Structural Steel vs Cold-Rolled Steel
Cov qauv hlau thiab txias -cov hlau dov ua haujlwm sib txawv. Cov qauv hlau feem ntau dais cov khoom hnyav, xws li hauv cov tsev thiab txuas hniav, thiab raug xaiv rau nws lub zog. Txias- dov steel yog siv los ua cov duab yooj yim xws li cov khoom siv hauv tsev thiab cov khoom siv dav dav, qhov kev tsim muaj teeb meem ntau dua li lub zog. Q235A thiab Q235B yog qib ntawm cov qauv hlau; SPCC thiab DC01 yog qib txias-rolled sheet hlau. Kab lus no sib piv plaub qib kom cov khoom raug xaiv rau txhua daim ntawv thov.
Q235A thiab Q235B: Carbon Structural Steel
Q235A thiab Q235B yog ob hom carbon structural steel qib tau teev tseg hauv Suav teb tus qauv GB / T 700, Carbon Structural Steel. Ob leeg muaj qhov yuav tsum tau ua kom muaj zog tsawg kawg nkaus ntawm 235 MPa, qhia los ntawm Q thiab tus lej hauv kev xaiv. Lawv qhov sib txawv tseem ceeb yog qhov yuav tsum tau ua rau qis - qhov kub thiab txias ua haujlwm:
Q235A tsis muaj qhov tshwj xeeb yuav tsum tau ua rau qis - qhov kub thiab txias ua haujlwm. Nyob rau hauv ib puag ncig qis - qhov kub thiab txias, qhov toughness thiab plasticity ntawm Q235A yuav raug txo, tab sis tsis muaj nqi cuam tshuam los ntawm tus qauv.
Q235B yuav tsum muaj kev cuam tshuam kev ua tau zoo ntawm 20 ° C. Tus Charpy cuam tshuam tus nqi yuav tsum ua tau raws li tus qauv txwv, uas ua kom zoo dua qhov tawv thiab yas hauv kev pabcuam, thiab Q235B yog li ntawd nyiam rau cov khoom siv nrog cov kev xav tau.
Hauv kev xyaum, Q235A yog qhov tsim nyog rau cov khoom siv uas tsis muaj kev cuam tshuam tshwj xeeb, thaum Q235B raug xaiv rau cov khoom siv welded thiab dynamically loaded qhov twg yuav tsum tau muaj qhov toughness.
SPCC thiab DC01: Txias -Rolled Sheet
Tsis zoo li cov qauv hlau, txias-khoov hlau yog siv los ua cov duab yooj yim xws li cov khoom siv thiab cov khoom siv hauv tsev, tsis muaj qhov tshwj xeeb yuav tsum tau muaj zog. SPCC thiab DC01 yog ob qho uas feem ntau siv txias- dov steel qib:
SPCC ua raws li tus qauv Japanese JIS G 3141, Txias -txo cov ntawv carbon steel thiab strips. Nws muaj cov khoom ua tau zoo thiab tsim nyog rau stamping thiab txias - dabtsi yog khoov qhov chaw xws li cov khoom siv tsheb thiab cov khoom siv hauv tsev. Vim nws lub zog thiab hardness kuj tsawg, nws tsis haum rau lub zog - cov ntawv thov tseem ceeb.
DC01 ua raws li European tus qauv EN 10130, Cold rolled low carbon steel ca khoom rau txias sib sau. Nws kuj tseem muaj cov khoom ua haujlwm zoo rau stampings thiab txias -khoom siv hauv tsev, rooj tog zaum thiab cov khoom siv hluav taws xob. Piv nrog SPCC, DC01 muaj cov tshuaj sib txawv thiab cov khoom siv kho tshuab, tab sis nws kuj tsis yog rau lub zog - kev pabcuam tseem ceeb thiab yog qib sib npaug.
Qeb Sib piv Table
| Qib | Txuj | Hom | Ntsiab Feature |
|---|---|---|---|
| Q235A | GB/T 700 | Carbon steel qauv | Yam tsawg kawg nkaus tawm los 235 MPa; tsis muaj kev cuam tshuam yuav tsum tau |
| Q235B | GB/T 700 | Carbon steel qauv | Yam tsawg kawg nkaus tawm los 235 MPa; Charpy impact test ntawm 20 degrees C |
| SPCC | TIAB SA 3141 | Txias- yob daim ntawv | Zoo formability rau stamping thiab txias dabtsi yog khoov |
| dc01 ua | TS EN 10130 | Txias- yob daim ntawv | Txias- ua qib, kwv yees sib npaug ntawm SPCC |
Yuav Xaiv Cov Qib Zoo Li Cas
Rau kev thauj khoom-cov kabmob xws li kab teeb, kab thiab txuas hniav, xaiv Q235A lossis Q235B nyob ntawm seb puas muaj kev cuam tshuam toughness ntawm 20 degrees C yog xav tau los ntawm tus qauv tsim.
