Qhov sib txawv ntawm LR EH36 thiab LR EH46 steel phaj - Kev Paub

LR EH36 yog lub siab - lub zog shipbuilding steel phaj ntawv pov thawj los ntawm Lloyd's Register (LR). Lub npe "EH" txhais tau hais tias nws yog ib qho ntxiv -siab- qib zog nrog kev cuam tshuam toughness kuaj ntawm -40℃. Nws muaj qhov tsawg kawg nkaus lub zog ntawm 355 MPa thiab tensile lub zog ntawm 490 mus rau 620 MPa, nrog qhov tsawg kawg nkaus elongation ntawm 21%. Cov tshuaj lom neeg muaj pes tsawg leeg muaj cov pa roj carbon tsawg dua lossis sib npaug li 0.18% thiab manganese 0.90-1.60%, nrog cov ntsiab lus microalloying xws li Nb thiab V. Cov qib no tau siv dav rau kev tsim kho lub nkoj, cov ntug dej hiav txwv, thiab cov txheej txheem tseem ceeb ntawm cov nkoj ua haujlwm hauv cov dej hiav txwv hnyav.

LR EH46 yog ib qho ntxiv - 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 "46" qhia txog qhov tsawg kawg nkaus lub zog ntawm 460 MPa thiab lub zog tensile xws li 570 txog 720 MPa, nrog qhov tsawg kawg nkaus elongation ntawm 19% rau thicknesses txog 100mm. Kev cuam tshuam lub zog yuav tsum muaj tsawg kawg yog 46J (ntev) lossis 31J (transverse) ntawm -40 degree. Cov tshuaj muaj pes tsawg leeg yog nruj me ntsis tswj nrog carbon Tsawg dua los yog sib npaug rau 0.20% thiab manganese Tsawg dua los yog sib npaug rau 1.70%, featuring microalloying ntsiab. Cov qib no yog tsim los rau kev thov cov qauv siv hauv kev tsim cov nkoj thiab cov chaw sab nrauv uas xav tau lub zog zoo dua.

Ob leeg LR EH36 thiab LR EH46 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 thawj qhov sib txawv yog nyob rau hauv lub zog theem: EH36 muaj qhov tsawg kawg nkaus yield zog ntawm 355 MPa nrog tensile lub zog ntawm 490-620 MPa, haum rau dav dav-lub zog hull siv, thaum EH46 muab ib tug siab tshaj tawm lub zog ntawm 460 MPa nrog tensile zog thov mus txog 570-720 earing kev thov. zog. Ob chav kawm muaj cov tshuaj tiv thaiv muaj pes tsawg leeg thiab tswj cov weldability zoo rau cov kev pabcuam tseem ceeb hauv hiav txwv.

Tshuaj muaj pes tsawg leeg

LR EH36 siab zog tshuaj muaj pes tsawg leeg
Qib	Cov ntsiab lus Max (%)
Qib	C	Si	Mn	P	S	Al	N
LR EH 36	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 EH46 ntxiv muaj zog Chemical Composition
Qib	Cov ntsiab lus Max (%)
Qib	C	Si	Mn	P	S	Al	N
LR EH46	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 EH36 siab zog khoom
Qib		Mechanical Property			Charpy V Impact Test
Qib	Thickness	Yield	Tensile	Elongation	Qib	Zog 1	Zog 2
LR EH 36	mm	Min Mpa	Mpa	Tsawg%	-40	J	J
	t Tsawg dua lossis sib npaug li 50	355	490-630	21%		24	34
	50＜t Tsawg dua lossis sib npaug rau 70	355	490-630	21%		27	41
	70＜t Tsawg dua lossis sib npaug rau 100	355	490-630	21%		34	50
Lus Cim: Lub Zog 1 yog qhov kev ntsuas cuam tshuam, Lub Zog 2 yog qhov ntev

LR EH46 ntxiv cov khoom muaj zog
Qib		Mechanical Property			Charpy V Impact Test
Qib	Thickness	Yield	Tensile	Elongation	Qib	Zog 1	Zog 2
LR EH46	mm	Min Mpa	Mpa	Tsawg%	-40	J	J
	t Tsawg dua lossis sib npaug li 50	460	570-720	19%		31	46
	50＜t Tsawg dua lossis sib npaug rau 70	460	570-720	19%		31	46
	70＜t Tsawg dua lossis sib npaug rau 100	460	570-720	19%		31	46
Lus Cim: Lub Zog 1 yog qhov kev ntsuas cuam tshuam, Lub Zog 2 yog qhov ntev