Q235B steel phaj yog ib hom hlau me me. Lub teb chaws tus qauv GB / T 700-2006 carbon yam ntxwv steel yog txhais kom meej meej. Q235B yog ib qho ntawm feem ntau cov hlau nyob hauv Suav teb. Nws tsis tshua muaj nqi thiab muaj peev xwm ua tau raws li cov kev cai ntawm ntau cov khoom uas muaj kev ua tau tsawg.
Tus so yog li ntawm Q + tus lej + tus qhab nia zoo + tus txheej txheem deoxygenation. Cov xov tooj hlau yog cim nrog "Q", uas sawv cev rau cov kis ntawm cov hlau. Cov duab nram qab no yog cov khoom muaj nqis, thiab chav tsev yog MPa, xws li cov qauv carbon uas nws cov paib kis yog 235 MPa.
Lub cim qhia tias qib zoo thiab deoxygenation txoj kev yuav qhia tau tom qab lub npoo hlau tsim nyog. Cov cim qib zoo yog A, B, C thiab D. Cim ntawm txoj kev deoxygenation: F txhais tawm hlau ntawm ripening; B sawv cev rau cov hlau tawg; Z ua piv txwv dag; TZ yog tus qauv tshwj xeeb uas muaj hlau, uas yuav siv tau los ua ib qho cim, piv txwv tias Z thiab TZ tsis yog tus qauv. Piv txwv li, q235-lo nruab nrab yog qib kawm ntawm pob zeb.
Cov pa roj carbon dioxide, xws li cov txuas npoo av, Cov hlau steel, thiab lwm yam., Yog cov uas muaj cov qauv hauv cov hlau, nrog cov ntawv qhia tias lawv siv appended kawg ntawm cov xov tooj hlau.
Sau: Hnub ci