Rau cov qauv welded raug rau dynamic loads, nyiam Q235B tshaj Q235A vim nws guaranteed cuam tshuam tus nqi.
Rau stampings, enclosures thiab txias -bent qhov chaw xws li lub cev thiab rooj tog zaum, xaiv SPCC los yog DC01, uas yog tsim rau formability.
Tsis txhob siv SPCC lossis DC01 rau cov khoom siv thauj khoom-cov tswv cuab; lawv lub zog tsis tau lav rau tib theem li cov qauv hlau.
Kev Ntseeg Tsis Ncaj Ncees
Q235B tsis yog ib txwm yuav tsum tau tshaj Q235A. Rau qhov zoo li qub, tsis yog - cov qauv cuam tshuam hauv ib puag ncig me me, Q235A ua tau raws li qhov yuav tsum tau ua thiab raug nqi tsawg dua.
SPCC thiab DC01 tsis yog cov qauv qauv. Txawm hais tias lawv cov tsos zoo, lawv tau tsim cov qib thiab tsis tuaj yeem hloov Q235 hauv kev thauj khoom -cov kev pabcuam kabmob.
Q hauv Q235 tsis sawv ntsug rau qhov zoo. Nws sawv cev rau lub zog tawm los, thiab tsab ntawv A, B, C lossis D qhia txog qhov ntsuas qhov ntsuas kub.
SPCC thiab DC01 tsis zoo ib yam. Lawv ua raws li cov qauv sib txawv nrog rau qhov sib txawv thiab chemistry, txawm hais tias lawv muaj kwv yees li kev sib hloov hauv ntau yam tsis yog - daim ntawv thov tseem ceeb.
FAQ
Qhov txawv ntawm Q235A thiab Q235B yog dab tsi?
Ob leeg yog carbon structural steels nrog ib tug tsawg kawg nkaus yield zog ntawm 235 MPa ib GB / T 700. Q235B kuj yuav tsum tau ib tug Charpy tej yam kev kuaj ntawm 20 degrees C nrog ib tug guaranteed cuam tshuam tus nqi, thaum Q235A tsis muaj tej yam yuav tsum tau.
SPCC steel yog dab tsi?
SPCC yog ib qho txias- dov carbon steel qib uas tau teev tseg hauv JIS G 3141, tsim rau kev tsim tau zoo thiab siv rau hauv stamping thiab txias-kho daim ntawv thov xws li cov khoom siv hauv tsev thiab cov khoom siv tsheb.
DC01 steel yog dab tsi?
DC01 yog txias- dov qis- qib carbon steel tau teev tseg hauv EN 10130 rau kev ua txias txias, siv rau stampings thiab txias- khoov qhov chaw hauv tsev, rooj tog thiab khoom siv hluav taws xob.
Puas yog SPCC thiab DC01 hloov pauv tau?
Hauv ntau cov ntawv tsis yog - cov ntawv thov tseem ceeb lawv yog qhov sib npaug, tab sis lawv tau txhais los ntawm cov qauv sib txawv nrog cov kev txwv tshuaj sib txawv thiab kev ua siab ntev, yog li daim duab lossis cov lus qhia yuav tsum tau kuaj ua ntej hloov pauv.
Q235B puas tuaj yeem siv rau kev kos duab sib sib zog nqus?
No. Q235 yog qib structural, tsis yog qib tsim. Kev kos duab sib sib zog nqus thiab nyuaj stamping yuav tsum tau tsim cov qib xws li SPCC lossis DC01 nrog kev tswj cov ductility.
Lub ntsiab lus A, B, C lossis D txhais li cas hauv Q235?
Lub ntsiab lus qhia txog qhov ntsuas kub ntawm qib: A tsis muaj qhov yuav tsum tau ua, B raug kuaj ntawm 20 ° C, C ntawm 0 ° C, thiab D ntawm -20 ° C, nrog rau txhua qib ua tiav tau lees paub qhov tawv ntawm qhov kub qis.