论文部分内容阅读
文章探讨了支配高强度热轧钢板凸缘拉伸性的冶金学因素,得出脱硫与钢板组织控制的效果。日本京滨等钢铁厂以强化贝氏体组织为主,开发出440～780N/mm~2级凸缘高拉伸性的高强度热轧钢板。开发悬臂类钢板,对汽车行走部分构件的轻量化是有效的。通过炼钢的炉外精炼、热轧高精度的控制冷却技术,使钢板成分和微观组织适宜化。型钢凸缘拉伸性好的高强度热轧钢板的
In this paper, the metallurgical factors that dominate the ductility of high strength hot rolled steel flanges are discussed, and the effects of desulfurization and steel plate structure control are obtained. Japan’s Keihin and other steel mills to strengthen the bainitic structure, developed 440 ~ 780N / mm ~ 2 flange high tensile strength of hot-rolled steel. The development of cantilever steel plate, the car walking part of the lightweight components is effective. Through the furnace refining outside the steel, hot-rolled high-precision control of cooling technology, so that the composition of steel and microstructure appropriate. High-strength hot-rolled steel plate with good flange stretch