Q500EthiabQ550E yog ob qho tib si sawv cev -40℃qis-kub resistant low-alloy high-strength steels, uas yog dav siv nyob rau hauv infrastructure thiab cov khoom siv manufacturing teb. Qhov sib txawv ntawm 50MPa nyob rau hauv lub zog tawm los tsis tsuas yog qhov txawv ntawm lawv qhov kev ua tau zoo ciam teb, tab sis kuj ua rau lawv tsim qhov sib txawv hauv cov txheej txheem kev ua kom zoo tshaj plaws, kev nthuav dav ntawm daim ntawv thov thiab cov kev tswj xyuas zoo. Cov hauv qab no yog ib qho kev tshuaj xyuas los ntawm kev ua tau zoo dua thiab cov ncauj lus kom ntxaws, tsom rau cov ntsiab lus uas muaj feem cuam tshuam nrog kev tsim khoom thiab kev siv qhov project.
Txheej txheem Innovation: Precision tswj ntawm kev tsim thiab txias, sib txawv Optimization cov lus qhia
Ob lub steels cia siab rau cov txheej txheem siab heev xws li TMCP (thermo- cov txheej txheem tswj kev siv tshuab), tab sis Q500E tsom rau kev ntsuas cov txheej txheem yooj yim thiab cov khoom ruaj khov, thaum Q550E nrhiav kev sib txuam heev ntawm cov txheej txheem thiab ultra- siab zog, thiab muaj qhov sib txawv ntawm cov txheej txheem tseem ceeb.
- Q500E: Tus nqi- cov txheej txheem ua tau zoo kom sib npaug ntawm kev ua tau zoo thiab kev ua haujlwm hauv kev tsim cov kav dej seamless, Q500E txais cov txheej txheem "nruam nruam casting → nplhaib rauv cua sov → tho → nruam dov → sizing" txheej txheem. Lub billet yog rhuab mus rau 1250 ± 10℃nyob rau hauv ib tug taug kev - beam rauv kom ua tiav homogenization ntawm austenite. Qhov kawg dov kub yog tswj ntawm 850 - 880℃, thiab ACC (ua kom txias txias) tshuab yog siv los tswj qhov cua txias ntawm 5 - 8℃/s. Qhov kev ua kom txias me me no tuaj yeem zam kev ntxhov siab sab hauv los ntawm kev ua kom txias sai thaum ua kom lub zog. Thaum tsim seamless cov hlab ntsha, tom qab txias dabtsi yog khoov txoj kev, tsuas yog kev kho yooj yim annealing yog xav tau los daws qhov teeb meem ntawm kaum kev ntxhov siab concentration. Hauv kev vuam, nws cov pa sib npaug yog tswj tau qis dua 0.42, qhov kub ua ntej yog 150 - 200 degree, thiab cov pa roj carbon monoxide zoo tib yam tuaj yeem ua tau raws li qhov yuav tsum tau ua. Lub vuam sib koom ua ke muaj zog tuaj yeem ncav cuag ntau dua 95% ntawm lub hauv paus hlau, uas ua rau txo qis kev tsim kho ntawm qhov project site.
