A633 Qib A thiab A633 Qib D yog siab - lub zog, qis- alloy cov qauv hlau phaj ua raws li tus qauv ASTM A633. Lawv yog tsim los rau welded, bolted, los yog riveted lug xav tau kev txhim kho toughness nyob rau hauv qis kub, xws li nyob rau hauv lub tsev, txuas hniav, thiab lwm yam hnyav siv nyob rau hauv cov huab cua txias.
Qhov txawv tseem ceeb:
Qhov tseem ceeb sib txawv yog lawv cov qib siab zog thiab qhov ntsuas toughness. Ob qib yuav tsum muaj qhov tsawg kawg nkaus lub zog ntawm 50 ksi (345 MPa) rau cov phaj siab txog 1.5 ntiv tes (38 hli) tuab, thiab 46 ksi (317 MPa) rau cov phaj tuab txog li 4 ntiv tes (100 hli). Txawm li cas los xij, qhov tseem ceeb ntawm qhov sib txawv yog qhov yuav tsum tau ua Charpy V- ntsuas qhov cuam tshuam. A633 Qib A tsis muaj qhov yuav tsum tau muaj kev cuam tshuam, ua rau nws tus qauv siab -lub zog qis- alloy (HSLA) qib rau kev siv cov qauv siv dav dav. Hauv qhov sib piv, A633 Qib D yog qhov tshwj xeeb yuav tsum ua kom muaj qhov cuam tshuam tsawg kawg nkaus ntawm 20 ft-lb (27 J) ntawm -50℃F (-45 degree), tsim nyog nws yog cov khoom siv txhim khu kev qha rau cov kev pabcuam kub kub uas tiv thaiv kev tawg tawg yog qhov tseem ceeb.
Qhov kev txhim kho qis qis -kub toughness hauv Qib D yog ua tiav los ntawm kev ua kom zoo dua cov tshuaj muaj pes tsawg leeg thiab kev ua haujlwm. Qib D feem ntau muaj kev txwv nruj dua rau cov ntsiab lus xws li phosphorus thiab sulfur rau kev ua kom huv huv, thiab tuaj yeem siv micro-alloying nrog cov ntsiab lus xws li Niobium (Columbium) lossis Vanadium rau kev ua kom zoo zoo. Yog li ntawd, A633 Qib D feem ntau muaj qhov sib npaug ntawm cov pa roj carbon ntau dua (Ceq) thiab muaj qhov zoo tshaj plaws weldability thiab tawg tsis kam piv rau Qib A, tshwj xeeb tshaj yog nyob rau hauv cov ntu tuab thiab qhov chaw txias.
Tshuaj muaj pes tsawg leeg ntawm cov khoom tsom xam ntawm qib A633 Qib A
|
C |
Si |
Mn |
P |
S |
Al (min) |
N |
|
0.18 |
0.15-0.50 |
1.00-1.35 |
0.035 |
0.04 |
|
|
|
Cr |
Cu |
Mo |
Nb |
Ni |
Ti |
V |
|
|
|
|
0.05 |
|
|
|
Tshuaj muaj pes tsawg leeg ntawm cov khoom tsom xam ntawm qib A633 Qib D
|
C |
Si |
Mn |
P |
S |
Al (min) |
N |
|
0.20 |
0.15-0.50 |
0.70-1.35 |
0.035 |
0.04 |
|
|
|
Cr |
Cu |
Mo |
Nb |
Ni |
Ti |
V |
|
0.25 |
0.35 |
0.08 |
|
O.25 |
|
|
Mechanical zog ntawm qib A633 Qib A
|
Kub |
-35 |
-20 |
0 |
25 |
|
Notch Impact Test. Min. absorbed zog J |
41 |
54 |
61 |
68 |
|
Nominal thickness (hli) |
rau 65 |
65 - 100 |
100 - 150 |
|
ReH - Yam tsawg kawg nkaus tawm lub zog (MPa) |
290 |
290 |
|
|
Nominal thickness (hli) |
rau 65 |
65- 100 |
100-150 |
|
Rm -Tensile zog (MPa) |
430-570 |
430-570 |
|
|
Ntsuas Length (mm) |
200 |
50 |
|
A - Yam tsawg kawg elongation Lo=5,65 √ Li ntawd (%) Longitudinal |
18 |
23 |
Mechanical zog ntawm qib A633 Qib D
|
Kub |
-35 |
-20 |
0 |
25 |
|
Notch Impact Test. Min. absorbed zog J |
41 |
54 |
61 |
68 |
|
Nominal thickness (hli) |
rau 65 |
65 - 100 |
100 - 150 |
|
ReH - Yam tsawg kawg nkaus tawm lub zog (MPa) |
345 |
315 |
|
|
Nominal thickness (hli) |
rau 65 |
65- 100 |
100-150 |
|
Rm -Tensile zog (MPa) |
485-620 |
450-590 |
|
|
Ntsuas Length (mm) |
200 |
50 |
|
A - Yam tsawg kawg elongation Lo=5,65 √ Li ntawd (%) Longitudinal |
18 |
23 |
