KR F shipbuilding steel daim hlau yog cov khoom siv tseem ceeb hauv kev tsim cov nkoj hiav txwv, muaj npe nrov rau lawv cov khoom siv zoo heev, cov tshuaj muaj pes tsawg leeg, thiab cov txheej txheem kho cua sov kom zoo. Cov hlau phaj no ua lub luag haujlwm tseem ceeb hauv kev ua kom muaj kev ncaj ncees thiab kev nyab xeeb ntawm cov nkoj, ua rau lawv yog ib qho tseem ceeb hauv kev lag luam shipping.
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KR F70Siab zog Chemical Composition |
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Qib |
Cov ntsiab lus Max (%) |
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C |
Si |
Mn |
P |
S |
Al |
N |
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KR F70 |
0.18 |
0.55 |
1.60 |
0.025 |
0.025 |
- |
0.020 |
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Nb |
V |
B |
Cu |
Cr |
Ni |
Mo |
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- |
0.10 |
0.006 |
0.50 |
1.20 |
- |
0.60 |
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Crack Sensitivity: Pcm=(C+Si/30+Mn/20+Cu/20+Ni/60+Cr/20+}Mo/15+V/10+5B)%
Carbon sib npaug: Ceq=【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%
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KR F70 muaj zog ntxiv zog |
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Qib |
Mechanical Property |
Charpy V Impact Test |
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Yield |
Tensile |
Elongation |
Qib |
Zog 1 |
Zog 2 |
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Min Mpa |
Mpa |
Tsawg% |
-60 |
69 |
46 |
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KR F70 |
690 |
770-940 |
14 |
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Lus Cim: Lub Zog 1 yog qhov ntsuas qhov ntev, Lub Zog 2 yog qhov hloov pauv |
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Cov txheej txheem kev kho cua sov ntawm KR F steel daim hlau yog qhov tseem ceeb rau kev ua tiav qhov xav tau microstructure thiab txhua yam khoom. Cov hlau phaj tau dhau los ntawm kev tswj cov cua sov thiab cua txias kom ua kom zoo dua cov qauv ntawm cov nplej, txhim kho toughness, thiab txhim kho kev tiv thaiv corrosion thiab qaug zog. Cov txheej txheem no ua kom cov ntawv hlau ua tau raws li cov qauv nruj uas yuav tsum tau ua rau kev siv nkoj tsim khoom.
KR F steel phaj muaj nyob rau hauv ntau qhov ntau thiab tsawg, ua rau lawv tsim nyog rau ntau yam kev tsim khoom nkoj. Txawm hais tias nws yog lub nkoj me me lossis dej hiav txwv loj - mus rau lub nkoj thauj khoom, cov phiaj hlau no tuaj yeem hloov kho kom tau raws li qhov tshwj xeeb ntawm txoj haujlwm.
Kev ntsuam xyuas qhov cuam tshuam yog qhov tseem ceeb ntawm cov txheej txheem tswj kom zoo rau KR F steel daim hlau. Qhov kev sim no suav nrog kev xa cov hlau mus rau qhov cuam tshuam tam sim ntawd los ntsuas nws qhov tsis kam tawg lossis tawg. Cov txiaj ntsig ntawm cov kev ntsuam xyuas no xyuas kom meej tias cov hlau phaj tuaj yeem tiv taus cov xwm txheej huab cua uas tau ntsib nyob rau hauv ib puag ncig marine.
KR F steel daim hlau pom dav siv hauv kev lag luam shipbuilding. Lawv feem ntau siv rau hauv kev tsim cov hulls, decks, thiab lwm yam khoom siv ntawm cov nkoj. Lawv cov khoom zoo heev thiab kev tiv thaiv corrosion ua rau lawv tsim nyog siv rau hauv ob qho tib si dej qab zib thiab dej ntsev.
