Q235 steel yog ib qho ntawm feem ntau siv carbon structural steels nyob rau hauv Tuam Tshoj, teej tug mus rau lub GB / T 700 tus qauv. Nws yog cov hlau tsis-alloyed, txhais tau hais tias tsis muaj cov ntsiab lus alloying ntxiv yog txhob txwm ntxiv thaum tsim khoom.
Nws qhov tseem ceeb tshaj plaws yog nws qhov kev ua haujlwm ruaj khov, zoo heev weldability, zoo plasticity, thiab txhim khu kev qha lub zog, ua rau nws haum rau ntau yam kev siv engineering.
Qhov "Q" hauv Q235 sawv cevyield zog, thiab 235 MPa yog hais txog nws qhov tsawg kawg nkaus qhov taw qhia, txhais tau hais tias thaum cov hlau raug kev nyuaj siab ntawm 235 MPa, nws pib plastically deform. Hauv kev ntsuam xyuas tensile, Q235 feem ntau muaj:
Yield zog (ReL): Ntau dua lossis sib npaug li 235 MPa
Tensile zog (Rm): 375-500 MPa
Elongation: 26% -33%, nyob ntawm thickness
Brinell hardness: 100-160 HB
Cov kev ntsuas kev ua tau zoo no tso cai rau Q235 steel kom muaj qhov sib npaug zoo ntawm lub zog thiab kev ua haujlwm, ua rau nws tsim nyog rau kev tsim kho thiab thauj khoom -cov kabmob.
Q235 yog dav siv nyob rau hauv cov tsev, txuas hniav, cov nroj tsuag muaj, guardrails, steel qauv, shipbuilding, ua liaj ua teb machinery, tsheb thav duab, thiab lwm yam. Nws yog tsuas yog xa hauv kub- dov steel phaj, steel coils, H-beams, I-beams, kaum steel, tiaj tus tuav thiab rebar-tab sis feem ntau nws yogtsis sivrau seamless kav vim nws cov khoom yam ntxwv. Cov hlau tuaj yeem siv yam tsis muaj kev kho cua sov, uas txo cov nqi ntxiv rau cov haujlwm engineering.
Qib Q235: A / B / C / D
Q235 tau muab faib ua plaub qib -Q235A, Q235B, Q235C, Q235D, uas feem ntau sib txawv ntawm cov tawv nqaij thiab cov ntsiab lus sulfur / phosphorus. Lub tshuab nqus tsev hlau (qis S thiab P), qhov zoo dua nws cov tawv thiab tsis kam ua rau tawg tawg, tshwj xeeb tshaj yog nyob rau hauv qis kub.
Impact Temperature Requirements
Q235A: Tsis xav tau kev kuaj xyuas
Q235B: +20℃cuam tshuam kuaj
Q235C: 0℃cuam tshuam kuaj
Q235D: -20℃cuam tshuam kuaj
Raws li qib mus los ntawm A → D, kev cuam tshuam kev ua tau zoo tuaj yeem txhim kho. Piv txwv li, Q235D tuaj yeem tswj tau qhov hnyav ntawm qhov kub thiab txias, txo qhov kev pheej hmoo ntawm kev tawg hauv qhov chaw txias.
Element Content Trend
Sulfur (S): txo los ntawm A → D
Phosphorus (P): A ≈ B > C > D
Cov khoom siv huv si=zoo dua toughness + zoo weldability
Q235C Composition piv txwv rau cov qauv kab teeb
Q235C yog qib siv feem ntau rau H-beams thiab I-beams, muab kev txhim kho toughness thiab kev ntseeg tau. Tej yam tshuaj muaj pes tsawg leeg txwv yog:
Carbon (C): Tsawg dua lossis sib npaug rau 0.17%
Manganese (Mn): Tsawg dua lossis sib npaug li 1.40%
Silicon (Si): Tsawg dua lossis sib npaug li 0.35%
Sulfur (S): Tsawg dua lossis sib npaug rau 0.040%
Phosphorus (P): Tsawg dua lossis sib npaug rau 0.040%
Cov kev txwv muaj pes tsawg leeg ua kom ntseeg tau tias Q235C kab teeb tuaj yeem tiv taus cov khoom siv rov ua dua, kev co, shear stress thiab dabtsi yog khoov quab yuam thaum lub sij hawm ntev - kev pabcuam kev ua haujlwm.
Yog vim li cas Q235 hlau yog dav siv rau kuv -Beams thiab H-Beams
Q235's mechanical zog ua rau nws tshwj xeeb tshaj yog tsim nyog rau kev tsim cov qauv kab teeb siv hauv hnyav- daim ntawv thov. Thaum siv los ua H-Beams lossis I-Beams, Q235 steel muab:
ruaj khov load- bearing kev ua tau zoo rau txhua kab, thav duab thiab kev txhawb nqa
Weldability zoo heev, txhawb MIG, TIG, thiab arc vuam
Cov yas zoo deformation, tiv thaiv kev ua haujlwm tsis zoo
Tus nqi siab -kev ua tau zoo, txo nqi tag nrho ntawm qhov project
Qhov zoo ntawm qhov raug nyob rau hauv kub - dov beam ntau lawm
Cov txiaj ntsig no tso cai rau Q235 kab teeb kom dav siv hauv:
Ntau- dab neeg thiab siab - cov tsev nce siab
Steel qauv Rhiav
Kev loj thiab railway choj
Mechanical manufacturing
Nkoj thiab marine engineering
Warehouse thav duab & gantry systems
Raws li cov ntaub ntawv kev lag luam, ntau dua 60% ntawm cov qauv tsim steel hauv Suav teb siv Q235 lossis Q235B kab teeb, ua pov thawj nws txoj haujlwm tseem ceeb hauv kev lag luam.
FAQ - Hais txog Q235 Steel
1. Puas yog Q235 zoo ib yam li cov hlau me me?
Yog lawm. Q235 suav hais tias yog hom hlau me me uas muaj cov ntsiab lus carbon tsawg. Nws muaj qhov siab weldability thiab yooj yim rau khoov, txiav, thiab txheej txheem.
2. Q235 puas tuaj yeem siv rau vuam?
kiag li. Q235 muaj weldability zoo heev vim nws cov ntsiab lus carbon qis dua 0.20%. Nws tsis tas yuav tsum tau preheating lossis post-weld kho cua sov hauv feem ntau.
3. Puas yog Q235 haum rau qhov chaw txias?
Rau qhov chaw txias, Q235C lossis Q235D raug pom zoo vim tias lawv muaj qhov zoo dua qis - qhov kub thiab txias cuam tshuam. Q235A / B yog qhov tsim nyog rau huab cua sov.
4. Q235 H-beams puas tuaj yeem hloov S235 lossis A36?
Yog lawm. Q235 zoo ib yam li S235 (EN) thiab ASTM A36, thiab lawv feem ntau suav hais tias sib npaug hauv kev ua haujlwm ntawm cov khoom siv rau cov qauv siv.
5. Lub neej ua haujlwm ntawm Q235 kab teeb yog dab tsi?
Hauv cov qauv tsev ib puag ncig, Q235 kab teeb tuaj yeem nyob tau 50+ xyoo. Nrog rau cov txheej txheem anticorrosion zoo, lawv lub neej ntev tuaj yeem tshaj 70 xyoo.
