A517GRQ yog qhov siab- Lub zog quenched thiab tempered steel phaj, nrog ultra- kub nruj thiab qis nrib cov kev xav tau.
A517GRQ Hlau Hlau Qib Piav Qhia:
"A": Qhia tias cov neeg Asmeskas hlau Alloy;
"517": Qhia tau tias muaj txiaj ntsig lub zog ntawm lub phaj steel yog 517mpa.
"Gr": Cov tsiaj ntawv luv rau qib.
A517GrQ siab zog phaj tshuaj siv tshuaj lom neeg:
Tus qauv | C | Mn | P | S | Si | Ni | Cr | Mo | V |
| A517GRQ | 0.12-0.23 | 0.95-1.30 | 0.025 | 0.025 | 0.15-0.35 | 1.20-1.50 | 1.0-1.5 | 0.4-0.6 | 0.03-0.08 |
A517GRQ Hlau Hlau Cov Khoom Siv:
Tus qauv | Lub zog tensile, mpa | Paib lub zog, mpa | Elongation nyob rau hauv 2 hli |
| A517GRQ | 725-930 | 620 | 14 |
A517GRQ Hlau Phaj Ntau Lawm thiab tej Txheej Txheem Txaus
Cov ntsiab lus ntau lawm:
Nrog rau kev txhim kho cov roj offshore thiab extraction rau tobper dej, tus kheej {{}, muaj zog, thiab tuab ntawm khib cov phiaj hlau. Piv txwv li, ib qho 350 {- Kuv lub zog ntawm 152%, thiab ib qho kev sib tw ntawm 142,4 mm, ib qho kev cuam tshuam ntawm 14 xyoos, thiab ib qho kev cuam tshuam ntev ntawm 142,4 mm, ib qho kev cuam tshuam ntawm 14 xyoos, ib qho kev cuam tshuam ntev ntawm 142,4 mm, ib qho kev cuam tshuam ntawm 14 lub zog (feem ntau ntawm cov kub qis (feem ntau ntawm -40 ° C ntawm 1/4 Thickness ntawm phaj thiab -27 ° C ntawm qhov tseem ceeb, piv txwv li, 1/2 tuab ntawm lub phaj). Txhawm rau ua kom tau raws li cov cai no, kev lag luam tau mob siab los tsim cov hlau hnyav-tuab khib nyiab hnyav. Piv txwv li, kev tsim muaj patent nrog ntawv tshaj tawm ntawm NN102345045A4545A45A45A454 Khib Qhov Hlau A544GrQ thiab nws txoj kev tsim khoom.
A method for directly producing heavy-thickness rack steel plates using continuous casting slabs. Furthermore, the rack steel plate has a thickness of 114–152.4 mm and is directly manufactured using continuous casting slabs. The resulting yield strength is 690 MPa, tensile strength is 790–930 MPa, elongation is 19%, Z-direction performance (reduction of area) is 35%, Charpy impact energy at 1/4 thickness of the plate at -40°C is >100 J, and Charpy impact energy at 1/2 thickness of the plate at -27°C and -40°C is >100 J.
Txoj kev tsim khoom rau ncaj qha tsim cov hnyav {{}} thickness rack steel hlau siv nruam cov slabs. Cov ntaub ntawv raw yog tsim cov tshuaj lom neeg sib xyaw ua ke ntawm qhov hnyav me me, thiab txuas ntxiv ua ntu zus los ua kom muaj zog ntawm 370 Piv rau cov kev tsim muaj nrog cov lej ntawm CN102345045A, uas siv VD Refining Rack Steel thiab lawv txoj kev tsim qauv "ua haujlwm RH ua kom zoo thiab txuas ntxiv ua ke. RH ua kom muaj kev tsim cov hlau nplaum ntau lawm nrog cov ntsiab lus hydrogen kom ntseeg tau tias cov ove}}}}}}}}}}}} Cov khoom lag luam ntawm cov khib nyiab hlau. Cov tub ntxhais zoo ntawm cov nplais uas tsim los ntawm kev txuas mus txuas ntxiv (piv txwv li cov khoom lag luam uas tau ua los ntawm kev tso tawm ntawm cov khoom siv khib nyiab ntawm cov khib nyiab hlau.
Tom qab txuas ntxiv txuas, cov nplais yog them thiab maj mam txias kom txo qis hydrogen -}}}}}}}}} Txoj kev tawg. Tom qab cov cua txias txias, cov slab thaj chaw tau muab ntxuav thaum sov kom ntseeg tau tias qhov chaw nres tsheb zoo thaum nplaim tawg.
Cov txheej txheem txuas ntxiv casting slabs yog rhuab rau 1,180-1,280-1,280-1,280-1,280 ° Tom qab tuav thiab siab {- siab dej descaling, cov nplais uas yauv mus rau ob - theem lining. Thawj theem (ntxhib dov) pib ntawm 1,050-1650 ° C nrog tag nrho cov nyiaj txo ntawm 40%, ua haujlwm txo qis yob. Piv rau cov kev txo qis tshaj plaws ntawm kwv yees li 10% rau ib qho kev kho mob hnyav, yog qhov kev saib xyuas cov khoom tseem ceeb ntawm kev ua kom zoo ntawm qhov hnyav- thickness khib steel phaj. Qhov thib ob theem (ua kom tiav dov) pib ntawm 870-930 ° C nrog tag nrho cov 30%. Tom qab dov, cov paib yog huab cua - txias thiab ncaj.
Cov phiaj xwm ncaj tau yog huab cua - txias rau ntawm cov phiaj kub siab (thawj zaug
Cov phiaj, txias rau chav kub, mus rau kev mob siab thiab npau taws kom tau txais cov phiaj khib nyiab tiav. Qhov txheej txheem cua sov quenching yog ua nyob rau hauv ib qho chaw sov txuas ntxiv kom tswj tau lub sijhawm kub yog 900-930 ° Cws los ntawm dej quenching hauv lub tshuab quenching. Yuav tsum tau ua tempera txuas ntxiv rau lub sijhawm kub thiab txias rau hauv lub sijhawm kub thiab txias.