- Q550E: High- cov txheej txheem precision kom muaj zog stabilityThe zus tau tej cov Q550E seamless square raj pib nrog cua sov lub nruam casting billet mus txog 1200℃, thiab siv tsis siv neeg tswj tshuab los saib xyuas cov txheej txheem dov thoob plaws hauv cov txheej txheem. Nws txoj kab uas hla sab nraud tuaj yeem tswj tau nyob rau hauv ± 0.5 hli, thiab phab ntsa thickness kam rau ua nyob rau hauv ± 10%, uas yog nruj dua Q500E. Hauv kev tsim cov kav dej ncaj nraim welded, nws yuav xaiv cov txheej txheem vuam sib txawv raws li cov phab ntsa tuab: siab- zaus vuam yog siv rau nyias- cov yeeb nkab phab ntsa kom txo cov cua sov- thaj tsam cuam tshuam; submerged arc welding yog siv rau tuab- cov kav dej uas muaj phab ntsa kom ntseeg tau tias muaj zog vuam. Tom qab vuam, nws yuav tsum dhau los ntawm normalizing lossis quenching thiab tempering kev kho cua sov kom tshem tawm cov kev ntxhov siab sab hauv, uas yog qhov tseem ceeb txuas rau Q550E tab sis tuaj yeem raug tshem tawm rau tsis yog{14}} cov khoom tseem ceeb ntawm Q500E. Tsis tas li ntawd, thaum nws tau tsim rau hauv cov khoom tshwj xeeb- zoo li cov khoom siv xws li crane booms, lub zog deformation thiab lub kaum sab xis yuav tsum raug tswj xyuas kom meej los tiv thaiv kev ua haujlwm tsis zoo los ntawm cov qauv tsis sib xws.
Kev nthuav dav ntawm daim ntawv thov: Los ntawm cov ntsiab lus tseem ceeb mus rau siab -Stress Core Structures
Nrog rau kev nce qib ntawm cov txheej txheem tshiab, ob lub steels tau nthuav dav lawv daim ntawv thov ciam teb, tab sis Q500E yeej nrog tus nqi- ua tau zoo hauv cov haujlwm loj -, thiab Q550E dhau los ua cov khoom tseem ceeb hauv siab - cov xwm txheej ntxhov siab. Muaj kev faib tawm ntawm kev ua haujlwm hauv lawv daim ntawv thov.
- Q500E: Cov pob txha loj ntawm - cov haujlwm loj nrog cov nqi siab Q500E tau dhau los ua cov khoom siv hauv ntau qhov loj - cov haujlwm loj vim nws qhov kev ua tau zoo thiab cov nqi tsim kho tsawg. Hauv kev tsim choj, nws yog siv los ua tus pej thuam tseem ceeb ntawm kev hla - hiav txwv txuas hniav. Ib qho kev hla- hiav txwv choj project siv Q500E seamless steel kav, uas txo cov steel noj los ntawm 30% thiab txhim kho cov seismic kev ua tau zoo. Hauv kev siv cov khoom siv mining, nws yog siv los tsim cov kev txhawb nqa hydraulic thiab scraper conveyors. Nws zoo toughness tuaj yeem tiv taus qhov cuam tshuam ntawm cov pob zeb ntog thiab kev co thaum ua haujlwm. Nyob rau hauv lub zog teb, nws yog siv rau cov yeeb nkab fittings ntawm av cua zog yees. Nrog tiv thaiv- txheej txheej corrosion, nws tuaj yeem ua tau raws li 30- xyoo kev pabcuam lub neej yam tsis muaj kev saib xyuas tsis tu ncua. Tam sim no, nws cov nqi hauv cheeb tsam hauv kev lag luam hauv tsev tau mus txog ntau dua 80%, thiab nws tau maj mam hloov cov khoom lag luam hauv qee qhov chaw muaj zog.
- Q550E: Cov khoom siv tseem ceeb rau siab -kev ntxhov siab thiab lub teeb yuag Q550E yog qhov nyiam nyob rau hauv cov xwm txheej uas yuav tsum tau txo qhov hnyav thiab siab load-cov kabmob muaj peev xwm. Hauv kev tsim kho, nws yog siv rau cov qauv steel ncej ntawm super siab-nce vaj tse. Tom qab tau txais kev pom zoo nyob rau hauv ib qho super siab - nce chaw ua haujlwm hauv qhov project, tag nrho cov qauv hnyav tau txo los ntawm 15%, thiab kev ua haujlwm seismic tau txhim kho los ntawm 20%. Nyob rau hauv engineering machinery, nws yog cov khoom tseem ceeb rau boom ntawm loj -tonnage cranes thiab txav caj npab ntawm excavators. Nws lub zog siab tuaj yeem ua kom ntseeg tau tias cov cuab yeej tsis deform thaum nqa cov khoom hnyav. Hauv thaj chaw ntawm cov cuab yeej siv hluav taws xob, nws yog siv los tsim cov khoom loj- qhov loj cua lub zog ntauwd raj thiab roj laum kav. Qhov loj -size Q550E seamless square raj nrog sab ntev Ntau dua los yog sib npaug li 300mm txawm nyob rau hauv cov khoom tsis txaus vim yog kev loj hlob sai ntawm cov cua fais fab kev lag luam. Tsis tas li ntawd, nws kuj tseem siv rau hauv cov qauv chassis ntawm cov tsheb ciav hlau thauj mus los, uas tuaj yeem txo lub tsheb hnyav thaum txhim kho kev nyab xeeb ntawm kev ua haujlwm.
