Q690D thick plate produced by ultra fast cooling process and manufacturing method

Disclosed in the present invention is a Q690D thick plate produced by an ultra fast cooling process, related to the technical field of metallurgy, having the following chemical components and mass percentages thereof: C: 0.05%-0.10%, Si: 0.20%-0.50%, Mn: 1.40%-1.80%, P ≤ 0.020%, S ≤ 0.003%, Cr: 0.10...

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Bibliographische Detailangaben
Hauptverfasser:	YAN, QiangJun, JIANG, Hui, HOU, ZhongHua, ZHANG, YiJie, ZHANG, QingHui, JIANG, ZaiWei
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	Disclosed in the present invention is a Q690D thick plate produced by an ultra fast cooling process, related to the technical field of metallurgy, having the following chemical components and mass percentages thereof: C: 0.05%-0.10%, Si: 0.20%-0.50%, Mn: 1.40%-1.80%, P ≤ 0.020%, S ≤ 0.003%, Cr: 0.10%-0.50%, Mo: 0.08%-0.30%, Ti: 0.008%-0.030%, Nb: 0.015%-0.050%, B: 0.0008%-0.0025%, Ceq ≤ 0.43, and the remainder being Fe and unavoidable contaminants. The present invention uses low-carbon and alloying component design, providing a high-strength Q690D steel thick plate, the production process having a simple flow, rapid production rhythm and low cost.