Q215 yog qib qis- carbon structural steel qib los ntawm GB / T 700 uas nws lub zog tawm los ntawm 215 MPa muab tso rau ntawm qhov nkag ntawm Suav cov qauv steel series. Nws tsis yog lub siab lossis siab - cov khoom kub; nws yog qib xaiv thaum lub yeeb nkab yuav tsum khoov, weld thiab galvanize yooj yim thiab thaum tsim kev ntxhov siab yog me ntsis. Cov neeg siv ib txwm yog scaffolding, guardrails, qis- cov kav dej siab, cov tsev cog khoom, laj kab ncej thiab cov khoom siv dav dav.
Q215 Steel Yeeb Nkab yog dab tsi thiab qhov twg nws haum
Qhov kev xaiv ua raws li GB/T 700, qhov twg Q215 tau muab faib ua cov chav kawm zoo A thiab B. Chav A yog muab nrog chav tsev - qhov yuav tsum tau muaj qhov kub thiab txias, chav B ntxiv rau +20℃cuam tshuam kev xeem; tsis yog ib qho sub-zero lav. Vim tias cov pa roj carbon thiab manganese yog ob qho tib si qis, cov pa roj carbon sib npaug me me, uas yog vim li cas cov qib welds tsis muaj kev ceev faj tshwj xeeb thiab cov ntawv txias tsis muaj qhov tawg.
Qhov twg ib qhov project xav tau ntau dua dabtsi yog khoov lossis vuam kev ua tau zoo dua Q235 tuaj yeem zam tau, Q215 feem ntau yog qhov kev xaiv zoo dua txawm tias nws lub zog nominal qis dua. Cov qib muaj xws li welded raj, ERW raj thiab seamless raj nyob rau hauv qhov ntau thiab tsawg los ntawm me me bore conduit mus txog rau loj structural seem.
Tshuaj muaj pes tsawg leeg nyob rau hauv GB / T 700
| Khoom (%) | Q215A | Q215B |
|---|---|---|
| Cov pa roj carbon, max | 0.15 | 0.15 |
| Silicon, max | 0.30 | 0.30 |
| Manganese, max | 0.65 | 0.65 |
| Phosphorus, max | 0.045 | 0.045 |
| Sulfur, max | 0.045 | 0.045 |
Cov ntsiab lus tsis tshua muaj carbon khaws cov yas thiab weldability siab, thaum manganese pab txhawb kom muaj zog thiab tawv. Phosphorus thiab sulfur yog ob qho tib si capped kom tsis txhob txias brittleness thiab kub shortness, uas tso cai rau cov yeeb nkab yuav dov, khoov thiab welded yam tsis muaj ntug tawg.
Mechanical Properties thiab Q215 Versus Q235 Sib piv
| Khoom | Q215 | Q235B (kev siv) |
|---|---|---|
| Yield zog, min | 215 MPa | 235 MPa rau |
| Tensile zog | 335-450 MPa | 370-500 MPa |
| Elongation, min | 26 % | 26 % |
| Impact test | chav tsev kub (chav B) | +20℃thiab qis dua ib chav kawm |
Ob qib yuav tsum muab piv rau kev tsim kev ntxhov siab thiab kev tsim qauv, tsis yog ntawm tus nqi ib leeg: tus nqi sib tshooj thiab ua haujlwm nrog zeb muaj, yog li qhov sib txawv ntawm ob peb feem pua ntawm ob qho kev taw qhia tsis yog qhov kev xaiv zoo. Hardness yog qee zaum teev nyob rau hauv cov ntaub ntawv lag luam rau Q215, tab sis GB / T 700 tsis qhia txog qhov nyuaj; ib daim duab hais yog rau siv xwb thiab yuav tsum tsis txhob muab sau rau hauv ib tug purchase specification.
Hauv kev xyaum Q215 ua haujlwm rau cov qauv thauj khoom me me thiab tsis yog- qhov tseem ceeb thauj khoom- cov tswv cuab, thaum Q235 haum rau nruab nrab- thauj khoom xws li lub tsev thav duab. Qhov qis dua carbon sib npaug ntawm Q215 txo qhov kev pheej hmoo tawg thaum vuam thiab muab cov npoo ntau dua thaum cov yeeb nkab nthuav dav, swaged lossis khoov rau lub vojvoog nruj.
Tsawg-Tsuas Cwj Pwm
Q215 khaws cov cuab yeej siv tau zoo ntawm qhov kub thiab txias mus txog li -20 degree, uas npog feem ntau huab cua. Hauv qab ntawm qhov taw tes qhov cuam tshuam qhov hnyav poob qis thiab qhov kev pheej hmoo ntawm cov pob txha tawg tau nce, yog li txias - cov haujlwm hauv cheeb tsam yuav tsum tau txais kev txhawb nqa los ntawm Charpy V- qhov ntsuas qhov cuam tshuam tsis yog los ntawm kev xaiv qib ib leeg. Qhov twg sub- xoom kev pabcuam tsis tuaj yeem zam tsis tau, kev rwb thaiv tsev, phab ntsa hnyav dua lossis qib nrog qhov ntsuas qhov ntsuas kub tsis tshua muaj zog yog cov lus teb raug.
