S460QL1 thiab S500QL1 yog siab -lub zog, quenched thiab tempered structural steel daim hlau tsim los rau European tus qauv EN 10025-6. Cov lus "QL1" qhia txog lawv qhov kev xa khoom: Quenched (Q) thiab Tempered (T) nrog lav qhov cuam tshuam toughness sim longitudinally (L1) ntawm qhov kub thiab txias (feem ntau -40℃lossis -60℃). Cov qib no yog tsim los rau cov txheej txheem tseem ceeb uas xav tau kev sib xyaw kom zoo ntawm lub zog siab, zoo heev kub-kub toughness, thiab weldability, xws li nyob rau hauv offshore lug, heavy-duty mobile cranes, mining khoom, thiab high-kev ua tau zoo tsheb thauj mus los.
Qhov txawv tseem ceeb:
Qhov sib txawv ntawm qhov tseem ceeb yog lawv lub zog. S460QL1 muaj qhov tsawg kawg nkaus tawm lub zog ntawm 460 MPa, thaum S500QL1 muab lub zog ntau dua ntawm 500 MPa. Qhov no ua rau S500QL1 muaj peev xwm tiv taus cov khoom zoo li qub, tso cai rau kom muaj peev xwm txo qhov hnyav lossis nce kev nyab xeeb hauv kev tsim.
Txhawm rau ua tiav lub zog siab dua no thaum tswj xyuas qhov nruj "QL1" toughness yuav tsum, S500QL1 yuav tsum muaj cov tshuaj ua kom zoo dua qub thiab kev tswj xyuas meej thaum lub sij hawm quenching thiab tempering txheej txheem. Nws feem ntau suav nrog kev ua kom zoo ntxiv ntawm micro-alloying ntsiab (xws li Niobium thiab Vanadium) thiab ua tib zoo sib npaug ntawm cov pa roj carbon thiab manganese. Yog li ntawd, S500QL1 feem ntau muaj cov pa roj carbon ntau dua me ntsis (Ceq) piv rau S460QL1. Qhov no ua rau muaj kev xav tau ntau dua fabrication rau S500QL1. Vuam, tshwj xeeb tshaj yog, yuav tsum muaj kev tswj hwm nruj dua: yuav tsum siv cov khoom tsim nyog tsawg- hydrogen consumables, preheat kev tswj ntawm preheat thiab interpass kub, ceev ceev txwv ntawm tshav kub input, thiab feem ntau post-weld heat treatment (PWHT) rau tuab seem los tiv thaiv hydrogen nyob rau hauv cracking{14} tshav kub- thaj tsam cuam tshuam.
Tshuaj muaj pes tsawg leeg
|
S460 QL 1Tshuaj muaj pes tsawg leeg |
||||||||
|
Qib |
Cov ntsiab lus Max (%) |
|||||||
|
C |
Si |
Mn |
P |
S |
N |
B |
Cr |
|
|
S460 QL 1 |
0.20 |
0.80 |
1.70 |
0.020-0.025 |
0.010-0.015 |
0.015 |
0.005 |
1.50 |
|
Cu |
Mo |
Nb |
Ni |
Ti |
V |
Zr |
|
|
|
0.50 |
0.70 |
0.06 |
2.0 |
0.05 |
0.12 |
0.15 |
|
|
|
S500 QL1Tshuaj muaj pes tsawg leeg |
||||||||
|
Qib |
Cov ntsiab lus Max (%) |
|||||||
|
C |
Si |
Mn |
P |
S |
N |
B |
Cr |
|
|
S500 QL1 |
0.20 |
0.80 |
1.70 |
0.020-0.025 |
0.010-0.015 |
0.015 |
0.005 |
1.50 |
|
Cu |
Mo |
Nb |
Ni |
Ti |
V |
Zr |
|
|
|
0.50 |
0.70 |
0.06 |
2.0 |
0.05 |
0.12 |
0.15 |
|
|
Mechanical Property
|
Qib |
S460 QL 1Mechanical Property |
|||||
|
Thickness |
Yield |
Tensile |
Elongation |
Min Impact Zog
|
||
|
S460 QL 1 |
mm |
Min Mpa |
Mpa |
Tsawg% |
-60 |
30J |
|
3<> |
460 |
550-720 |
17 |
-60 |
30J |
|
|
50<> |
440 |
550-720 |
17 |
-60 |
30J |
|
|
100<> |
400 |
500-670 |
17 |
-60 |
30J |
|
|
Qib |
S500 QL1Mechanical Property |
|||||
|
Thickness |
Yield |
Tensile |
Elongation |
Min Impact Zog
|
||
|
S500 QL1 |
mm |
Min Mpa |
Mpa |
Tsawg% |
-60 |
30J |
|
3<> |
500 |
590-770 |
17 |
-60 |
30J |
|
|
50<> |
480 |
590-770 |
17 |
-60 |
30J |
|
|
100<> |
440 |
540-720 |
17 |
-60 |
30J |
|
