Cov Qauv Tseem Ceeb: Q295NH Tsawg-Tsuas Muaj Kev Nyuaj Siab Toughness
Cov hlau muaj peev xwm tiv taus qhov kub thiab txias yog nyob ntawm nws qhov kev cuam tshuam toughness-ua haujlwm rau cov pob txha tawg thaum muaj kev ntxhov siab hauv qhov txias. Rau Q295NH:
Qhov yuav tsum tau muaj tus qauv: GB/T 4171 mandates qhov tsawg kawg nkaus Charpy V-notch cuam tshuam lub zog ntawm Greater los yog sib npaug rau 34J ntawm -20℃. Qhov no txhais tau tias nws khaws cov ductility thiab zam kev tawg ntawm lossis siab dua -20 degree.
Kev txwv: qis dua -20 degree, nws qhov cuam tshuam toughness poob sharply. Cov hlau ua nkig, ua rau muaj kev pheej hmoo ntawm kev tawg hauv kev thauj khoom lossis kev tsim khoom (xws li, vuam, khoov).
Q295NH Kev Tsim Nyog: Los ntawm qis-Tub kub
Tsawg- qhov kub thiab txias ib puag ncig sib txawv hauv qhov hnyav- ntawm no yog li cas Q295NH ua tau zoo, nrog cov kev taw qhia siv tau rau txhua qhov xwm txheej:
1. Tsim nyog: Kub qis qis (0℃txog -10 degree)
Tej yam xwm txheej: Lub caij ntuj no txias nyob rau thaj tsam huab cua (piv txwv li, feem ntau ntawm Tebchaws Europe, North America lub xeev yav qab teb).
Kev ua tau zoo: Khaws tag nrho lub zog thiab ductility. Tsis xav tau kev tiv thaiv ntxiv rau cov ntawv thov siv.
Pom zoo siv: Sab nraum zoov guardrails, cladding, thiab lub teeb structural Cheebtsam.
2. Conditionally haum: Nruab nrab Tsis tshua muaj kub (-10℃rau -20 degree)
Tej yam xwm txheej: Lub caij ntuj no txias nyob rau hauv cov cheeb tsam continental (xws li, Central Europe, sab qaum teb North America).
Kev ua tau zoo: Khaws cov khoom siv tau zoo, tab sis yuav tsum muaj kev tiv thaiv me me kom tsis txhob muaj kev pheej hmoo.
Kev tiv thaiv: Preheat rau 80-120℃ua ntej vuam (tiv thaiv HAZ brittleness); tsis txhob hnyav hnyav loads thaum txias heev.
3. Tsis tsim nyog: Qhov kub thiab txias (hauv qab -20 degree)
Tej yam xwm txheej: Cov cheeb tsam Arctic, sab qaum teb Siberia, lossis thaj chaw uas muaj qhov txias txias rau lub sijhawm ntev-20 degrees.
Kev pheej hmoo: Brittle puas, txawm nyob rau hauv lub teeb loads. Vuam los yog tsim nyob rau hauv cov kub no yuav luag yeej ua rau tawg.
Lwm txoj: Xaiv qis- kub- cov hlau tsis muaj zog (piv txwv li, Q355NH nrog -40℃cuam tshuam qhov ntsuas) lossis ntxiv nickel-alloyed Corten Steel.
Tswv yim tswv yim rau qis-Tsuas siv Q295NH
Tshawb xyuas Cov Ntawv Qhia Txog Kev Nyuaj Siab: Thaum yuav khoom, thov daim ntawv pov thawj kuaj pom zoo tshaj lossis sib npaug rau 34J cuam tshuam lub zog ntawm -20 degree.
Zam Txias Fabrication: Tsis txhob khoov, txiav, lossis vuam Q295NH thaum kub saum npoo qis dua -10℃(preheat ua ntej).
Corrosion + Tsawg-Temp Synergy: Hauv thaj chaw muaj daus / dej khov, tshem cov ntsev tso tawm sai sai- ntsev ua kom muaj zog corrosion thiab txo qis- qhov kub thiab txias.
Hauv cov ntsiab lus, Q295NH Corten Steel yog txhim khu kev qha rau me me mus rau nruab nrab qis - qhov kub thiab txias (-20℃txog 0 degree) nrog kev ceev faj yooj yim. Nws tsis haum rau qhov txias txias hauv qab -20 degree, qhov twg brittle fracture yuav nce sharply. Los ntawm kev sib piv nws mus rau qhov kub thiab txias thiab ua raws li cov kauj ruam tiv thaiv yooj yim, koj tuaj yeem ua kom nws ruaj khov hauv cov dej txias sab nraum zoov.
