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 Qib Qib Qib Qib Qib Qib Qib Qib Qib Qib Qib Qib Qib Qib Qib Qib Qib Qib Qib Qib Qib Qib Kawm Qib Kawm: "A": Qhia tias American Standard Alloy Steel; "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 |
Kev Kho Cua Sov:
A517GRQ / A517 Qib Q Steel phaj undergoes ib tug txheej txheem kho cua sov nyuaj los txhim kho nws cov khoom siv. Cov hlau yog rhuab rau ib qho kub tsis qis dua 900 degree, ua raws li los ntawm quenching hauv dej lossis roj. Tom qab, nws yog tempered ntawm qhov kub tsis qis dua 620 degree. Tus txheej txheem no ua kom muaj kev ua homogeneous microstructure thiab cov yam ntxwv zoo dua.
A517GRQ Hlau Phaj Ntau Lawm thiab tej txheej txheem txaus:
Kev tsim qauv rau kev tsim cov hnyav {{}} thickness rack steel hlau siv nruam cov hlau steel, raw cov ntaub ntawv raug tsim raws li nws cov tshuaj lom neeg. Cov txheej txheem ua ntu zus suav nrog KR kub hlau pretreting, lf refining slabs nrog txuas ntxiv los tsim hightration molting qis subration thiab porosity. Piv rau cov kev tsim tawm tau tshaj tawm hauv QICE CN102345045A, uas siv VD exceling thiab ingot casting, cov qauv piav qhia hauvNcaj qha ntau lawm tsim kev hnyav - thickness rack steel daim hlau siv nruam casting slabs thiab lawv txoj kev tsim qauvntiav rh refining thiab nruam casting. RH rov qab tsim cov khoom siv Molten ntau cov ntsiab lus hydrogen, kom ua rau ov} i-}}}}}}}}}}}}} Cov khoom lag luam ntawm cov khib nyiab hlau. Nruam Nruam Casting tsim cov pob zeb tsis sib xws nrog cov tub sab zoo dua (piv txwv li, yog li ua kom muaj kev ua haujlwm tseem ceeb ntawm cov khib steel phaj.
Tom qab nruam casting, cov nplais yog them thiab maj mam txias kom txo qis hydrogen -}}}}}}}} Cov khoom tawg. Ua raws li cov dej ntws qeeb, cov slab thaj chaw tau 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℃thiab ua kom muaj kev sib txuam nrog cov khoom siv thiab cov khoom ntawm cov khoom kawg. Tom qab tuav thiab siab {- siab dej descaling, cov nplais uas yauv mus rau ob - theem lining. Thawj theem (Ruv Rolling) Pib ntawm 1,050-1650℃nrog tag nrho cov kev txo ntawm 40%, ua haujlwm txo qis yob. Piv rau cov kev txo qis tshaj plaws ntawm kwv yees li 10% ib tus dhau hauv roughing hnyav- cov hlau thickness sthat, cov qauv piav qhia hauvNcaj qha ntau lawm tsim kev hnyav - thickness rack steel daim hlau siv nruam casting slabs thiab lawv txoj kev tsim qauvYuav tsum tau txo tus nqi txo ntawm 15% ib tus dhau los xyuas kom meej ntawm cov khoom tseem ceeb ntawm cov khoom tseem ceeb ntawm qhov hnyav {}} thickness khib steel phaj. Qhov thib ob theem (ua kom tiav dov) pib ntawm 870-930℃nrog kev txo qis ntawm 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 txias txias (ua raws li cov phiaj kub uas tau txias (ua raws cov phiaj xwm qeeb) lossis maj mam muab cov phiaj txias txias
Cov phiaj, txias rau chav kub, mus rau kev mob siab thiab npau taws kom tau txais cov phiaj khib nyiab tiav. Cov txheej txheem cua sov quenching yog ua nyob rau hauv ib qho kev kub siab txuas ntxiv kom tswj tau lub sijhawm kub thiab sijhawm: quenching cua sov thiab hauv} {} Yuav tsum tau ua tempera txuas ntxiv rau cov cua sov kom haum rau lub sijhawm kub thiab sijhawm:
