Q235C steel phaj

Q235B steel phaj yog hom qis carbon steel. Lub teb chaws tus qauv GB / T 700-2006 "Carbon Structural Steel" muaj cov ntsiab lus meej. Q235B yog ib qho ntawm cov khoom siv hlau feem ntau hauv Suav teb. Nws yog pheej yig thiab tuaj yeem siv rau hauv cov khoom siv feem ntau uas tsis xav tau kev ua haujlwm siab.

Txoj kev:
(1) Nws yog tsim los ntawm Q + tus lej + cim qib zoo + cim deoxidation. Nws tus naj npawb steel yog prefixed nrog "Q" los sawv cev rau qhov taw tes tawm ntawm cov hlau, thiab cov lej hauv qab no sawv cev tus nqi taw tes ntawm MPa. Piv txwv li, Q235 sawv cev rau carbon structural steel nrog ib tug yield point (σs) ntawm 235 MPa.
(2) Yog tias tsim nyog, lub cim ntawm qib zoo thiab deoxidation txoj kev tuaj yeem qhia tau tom qab tus lej hlau. Cov cim qib zoo yog A, B, C, D. deoxidation txoj kev cim: F sawv cev rau cov hlau npau npau; b Sawv cev rau cov hlau tsis zoo; Z sawv cev rau cov hlau tua; Lub TZ txhais tau tias Tshwj Xeeb Kill Steel. Cov hlau tua yuav tsis muaj lub cim cim, uas yog, ob qho tib si Z thiab TZ tuaj yeem tso tseg tsis muaj cim. Piv txwv li, Q235-AF stands rau Class A boiling steel.
(3) Lub hom phiaj tshwj xeeb ntawm cov pa roj carbon steel, xws li choj hlau, nkoj hlau, thiab lwm yam, feem ntau siv txoj kev qhia ntawm cov qauv hlau, tab sis ntxiv ib tsab ntawv qhia lub hom phiaj ntawm qhov kawg ntawm tus lej hlau.

Lub ntsiab tshuaj muaj pes tsawg leeg ntawm Q235C
C	Si	Mn	P	S
0.17	0.35	1.40	0.040	0.040

Thickness (hli)
qw 235c	≤ 16	> 16 ≤ 40	> 40 ≤ 60	> 60 ≤ 100	> 100 ≤ 150	> 150
Yield zog (≥Mpa)	235	225	215	215	195	185
Tensile zog (Mpa)	370-500

Siv:
Q235B muaj qee yam elongation, lub zog, zoo toughness thiab castability, thiab yooj yim rau stamp thiab weld. Nws yog dav siv nyob rau hauv kev tsim khoom ntawm cov khoom siv dav dav. Nws yog tsuas yog siv los vuam cov khoom siv nrog cov kev xav tau zoo hauv kev tsim kho thiab choj engineering.

AB qhia qhov txawv ntawm Q235A thiab Q235B
: Cov hlau yog tag nrho cov hlau. Nyob rau hauv lub teb chaws tus qauv GB700-88, cov khoom sib txawv ntawm Q235A thiab Q235B feem ntau yog nyob rau hauv cov ntsiab lus carbon ntawm hlau. Cov ntsiab lus carbon ntawm Q235A cov khoom yog 0.14-0.22%;
Lub Rooj Tswjhwm Saib Q235A tsis ua qhov kev sim cuam tshuam, thaum Q235B ua rau chav ntsuas kub ntawm V-notch. Hais txog kev hais lus, cov khoom siv hluav taws xob ntawm cov hlau ua los ntawm Q235B yog qhov zoo dua li cov khoom ua los ntawm Q235A.
Raws li ib txwm muaj, steel mills kos cov ntawv tiav ntawm daim ntawv qhia ua ntej tawm hauv lub hoobkas. Cov neeg siv tuaj yeem txiav txim siab seb cov khoom ntawm daim ntawv qhia tus kheej yog Q235A, Q235B lossis lwm yam khoom siv. Tsim siab P≤ 1.6MPa; Ua haujlwm kub 0 ~ 350 ° C; Hlau phaj thickness> = 20mm