Qhov sib txawv ntawm LR AH40 thiab LR AH46 steel phaj - Kev Paub

LR AH40 yog lub siab - lub zog shipbuilding steel phaj ntawv pov thawj los ntawm Lloyd's Register (LR). Qib "A" txhais tau hais tias nws raug kuaj xyuas ntawm 0 degree, kom ntseeg tau tias muaj kev ntseeg siab rau cov dej hiav txwv dav dav. Nws muaj qhov tsawg kawg nkaus lub zog ntawm 390 MPa thiab tensile lub zog ntawm 510 txog 650 MPa, nrog rau qhov tsawg kawg nkaus elongation ntawm 20%. 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, decks, thiab offshore platforms.

LR AH46 yog ib qho ntxiv - siab - lub zog marine steel phaj kuj tau lees paub los ntawm Lloyd's Register (LR), tsim los rau kev thov ntau yam kev siv. Nws raug kuaj xyuas ntawm 0℃thiab muaj qhov tsawg kawg nkaus lub zog ntawm 460 MPa thiab tensile lub zog ntawm 570 txog 720 MPa, nrog qhov tsawg kawg nkaus elongation ntawm 19%. 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 rau cov ntsiab lus microalloying xws li Nb, V, Cr, Ni, thiab Mo los txhim kho lub zog thaum tswj kev weldability. Qib no feem ntau yog muab rau hauv cov xwm txheej zoo li qub lossis TMCP thiab yog siv rau cov khoom tseem ceeb hauv cov nkoj loj thiab cov ntug dej hiav txwv.

Ob leeg LR AH40 thiab LR AH46 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: AH40 muaj qhov tsawg kawg nkaus lub zog ntawm 390 MPa nrog tensile lub zog ntawm 510-650 MPa, haum rau dav dav - lub zog hull kev tsim kho, thaum AH46 muab qhov siab tshaj tawm lub zog ntawm 460 MPa nrog lub zog tensile ntau tshaj 570 46 thauj khoom- cov ntawv thov bearing yuav tsum muaj zog-rau-hnyav piv piv. Ob chav kawm muaj cov tshuaj tswj cov tshuaj muaj pes tsawg leeg thiab tswj cov kev sib txuas zoo rau cov kev pabcuam hauv hiav txwv tseem ceeb, txawm hais tias AH46 feem ntau xav tau kev ua tiav ntau dua kom ua tiav nws cov khoom siv kho kom zoo.

Tshuaj muaj pes tsawg leeg

LR AH40 siab zog tshuaj muaj pes tsawg leeg
Qib	Cov ntsiab lus Max (%)
Qib	C	Si	Mn	P	S	Al	N
LR AW 40	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 AH46 ntxiv muaj zog tshuaj lom neeg muaj pes tsawg leeg
Qib	Cov ntsiab lus Max (%)
Qib	C	Si	Mn	P	S	Al	N
LR AW 46	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 AH40 siab zog khoom
Qib		Mechanical Property			Charpy V Impact Test
Qib	Thickness	Yield	Tensile	Elongation	Qib	Zog 1	Zog 2
LR AW 40	mm	Min Mpa	Mpa	Tsawg%	0	J	J
	t Tsawg dua lossis sib npaug li 50	390	510-650	20%		26	39
	50＜t Tsawg dua lossis sib npaug rau 70	390	510-650	20%		31	46
	70＜t Tsawg dua lossis sib npaug rau 100	390	510-650	20%		37	55
Lus Cim: Lub Zog 1 yog qhov kev ntsuas cuam tshuam, Lub Zog 2 yog qhov ntev

LR AH46 ntxiv zog muaj zog
Qib		Mechanical Property			Charpy V Impact Test
Qib	Thickness	Yield	Tensile	Elongation	Qib	Zog 1	Zog 2
LR AW 46	mm	Min Mpa	Mpa	Tsawg%	0	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