GB / T 700 Cov Hlau Carbon Qauv Hlau - Cov xov xwm khoom {}} xov xwm

Cov Qauv Carbon Txheej Txheem Hlau - (ISO 630: 1995, Cov Qauv Txheej Txheem, Thoob, Cov Nqis, Feem Thiab Profiles)

GB / T 700 {{{{- xyoo 2006 yog siv rau cov carbon cov qauv steel rau kev siv dav dav (tsis muaj cov phaj, cov khoom siv, thiab lwm yam.

‌Cov Ntawv Khoom‌

‌Daim hlau: Steel daim hlau thiab cov kab txaij ntawm ntau yam tuab.

‌Profiles: Cov qauv hlau txheej txheem steel (piv txwv li, Kuv - Beams, raws, cov ces kaum) rau kev ua haujlwm hauv tsev.

‌Tuav: Hlau tuav hauv ntau tus ntoo khaub lig - seem ntawm cov duab (piv txwv li, puag ncig, square).

‌Kev siv cov xwm txheej‌

Feem ntau siv nyob rau ntawm ambient kub.

Tsim los dais li qub.

Tsis muaj kev cai tshwj xeeb rau kev ua kom xeb los yog siab - kub ua tau zoo.

Feem ntau sib sau ua ke ua ke ntawm vuam, riveting, lossis bolting.

‌Piv Txwv Thov‌

Lub hom phiaj tseem ceeb ntawm 30-zaj dab neeg lub tsev nyob hauv Beijing sivH - Daim Duab Zoo Li Tus Hlau Thiab Kuv - Tsov GirdersUa los ntawmQ235B Hlau(IbGB / T 700-2006), Sawv cev rau ib daim ntawv thov classic ntawm tus qauv no.

‌Qib qib hlau nomenclature hauv GB / T 700-2006‌

Tus txheej txheem ua haujlwm muaj qhov tseeb thiab intuitive naming system rau cov qhab nia steel. Piv txwv li,"Q235B"Yog txiav tawm raws li nram no:

‌"Q": Sawv cev rau Suav Pinyin tus kheej ntawm"Qu"(tawm los), taw qhiapaib lub zog‌.

‌"235": Txhais tau hais tias tus qauv xa khoom muaj txiaj ntsig zoo, hauvMPa (lossis N / MM²)‌.

‌"B": Qhia txog tusTau Qib Siab, Nrog qib ib txog d hauv kev txiav txim siab ntawm qhov zoo.

‌Kev xaiv tau kev ua tiav‌:

‌"F"(Bowing steel) lossis"Z"(Tua cov hlau, feem ntau rho tawm).

Yog xav paub ntxiv txog cov khoom siv tshuaj lom neeg thiab cov neeg kho tshuab, xa mus rau tus qauv kev faib tawm ntawm cov qhab nia zoo (}} d) thiab deoxidation txoj kev (F / ZZ).

ere peb qhiaQhov sib txawv ntawm Q195, Q215, Q235 & Q275 hlau, cov koob no steel txhua tus muaj rau Suav cov qauv roj teeb carbon, cov nyiaj nyob hauv qab no qhia qhov sib txawv ntawm cov tshuaj lom neeg thiab cov khoom siv neeg kho mob.

Suav Txheem Carbon Cov Hlau Txheem Tshwj Xeeb

		Tshuaj Muaj Tshuaj
Hlau Series	Qib hlau	C% (tsawg dua lossis sib npaug)	SI% (tsawg dua lossis sib npaug)	Mn (tsawg dua los yog sib npaug)	P (tsawg dua lossis sib npaug)	S (tsawg dua los yog sib npaug)
Q195	Q195	0.12	0.3	0.5	0.035	0.04
Q215 series	Q215A	0.15	0.35	1.2	0.045	0.05
Q215 series	Q215B	0.15	0.35	1.2	0.045	0.045
Q235 series	Q235A	0.22	0.35	1.4	0.045	0.05
	Q235B	0.2	0.35	1.4	0.045	0.045
	Q235C	0.17	0.35	1.4	0.04	0.04
	Q235D	0.17	0.35	1.4	0.035	0.035
Q275 Series	Q275A	0.24	0.35	1.5	0.045	0.05
	Q275B	0.21	0.35	1.5	0.045	0.045
	Q275C	0.2	0.35	1.5	0.04	0.04
	Q275D	0.2	0.35	1.5	0.035	0.035