Surface Treatment thiab Fabrication
Kub-dip galvanizing yog qhov kev tiv thaiv zoo tshaj plaws thiab yog qhov kev xaiv ib txwm muaj rau kev pabcuam sab nraum zoov thiab faus.
Painting muaj tsawg-tus nqi tiv thaiv corrosion nrog ntau cov xim xaiv thiab feem ntau ua ke nrog cov primer tshaj qhov tawg-cov hlau huv.
Xuab zeb los yog tua blasting tshem tawm zeb nplai thiab xeb thiab muab cov thauj tog rau nkoj profile xav tau ua ntej txheej.
Blackening ua rau nyias nyias oxide zaj duab xis uas tiv thaiv xeb thaum ua kom zoo li xim hlau.
Epoxy txheej los yog yas qhwv yog xaiv rau cov av txhoj puab heev, dej los yog tshuaj lom neeg.
Kev txiav feem ntau yog ua los ntawm saw, plasma lossis abrasive disc. Vim hais tias qib yog mos, weld npaj yog ncaj nraim, thiab ntau cov txheej txheem arc tuaj yeem siv nrog cov khoom siv roj carbon zoo tib yam. Kev tswj tsis sib haum xeeb tseem ceeb tshaj qhov sib piv ntawm lub zog thaum vuam nyias - phab ntsa Q215 raj.
FAQ
Q: Cov tshuaj muaj pes tsawg leeg ntawm Q215 steel yeeb nkab yog dab tsi?
Cov ntsiab lus tseem ceeb yog carbon txog 0.15%, silicon txog 0.30%, manganese mus txog 0.65%, phosphorus mus txog 0.045% thiab sulfur mus txog 0.045% nyob rau hauv GB / T 700. Cov ntsiab lus carbon tsawg muab cov yas zoo thiab weldability, manganese ntxiv rau kev txwv ntawm sulfur thiab sulphate. tiv thaiv txias brittleness thiab kub shortness.
Q: Dab tsi yog cov khoom siv ntawm Q215 steel yeeb nkab?
Qhov ntsuas qhov siab tshaj plaws yog 215 MPa thiab lub zog tensile ntau yog 335-450 MPa, nrog elongation tsawg kawg yog 26%. Cov txiaj ntsig no tso cov qib hauv lub teeb- lub luag haujlwm kev pabcuam xws li cov ncej, cov kav dej thiab tsis yog- qhov tseem ceeb thauj khoom- cov kabmob, es tsis yog lub luag haujlwm siab lossis siab kub.
Q: Dab tsi yog qhov txawv ntawm Q215 thiab Q235 steel yeeb nkab?
Q215 caps carbon ntawm 0.15% tiv thaiv 0.22% rau Q235, yog li nws lub zog tawm los qis dua, 215 MPa tiv thaiv 235 MPa, thaum elongation thiab formability zoo dua. Q215 haum rau cov qauv teeb nrog lub zog me me, thiab Q235 haum rau nruab nrab -load daim ntawv thov xws li lub tsev thav duab. Qhov qis dua carbon sib npaug ntawm Q215 kuj txo qhov kev pheej hmoo ntawm kev sib tsoo, thiab ob qib tuav cov nqi sib tshooj.
Q: Puas yog Q215 steel yeeb nkab haum rau qis - qhov kub thiab txias?
Q215 khaws cov khoom siv kho kom zoo ntawm qhov kub thiab txias siab tshaj li ntawm -20 degree, uas npog feem ntau thaj tsam. Hauv qab no qhov kub ntawm qhov cuam tshuam qhov hnyav poob qis thiab qhov tawg tawg ua rau muaj kev pheej hmoo, yog li txias- cov phiaj xwm hauv cheeb tsam yuav tsum suav nrog qis- qhov ntsuas kub ntawm qhov ntsuas kub tiag tiag. Rau polar- kev pabcuam hauv chav kawm ib qib nrog kev lees paub qhov ntsuas kub tsis zoo yuav tsum tau xaiv lub zog.
Q: Cov kev kho deg twg siv rau Q215 steel yeeb nkab?
Kub-dip galvanizing yog qhov ntau tshaj plaws thiab muab kev tiv thaiv corrosion ntev ntev rau kev siv sab nraum zoov. Painting yog pheej yig thiab muab kev tiv thaiv thiab zoo li; sandblasting tshem tawm nplai thiab npaj qhov chaw rau txheej; blackening tsim cov yeeb yaj kiab oxide tuab uas tiv thaiv xeb thaum khaws cov hlau tiav. Epoxy txheej los yog yas qhwv yog siv rau qhov chaw uas muaj tshuaj lom neeg los yog av raug mob hnyav.
