Q: Dab tsi yog cov khoom soj ntsuam tseem ceeb rau kev yuav Q235 phaj?
A: Nrog rau kev soj ntsuam cov ntaub ntawv pov thawj (yield zog, tensile zog, elongation), kev soj ntsuam zoo li (tsis muaj kab nrib pleb, delamination, khawb hnyav), thickness kam rau ua tshuaj ntsuam xyuas, flatness soj ntsuam, thiab tsis pom kev kuaj xyuas cov phaj tuab dua 50 hli.
Q: Dab tsi yog tus qauv ua tiav ntawm Q235 phaj rau kev siv cov qauv siv dav dav?
A: Lub teb chaws tus qauv yogGB / T 700-2006 (Carbon steel qauv), thiab tus qauv tshwj xeeb rau daim hlau yogGB/T 3274-2023 (Hot-rolled steel daim hlau thiab strips rau cov qauv siv).
Q: Q235 puas tuaj yeem siv rau hauv qhov chaw qis - qhov kub thiab txias? Qhov ntsuas kub yog dab tsi?
A: Q235A yog txwv tsis pub siv qis- kub; Q235B yog haum rau ntau dua los yog sib npaug rau 20 degree; Q235C rau ntau dua lossis sib npaug rau 0 degree; Q235D rau ntau dua lossis sib npaug rau -20℃. Nws tsis muaj feem xyuam rau qhov kub thiab txias hauv qab -20 degree, thiab qis-kub steel xws li Q355D / E tau pom zoo.
Q: Dab tsi yog qhov yuav tsum tau kho saum npoo rau Q235 phaj siv sab nraum zoov?
A: Kev tiv thaiv- kev kho corrosion xws li kev tua blasting thiab derusting (txog Sa2.5 qib) yuav tsum tau, ua raws li los ntawm kev txau cov tshuaj tiv thaiv - xeb xim + topcoat (tag nrho cov yeeb yaj kiab thickness Ntau dua lossis sib npaug li 150μm). Kub-dip galvanizing (zinc txheej thickness Ntau dua lossis sib npaug li 85μm) yog siv rau qhov chaw ntub dej hnyav, nrog kev saib xyuas tsis tu ncua.
Q: Q235 puas tuaj yeem welded nrog lwm cov hlau? Cov kev ceev faj yog dab tsi?
A: Nws tuaj yeem txuas nrog qis -carbon / low- alloy steels xws li Q355 thiab 20 # steel. Xaiv qhov sib txuam vuam electrodes raws li cov khoom siv nrog lub zog qis (piv txwv li, E43 series rau Q235 thiab Q355 vuam). Vuam nrog siab - alloy steel lossis siab - carbon steel tsis pom zoo kom tsis txhob vuam sib koom ua ke.