	Cov Cuab Yeej Siv Cov Neeg Kho Tshuab (N / hli 2=mpa)
Teem nqi	Paib lub zog	Lub zog tensile
Q195	195	315-430
Q215	215	335-450
Q235	235	370-500
Q275	275	410-540

Cov Qauv Sib Luag
Phiaj suav GB / T, YB	Amelikas teb ASTM	Nyiaj txiag JIS	Lub teb chaws Yelemees Din en	Lus teb chaws Bs en	Fabkis Nf en	ISO	Teb chaws Ks	Is Nrias teb Yog
Q195	Qib B	SS330 Sphc	S185(1.0035)			E185 Fe (310)		D
Q215	Qib C Cs hom b						SS330 (SS34)	FEEM-330
Q235-A	Qeb D	Tuss400	S235JR (1.0038)			E235 A E235 B E235 C E235 D	Tuss400 (SS41)
Q235-B			S235J0(1.0114)					FE-410
Q235-C			S235J2(1.0117)
Q235-D			S235JR (1.0038)
Q275	SS Qib 40 (275 )	SS490	S275JR (1.0044) S275J0(1.0143) S275J2(1.0145)			E275 (Fe430)	SS490	FE-490
Q345-A	Teem nqi 50 (345)	SPFC590	E355(1.0060)			E355
Q345-B			S355JR (1.0045)
Q345-C			S355J0(1.0553)
Q345-D			S355J2(1.0577)
Q345-E			S355NL (1.0546)

Dab tsi yog qhov sib txawv ntawm Q275 Phaj thiab Q235 Phaj?
Ua ntej, cov qoob loo tau ntau yog sib txawv: cov qoob loo txwv ntawm Q235 PHAJ yog 235MPA; Cov txiaj ntsig txwv ntawmQ275 Phajyog 275MPA. Tag nrho cov ntawm lawv yog cov qauv carbon zoo tib yam siv hlau, q sawv cev rau cov txiaj ntsig txwv ntawm cov khoom siv hlau, thiab cov lej hauv qab no xa mus rau cov khoom siv steel.

Thib ob, cov ntsiab lus carbon thiab tensile lub zog yog txawv:Q235 PhajCov ntsiab lus carbon yog 0.14-0.22%, lub zog tensile yog 375-500; Q275 Phaj cov ntsiab lus carbon yog tsawg dua 0.37%, lub zog tensile yog 410-560. Cov pa roj carbon cov ntsiab lus ntawm Q275 phaj feem ntau dua li ntawm Q235 phaj, thiab lub zog tensile kuj tseem muaj zog dua.

Thib peb, kev siv ntau: Q235 lub phaj tau thov rau cov tuam tsev thiab cov zog, cov hlau, cov hlau ua kom zoo rau cov tshuab ua liaj ua teb, conveyor saw thiab txuas txuas.

Dab tsi yog qhov sib txawv ntawm Q235 steel thiab s355 steel?

Q235 steel yog ib txwm muaj carbon txheej txheem hlau, thaum lub sij hawm s355 qis ntawm Q235 MPa lub zog ntawm S355 steel tsis tsawg tshaj 355MPA. S355 hlau muaj lub zog siab dua thiab tawv dua Q235 tus hlau, nrog Weldability zoo thiab cuam tshuam.

Dab tsi yog cov tshuaj sib txawv ntawm Q235 steel thiab s355 steel?

Cov tshuaj sib xyaw tsuas yog siv C, SI, MN, S, P thiab lwm yam khoom siv tau txhim kho lub zog thiab cov hlau muaj zog.

Kev sib piv ntawm cov khoom siv cov neeg kho mob ntawm Q235 steel thiab s355 steel?

Cov khoom siv tshuab ntawm S355 steel yog feem ntau zoo dua Q235 tus hlau, suav nrog ntau dua lub zog, tensile lub zog thiab kev cuam tshuam todively. S355 hlau tuaj yeem nyob twj ywm cov cuab yeej zoo hauv qab cov kub tsawg, nws ua S355 steel tsim rau kev ua yeeb yam kom nruj.

Dab tsi yog Q235 steel thiab s355 hlau ua nyob rau hauv cov nqe lus ntawm corrosion tsis kam?

S355 steel feem ntau muaj kev tiv thaiv corrosion zoo dua Q235 hlau vim tias nws muaj ntau cov alloy hais. Hauv qee qhov kev thov marine engineering, S355 cov hlau yuav yog qhov kev xaiv zoo dua, lossis Q235 yuav muab cov kev kho tshwj xeeb los txhim kho nws cov corrosion tsis kam.

GB / T 700 Cov Hlau Hlau Qauv