Cold-rolled nyias steel phaj yog cov ntawv luv ntawm cov qauv carbon zoo tib yam steel txias-kuav los tiag phaj, feem ntau hu ua txias phaj. Nws yog ua los ntawm cov pa roj carbon zoo tib yam steel kub-kuav los tiag steel strips, uas yog ntxiv txias-dov rau hauv steel daim hlau nrog ib tug tuab ntawm tsawg tshaj li 4 hli. Txij li thaum dov ntawm chav tsev kub tsis tsim cov hlau oxide nplai, lub phaj txias muaj qhov zoo ntawm qhov zoo thiab qhov tseeb qhov tseeb. Ua ke nrog kev kho annealing, nws cov khoom siv kho tshuab thiab cov txheej txheem kev ua tau zoo yog zoo dua li kub-kuav los tiag nyias steel daim hlau. Nyob rau hauv ntau lub teb, tshwj xeeb tshaj yog nyob rau hauv lub teb ntawm cov khoom siv hauv tsev, nws tau maj mam siv los hloov kub-dov nyias steel daim hlau.
Cov qib siv tau: Q195, Q215, Q235, Q275; Cim npe: Q-cov cai rau qhov taw tes tawm (txwv) ntawm cov pa roj carbon zoo tib yam steel, uas yog tus tsiaj ntawv loj thiab qis ntawm thawj tsab ntawv Suav Pinyin ntawm "Qu"; 195, 215, 235, 255, 275 - feem sawv cev rau qhov tseem ceeb ntawm lawv cov ntsiab lus yield ( txwv), unit: MPa (N/mm2); vim muaj cov khoom siv kho tshuab zoo ntawm Q235 steel xws li lub zog, plasticity, toughness thiab weldability, nws yog ib qho ntawm cov qauv carbon zoo tib yam. Thaum kawg, nws tuaj yeem ua tau raws li cov kev cai siv dav dav, yog li nws cov ntawv thov dav dav heev.
Mark: Dimensional Accuracy-Dimensions-Steel Phaj Ntau Yam Txheem Txias Rolled Steel Phaj: Steel Number-Technical Conditions Standard
Cov cim piv txwv: B-0.5 × 750 × 1500-GB708-88
Cold dov steel phaj: Q225-GB912-89
Keeb kwm: Anshan Hlau thiab hlau, Wuhan Hlau thiab hlau, Baosteel,GNEE STEEL, lwm.
