ABS D thiab CCS D yog ob qho tib si ib txwm - lub zog shipbuilding steel daim hlau tsim los rau kev tsim lub nkoj thiab cov qauv hauv hiav txwv ua haujlwm hauv cov kev pabcuam nruab nrab. Lawv tau ntawv pov thawj los ntawm ob lub koom haum kev faib loj loj-ABS (American Bureau of Shipping) thiab CCS (China Classification Society)- thiab yog technically sib npaug ntawm cov khoom siv kho tshuab thiab tshuaj muaj pes tsawg leeg.
ABS Qib D tau ntawv pov thawj los ntawm American Bureau of Shipping thiab txhais tau tias yog ib txwm muaj - lub zog steel rau kev siv nkoj tsim. Nws muaj qhov tsawg kawg nkaus lub zog ntawm 235 MPa thiab lub zog tensile ntau ntawm 400-520 MPa . Cov yam ntxwv tseem ceeb ntawm Qib D yog nws qhov ntsuas qhov ntsuas kub ntawm -20 degree, yuav tsum muaj qhov tsawg kawg nkaus Charpy V-Notch cuam tshuam lub zog ntawm 27J (ntev nruab nrab). Cov ntawv thov ib txwm muaj xws li nkoj hulls, decks, bulkheads, thiab marine structures xav tau kev txhim kho qhov kub thiab txias piv rau Qib A thiab B.
CCS Qib D tau ntawv pov thawj los ntawm Tuam Tshoj Classification Society thiab ua haujlwm ncaj nraim rau ABS D hauv Suav kev faib tawm. Nws qhia cov cuab yeej cuab tam zoo ib yam: qhov tsawg kawg nkaus lub zog ntawm 235 MPa, tensile zog ntawm 400-520 MPa, thiab qhov tsawg kawg nkaus elongation ntawm 22%. Zoo li nws tus khub ABS, CCS D yuav tsum muaj kev ntsuas kev cuam tshuam ntawm -20℃nrog tsawg kawg 27J lub zog.
Tshuaj muaj pes tsawg leeg
|
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 |
| CCS Qib Ddav davLub zog tshuaj muaj pes tsawg leeg | ||||
| C | Si | Mn | P | S |
| 0.21 | 0.10-0.35 | 0.60 | 0.035 | 0.035 |
Mechanical Property
|
ABS qib Dgeneral 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 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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CCS Qib Dgeneral zog khoom
| Yield zog (Ntau dua lossis sib npaug rau Mpa) | Tensile zog (Mpa) | Elongation nyob rau hauv ntau dua los yog sib npaug rau ,% | |
| 235 | 400-520 | 200 hli | 50 hli |
| 21 | 24 | ||
