BV E550 thiab BV E500 yog siab- lub zog steel daim hlau uas tau lees paub los ntawm Bureau Veritas (BV), feem ntau yog siv rau kev siv dej hiav txwv thiab sab nrauv, xws li nkoj hulls thiab cov qauv sab nrauv. Cov hlau no yog tsim los ua kom pom qhov sib npaug ntawm lub zog, toughness, thiab weldability hauv qhov xav tau ib puag ncig. Qhov "E" qhia txog lawv qhov kev npaj siv rau kev tsim vaj tsev, thaum tus lej tus nqi qhia qhov tsawg kawg nkaus tawm lub zog hauv megapascals (MPa). Yog li, BV E550 lav lub zog tawm ntawm yam tsawg 550 MPa, thiab BV E500 lav yam tsawg 500 MPa.
Qhov txawv tseem ceeb
Qhov sib txawv tseem ceeb yog lawv lub zog txhua yam thiab ua rau kev thov kom haum. BV E550 lub zog muaj zog ntau dua (550 MPa vs . 500 MPa) muab kev thauj khoom zoo dua - cov kabmob muaj peev xwm, tso cai rau kev tsim cov qauv sib dua lossis ntau dua cov qauv uas qhov hnyav txuag lossis kev ntxhov siab hnyav yog qhov tseem ceeb. Txawm li cas los xij, qhov muaj zog ntxiv no feem ntau cuam tshuam nrog txo cov ductility thiab toughness. Yog li ntawd, BV E500, thaum muaj zog me ntsis, feem ntau pom zoo formability thiab cuam tshuam tsis kam ntawm qis kub. Qhov no ua rau E500 yog qhov kev xaiv zoo tshaj plaws rau cov ntawv thov uas xav tau kev tsim kho ntau yam lossis qhov kev txhim kho pob txha tawv yog qhov tseem ceeb. Hauv cov ntsiab lus, kev xaiv ntawm lawv suav nrog kev lag luam tawm -tawm: E550 rau lub zog siab tshaj plaws, E500 rau kev sib npaug thiab lub zog.
Tshuaj muaj pes tsawg leeg
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BV E500 ntxiv Cov Tshuaj Muaj Zog Muaj Zog Muaj Zog Tempering thiab Quenching |
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Qib |
Cov ntsiab lus Max (%) |
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|
C |
Si |
Mn |
P |
S |
Al (min) |
N |
|
|
BV E500 |
0.20 |
0.55 |
1.70 |
0.030 |
0.030 |
0.015 |
0.020 |
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BV E550 ntxiv Cov Tshuaj Muaj Zog Muaj Zog Muaj Zog Tempering thiab Quenching |
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|
Qib |
Cov ntsiab lus Max (%) |
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|
C |
Si |
Mn |
P |
S |
Al (min) |
N |
|
|
BV E550 |
0.20 |
0.55 |
1.70 |
0.030 |
0.030 |
0.015 |
0.020 |
Mechanical Property
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BV E500 ntxiv Cov khoom muaj zog siab hauv Tempering thiab quenching |
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Qib |
Mechanical Property |
Charpy V Impact Test |
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|
Yield |
Tensile |
Elongation |
Qib |
Zog 1 |
Zog 2 |
|
|
BV E500 |
Min Mpa |
Mpa |
Tsawg% |
-40 |
J |
J |
|
500 |
610-770 |
16% |
33 |
50 |
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Lus Cim: Lub Zog 1 yog qhov kev ntsuas cuam tshuam, Lub Zog 2 yog qhov ntev |
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BV E550 ntxiv Cov khoom muaj zog siab hauv Tempering thiab quenching |
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|
Qib |
Mechanical Property |
Charpy V Impact Test |
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|
Yield |
Tensile |
Elongation |
Qib |
Zog 1 |
Zog 2 |
|
|
BV E550 |
Min Mpa |
Mpa |
Tsawg% |
-40 |
J |
J |
|
550 |
670-830 |
16% |
37 |
55 |
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Lus Cim: Lub Zog 1 yog qhov kev ntsuas cuam tshuam, Lub Zog 2 yog qhov ntev |
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