Kev Tswj Xyuas Zoo: Sib txawv tsom rau kev soj ntsuam cov qauv thiab kev tiv thaiv tsis zoo
Cov kev tswj xyuas zoo ntawm ob lub steels yog tsim raws li lawv tus kheej kev ua tau zoo yam ntxwv thiab daim ntawv thov scenarios. Q500E tsom rau kev tswj cov khoom sib xws, thaum Q550E them nyiaj ntau dua rau kev tshawb pom ntawm micro- tsis xws luag thiab kev ruaj ntseg ntawm cov ntsuas tseem ceeb.
- Q550E: nruj me ntsis tiv thaiv micro- qhov tsis xws luag thiab siab - kev ntsuam xyuas qhov tseeb Txij li Q550E feem ntau yog siv rau hauv cov ntsiab lus kev ntxhov siab- cov khoom siv bearing, txawm tias me me tsis xws luag yuav ua rau muaj kev nyab xeeb. Yog li ntawd, nws cov kev soj ntsuam zoo npog tag nrho cov txheej txheem ntau lawm. Nyob rau hauv lub smelting theem, nws siv spectral tsom xam cov ntsiab lus ntawm alloy ntsiab nyob rau hauv lub sij hawm, thiab qhov yuam kev ntawm txhua lub ntsiab lus yog tswj nyob rau hauv ± 0.01%. Tom qab tsim, ultrasonic flaw detection yog nqa tawm nyob rau hauv tag nrho ntev ntawm seamless yeeb nkab, thiab lub rhiab heev nrhiav tau yuav txheeb xyuas cov kab nrib pleb me me nrog ib txoj kab uas hla ntawm ntau tshaj 0.1 hli. Rau qhov cuam tshuam toughness ntawm -40 degree, txhua batch ntawm cov khoom yuav tsum tau kuaj thiab kuaj, thiab cov khoom tsis tsim nyog yuav tsis tso cai tawm hauv lub hoobkas. Noj cov khoom ntawm cov hlau zeb loj ua piv txwv, qhov cuam tshuam toughness ntawm Q550E yuav tsum tsis pub tsawg tshaj 34J, uas yog siab tshaj qhov tsawg kawg nkaus tus qauv ntawm kev lag luam.
- Q500E: Hais txog batch sib xws thiab txheej txheem traceabilityQ500E yog dav siv nyob rau hauv loj -scale tej yaam num, thiab qhov sib xws ntawm batch kev ua tau zoo yog tus yuam sij rau kev tswj kom zoo. Ua steel mills yuav tsim ib tug tag nrho - txheej txheem traceability system rau nws, uas muaj peev xwm taug qab cov cua kub kub, dov tsis thiab txias npaum li cas ntawm txhua batch ntawm cov khoom. Nyob rau hauv cov nqe lus ntawm kev soj ntsuam qhov ntev, cov neeg kho tshuab kev hloov pauv ntau yam ntawm Q500E ua los ntawm cov txheej txheem TMCP siab heev yog tswj nyob rau hauv ± 20MPa. Rau qhov tsis xws luag, qhov tsis xws luag qhov tob ntawm cov khoom tiav yuav tsum tsawg dua 5% ntawm phab ntsa thickness. Tsis tas li ntawd, rau cov khoom siv nyob rau hauv marine ib puag ncig, yuav tsum tau ntxiv ntsev tsuag tshuaj tiv thaiv corrosion los xyuas kom meej tias tus nqi corrosion ua tau raws li cov kev xav tau ntawm kev siv sij hawm ntev - nyob rau hauv marine ib puag ncig.
