RINA D thiab RINA E yog pawg ntawm shipbuilding steel daim hlau ntawv pov thawj los ntawm Italian faib pawg neeg RINA (Registro Italiano Navale). Cov qib no qhia txog qhov yuav tsum tau muaj kev cuam tshuam rau qhov kub thiab txias, uas yog qhov tseem ceeb rau cov hlab ntsha ua haujlwm hauv qhov chaw txias. Qhov tseem ceeb sib txawv yog nyob rau hauv lawv qhov kev pab cuam qhov kub thiab txias.
Qhov txawv tseem ceeb
Qhov sib txawv tseem ceeb yog qhov tsawg kawg nkaus Charpy V- ntsuas kub ntsuas.
RINA D Qib: Yuav tsum muaj kev ntsuam xyuas ntawm 0℃(32℃F). Qib no tsim nyog rau kev siv dej hiav txwv dav dav hauv huab cua huab cua uas qis -kub brittleness tsis yog ib qho kev txhawj xeeb loj.
RINA E Qib: Xav tau qhov kev ntsuam xyuas ntawm -20℃(-4℃F). Nws yog tsim los rau cov nkoj ua haujlwm hauv hiav txwv txias dua, xws li North Atlantic lossis lub caij ntuj no nyob rau hauv qhov chaw siab dua, muab kev tiv thaiv zoo dua rau kev tawg tawg.
RINA D Ib txwm muaj zog Max Chemical Composition hauv Kub- dov
|
Element |
RINA D Max % |
Element |
RINA D Max % |
|
C |
0.21 |
Ni |
|
|
Mn |
0.60 |
Mo |
|
|
Si |
0.1-0.35 |
Al |
|
|
S |
0.035 |
Nb |
|
|
P |
0.035 |
V |
|
|
Cu |
|
Ti |
|
|
Cr |
|
N |
|
RINA E Ib txwm muaj zog Max Chemical Composition hauv Kub- dov
|
Element |
RINA E Max % |
Element |
RINA E Max % |
|
C |
0.21 |
Ni |
|
|
Mn |
0.60 |
Mo |
|
|
Si |
0.1-0.35 |
Al |
|
|
S |
0.035 |
Nb |
|
|
P |
0.035 |
V |
|
|
Cu |
|
Ti |
|
|
Cr |
|
N |
|
RINA D Cov cuab yeej muaj zog li qub hauv Kub- dov
|
Qib |
Thickness |
Yield zog |
Tensile zog |
Elongation |
Impact Zog |
|
(mm) |
MPa (min) |
MPa |
% (min) |
(KV J) (min) |
|
|
|
|
|
|
-20 degree |
|
|
RINA D |
8-240 |
235 |
400-520 |
22 |
27J |
RINA E Cov cuab yeej muaj zog li qub hauv Kub- dov
|
Qib |
Thickness |
Yield zog |
Tensile zog |
Elongation |
Impact Zog |
|
(mm) |
MPa (min) |
MPa |
% (min) |
(KV J) (min) |
|
|
|
|
|
|
-20 degree |
|
|
RINA E |
8-240 |
235 |
400-520 |
22 |
27J |
Hauv qhov tseem ceeb, qib RINA E muaj qhov qis dua -kub toughness piv rau qib D. Kev xaiv ntawm lawv yog nyob ntawm qhov kev pabcuam qis tshaj plaws ntawm lub nkoj yuav ntsib. Rau kev ua haujlwm hauv cov dej khov lossis dej txias heev, qib E yog qhov yuav tsum tau ua, thaum qib D yog txaus rau feem ntau cov nkoj lag luam niaj hnub hauv kev sov dua.
