SPV235 thiab SPV450 yog lub siab lub nkoj zoo steel daim hlau tsim los rau Japanese Industrial Standard JIS G3115, tshwj xeeb yog tsim los rau nruab nrab kub kev pab cuam nyob rau hauv welded siab hlab ntsha, boilers, thiab cia tso tsheb hlau luam. Lub npe "SPV" stands rau Steel Phaj rau Vessels, thiab tus naj npawb qhia tias qhov tsawg kawg nkaus tensile lub zog (rau SPV450) los yog qhov tsawg kawg nkaus yield zog (rau SPV235). Cov qib no tau siv dav hauv cov roj refineries, cov nroj tsuag tshuaj, thiab cov chaw tsim hluav taws xob uas yuav tsum muaj kev ua tau zoo ntawm qhov kub siab.
Qhov txawv tseem ceeb:
Qhov sib txawv ntawm qhov tseem ceeb yog lawv lub zog theem thiab lub hauv paus tsim. SPV235 qhia txog qhov tsawg kawg nkaus lub zog ntawm 235 MPa (nrog lub zog tensile feem ntau 410 MPa lossis siab dua), thaum SPV450 qhia qhov muaj zog tensile yam tsawg kawg nkaus ntawm 450 MPa (nrog rau lub zog sib thooj feem ntau ntau dua lossis sib npaug rau 245 MPa lossis siab dua nyob ntawm thickness). Qhov no ua rau SPV450 ntau dua - cov khoom siv muaj zog, muaj peev xwm tiv taus cov kev ntxhov siab ntau dua thiab ua kom cov phab ntsa nyias nyias.
Qhov sib txawv ntawm lub zog no yog ua tiav los ntawm kev sib txawv ntawm cov tshuaj sib txawv. SPV235 yog cov hlau me me uas muaj cov pa roj carbon tsawg heev (feem ntau Tsawg dua lossis sib npaug li 0.18%) thiab cov ntsiab lus manganese, muab cov weldability zoo thiab formability. SPV450 yuav tsum muaj cov pa roj carbon ntau dua thiab manganese cov ntsiab lus, feem ntau nrog micro- alloying cov ntsiab lus, uas ua rau muaj cov pa roj carbon ntau dua (Ceq). Yog li ntawd, fabrication xav tau txawv heev. SPV235 tuaj yeem welded nrog tsawg kawg nkaus preheating thiab cov txheej txheem yooj yim, thaum SPV450 xav tau kev tswj vuam nruj: yuav tsum tsis tshua muaj-hydrogen consumables, preheating preheating, tswj cov cua sov input, thiab yuav tsum post{11}}weld heat treatment (PWHT) rau feem ntau thicknesses los tiv thaiv kev tawg.
Tshuaj muaj pes tsawg leeg
|
SWV 235Tshuaj muaj pes tsawg leeg |
|||||
|
Qib |
Cov ntsiab lus Max (%) |
||||
|
C |
Si |
Mn |
P |
S |
|
|
SWV 235 |
0.18-0.20 |
0.35 |
1.40 |
0.030 |
0.030 |
|
SPV450Tshuaj muaj pes tsawg leeg |
|||||
|
Qib |
Cov ntsiab lus Max (%) |
||||
|
C |
Si |
Mn |
P |
S |
|
|
SPV450 |
0.18 |
0.75 |
1.60 |
0.030 |
0.030 |
Mechanical Property
|
Qib |
|
SPV235 Mechanical Property |
||
|
Thickness |
Yield |
Tensile |
Elongation |
|
|
SWV 235 |
mm |
Min Mpa |
Mpa |
Tsawg% |
|
6-50 |
235 |
400-510 |
17% |
|
|
50-100 |
215 |
400-510 |
21% |
|
|
100-200 |
195 |
400-510 |
24% |
|
|
Qib |
|
SPV450 Mechanical Property |
||
|
Thickness |
Yield |
Tensile |
Elongation |
|
|
SPV450 |
mm |
Min Mpa |
Mpa |
Tsawg% |
|
6-50 |
450 |
570-700 |
19% |
|
|
50-100 |
430 |
570-700 |
26% |
|
|
100-200 |
410 |
570-700 |
20% |
|
