPa | Yield zog MPa | elongation |
SPV355 | 520-640 | ≥315 | ≥14 |
Daim ntawv thov
SPV355 yog lub siab - zoo siab lub nkoj steel ua raws li JIS G3115, uas muaj qhov zoo tshaj plaws weldability, toughness, thiab siab tsis kam. Nws cov ntawv thov tseem ceeb yog tsom rau hauv thaj chaw uas xav tau kev nyab xeeb nruj thiab cov qauv kev ua haujlwm, tshwj xeeb hauv qab no:
Kev lag luam Petrochemical: Dav siv los tsim cov cuab yeej tseem ceeb xws li reactors, distillation towers, cia tso tsheb hlau luam, thiab cov cua kub exchangers. Nws tuaj yeem tiv taus siab, kub siab, thiab xeb los ntawm cov tshuaj lom neeg (xws li, roj av, roj av, thiab tshuaj reagents), ua kom muaj kev ruaj ntseg ntawm cov roj refining thiab cov kab ntau lawm.
Lub zog fais fab kev lag luam: Siv nyob rau hauv kev tsim cov boiler nruas, chav headers, thiab siab pipelines rau thermal fais fab nroj tsuag thiab nuclear fais fab auxiliary khoom. Nws hloov mus rau ntev - lub sijhawm ua haujlwm nyob rau hauv siab - qhov kub thiab txias (≤450℃) thiab siab - siab, lav qhov kev nyab xeeb thiab kev ua haujlwm ntawm lub tshuab tsim hluav taws xob.
Metallurgical & Machinery Kev Lag Luam: Siv los tsim cov hlab ntsha siab rau metallurgical smelting (xws li, blast furnace gas storage tanks) thiab hydraulic khoom cylinders. Nws ua tau raws li qhov yuav tsum tau ua ntawm hnyav- thauj khoom thiab kev ua haujlwm sib txawv, nrog rau kev ua haujlwm zoo deformation thiab kev ua haujlwm qaug zog.
Nroog Infrastructure: Ua haujlwm nyob rau hauv kev tsim cov khoom siv roj av, LPG thauj tank, thiab cov dej xa dej thiab cov kav dej siab. Nws ua kom muaj kev nyab xeeb kev thauj mus los thiab khaws cia ntawm lub zog thiab dej hauv kev ua haujlwm hauv nroog.
Cov Cai Thov
Txhawm rau muab kev ua si tag nrho rau SPV355 qhov kev ua tau zoo thiab ua kom muaj kev nyab xeeb ntawm kev ua haujlwm, yuav tsum ua raws li cov cai hauv qab no:
Qhov kub thiab txias: Haum rau kev ua haujlwm kub xws li -20℃txog 450℃. Thaum qhov kub thiab txias qis dua -20 degree, nws yog ib qho tsim nyog yuav tsum tau ua qhov kev ntsuam xyuas toughness kom tsis txhob tawg tawg; Thaum siab tshaj 450 degree, nws lub zog yuav txo qis, yog li nws yuav tsum tsis txhob siv nyob rau hauv lub sij hawm ntev-kub ib puag ncig tshaj qhov txwv.
Kev mob siab: Tsim los rau nruab nrab thiab siab - qhov chaw ua haujlwm siab, nrog rau qhov siab tshaj plaws ua haujlwm siab (MAWP) sib piv nws cov tuab thiab kho cua sov lub xeev. Nws yuav tsum raug kuaj los ntawm kev ntsuas siab (hydrostatic lossis pneumatic test) ua ntej siv kom tsis txhob muaj qhov xau raws li qhov ntsuas siab.
Qhov Nruab Nrab: Resistant mus rau cov uas tsis yog - muaj zog corrosive media xws li roj, roj, dej, thiab chav. Rau cov xov xwm muaj zog corrosive (piv txwv li, acids, alkalis), los tiv thaiv - kho corrosion (txheej, hauv ob sab phlu) los yog txuam nrog corrosion- cov ntaub ntawv resistant yuav tsum tau.
Welding & Installation mob: Vuam cov ntaub ntawv (xws li, E50 series electrodes) txuam SPV355 yuav tsum tau siv, thiab preheating (100{5}}150 degree) thiab tom qab vuam thaum tshav kub kub kho (PWHT) yuav tsum tau ua kom tsis txhob welding tawg. Kev txhim kho yuav tsum ua raws li cov lus qhia tshwj xeeb ntawm lub nkoj kom nruj thiab ruaj khov.
Kev tsim khoom
Kev kho kom zoo: Molten steel undergoesNqus DegassingthiabDesulfurizationkom tshem tawm cov impurities (xws li Sulfur thiab Phosphorus), ua kom lub cev huv si.
Casting: Cov hlau yog tsim rau hauv slabs ntawmNruam Castingkom tswj tau cov tshuaj sib xws.
Rolling: Slabs yog rhuab thiab dhau los ntawm hnyav chais kom ua tau raws li qhov xav tau thickness. Qhov no feem ntau suav nrogThermo-Mechanical Controlled Processing (TMCP)los kho cov qauv nplej.
Kev kho cua sov:
normalizing: Reheating thiab cua-txias kom tshem tawm cov kev ntxhov siab sab hauv thiab txhim kho qhov tawv.
