Txawv: Qhov qis dua ntawm qhov tawm ntawm lub zog ntawm Q235 yog 235 MPa, thiab qhov qis dua ntawm qhov tawm ntawm lub zog ntawm Q345 yog 345 MPa (lub ntsiab lus Q yog "paib" hauv Suav cov cim, qhov txiaj ntsig tom kawg sawv cev qis dua ntawm yield zog) 2. Cov ntsiab lus alloy ntawm ob yog sib txawv: Q235 yog cov pa roj carbon zoo tib yam steel, Q345 yog cov hlau tsis tshua muaj hlau
Q235 yog cov pa roj carbon txheej txheem steel, piv nrog qub qauv GB700-79 qib A3 thiab C3
Q345 yog cov-hlau tsawg cov qauv txheej txheem steel, piv nrog cov qauv qub 1591-88 12MnV, 16Mn 16MnRE, 18Nb, 14MnNb
Raws li kev ua tau zoo thiab daim ntawv thov mus,
Q235 - Cov ntu ntawm cov hlau, carburized lossis cyanide qhov chaw nrog cov tub ntxhais lub zog uas tsis muaj qhov yuav tsum tau, khi pas nrig, txuas cov pas nrig, nuv, txuas ntxiv, rub tawm thiab cov txiv ntoo, lub tes tsho, shaft thiab welded qhov chaw
Q345 - Muaj cov cuab yeej ua tau zoo, cov ntsuas kub tsis tshua zoo, zoo yas thiab weldability, siv tau raws li nruab nrab thiab qis nkoj siab, roj tso tsheb, tsheb, cranes, mining tshuab, chaw nres tsheb fais fab, txuas hniav thiab lwm cov qauv uas ntim cov khoom hnyav, cov khoom siv kho tshuab, cov qauv vaj tsev 、 Cov qauv hlau dav dav, kub dov los yog qhov ib txwm tshwm sim, tuaj yeem siv rau ntau cov qauv hauv thaj chaw txias saum -40 ℃
