P500QH thiab P690QH yog quenched thiab tempered weldable nplua -cov qauv hlau phaj tsim los rau European tus qauv EN 10028-6, tshwj xeeb tsim rau kev siv lub nkoj siab ntawm qhov kub siab. Tus "P" qhia txog lub hom phiaj siab, tus lej qhia qhov tsawg kawg nkaus ntawm lub zog hauv MPa, thiab "QH" qhia txog qhov kev xa khoom quenched thiab Tempered nrog cov khoom pov thawj ntawm qhov kub thiab txias. Cov qib hwm no yog tsim los rau cov khoom siv siab tshaj plaws nyob rau hauv ultra-cov cua kub siab boilers, cov tshuaj reactors siab heev, thiab cov cuab yeej tsim hluav taws xob tseem ceeb ua haujlwm hauv qhov kub thiab txias.
Qhov txawv tseem ceeb:
Qhov kev txiav txim siab txawv yog lawv qhov sib txawv ntawm lub zog loj. P500QH muaj qhov tsawg kawg nkaus yield zog ntawm 500 MPa ntawm chav tsev kub, thaum P690QH muab lub zog ntau zog ntawm 690 MPa - 190 MPa (38%) nce. Lub zog zoo tshaj no tso cai rau P690QH tuaj yeem tiv taus cov qauv tsim kev ntxhov siab, ua kom cov phab ntsa thickness txo qhov siab tshaj plaws thiab txo qhov hnyav hnyav hauv ultra- siab- kev tsim cov hlab ntsha.
Kev ua tiav lub zog tshwj xeeb no thaum tib lub sijhawm ua tau raws li qhov hnyav nce siab - qhov kub thiab txias yuav tsum tau ua ntawm "QH" tsim nyog yuav tsum tau ua kom muaj kev siv tshuab metallurgical siab heev rau P690QH. Nws cov tshuaj muaj pes tsawg leeg yuav tsum muaj ntau dua cov pa roj carbon, manganese, thiab tseem ceeb alloying ntsiab xws li chromium, molybdenum, npib tsib xee, vanadium, thiab boron, ua tiav nyob rau hauv tsis tshua muaj meej quenching thiab tempering tsis. Yog li ntawd, P690QH muaj qhov sib npaug ntawm cov pa roj carbon ntau dua (Ceq) thiab tawg rhiab heev piv rau P500QH. Qhov no ua rau exponentially ntau dua fabrication complexity. Vuam P690QH tshwj xeeb tshaj yog txwv thiab xav tau qib siab tshaj plaws ntawm kev tswj cov txheej txheem: tshwj xeeb tsim, ultra-siab- zog, ultra- qis- hydrogen consumables; kev tswj xyuas qhov kub thiab txias heev (feem ntau tshaj 175 degree); tsis tshua muaj thiab precisely tswj cov cua sov input; nruj interpass qhov rais kub; thiab yuav tsum tau, ua tib zoo teev tom qab-weld heat treatment (PWHT) rau tag nrho cov thicknesses los tiv thaiv hydrogen-induced cracking thiab restore toughness nyob rau hauv lub inevitably softened thiab embrittlement-rhiab kub- cuam tshuam cheeb tsam.
Tshuaj muaj pes tsawg leeg
|
P500QH tshuaj muaj pes tsawg leeg |
|||||||
|
Qib |
Cov ntsiab lus Max (%) |
||||||
|
C |
Si |
Mn |
P |
S |
N |
B |
|
|
P500 QH |
0.18 |
0.60 |
1.70 |
0.025 |
0.015 |
0.015 |
0.005 |
|
Mo |
Cu |
Nb |
Ni |
Ti |
V |
Cr |
|
|
0.70 |
0.3 |
0.05 |
1.50 |
0.05 |
0.08 |
1.00 |
|
|
P690QH tshuaj muaj pes tsawg leeg |
|||||||
|
Qib |
Cov ntsiab lus Max (%) |
||||||
|
C |
Si |
Mn |
P |
S |
N |
B |
|
|
p690 qw |
0.20 |
0.80 |
1.70 |
0.025 |
0.015 |
0.015 |
0.005 |
|
Mo |
Cu |
Nb |
Ni |
Ti |
V |
Cr |
|
|
0.70 |
0.3 |
0.06 |
2.50 |
0.05 |
0.12 |
1.50 |
|
Mechanical Property
|
Qib |
P500QH Mechanical Property |
|||
|
Thickness |
Yield |
Tensile |
Elongation |
|
|
P500 QH |
mm |
Min Mpa |
Mpa |
Tsawg% |
|
6-50 |
500 |
590-770 |
17% |
|
|
50-100 |
480 |
590-770 |
17% |
|
|
100-150 |
440 |
540-720 |
17% |
|
|
Qib |
P690QH Mechanical Property |
|||
|
Thickness |
Yield |
Tensile |
Elongation |
|
|
p690 qw |
mm |
Min Mpa |
Mpa |
Tsawg% |
|
6-50 |
690 |
770-940 |
14% |
|
|
50-100 |
670 |
770-940 |
14% |
|
|
100-150 |
630 |
720-900 |
14% |
|
