SS400 txhais li cas Hauv JIS G3101
SS400 yog cov qauv carbon steel qib uas tau teev tseg hauv JIS G3101. Lub npe hu ua "SS" rau cov qauv hlau ntxiv rau "400" rau 400 MPa chav kawm ntawm lub zog tensile yam tsawg kawg nkaus. JIS G3101 kho tensile lub zog ntawm 400-510 MPa thiab qhov tsawg kawg nkaus tawm lub zog ntawm 245 MPa. Elongation yog tabulated tiv thaiv phab ntsa thickness, yog li lub teeb phab ntsa raj thiab ib tug hnyav phab ntsa raj tsis tuav rau tib daim duab, thiab ib tug tib elongation naj npawb quoted tsis thickness yog tsis muaj nuj nqis.
Lub ntsiab lus uas txiav txim siab txog kev sib cav feem ntau yog qhov no: JIS G3101 tsis yuam kom muaj tshuaj lom neeg muaj pes tsawg leeg rau SS400. Kev txwv tsis pub muaj kev pom zoo thaum lub sijhawm txiav txim. Q235B nyob rau hauv GB / T 700, S235JR nyob rau hauv EN 10025-2 thiab A36 nyob rau hauv ASTM A36 / A36M tag nrho kho carbon, manganese, phosphorus thiab sulfur txwv. Tias yog vim li cas SS400 raj thiab Q235B raj ob leeg tuaj yeem ua tau raws li lawv tus kheej cov qauv thiab tseem sib txawv ntawm cov pa roj carbon monoxide thiab weldability.
Qib sib npaug hauv Cov Txheej Txheem Loj
| Qhov system | Qib | Yam tsawg kawg nkaus | Tensile band | Chemistry tswj |
|---|---|---|---|---|
| JIS G3101 | SIB 400 | 245 MPa rau | 400-510 MPa | Tsis tau txib; pom zoo ntawm kev txiav txim |
| GB/T 700 | Q235B | 235 MPa rau | 370-500 MPa | Tsau: C max 0.20%, Mn max 1.40% |
| TS EN 10025-2 | S235 JR | 235 MPa (t txog 16 hli) | 360-510 MPa | Kho: C max 0.17%, P max 0.035%, S max 0.035% |
| ASTM A36 / A36M / ASTM A36M / ASTM A36 / ASTM A36 / ASTM A36 / ASTM A36 / ASTM A36 / ASTM A36 / A36M / ASTM A36 / ASTM A36 / ASTM A36 / ASTM A36 / A36M / ASTM A36 / ASTM A36 / ASTM A36 / A36M / ASTM A36 / ASTM A36 / A36M / ASTM A36 / ASTM A36 / ASTM A36 / ASTM A36 / ASTM A36 / ASTM A36 / ASTM A36 / ASTM A36 / ASTM A36 / ASTM A36 / ASTM A36 / A36M / ASTM A36 / ASTM A36 / ASTM A36) thiab ASTM A36 | A36 | 250 MPa | 400-550 MPa | Tsau: C max 0.26% rau cov seem nyias |
| ASTM A500 / A500M | Qib C hollow seem | 345 MPa rau | 427 MPa yam tsawg kawg nkaus | Tsau rau tus qauv |
Tsis muaj qib hauv cov lus ntawd yog qhov poob qis - rau SS400. S235JR yog qhov ze tshaj plaws hauv qib tawm tab sis muaj zog phosphorus thiab sulfur tswj, uas txhim kho toughness thiab nce nqi zeb. Q235B yog qhov kev lag luam hloov pauv hauv Asia vim tias cov khoom lag luam thiab tensile bands sib tshooj SS400 thoob plaws qhov muaj txiaj ntsig thickness ntau. ASTM A500 Qib C raug xaiv thaum lub luag haujlwm yuav tsum muaj kwv yees li 100 MPa ntau dua li SS400 tuaj yeem lav.
Dimension Standards rau SS400 Hollow Sections
JIS G3101 npog cov khoom, tsis yog hollow seem geometry. Tube rounds, squares thiab rectangles feem ntau yog tsim los rau EN 10219-1 thiab EN 10219-2 rau txias- cov seem tsim los yog mus rau EN 10210-1 rau cov ntu kub ua tiav, thiab rau JIS G3444 rau kev pabcuam hauv Nyij Pooj. Kev xa mus tsuas yog SS400 tawm ntawm phab ntsa thickness kam rau ua, kaum lub vojvoog, twist thiab straightness undefined, thiab cov kam rau ua kom haum rau ntawm qhov chaw ntau dua li lub zog theem.
Dab tsi los txheeb xyuas ntawm Mill Certificate Ua ntej hloov pauv
Nug rau tus naj npawb cua sov, kev tshuaj xyuas cov khoom lag luam thiab cov ntaub ntawv ntsuas tensile es tsis yog nqe lus ntawm qib sib npaug. Tshawb xyuas cov ntsiab lus carbon tiv thaiv cov txheej txheem vuam, paub meej tias tus nqi tawm los yog coj los ntawm cov tuab tau muab, thiab paub meej tias daim duab elongation tiv thaiv cov thickness kab ntawm tus qauv. Rau qhov txias - tsim cov ntu hollow, xyuas kom meej tias cov chav kawm kam rau ua tau sib xws nrog cov duab kos thiab lub kaum sab xis ntawm lub kaum sab xis tso cai rau cov ntsiab lus sib txuas.
Cov lus nug nquag
Q:Puas yog SS400 zoo ib yam li Q235B?
A: Tsis yog. Ob qho av hauv ib lub zog zoo sib xws, tab sis SS400 tawm chemistry kom pom zoo thaum Q235B kho carbon ntawm 0.20% siab tshaj plaws thiab manganese ntawm 1.40% siab tshaj hauv GB / T 700.
Q:Dab tsi yog EN sib npaug ntawm SS400?
A: EN 10025-2 S235JR zaum ze tshaj plaws ntawm 235 MPa yam tsawg kawg nkaus tawm los rau tuab txog 16 hli, nrog tensile 360-510 MPa. Vim hais tias chemistry yog tswj, nws tsis yog qhov muag tsis pom kev.
Q:Tus txheej txheem twg tswj hwm qhov ntau thiab tsawg ntawm SS400 raj?
A: JIS G3101 tswj cov khoom nkaus xwb. Qhov ntau thiab tsawg thiab kam rau ua raws li EN 10219-2, EN 10210-1 lossis JIS G3444, nyob ntawm seb cov seem yog txias-tsim lossis kub tiav.
Q:SS400 raj puas tuaj yeem welded yam tsis muaj preheat?
A: Hauv cov ntu nyias, yog, vim tias qib qis carbon. Rau cov phab ntsa hnyav lossis qhov ntsuas kub qis, cov pa roj carbon sib npaug ntawm daim ntawv pov thawj zeb thiab cov txheej txheem vuam tsim nyog yuav tsum tau tshuaj xyuas ua ntej.
Q:SS400 xav tau dab tsi elongation?
A: Qhov yuav tsum tau yog thickness nyob ntawm JIS G3101. Nyeem tus nqi los ntawm kab tuab tuab ntawm daim ntawv pov thawj kev xeem es tsis lees txais ib feem pua ntawm cov lus hais.