Qhov txawv ntawm LR AH36 thiab LR AH46 steel phaj - Kev Paub

LR AH36 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 355 MPa thiab tensile lub zog ntawm 490 txog 620 MPa, nrog qhov tsawg kawg nkaus elongation ntawm 21%. 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%. Qib no yog siv dav rau cov qauv hull, decks, thiab offshore platforms qhov twg weldability zoo heev thiab sib npaug zog yuav tsum tau.

LR AH46 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 raug kuaj xyuas ntawm 0℃thiab muaj 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%. Cov tshuaj lom neeg 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 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 AH36 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 lub ntsiab sib txawv yog nyob rau hauv lub zog theem: AH36 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 AH46 muab ib tug siab tshaj tawm los ntawm lub zog ntawm 460 MPa nrog tensile lub zog xav tau ntau tshaj li 10 570 { thauj khoom- cov ntawv thov bearing yuav tsum muaj zog-rau-hnyav piv piv. Ob qib tshwj xeeb tswj cov tshuaj muaj pes tsawg leeg nrog cov pa roj carbon tsawg dua lossis sib npaug li 0.20-0.21% thiab tswj cov kev sib txuas zoo rau cov kev pabcuam hauv hiav txwv tseem ceeb, txawm tias AH46 feem ntau yuav tsum tau ua tiav ntau dua kom ua tiav nws cov khoom siv kho kom zoo.

Tshuaj muaj pes tsawg leeg

LR AH36 siab zog tshuaj muaj pes tsawg leeg
Qib	Cov ntsiab lus Max (%)
Qib	C	Si	Mn	P	S	Al	N
LR AH 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 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 AH36 siab zog khoom
Qib		Mechanical Property			Charpy V Impact Test
Qib	Thickness	Yield	Tensile	Elongation	Qib	Zog 1	Zog 2
LR AH 36	mm	Min Mpa	Mpa	Tsawg%	0	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 AH46 muaj zog muaj zog ntxiv
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

Qhov sib txawv ntawm LR AH36 thiab LR AH46 steel phaj