1, 100MPa-grade high-strength bundling steel and production method thereof

• Main Authors: FENG HUIXIAO, SUN HONGLIANG, TAN WENZHEN, LI YAQIN, WU GUANHUA, LI JIANYING, SONG XIAOJUAN, MA DEGANG, LI BO
• Format: Patent
• Language: Chinese; English
• Published: 08.03.2019
• Subjects: 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

The invention discloses 1, 100MPa-grade high-strength bundling steel and a production method thereof. The 1, 100MPa-grade high-strength bundling steel comprises the chemical ingredients, by mass percentage content, of 0.20 to 0.25 of C, 0.15 to 0.30 of Si, 1.15 to 1.35 of Mn, equal to or smaller than 0.020 of P, equal to or smaller than 0.010 of S, 0.020 to 0.050 of Als, 0.015 to 0.030 of Nb, equal to or smaller than 0.0050 of N, and the balance Fe and unavoidable impurities. The production method comprises the working procedures of steel making, continuous casting, hot rolling, cold rolling and blueing. According to the composition design of the 1, 100MPa-grade high-strength bundling steel, the middle or low content of C is adopted, the regular content of Mn is adopted, a small quantity of Si element and Nb element is added, and on the conditions of reasonably controlling the contents of C, Mn and Si and the alloy cost, through technological control of hot rolling, controlled rollingand controlled cooling, h