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HIGH-TENSION STEEL SHEET AND A MANUFACTURING METHOD THEREOF FOR FORMING A COMPLEX MICROSTRUCTURE THROUGH REGULATION OF ALLOY COMPONENTS AND PROCESSING CONDITIONS
HIGH-TENSION STEEL SHEET AND A MANUFACTURING METHOD THEREOF FOR FORMING A COMPLEX MICROSTRUCTURE THROUGH REGULATION OF ALLOY COMPONENTS AND PROCESSING CONDITIONS
PURPOSE: A high-tension steel sheet and a manufacturing method thereof are provided to obtain a strain-aged impact toughness of 260-310J at tensile strength of 480-580 MPa, yield strength of 400-530 MPa, and the temperature of -40°C.;CONSTITUTION: A method for manufacturing a high-tension steel sheet comprises the steps of: reheating a slab panel, which comprises C of 0.03-0.10wt.%, Si of 0.05-0.50wt.%, Mn of 1.0-1.6wt.%, P of 0.015wt.% or less, S of 0.010wt.% or less, Al of 0.01-0.05wt.%, Nb of 0.005-0.030wt.%, Ti of 0.010-0.020wt.%, and Fe and inevitable impurities of the remaining amount, to 1050-1200°C, rolling the reheated slab panel in a recrystalization range first, rolling the first rolled panel through a plurality of rolling passes in a non-recrystalization range secondly, and cooling the second rolled panel to 450-600°C.;COPYRIGHT KIPO 2013
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机译：目的：提供一种高压钢板及其制造方法，以在抗拉强度为480-580 MPa，屈服强度为400-530 MPa，温度为-40°C时获得260-310J的时效冲击韧性; C .;组成：一种用于制造高压钢板的方法，包括以下步骤：重新加热板坯板，该板坯板的C含量为0.03-0.10wt。％，Si为0.05-0.50wt。％，Mn为1.0- 1.6重量％，P为0.015重量％以下，S为0.010重量％以下，Al为0.01-0.05重量％，Nb为0.005-0.030重量％，Ti为0.010-0.020重量％，和Fe以及剩余量不可避免的杂质，至1050-1200℃，首先在再结晶范围内轧制再加热的板状板，然后在非再结晶范围内通过多个轧制道次轧制第一轧制板，然后将其冷却。第二次轧制面板达到450-600°C; COPYRIGHT KIPO 2013
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