Kev Ua Lag Luam thiab Tus Nqi: Cov khoom siv thiab kev xav tau thiab cov nqi sib txawv
Qhov sib txawv ntawm cov txheej txheem thiab daim ntawv thov txiav txim siab qhov sib txawv ntawm cov khoom lag luam thiab cov qauv xav tau thiab cov nqi sib xyaw ntawm ob lub steels, thiab lawv cov nqi sib txawv thiab kev lag luam loj hlob tuaj kuj qhia tau tias cov yam ntxwv zoo.
| Qhov taw qhia | Q500E | Q550E |
|---|---|---|
| Tus nqi lag luam | 6500 - 8500 yuan/ton | 5500 - 6500 yuan/ton |
| Cov neeg muab khoom tseem ceeb | Ntau qhov nruab nrab thiab loj steel mills, nrog kev sib tw ua lag luam siab thiab qib siab ntawm kev ua lag luam | Feem ntau cov hlau loj xws li Baowu Group thiab Angang Steel, nrog rau cov khoom tsim tawm txhua xyoo txog 500,000 tons. |
| Tus nqi tsim nyog | Tus nqi ntawm cov ntsiab lus alloy yog tsawg, thiab tus nqi tseem ceeb los ntawm kev siv lub zog ntawm cov txheej txheem dov; tus nqi yuav raug txo los ntawm optimizing cov txheej txheem txias | Tus nqi ntawm micro- alloy cov ntsiab lus xws li titanium thiab molybdenum yog siab, thiab cov txheej txheem kho cua sov ntxiv ua rau cov nqi siv hluav taws xob ntau ntxiv. |
| Kev lag luam loj hlob | Kev loj hlob txhua xyoo yog kwv yees li 15%, thiab qhov kev thov loj hlob ruaj khov | Tsav los ntawm cov txheej txheem tshiab thiab cov tsev ua ntej, qhov kev loj hlob txhua xyoo yuav tsum yog 8 - 10% hauv peb xyoos tom ntej |
Kev Tsim Kho thiab Kev Kho Kom Zoo: Qhov sib txawv hauv kev ua haujlwm nyuaj thiab kev pabcuam lub neej
Hauv kev tsim kho qhov project tiag tiag thiab kev saib xyuas tom qab, ob lub steels kuj muaj qhov sib txawv vim lawv cov yam ntxwv ntawm kev ua tau zoo, uas cuam tshuam ncaj qha rau qhov kev ua tiav ntawm qhov project thiab ntev - cov nqi khiav lag luam.
- Q500E: Kev tsim kho yooj yim thiab kev saib xyuas tsis tshua muaj nqi Nws cov txheej txheem vuam yog yooj yim, thiab tsis tas yuav muaj kev kho cua sov tom qab vuam rau cov khoom siv dav dav. Ntawm qhov chaw tsim kho ntawm cov phiaj xwm choj, pab pawg tsim kho zoo tib yam tuaj yeem ua haujlwm tom qab kev cob qhia yooj yim. Nyob rau hauv cov nqe lus ntawm kev saib xyuas, vim nws zoo corrosion kuj, tsis tu ncua los tiv thaiv - xeb xim tuaj yeem txuas lub neej kev pab mus rau ntau tshaj 30 xyoo. Txawm hais tias hnav hauv zos tshwm sim, cov khoom siv vuam zoo tib yam tuaj yeem siv los kho, thiab tus nqi tu tsuas yog kwv yees li 30% ntawm cov qib siab - steel.
