Qhov txawv ntawm LR AH36 thiab LR AH50 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 uas yuav tsum muaj qhov sib npaug zoo ntawm lub zog thiab weldability.

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 raug kuaj xyuas 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 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 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 nkoj loj, cov chaw tawm sab nraud, thiab cov khoom hnyav heev -cov kabmob uas xav tau lub zog zoo tshaj - rau - qhov hnyav piv .

Ob leeg LR AH36 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 hauv qib siab: AH36 muaj qhov tsawg kawg nkaus tawm lub zog ntawm 355 MPa nrog lub zog tensile ntawm 490-620 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 tshwj xeeb tswj cov tshuaj muaj pes tsawg leeg nrog cov pa roj carbon tsawg dua lossis sib npaug ntawm 0.18-0.21% thiab tswj kom muaj kev sib txuas zoo rau kev pabcuam marine tseem ceeb, txawm tias AH50 feem ntau yuav tsum tau ua tiav ntau dua kom ua tiav nws cov khoom siv kho kom zoo. Kev xaiv ntawm lawv nyob ntawm seb qhov project yuav tsum muaj lub zog sib npaug ntawm AH36 lossis qhov kev ua tau zoo ntawm AH50 rau kev xav tau ntau yam qauv.

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 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 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 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

Qhov sib txawv ntawm LR AH36 thiab LR AH50 steel phaj