Quenching & Tempering (yeem): Kev txias sai sai ua raws li kev ua kom sov kom ua tiav lub zog siab tshaj plaws thiab ductility.
Kev tshuaj xyuas: Daim phiaj raugKev kuaj ultrasonic (UT)txhawm rau txheeb xyuas qhov tsis txaus ntseeg thiab Kev Ntsuas Mechanical los txheeb xyuas cov txiaj ntsig ntawm lub zog thiab kev cuam tshuam.
Tiv tauj peb ntawm beam@gneesteelgroup.com rau tus nqi, kev txhawb nqa, lossis kev daws teeb meem. Peb yeej ib txwm npaj los txhawb koj qhov project.
Qhov txawv ntawm SPV355 thiab Q345R yog dab tsi?
SPV355 (JIS tus qauv) thiab Q345R (Suav tus qauv GB 713) yog ob qho tib si lub nkoj siab. SPV355 muaj qhov siab tshaj qhov ua tau zoo tshaj plaws (355 MPa vs 345 MPa) thiab cov tshuaj sib txawv me ntsis, ua raws li cov qauv hauv cheeb tsam sib txawv.
SPV355 puas tuaj yeem siv rau cov kua tso kua dej?
Yog lawm, SPV355 yog dav siv rau kev tsim cov kua tso tsheb hlau luam (xws li cov dej tso tsheb hlau luam, cov roj tso tsheb hlau luam, cov roj tso tsheb hlau luam) uas dais qee qhov siab. Nws zoo sealing kev ua tau zoo thiab siab -cov kabmob muaj peev xwm ua kom muaj kev nyab xeeb ntawm cov kua.
Puas yog SPV355 xav tau kev kho saum npoo ua ntej siv?
SPV355 xav tau kev kho deg (xws li derusting, degreasing) ua ntej siv, tshwj xeeb tshaj yog ua ntej vuam lossis tiv thaiv- txheej txheej. Qhov no tshem tawm cov impurities saum npoo, ua kom cov vuam zoo thiab txhim kho cov adhesion ntawm anti-corrosion txheej.
Dab tsi yog qhov kev pab cuam lub neej ntawm SPV355 siab hlab ntsha?
Kev pabcuam lub neej ntawm SPV355 cov hlab ntsha siab feem ntau yog 10-20 xyoo, nyob ntawm kev ua haujlwm (kub, siab, nruab nrab corrosion), qib txij nkawm thiab ua raws li kev ua haujlwm tshwj xeeb. Kev tshuaj xyuas tsis tu ncua tuaj yeem ua rau lub neej ua haujlwm ntev.
SPV355 puas tuaj yeem siv rau hauv hydrogenation reactors?
SPV355 tuaj yeem siv rau hauv qis-siab hydrogenation reactors, tab sis rau siab -siab thiab siab-kub hydrogenation tej yam kev mob, nws yuav tsum tau kho tshwj xeeb (xws li hydrogen embrittlement resistance kev kho mob) los yog hloov nrog ntau haum steel qib.
Dab tsi yog qhov kev xeem cuam tshuam rau SPV355?
SPV355 yuav tsum tau Charpy V- qhov ntsuas qhov cuam tshuam ntawm -20 degree, nrog rau qhov cuam tshuam tsawg kawg ntawm lub zog tsis pub tsawg tshaj 27 J. Qhov kev ntsuas no ntsuas cov hlau tsis tshua muaj qhov kub thiab txias thiab tsis kam ua rau tawg tawg nyob rau hauv kev cuam tshuam.
Cov khoom siv vuam zoo li cas rau SPV355?
Cov khoom siv vuam tsim nyog rau SPV355 suav nrog E50 series electrodes (xws li E5015, E5016) rau phau ntawv arc vuam, thiab ER50-6 vuam hlau rau roj hlau arc vuam (GMAW), kom ntseeg tau tias cov khoom siv sib txuam nrog cov hlau hauv paus.
SPV355 puas tuaj yeem ua tau txias-?
SPV355 tuaj yeem ua rau txias- tsim nyob rau hauv ib qho kev sib txawv, tab sis kev deformation txias heev tuaj yeem ua rau kev ua haujlwm tawv thiab txo qhov tawv. Rau cov duab nyuaj lossis loj deformation, preheating lossis post- kev kho cua sov yog pom zoo.
Dab tsi yog qhov kev ceev faj rau kev thauj khoom SPV355 steel phaj?
Thaum thauj SPV355 steel daim hlau, zam kev sib tsoo thiab khawb kom tiv thaiv qhov chaw puas. Lawv yuav tsum tau teem kom zoo zoo, ruaj khov kom tsis txhob ntog, thiab tiv thaiv los ntawm nag thiab noo noo kom tsis txhob xeb ua ntej siv.
Puas yog SPV355 haum rau cov khoom siv roj thiab roj av?
Yog lawm, SPV355 yog qhov tsim nyog rau qee cov khoom siv roj thiab roj av (xws li onshore cia tso tsheb hlau luam thiab cov kav dej txuas nrog cov chaw sab nrauv) tom qab tiv thaiv - kev kho corrosion, vim nws lub siab zoo - cov kabmob muaj peev xwm.