- Q550E: Cov kev tsim kho siab thiab kev pab lub neej ntev ntawm cov khoom tseem ceeb Thaum lub sij hawm vuam, qis -hydrogen electrodes yuav tsum tau siv, thiab lub interlayer kub yuav tsum tau tswj ntawm 120 - 150℃. Yog tias qhov kub thiab txias dhau lawm, lub zog ntawm tshav kub - thaj tsam cuam tshuam yuav txo qis. Thaum txiav, plasma lossis laser txiav yog pom zoo kom tsis txhob muaj cov khoom siv degradation los ntawm nplaim taws. Txawm li cas los xij, nws qhov txiaj ntsig yog nyob rau hauv nws lub neej ua haujlwm ntev. Nyob rau hauv cov khoom tseem ceeb ntawm engineering machinery, lub neej kev pab cuam ntawm Q550E qhov chaw yog 20 - 30% ntev dua li ntawm Q500E nyob rau hauv tib yam kev ua haujlwm. Txawm hais tias tus nqi pib tsim yog siab, nws tuaj yeem txo qhov zaus ntawm cov khoom hloov pauv thiab txuag tau ntev - cov nqi tu lub sijhawm.
Thaum tsim ib qho nruab nrab -span choj, yuav ua li cas xaiv ntawm Q500E thiab Q550E?
Nws nyob ntawm tus qauv tsim ntawm tus choj. Yog tias nws yog qhov nruab nrab zoo tib yam -span choj nrog cov peev txheej nruj, Q500E yog qhov zoo dua. Nws tuaj yeem ua tau raws li qhov yuav tsum tau muaj thiab txo tus nqi ntawm cov khoom siv steel thiab kev tsim kho. Yog tias tus choj nyob hauv thaj chaw alpine uas muaj av qeeg ntau zaus, thiab yuav tsum tau txo qhov hnyav ntawm cov qauv txhawm rau txhim kho kev ua haujlwm seismic, Q550E yog qhov tsim nyog dua. Nws lub zog siab dua thiab qis dua -kub toughness tuaj yeem tiv nrog hnyav ib puag ncig.
Vim li cas tus nqi lag luam ntawm Q500E siab dua li ntawm Q550E hauv qee lub sijhawm?
Qhov no muaj feem xyuam nrog kev ua lag luam thiab kev xav tau thiab cov nqi tsim khoom. Q500E muaj ntau yam kev siv thiab kev lag luam loj. Thaum qhov kev thov rau kev tsim kho vaj tse tawg, cov khoom siv nruj, thiab tus nqi yuav nce. Hais txog kev tsim khoom, qee cov khoom lag luam Q500E txais cov txheej txheem kos duab txias los txhim kho qhov zoo ntawm qhov chaw thiab qhov tseeb qhov tseeb, uas ua rau cov nqi ntau lawm. Q550E feem ntau yog muab los ntawm cov hlau loj loj, nrog cov peev txheej ruaj khov. Thaum tus nqi ntawm nws cov ntsiab lus tseem ceeb xws li molybdenum poob, tus nqi yuav nyob qis, ua rau tus nqi hloov pauv ib ntus.
Ib qho twg muaj qhov zoo dua hauv kev ua haujlwm ntawm cov cua fais fab, Q500E lossis Q550E?
Av cua zog yees yog tsim nyog rau Q500E. Nws cov nqi kev ua tau zoo yog siab, thiab nws tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm av cua fais fab kev lag luam. Rau offshore cua zog yees, Q550E yog qhov zoo dua. Sab ntug dej hiav txwv ib puag ncig muaj kev xav tau siab rau lub zog thiab kev tiv thaiv corrosion ntawm ntauwd. Q550E tuaj yeem txo qhov tuab ntawm cov pej thuam thaum ua kom lub zog, txo qhov nyuaj ntawm kev teeb tsa sab nrauv. Nyob rau tib lub sijhawm, nws qhov kev ua haujlwm ruaj khov tuaj yeem tiv taus qhov cuam tshuam ntawm hiav txwv cua thiab nthwv dej.