Qhov sib txawv ntawm LR AH32 thiab LR AH50 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 khoom nkoj thiab kev siv dej hiav txwv. Qib "A" txhais tau hais tias nws raug kuaj xyuas ntawm 0℃(32℃F), ua kom 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 AH50 yog ib qho ntxiv - siab - lub zog marine steel phaj kuj tau ntawv pov thawj los ntawm Lloyd's Register (LR), tsim los rau kev thov ntau yam kev siv. Nws yog qhov cuam tshuam rau kev sim ntawm 0℃thiab muaj qhov tsawg kawg nkaus lub zog ntawm 500 MPa thiab lub zog tensile xws li 610 txog 770 MPa, nrog qhov tsawg kawg nkaus elongation ntawm 18%. Cov tshuaj muaj pes tsawg leeg muaj cov pa roj carbon tsawg dua lossis sib npaug li 0.21% thiab manganese Tsawg dua lossis sib npaug li 1.70%, nrog cov ntsiab lus microalloying xws li Nb thiab V. Qib no feem ntau yog muab rau hauv cov xwm txheej zoo li qub lossis TMCP thiab yog siv rau cov nkoj loj, cov chaw tawm sab nraud, thiab cov khoom tseem ceeb- cov kabmob .

Ob leeg LR AH32 thiab LR AH50 yog LR- ntawv pov thawj siab - lub zog marine steels nrog rau kev cuam tshuam toughness kuaj ntawm 0 degree, kom ntseeg tau tias 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 AH50 muab qhov siab tshaj qhov tsawg kawg nkaus lub zog ntawm 500 MPa nrog tensile zog ntau dua 500 MPa, ntau dua tensile mus txog 10 xav tau kev thauj khoom-cov ntaub ntawv bearing yuav tsum muaj zog-rau-hnyav piv piv. Ob qib muaj cov tshuaj tswj cov tshuaj muaj pes tsawg leeg thiab tswj kom muaj kev sib txuas zoo rau kev pabcuam hauv hiav txwv tseem ceeb, txawm hais tias AH50 feem ntau yuav tsum tau ua tiav ntau dua vim nws lub zog ntau dua.

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 AH50 ntxiv muaj zog Chemical Composition
Qib	Cov ntsiab lus Max (%)
Qib	C	Si	Mn	P	S	Al	N
LR AH 50	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 AH50 muaj zog muaj zog ntxiv
Qib		Mechanical Property			Charpy V Impact Test
Qib	Thickness	Yield	Tensile	Elongation	Qib	Zog 1	Zog 2
LR AH 50	mm	Min Mpa	Mpa	Tsawg%	0	J	J
	t Tsawg dua lossis sib npaug li 50	500	610-770	18%		33	50
	50＜t Tsawg dua lossis sib npaug rau 70	500	610-770	18%		33	50
	70＜t Tsawg dua lossis sib npaug rau 100	500	610-770	18%		33	50
Lus Cim: Lub Zog 1 yog qhov kev ntsuas cuam tshuam, Lub Zog 2 yog qhov ntev