Qhov sib txawv ntawm LR AH32 thiab LR AH69 steel phaj - Kev Paub

LR AH32 yog qhov siab dua - lub zog steel phaj ntawv pov thawj los ntawm Lloyd's Register (LR) rau kev tsim nkoj thiab kev siv dej hiav txwv. Qib "A" txhais tau hais tias nws raug kuaj xyuas ntawm 0 degree, kom ntseeg tau tias muaj zog txaus rau cov dej hiav txwv dav dav. Nws muaj qhov tsawg kawg nkaus lub zog ntawm 315 MPa (46 ksi) thiab lub zog tensile xws li 440 txog 590 MPa (64-83 ksi), nrog qhov tsawg kawg nkaus elongation ntawm 22%. Cov tshuaj muaj pes tsawg leeg yog nruj me ntsis tswj nrog carbon Tsawg dua los yog sib npaug rau 0.18% thiab manganese 0.90-1.60%. Qib no yog siv dav rau cov qauv ntawm lub nkoj thiab cov khoom siv nkoj dav dav.

LR AH69 yog ib qho ultra- siab- lub zog marine steel phaj kuj tau lees paub los ntawm Lloyd's Register (LR), tsim los rau kev thov cov qauv siv. Nws raug kuaj xyuas ntawm 0℃thiab muaj qhov tsawg kawg nkaus lub zog ntawm 690 MPa thiab lub zog tensile xws li 770 txog 940 MPa, nrog qhov tsawg kawg nkaus elongation ntawm 16-18%. Cov tshuaj muaj pes tsawg leeg yog tswj hwm nruj nrog cov pa roj carbon tsawg dua lossis sib npaug li 0.21%, manganese Tsawg dua lossis sib npaug li 1.70%, thiab tuaj yeem suav nrog cov ntsiab lus microalloying xws li Ni, Cr, Mo, V, thiab Ti kom ua tiav lub zog siab dua thaum tswj kev zoo weldability. Qib no yog tsim los rau qhov xav tau tshaj plaws load-cov ntaub ntawv siv hauv kev tsim cov nkoj thiab cov chaw tawm ntug dej hiav txwv uas xav tau lub zog siab tshaj plaws - rau qhov hnyav piv .

Ob leeg LR AH32 thiab LR AH69 yog LR- ntawv pov thawj shipbuilding steels nrog rau kev cuam tshuam toughness kuaj ntawm 0 degree, ua kom ntseeg tau kev ua tau zoo nyob rau hauv ib puag ncig marine. Lawv qhov sib txawv tseem ceeb nyob rau hauv lub zog theem: AH32 muaj qhov tsawg kawg nkaus lub zog ntawm 315 MPa nrog tensile lub zog ntawm 440-590 MPa, haum rau dav dav - lub zog hull kev tsim kho, thaum AH69 muab qhov siab tshaj qhov tsawg kawg nkaus lub zog ntawm 690 MPa nrog rau tensile ntau dua {{17}, 90 MPa rau lub zog tensile. xav tau kev thauj khoom-cov ntawv thov cov kabmob uas yuav tsum tau ua kom muaj zog-rau-qhov hnyav piv. Ob qib tshwj xeeb tswj cov tshuaj lom neeg muaj pes tsawg leeg thiab tswj kom zoo weldability rau qhov tseem ceeb marine kev pab cuam, txawm hais tias AH69 yuav tsum tau complex alloying thiab advanced ua xws li quenching thiab tempering kom ua tiav nws cov khoom kho kom zoo dua qub.

Tshuaj muaj pes tsawg leeg

LR AH32 siab zog tshuaj muaj pes tsawg leeg
Qib	Cov ntsiab lus Max (%)
Qib	C	Si	Mn	P	S	Al	N
LR AH 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 AH69 ntxiv muaj zog Chemical Composition
Qib	Cov ntsiab lus Max (%)
Qib	C	Si	Mn	P	S	Al	N
SIB AH69	0.21	0.55	1.70	0.035	0.035	0.015	0.020
	Nb	V	Ti	Cu	Cr	Ni	Mo
	0.02-0.05	0.03-0.10	0.02

Mechanical Property

LR AH32 siab zog khoom
Qib		Mechanical Property			Charpy V Impact Test
Qib	Thickness	Yield	Tensile	Elongation	Qib	Zog 1	Zog 2
LR AH 32	mm	Min Mpa	Mpa	Tsawg%	0	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 AH69 muaj zog muaj zog ntxiv
Qib		Mechanical Property			Charpy V Impact Test
Qib	Thickness	Yield	Tensile	Elongation	Qib	Zog 1	Zog 2
SIB AH69	mm	Min Mpa	Mpa	Tsawg%	0	J	J
	t Tsawg dua lossis sib npaug li 50	690	770-940	16%		46	69
	50＜t Tsawg dua lossis sib npaug rau 70	690	770-940	16%		46	69
	70＜t Tsawg dua lossis sib npaug rau 100	690	770-940	16%		46	69
Lus Cim: Lub Zog 1 yog qhov kev ntsuas cuam tshuam, Lub Zog 2 yog qhov ntev