P690QL 1yog lub siab -lub zog quenched thiab tempered structural steel phaj teev nyob rau hauv European tus qauv EN 10025-6. Nws yog feem ntau siv rau hauv daim ntawv thov uas yuav tsum tau muaj zog yield zog ua ke nrog zoo toughness thiab weldability, xws li hnyav machinery, offshore qauv, siab hlab ntsha, thiab loj engineering Cheebtsam.
Executive Standard
P690QL1 yog tswj hwm los ntawm European tus qauvTS EN 10025-6: 2004, uas npog siab -lub zog steels nyob rau hauv quenched thiab tempered tej yam kev mob.
Qib Qib
Lub npe "P690QL1" tuaj yeem txhais raws li hauv qab no:
P- Cov khoom siv kho tshuab siv rau cov phaj
690- Yam tsawg kawg nkaus lub zog ntawm 690 MPa
Q- Quenched thiab tempered (QT)
L1- Impact toughness level (Charpy V-ntiv tes cuam tshuam lub zog Ntau dua lossis sib npaug rau 27 J ntawm -40 degree)
Tshuaj muaj pes tsawg leeg% ntawm steel P690QL1
| Raws li EN 10216-3: 2014: 1.2=< Mn=<1.7; P=<0.025; S=<0.015; Al=<0.02; |
| C | Si | Mn | Ni | P | S | Cr | Mo | V | N | Nb | Ti | Cu | Zr | B |
| max 0.2 hli | max 0.8 hli | max 1.7 Nws | max 2.5 hli | max 0.02 Nws | max 0.008 Nws | max 1.5 hli | max 0.7 hli | max 0.12 | max 0.015 | max 0.06 | max 0.05 Nws | max 0.3 hli | max 0.15 Nws | max 0.005 Nws |
Txhua yam khoom ntawm steel P690QL1
| Nominal thickness (hli): | rau 100 | 100 - 150 |
| Rm- Tensile zog (MPa) (+ QT) | 770-940 | 720-900 |
| Nominal thickness (hli): | rau 50 | 50 - 100 | 100 - 150 |
| ReH- Yam tsawg kawg nkaus tawm lub zog (MPa) (+ QT) | 690 | 670 | 630 |
| Nominal thickness (hli): | rau 20 | 20 - 40 | 40 - 50 | 50 - 65 | 65 - 80 | 80 - 100 |
| Rp0.20.2% pov thawj lub zog (MPa) (+ QT) | 690 | 650 | 615 | 580 | 540 | 500 |
| KV- Impact zog (J) transverse, (+QT) | -40 degree 27 |
-20 degree 31-40 |
0 degree 39-60 |
+20 degree 43 |
| KV- Impact zog (J) longitud., (+QT) | -30 degree 40 |
-20 degree 47 |
-10 degree 53 |
0 degree 60 |
+20 degree 65 |
| A- Min. elongation ntawm pob txha (%) (+ QT) | 14-16 |
txheej txheem yam ntxwv
1. quenching thiab Tempering txheej txheem
P690QL1 steel yog tsim los ntawm tus txheej txheem quenching thiab tempering (Q&T) txheej txheem, uas muaj cua sov rau lub austenitization kub, ceev ceev txias nyob rau hauv dej los yog roj, thiab tom qab tempering ntawm ib tug tswj kub.
Cov txheej txheem no ua kom lub siab -lub zog, zoo-grained microstructure nrog zoo toughness thiab ductility.
2. Chemical Composition Control
Cov hlau yog smelted nrog kev tswj nruj ntawm cov tshuaj muaj pes tsawg leeg, suav nrog cov ntsiab lus carbon tsawg thiab cov txiaj ntsig zoo ntawm chromium, nickel, thiab molybdenum.
Cov ntsiab lus no pab txo qis cov pa roj carbon sib npaug thiab txhim kho weldability thaum tuav lub zog siab.
