Qhov txawv ntawm ABS DH40 thiab CCS DH40 - Kev Paub

ABS DH40 thiab CCS DH40 yog ob qho tib si siab - lub zog shipbuilding steel daim hlau tshwj xeeb tsim los rau kev tsim lub nkoj thiab cov qauv hauv hiav txwv ua haujlwm hauv qhov chaw txias. Lawv tau ntawv pov thawj los ntawm ob lub koom haum kev faib khoom loj-ABS (American Bureau of Shipping) thiab CCS (China Classification Society)-tab sis muaj kev sib npaug ntawm cov khoom siv tshuab thiab tshuaj lom neeg muaj pes tsawg leeg.

ABS Qib DH40 tau lees paub los ntawm American Bureau of Shipping. Lub npe "DH40" qhia tias nws yog siab - lub zog steel nrog qhov tsawg kawg nkaus lub zog ntawm 390 MPa thiab lub zog tensile ntau ntawm 510-660 MPa . Qhov "D" qhia txog qhov ntsuas kub ntawm -20 degree, yuav tsum muaj qhov tsawg kawg nkaus Charpy V-Notch cuam tshuam lub zog ntawm 41J (ntev) lossis 27J (transverse) rau tuab txog 50 hli. Cov ntawv thov muaj xws li nkoj hulls, offshore drilling platforms, thawv nkoj, bulk carriers, thiab tseem ceeb marine qauv.

CCS Qib DH40 tau ntawv pov thawj los ntawm Tuam Tshoj Classification Society thiab ua haujlwm ncaj qha rau ABS DH40 hauv Suav kev faib tawm. Nws qhia cov cuab yeej cuab tam zoo ib yam: qhov tsawg kawg nkaus lub zog ntawm 390 MPa, tensile zog ntawm 510-660 MPa, thiab qhov tsawg kawg nkaus elongation ntawm 20%. Zoo li nws cov ABS tus khub, CCS DH40 yuav tsum muaj kev cuam tshuam ntawm -20℃nrog yam tsawg kawg nkaus 41J (ntev ntev). Cov tshuaj muaj pes tsawg leeg yog sib piv, nrog siab tshaj carbon ntawm 0.18%, manganese ntawm 0.90-1.60%, thiab microalloying ntsiab xws li Nb thiab V rau grain refinement.

Qhov txawv tseem ceeb:
Qhov tseem ceeb ntawm qhov sib txawv ntawm ob qib no yog nyob rau hauv lawv daim ntawv pov thawj txoj cai thiab kev tswj xyuas qhov zoo. ABS DH40 ua raws li American Bureau of Shipping txoj cai thiab tau lees paub thoob ntiaj teb, tshwj xeeb tshaj yog nyob rau hauv cov haujlwm uas yuav tsum tau muaj ntawv pov thawj ABS rau cov nkoj uas tau los rau ABS- cov nkoj loj. CCS DH40 ua raws li Tuam Tshoj Classification Society cov cai thiab feem ntau tau teev tseg rau cov nkoj tsim hauv Suav shipyards los yog rau tej yaam num nyob rau hauv Suav faib. Los ntawm kev pom kev, cov hlau no suav tias yog hloov pauv tau, thiab cov tuam txhab loj tuaj yeem tsim cov ntawv pov thawj los ntawm ob lub zej zog ib txhij. Qhov kev xaiv ntawm lawv feem ntau yog txiav txim siab los ntawm tus chij xeev ntawm lub nkoj, kev nyiam ntawm nkoj nkoj, lossis cov kev xav tau tshwj xeeb. Ob qib yuav tsum tau muab nrog daim ntawv pov thawj zeb xeem (MTC) kev faib tawm pawg neeg soj ntsuam kos npe.

Tshuaj muaj pes tsawg leeg

ABS DH40 siab zog tshuaj muaj pes tsawg leeg
Qib	Cov ntsiab lus Max (%)
Qib	C	Si	Mn	P	S	Al	N
ABS DH40	0.18	0.1-0.50	0.90-1.6	0.035	0.035	0.015
	Nb	V	Ti	Cu	Cr	Ni	Mo
	0.02-0.05	0.05-0.10	0.02	0.35	0.2	0.4	0.08

CCS DH40 siab zog tshuaj muaj pes tsawg leeg

Element	CCSDH 40 Max %	Element	CCSDH 40 Max %
C	0.18	Ni	0.40
Mn	0.90-1.60	Mo	0.08
Si	0.50	Al	0.015 min
S	0.035	Nb	0.20-0.05
P	0.035	V	0.05-0.10
Cu	0.35	Ti	0.02
Cr	0.20	N

Mechanical Property

ABS DH40 siab zog khoom
Qib		Mechanical Property			Charpy V Impact Test
Qib	Thickness	Yield	Tensile	Elongation	Qib	Zog 1	Zog 2
ABS DH40	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

CCS DH40 siab zog khoom

Qib	Thickness	Yield zog	Tensile zog	Elongation	Impact Zog
	(mm)	MPa (min)	MPa	% (min)	(KV J) (min)
					-20 degree
TXC 40	8-240	390	510-650	20	41J

Qhov sib txawv ntawm ABS DH40 thiab CCS DH40