S690QL1 thiab S890QL1 yog ultra- siab- lub zog, quenched thiab tempered structural steel phaj tsim raws li European tus qauv EN 10025-6. Qhov kev xaiv qhia lawv qhov tsawg kawg nkaus tawm lub zog (690 MPa thiab 890 MPa raws li) thiab "QL1" cov lus xaus qhia txog lawv qhov kev xa khoom: Quenched (Q) thiab Tempered (T) nrog longitudinal (L1) cuam tshuam toughness kuaj. Cov qib no yog tsim los rau cov khoom muaj kev ntxhov siab hauv kev xav tau xws li kev siv tshuab hnyav (crane booms, tsheb chassis), cov cuab yeej siv mining, thiab cov txheej txheem ua haujlwm siab heev uas muaj zog heev - rau qhov hnyav piv thiab zoo toughness yog qhov tseem ceeb.
Qhov txawv tseem ceeb:
Thawj qhov txawv yog lawv lub zog. S690QL1 muaj qhov tsawg kawg nkaus lub zog ntawm 690 MPa, thaum S890QL1 muab lub zog muaj zog ntau dua ntawm 890 MPa (thiab muaj zog tensile ntau dua). Qhov no ua rau S890QL1 haum rau kev thauj khoom hnyav tshaj plaws -cov ntaub ntawv kabmob, ua kom qhov hnyav tshaj plaws hauv kev tsim.
Ua kom tiav qib siab zog no yuav tsum muaj cov ntsiab lus tseeb thiab nruj dua, feem ntau nrog cov qib siab dua ntawm cov pa roj carbon, manganese, thiab micro-alloying ntsiab xws li chromium, npib tsib xee, molybdenum, thiab boron thaum lub sij hawm quenching thiab tempering txheej txheem. Yog li ntawd, S890QL1 muaj qhov sib npaug ntau dua cov pa roj carbon sib npaug (Ceq) thiab tawg tau yooj yim piv rau S690QL1. Qhov no ua rau muaj kev sib tw ntau dua hauv kev tsim, tshwj xeeb tshaj yog vuam. Vuam S890QL1 xav tau cov txheej txheem nruj heev: kev siv tshwj xeeb sib txuam, ultra- siab- lub zog siv tau, kev tswj xyuas kom zoo ntawm preheating (feem ntau siab dua 150 degree) thiab sib cuam tshuam qhov kub thiab txias, tsis tshua muaj hluav taws xob tawm tswv yim, thiab yuav luag ib txwm yuav tsum tau tshaj tawm {{12}WughT hauv kev kho cua sov (WughT) tshav kub- cuam tshuam cheeb tsam thiab tiv thaiv hydrogen{14}}induced cracking.
Tshuaj muaj pes tsawg leeg
|
S690 QL 1Tshuaj muaj pes tsawg leeg |
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|
Qib |
Cov ntsiab lus Max (%) |
|||||||
|
C |
Si |
Mn |
P |
S |
N |
B |
Cr |
|
|
S690 qw 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 |
|
|
|
S890QL 1Tshuaj muaj pes tsawg leeg |
||||||||
|
Qib |
Cov ntsiab lus Max (%) |
|||||||
|
C |
Si |
Mn |
P |
S |
N |
B |
Cr |
|
|
S890 qw 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 |
|
|
Mechanical Property
|
Qib |
S690 QL 1Mechanical Property |
|||||
|
Thickness |
Yield |
Tensile |
Elongation |
Min Impact Zog
|
||
|
S690 qw 1 |
mm |
Min Mpa |
Mpa |
Tsawg% |
-60 |
30J |
|
3<> |
890 |
940-1100 |
11 |
-60 |
30J |
|
|
50<> |
830 |
880-1100 |
11 |
-60 |
30J |
|
|
100<> |
800 |
820-1000 |
11 |
-60 |
30J |
|
|
Qib |
S890QL 1Mechanical Property |
|||||
|
Thickness |
Yield |
Tensile |
Elongation |
Min Impact Zog
|
||
|
S890 qw 1 |
mm |
Min Mpa |
Mpa |
Tsawg% |
-60 |
30J |
|
3<> |
890 |
940-1100 |
11 |
-60 |
30J |
|
|
50<> |
830 |
880-1100 |
11 |
-60 |
30J |
|
|
100<> |
800 |
820-1000 |
11 |
-60 |
30J |
|