3. Tswj Rolling thiab Microstructure Refinement
Kev tswj cov dov thiab ua kom txias txias yog siv los ua kom cov nplej loj, uas ua rau muaj qhov tsis zoo - qhov kub thiab txias, tshwj xeeb tshaj yog ntawm -40℃.
Ib qho zoo - cov qauv nplej kuj tseem ua rau muaj zog dua thiab ua haujlwm zoo dua rau cov pob txha tawg.
4. Cov kev xav tau ntawm kev kho cua sov thiab vuam
Txawm hais tias P690QL1 muaj qhov zoo weldability, preheating thiab interpass kub tswj feem ntau yog tsim nyog los tiv thaiv txias cracking.
Tom qab-weld kev kho cua sov feem ntau pom zoo kom rov ua kom tawv tawv hauv tshav kub- thaj chaw cuam tshuam thiab xyuas kom muaj kev ncaj ncees.
5. Kev soj ntsuam zoo
Cov txheej txheem tsim khoom suav nrog kev ntsuas ultrasonic, ntsuas cov cuab yeej cuab tam, thiab kev tswj xyuas nruj kom ua tau raws li EN 10028-6 cov qauv.
Cov kev tshuaj xyuas no ua kom zoo ib yam thiab kev ntseeg siab rau kev siv lub nkoj siab.
daim ntawv thov
Kev lag luam Petrochemical thiab tshuaj lom neeg
P690QL1 yog dav siv nyob rau hauv fabrication ntawm siab hlab ntsha, reactors, thiab cia tso tsheb hlau luam. Cov khoom no ua haujlwm nyob rau hauv kev kub siab, kub siab, thiab corrosive tej yam kev mob, thiab cov hlau muaj zog yield zog, zoo toughness, thiab kuj rau hydrogen-induced cracking kom ntseeg tau kev ua tau zoo thiab ntev kev pab cuam lub neej.
Fais fab Tsim Sector
Cov hlau feem ntau yog siv rau hauv lub tshuab hluav taws xob boilers, suav nrog boiler nruas, headers, thiab cov khoom siv hluav taws xob. Nws muaj peev xwm tiv taus siab siab thiab kub, ua ke nrog cov weldability zoo heev, ua rau nws tsim nyog rau cov khoom siv hluav taws xob tseem ceeb uas yuav tsum muaj kev ntseeg siab.
Cryogenic Applications
Vim nws qhov kub tsis zoo -kub toughness (mus rau -40 degree), P690QL1 yog siv nyob rau hauv LNG cia tso tsheb hlau luam, cryogenic separators, thiab lwm yam cuab yeej ua hauj lwm nyob rau hauv tsis tshua muaj kub. Nws cov nplua-grained microstructure xyuas kom tsis txhob tawg tawg nyob rau hauv txias txias.
Offshore thiab Marine Engineering
P690QL1 feem ntau ua haujlwm nyob rau hauv offshore platforms, subsea pipelines, thiab cov qauv nkoj. Cov ntawv thov no xav tau lub zog siab, qaug zog, thiab tiv thaiv corrosion, tag nrho cov no yog muab los ntawm cov hlau quenched thiab tempered microstructure thiab tswj cov tshuaj muaj pes tsawg leeg.
Nuclear fais fab kev lag luam
Cov hlau yog siv rau cov khoom tseem ceeb hauv nuclear fais fab nroj tsuag uas muaj kev nyab xeeb thiab kev ntseeg siab yog qhov tseem ceeb. Nws cov khoom siv zoo ib yam, zoo heev weldability, thiab muaj peev xwm tswj tau qhov kev ua tau zoo nyob rau hauv kev ntxhov siab ua rau nws haum rau reactor siab hlab ntsha thiab lwm yam qauv.
Heavy Machinery thiab Kev Tsim Kho
P690QL1 kuj tseem siv rau hauv cov tshuab hnyav, xws li crane booms, kev txhawb nqa hydraulic, thiab cov khoom siv loj, qhov twg siab zog thiab zoo formability yuav tsum tau txo qhov hnyav thaum tswj cov qauv kev ruaj ntseg.
