Exploration and Application of Micro-Alloyed High-Strength H-Beam of European Standard
MA Qiang1��FU Chang-wei2
1. Section Mill of Laiwu Iron and Steel Co., Ltd, Laiwu 271104��Shandong, China 2. Technical Center of Laiwu Iron and Steel Co., Ltd., Laiwu 271104, Shandong,China
Abstract��The micro-alloyed high strength H beam��s chemical composition design of European standard and production process control method of Laiwu Steel are introduced. By selecting reasonable micro-alloying elements, combining with the hot metal pretreatment, low superheat casting and optimization of secondary cooling system in continuous casting process, recrystallization zone controlled rolling and non-recrystallization region combining TMCP technology, so that the product is ensured to have a good organizational structure, high strength and good weldability. The product��s yield strength, tensile strength is more than 360 MPa, 502 MPa, Pcm is less than 0.26%, dimension and surface quality are better than the standard requirements, the overall product quality has reached the international advanced level.
��ǿ������ΰ. ŷ���Ͻ�ǿ��H�ֵĿ�����Ӧ��[J]. �й������ڿ���, 2012, 30(4): 14-18.
MA Qiang1��FU Chang-wei2. Exploration and Application of Micro-Alloyed High-Strength H-Beam of European Standard. Chinese Journal of Iron and Steel, 2012, 30(4): 14-18.
2012, Vol. 30 
