Qhov sib txawv ntawm LR EH32 thiab LR EH55 steel phaj - Kev Paub

LR EH32 yog lub siab - lub zog steel phaj tau ntawv pov thawj los ntawm Lloyd's Register (LR) rau kev tsim nkoj thiab kev siv dej hiav txwv. Qib "E" txhais tau hais tias nws raug kuaj ntawm -40 degree, nrog qhov cuam tshuam tsawg kawg nkaus ntawm 31J (ntev). Nws muaj qhov tsawg kawg nkaus lub zog ntawm 315 MPa thiab tensile lub zog ntawm 440 txog 590 MPa, nrog rau qhov tsawg kawg nkaus elongation ntawm 22%. Cov tshuaj muaj pes tsawg leeg muaj cov pa roj carbon tsawg dua lossis sib npaug li 0.18% thiab manganese 0.90-1.60%. Cov qib no yog siv dav rau cov qauv hull, offshore platforms, thiab cov khoom siv hauv hiav txwv.

LR EH55 yog ib qho ultra-siab- lub zog marine steel phaj kuj tau ntawv pov thawj los ntawm Lloyd's Register (LR) nrog rau kev cuam tshuam toughness kuaj ntawm -40℃. Lub "55" qhia txog qhov tsawg kawg nkaus lub zog ntawm 550 MPa thiab lub zog tensile xws li 670 txog 830 MPa, nrog qhov tsawg kawg nkaus elongation ntawm 18%. Kev cuam tshuam lub zog yuav tsum muaj tsawg kawg yog 55J (ntev) lossis 37J (transverse) ntawm -40 degree. Cov tshuaj muaj pes tsawg leeg muaj cov pa roj carbon tsawg dua lossis sib npaug li 0.20% thiab manganese Tsawg dua lossis sib npaug li 1.70%. Qib no yog tsim los rau cov tswv cuab tseem ceeb, muaj kev ntxhov siab heev hauv cov nkoj loj thiab xav tau cov ntawv thov sab nrauv.

Ob leeg LR EH32 thiab LR EH55 yog LR- ntawv pov thawj siab -lub zog marine steels nrog zoo heev qis- kub toughness kuaj ntawm -40 degree, kom ntseeg tau tias kev ua tau zoo nyob rau hauv hnyav marine ib puag ncig . Lawv qhov sib txawv tseem ceeb nyob rau hauv lub zog: EH32 muaj qhov tsawg kawg nkaus lub zog ntawm 315 MPa nrog lub zog tensile ntawm 440-590 MPa, haum rau kev siv lub zog loj dav dav, thaum EH55 muab qhov muaj zog ntau dua qhov tsawg kawg nkaus lub zog ntawm 550 MPa nrog tensile-lub zog xav tau mus txog 060 MPa ntau dua. xav tau superior zog. Ob qib tshwj xeeb tswj cov tshuaj muaj pes tsawg leeg, tab sis EH55 feem ntau xav tau kev ua haujlwm siab dua kom ua tiav nws cov khoom siv kho kom zoo thaum tuav cov weldability zoo rau kev pabcuam marine tseem ceeb.

Tshuaj muaj pes tsawg leeg

LR EH32 siab zog tshuaj muaj pes tsawg leeg
Qib	Cov ntsiab lus Max (%)
Qib	C	Si	Mn	P	S	Al	N
LR EH 32	0.18	0.05	0.9-1.6	0.035	0.035	0.015
	Nb	V	Ti	Cu	Cr	Ni	Mo
	0.02-0.05	0.03-0.10	0.02	0.35	0.20	0.40	0.08

LR EH55 ntxiv muaj zog Chemical Composition
Qib	Cov ntsiab lus Max (%)
Qib	C	Si	Mn	P	S	Al	N
LR EH55	0.20	0.55	1.70	0.030	0.030	0.015	0.020
	Nb	V	Ti	Cu	Cr	Ni	Mo
	0.02-0.05	0.03-0.10	0.02

Mechanical Property

LR EH32 siab zog khoom
Qib		Mechanical Property			Charpy V Impact Test
Qib	Thickness	Yield	Tensile	Elongation	Qib	Zog 1	Zog 2
LR EH 32	mm	Min Mpa	Mpa	Tsawg%	-40	J	J
	t Tsawg dua lossis sib npaug li 50	315	440-590	22%		20	31
	50＜t Tsawg dua lossis sib npaug rau 70	315	440-590	22%		26	38
	70＜t Tsawg dua lossis sib npaug rau 100	315	440-590	22%		31	46
Lus Cim: Lub Zog 1 yog qhov kev ntsuas cuam tshuam, Lub Zog 2 yog qhov ntev

LR EH55 muaj zog muaj zog ntxiv
Qib		Mechanical Property			Charpy V Impact Test
Qib	Thickness	Yield	Tensile	Elongation	Qib	Zog 1	Zog 2
LR EH55	mm	Min Mpa	Mpa	Tsawg%	-40	J	J
	t Tsawg dua lossis sib npaug li 50	550	670-830	18%		37	55
	50＜t Tsawg dua lossis sib npaug rau 70	550	670-830	18%		37	55
	70＜t Tsawg dua lossis sib npaug rau 100	550	670-830	18%		37	55
Lus Cim: Lub Zog 1 yog qhov kev ntsuas cuam tshuam, Lub Zog 2 yog qhov ntev