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.
P690QL1 yog dab tsi?
P690QL1 yog lub siab - lub zog quenched thiab tempered alloy structural steel. Nws muaj qhov zoo heev toughness, weldability thiab corrosion kuj, dav siv nyob rau hauv hnyav machinery, kev tsim kho thiab offshore engineering teb xav tau siab load- bearing muaj peev xwm.
Dab tsi yog cov khoom tseem ceeb ntawm P690QL1?
Cov khoom siv tshuaj tseem ceeb ntawm P690QL1 suav nrog C, Si, Mn, P, S, Cr, Mo, Ni, thiab lwm yam. Kev tswj hwm nruj ntawm cov ntsiab lus tsis huv (tshwj xeeb yog P thiab S) ua kom nws cov khoom siv kho tshuab thiab kev ua haujlwm zoo.
Qhov tsawg kawg nkaus tawm lub zog ntawm P690QL1 yog dab tsi?
Qhov tsawg kawg nkaus yield zog ntawm P690QL1 yog 690 MPa, uas yog qhov tseem ceeb Performance index uas distinguishes nws los ntawm cov qauv zoo tib yam steel. Qhov no siab yield zog ua rau nws dais loj loads nyob rau hauv engineering daim ntaub ntawv.
Lub zog tensile ntau ntawm P690QL1 yog dab tsi?
Lub zog tensile ntawm P690QL1 feem ntau yog li ntawm 770 MPa txog 940 MPa. Lub zog no ua kom zoo ductility thaum tswj siab hardness, ua tau raws li qhov yuav tsum tau ua ntawm complex engineering ib puag ncig.
Cov txheej txheem kev kho cua sov dab tsi P690QL1 raug?
P690QL1 raug quenching thiab tempering kub kho. quenching txhim kho hardness thiab lub zog, thaum tempering txo brittleness thiab txhim kho toughness, ua rau cov hlau muaj sib npaug txhua yam khoom.
Puas yog P690QL1 yooj yim rau vuam?
Yog lawm, P690QL1 muaj weldability zoo. Preheating kom zoo (feem ntau yog 80-150 degree) thiab tom qab vuam kev kho cua sov tuaj yeem zam qhov sib tsoo thiab ua kom lub zog thiab tawv ntawm qhov sib koom ua ke.
P690QL1 yog dab tsi?
P690QL1 feem ntau yog siv rau hauv kev tsim cov tshuab hnyav, kev tsim kho tshuab (xws li excavator caj npab), offshore platforms, choj kev txhawb nqa thiab lwm yam qauv uas yuav tsum tau muaj zog thiab kav ntev.
Dab tsi yog qhov cuam tshuam toughness ntawm P690QL1?
P690QL1 muaj kev cuam tshuam zoo heev, tshwj xeeb tshaj yog nyob rau qhov kub thiab txias. Lub zog cuam tshuam ntawm -20℃feem ntau tsis tsawg dua 30 J, uas tuaj yeem tiv taus qhov cuam tshuam tam sim ntawd hauv qhov chaw txias.
P690QL1 puas tuaj yeem siv rau hauv qhov chaw qis - qhov kub thiab txias?
Yog lawm, P690QL1 yog tsim rau qis- qhov kub thiab txias. Nws qhov zoo qis-kub toughness xyuas kom meej tias nws yuav tsis nkig los yog tawg thaum ua haujlwm ntawm qhov kub thiab txias li -20 degree, yoog rau qhov chaw txias.
Lub hardness ntawm P690QL1 yog dab tsi?
Lub hardness ntawm P690QL1 (HB) feem ntau yog nyob nruab nrab ntawm 220 thiab 280. Qhov hardness ntau yam sib npaug hnav tsis kam thiab machinability, ua rau nws yooj yim rau txiav, xyaum thiab lwm yam kev ua haujlwm.