Qhov sib txawv ntawm ABS FH32 thiab ABS FH40 steel phaj - Kev Paub

ABS FH32 yog lub siab - lub zog marine steel phaj ntawv pov thawj los ntawm American Bureau of Shipping (ABS) rau kev tsim nkoj thiab kev siv sab nrauv. Qib "F" qhia tau hais tias nws muaj kev cuam tshuam los ntawm qhov ntsuas kub ntawm -60 degree, kom ntseeg tau tias muaj zog tshwj xeeb rau cov hlab ntsha ua haujlwm hauv cov polar thiab Arctic ib puag ncig. Nws muaj qhov tsawg kawg nkaus lub zog ntawm 315 MPa thiab lub zog tensile xws li 440 txog 590 MPa, nrog qhov tsawg kawg nkaus elongation ntawm 22%. Cov tshuaj muaj pes tsawg leeg yog tswj hwm nruj nrog cov pa roj carbon tsawg dua lossis sib npaug li 0.16% thiab manganese 0.90-1.60%. Cov qib no yog siv dav rau cov qauv hull, offshore platforms, thiab cov dej khov hauv chav kawm uas xav tau kev ua haujlwm zoo tshaj qhov kub thiab txias.

ABS FH40 yog siab dua - lub zog marine steel phaj kuj tau ntawv pov thawj los ntawm ABS, tsim los ntawm quenching thiab tempering los yog thermo-mechanical control processing (TMCP). Zoo li FH32, nws raug kuaj xyuas ntawm -60 degree, nrog rau qhov tsawg kawg nkaus kev xav tau lub zog ntawm 26J (transverse) thiab 39J (ntev) rau cov qauv tuab. Lub "40" qhia txog qhov tsawg kawg nkaus lub zog ntawm 390 MPa thiab lub zog tensile xws li 510 txog 660 MPa, nrog qhov tsawg kawg nkaus elongation ntawm 20%. Nws cov tshuaj muaj pes tsawg leeg zoo ib yam li FH32 nrog cov pa roj carbon tsawg dua lossis sib npaug li 0.16% thiab manganese 0.90-1.60%, tab sis tej zaum yuav muaj cov qib microalloying sib txawv me ntsis. Cov qib no yog tsim los rau kev thov cov qauv siv hauv cov nkoj loj, cov chaw hauv dej hiav txwv drilling, thiab cov txheej txheem marine tseem ceeb uas yuav tsum tau ua kom muaj zog-rau-qhov hnyav.

ABS FH32 thiab ABS FH40 yog ABS- ntawv pov thawj siab - lub zog marine steels nrog qhov tshwj xeeb qis- qhov kub thiab txias tau sim ntawm -60 degree, kom ntseeg tau tias kev ua tau zoo nyob rau hauv qhov hnyav tshaj plaws Arctic thiab hnyav marine ib puag ncig. Lawv qhov sib txawv tseem ceeb nyob hauv qib siab: FH32 muaj qhov tsawg kawg nkaus lub zog ntawm 315 MPa nrog lub zog tensile ntawm 440-590 MPa, haum rau kev siv lub zog siab dav dav thiab cov qauv theem nrab, thaum FH40 muab qhov siab tshaj qhov siab tshaj tawm lub zog ntawm 390 MPa nrog tensile lub zog rau kev thov ntau dua 6 MPa- 510- xav tau lub zog zoo dua. Ob qib tshwj xeeb nruj tswj cov tshuaj muaj pes tsawg leeg nrog cov pa roj carbon tsawg dua lossis sib npaug li 0.16% thiab tswj kom muaj kev sib txuas zoo rau cov kev pabcuam tseem ceeb hauv hiav txwv, ua rau lawv zoo tagnrho rau cov dej khov nab kuab, cov ntug dej hiav txwv, thiab cov nkoj ua haujlwm hauv cheeb tsam polar.

Tshuaj muaj pes tsawg leeg

ABS FH32 siab zog tshuaj muaj pes tsawg leeg
Qib	Cov ntsiab lus Max (%)
Qib	C	Si	Mn	P	S	Al	N
ABS FH32	0.16	0.1-0.50	0.90-1.6	0.025	0.025	0.015	0.009
	Nb	V	Ti	Cu	Cr	Ni	Mo
	0.02-0.05	0.05-0.10	0.02	0.35	0.2	0.8	0.08

ABS FH40 siab zog tshuaj muaj pes tsawg leeg
Qib	Cov ntsiab lus Max (%)
Qib	C	Si	Mn	P	S	Al	N
ABS FH40	0.16	0.1-0.50	0.90-1.6	0.025	0.025	0.015	0.009
	Nb	V	Ti	Cu	Cr	Ni	Mo
	0.02-0.05	0.05-0.10	0.02	0.35	0.2	0.8	0.08

Mechanical Property

ABS FH32 siab zog khoom
Qib		Mechanical Property			Charpy V Impact Test
Qib	Thickness	Yield	Tensile	Elongation	Qib	Zog 1	Zog 2
ABS FH32	mm	Min Mpa	Mpa	Tsawg%	-60	J	J
	t Tsawg dua lossis sib npaug li 50	315	440-590	22%		22	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

ABS FH40 siab zog khoom
Qib		Mechanical Property			Charpy V Impact Test
Qib	Thickness	Yield	Tensile	Elongation	Qib	Zog 1	Zog 2
ABS FH40	mm	Min Mpa	Mpa	Tsawg%	-60	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