ABS E thiab ABS D yog pawg ntawm cov khoom siv hlau hlau uas muaj ntawv pov thawj los ntawm American Bureau of Shipping (ABS), sib txawv feem ntau los ntawm lawv qhov ntsuas kub tsawg -kub toughness. Cov qhab nia no yog qhov tseem ceeb hauv kev tsim khoom nkoj kom ntseeg tau tias muaj kev ncaj ncees hauv ntau qhov chaw ua haujlwm. Qhov sib txawv tseem ceeb ntawm lawv yog nyob rau hauv qhov tsawg kawg nkaus qhov kub ntawm qhov uas lawv cov kev cuam tshuam toughness (Charpy V-notch test) yog lav.
Qhov txawv tseem ceeb
Qhov sib txawv tseem ceeb yog qhov kev ntsuas kub ntawm qhov yuav tsum tau ua, uas txiav txim siab lawv daim ntawv thov kev pabcuam. ABS D Qib steel yuav tsum tau ua kom muaj zog txaus ntawm 0℃F (-18℃). Qhov no ua rau nws tsim nyog rau cov nkoj ua haujlwm hauv qhov txias, tab sis tsis yog Arctic, dej, xws li North Atlantic. Hauv qhov sib piv, ABS E Qib steel yuav tsum ua kom tau raws li qhov yuav tsum tau ua kom muaj zog ntawm qhov kub thiab txias ntawm -40℃F (-40℃). Qhov kev ua tau zoo ntawm qhov kub thiab txias no tsim nyog rau kev siv hauv cov nkoj dej khov, cov nkoj xa khoom hauv Arctic, thiab cov qauv raug rau lub caij ntuj sov. Yuav kom ua tiav qhov no, qib E steel yuav tsum nruj dua tshuaj lom neeg muaj pes tsawg leeg tswj (xws li, finer grain xyaum) thaum lub sij hawm tsim khoom. Yog li ntawd, qhov kev xaiv tau pom meej meej: ABS D yog rau kev pabcuam dav dav hauv cov huab cua txias, thaum ABS E yog qhov yuav tsum tau ua rau kev ua haujlwm hauv cheeb tsam Arctic lossis Antarctic hnyav uas qhov kev pheej hmoo ntawm kev tawg tawg yog qhov hnyav heev.
Tshuaj muaj pes tsawg leeg
|
ABS GRADE E general Strength Chemical Composition |
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|
Qib |
Cov ntsiab lus Max (%) |
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|
C |
Si |
Mn |
P |
S |
N |
|
|
ABS qib E |
0.18 |
0.1-0.35 |
0.70 |
0.035 |
0.035 |
0.02 |
|
ABS qib Ddav davLub zog tshuaj muaj pes tsawg leeg |
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|
Qib |
Cov ntsiab lus Max (%) |
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|
C |
Si |
Mn |
P |
S |
N |
|
|
ABS qib D |
0.21 |
0.35 |
0.80 |
0.035 |
0.035 |
0.02 |
Mechanical Property
|
ABS GRAD Egeneral zog khoom |
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|
Qib |
|
Mechanical Property |
Charpy V Impact Test |
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|
Thickness |
Yield |
Tensile |
Elongation |
Qib |
Zog 1 |
Zog 2 |
|
|
ABS qib E |
mm |
Min Mpa |
Mpa |
Tsawg% |
-40 |
J |
J |
|
t Tsawg dua lossis sib npaug li 50 |
235 |
400-520 |
22% |
20 |
27 |
||
|
50＜t Tsawg dua lossis sib npaug rau 70 |
235 |
400-520 |
22% |
24 |
34 |
||
|
70＜t Tsawg dua lossis sib npaug rau 100 |
235 |
400-520 |
22% |
27 |
41 |
||
|
Lus Cim: Lub Zog 1 yog qhov kev ntsuas cuam tshuam, Lub Zog 2 yog qhov ntev |
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|
ABS qib Dgeneral zog khoom |
|||||||
|
Qib |
|
Mechanical Property |
Charpy V Impact Test |
||||
|
Thickness |
Yield |
Tensile |
Elongation |
Qib |
Zog 1 |
Zog 2 |
|
|
ABS qib D |
mm |
Min Mpa |
Mpa |
Tsawg% |
-20 |
J |
J |
|
t Tsawg dua lossis sib npaug li 50 |
235 |
400-520 |
18% |
20 |
27 |
||
|
50＜t Tsawg dua lossis sib npaug rau 70 |
235 |
400-520 |
18% |
24 |
34 |
||
|
70＜t Tsawg dua lossis sib npaug rau 100 |
235 |
400-520 |
18% |
27 |
41 |
||
|
Lus Cim: Lub Zog 1 yog qhov kev ntsuas cuam tshuam, Lub Zog 2 yog qhov ntev |
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