Hom Q235 Carbon Steel

Carbon structural steel Q235 nyob rau hauv GB / T 700-2006 muab faib ua plaub qib A, B, C thiab d raws li metallurgical zoo.

Q235 yog lub cim qib zoo. Cov qib zoo ntawm cov qauv deoxidation cov cim yog a, B, C thiab D. qhov zoo ntawm Qib A yog qhov tsis zoo, thiab qhov zoo ntawm qib D yog qhov siab tshaj. Cov cim ntawm deoxidation txoj kev yog f, B, Z thiab TZ, uas feem ntau sawv cev rau boiling steel, semi tua steel, tua hlau thiab tshwj xeeb tua hlau. Txawm li cas los xij, cov cim ntawm Z thiab TZ tuaj yeem raug tshem tawm hauv hom kev sawv cev. Cov qib sib txawv ntawm Q235A, Q235B, Q235C thiab q235d feem ntau sawv cev rau qhov sib txawv ntawm qhov kub thiab txias. A hais txog tsis muaj kev cuam tshuam, B yog siab dua 20 degrees, C siab dua 0 degrees, D-20 degrees, thiab qhov txawv ntawm a thiab e yog hais txog qhov sib txawv ntawm qhov kub thiab txias hauv lawv kev ua tau zoo. Lawv yog: Q235 qib A, uas tsis tas yuav tsum muaj rau kev sim ua kom tawv nqaij; Q235B yog siv rau qhov kev ntsuam xyuas toughness ntawm qhov kub thiab txias (20 degree); Qib Q235C yog siv rau 0 degree cuam tshuam toughness xeem; Qib Q235D yog siv rau - 20 degree kev cuam tshuam toughness xeem. Charpy V-notch specimens yog siv rau qhov kev ntsuam xyuas toughness. Qhov cuam tshuam toughness index yog Akv. Akv Ntau dua lossis sib npaug ntawm 27j yog xav tau rau qib B, C thiab D steels saum toj no raws li qhov xav tau ntawm qhov kub thiab txias. Ntawm qhov sib txawv qhov kub thiab txias, qhov cuam tshuam tus nqi sib txawv.