API 5Lyeeb nkab hlau
Qib hlau: L360 lossis X52 (PSL1)
Cov kev cai ntawm cov tshuaj lom neeg muaj pes tsawg leeg:
C: ≤0.28 (seamless) ≤0.26 (welded)
Mn: ≤1.40
P: ≤0.030
S: ≤0.030
Cu: 0.50 los yog tsawg dua
Ni: ≤0.50
Cr: ≤0.50
Mo: ≤0.15
*V + Nb + Ti: ≤0.15
* Cov ntsiab lus Manganese tuaj yeem nce ntxiv los ntawm 0.05% rau txhua 0.01% txo qis hauv cov ntsiab lus carbon, txog li ntawm 1.65%
Cov kev cai ntawm cov khoom siv kho tshuab:
Lub zog tawm los: ≥360Mpa
Lub zog tensile: ≥460Mpa
Lub zog tensile ntawm cov yeeb nkab hlau welded: ≥460Mpa
Kev ncab: ≥1940 * AXC0.2 / 4600.9, qhov twg AXC yog thaj chaw hla ntawm cov qauv tensile
Kev kam rau sab nraud ntawm cov yeeb nkab hlau:
| Txoj kab uas hla sab nraud D hli | Qhov kawg sab nraud txoj kab uas hla sib txawv mm | |
| Cov yeeb nkab hlau tsis muaj qhov txuas | Cov yeeb nkab hlau vuam | |
| < 60.3 | -0.8, +0.4 | |
| 60.3 D los yog tsawg dua 168.3 los yog tsawg dua | -0.4, +1.6 | |
| 168.3 < D≤610 | ±0.005D, tab sis siab tshaj plaws ±1.6 | |
| 610 < D≤1422 | + / - 2.0 | + / - 1.6 |
| > 1422 | Los ntawm kev pom zoo | |
Phab ntsa tuab kev kam rau siab of hlau yeeb nkab:
| Phab ntsa tuab t hli | Kev kam rau siab mm |
| Cov yeeb nkab hlau tsis muaj qhov txuas | |
| 4.0 los yog tsawg dua | +0.6, -0.5 |
| 4 < t < 25 | +0.150t, -0.125t |
| 25 lossis siab dua | +3.7 los yog +0.1t, seb qhov twg loj dua -3.0 los yog -0.1t, siv qhov loj dua |
| Lub raj xa dej | |
| 5.0 los yog tsawg dua | + / - 0.5 | |
| 5.0 | < t < 15 | Ntxiv los yog rho tawm 0.1 t |
| 15 | los yog ntau dua | + / - 1.5 |
Hlau qib: L360N or X52N(PSL2)
Tshuaj lom neeg kev sau ua ke cov cai:
C: ≤0.24
Si: ≤0.45
Mn: ≤1.40
P: ≤0.025
S: ≤0.015
V: ≤0.10
Nb:≤0.05
Ti: ≤0.04
Cu: ≤0.50
Ni: ≤0.30
Cr: ≤0.30
Mo: ≤0.15
V + Nb + Ti: ≤0.15
* Cov ntsiab lus manganese tuaj yeem nce ntxiv los ntawm 0.05% rau txhua qhov kev txo qis 0.01% ntawm cov ntsiab lus carbon, txog li ntawm 1.65%.
* Tsis pub ntxiv boron ntxiv, seem B≤0.001%
Cov pa roj carbon sib npaug:
CEP cm: ≤0.25
CEIIW: ≤0.43
* Siv CE thaum cov ntsiab lus carbon ntau dua 0.12%, thiab siv CE IIW thaum P cm cov ntsiab lus carbon tsawg dua lossis sib npaug rau 0.12%.
CEP cm = C+Si/30+Mn/20+Cu/20+Ni/60+Cr/20+Mo/15+V/10+5B
Yog tias qhov tshwm sim ntawm kev tshuaj xyuas smelting ntawm B tsawg dua 0.0005%, ces tsis tas yuav suav nrog kev tshuaj xyuas ntawm cov khoom B hauv kev tshuaj xyuas cov khoom, thiab cov ntsiab lus B tuaj yeem kho tau xoom hauv kev xam cov pa roj carbon sib npaug CEP cm.
CEIIW = C+Mn/6 (C+Mo+V)/5+(Ni+Cu)/ 15
Tshuab cov khoom cov cai:
Lub zog tawm los: 360-530Mpa
Lub zog tensile: 460-760Mpa
Qhov piv ntawm cov qoob loo: ≤0.93 (tsuas yog siv rau D > 323.9mm steel yeeb nkab)
Lub zog tensile ntawm cov yeeb nkab hlau welded: ≥460Mpa
Qhov ntev tsawg kawg nkaus: = 1940 * AXC0.2 / 4600.9, qhov twg AXC yog thaj chaw hla ntawm cov qauv tensile.
Kev ntsuam xyuas CVN ntawm lub raj
Kub ntsuas 0.C
| Qhia kom meej lub cheeb sab nraud ntawm D mm | CVN loj tag nrhoLub zog nqus tauKVJ |
| 508 los yog tsawg dua | 27 |
| > 508 txog 762 | 27 |
| > 762 txog 914 | 40 |
| > 914 txog 1219 | 40 |
| > 1219 txog 1422 | 40 |
| > 1422 txog 2134 | 40 |
Sab nraud txoj kab uas hla kev kam rau siab of hlau yeeb nkab:
| Txoj kab uas hla sab nraud D hli | Qhov kawg sab nraud ntawm txoj kab uas hla | |
| Cov yeeb nkab hlau tsis muaj qhov txuas | Cov yeeb nkab hlau vuam | |
| < 60.3 | -0.4, +0.8 | |
| 60.3 D los yog tsawg dua 168.3 los yog tsawg dua | -0.4, +1.6 | |
| 168.3 < D=610 | ±0.005D, tab sis siab tshaj plaws ±1.6 | |
| 610 < D=1422 | + / - 2.0 | + / - 1.6 |
| > 1422 | Los ntawm kev pom zoo | |
Phab ntsa tuab kev kam rau siab of hlau yeeb nkab:
| Phab ntsa tuab t hli | Kev kam rau siab |
| Cov yeeb nkab hlau tsis muaj qhov txuas | |
| 4.0 los yog tsawg dua | +0.6, -0.5 |
| 4 < t < 25 | +0.150t, -0.125t |
| 25 lossis siab dua | +3.7 los yog +0.1t, seb qhov twg loj dua -3.0 lossis -0.1t, coj loj dua |
| Cov yeeb nkab vuam | |
| 5.0 los yog tsawg dua | + / - 0.5 |
| 5.0 < t < 15 | Ntxiv los yog rho tawm 0.1 t |
| 15 lossis ntau dua | + / - 1.5 |
Lub sijhawm tshaj tawm: Cuaj hlis-26-2023
