Tailored Casting and Hot Rolling Temperatures for the Preparation of Hot Stamping Steel Thin Strip

Renyi Yang, Wanlin Wang, Chenyang Zhu, Jie Zeng
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Abstract

Strip casting casts molten steel into thin strips, enabling direct hot rolling to produce products. A typical hot stamping steel thin strip was made by a strip casting simulator under tailored casting and hot rolling temperatures. The casting strip showed improved surface quality at a higher casting temperature (1597 °C) and a lower rolling temperature (900 °C), achieving 1275 MPa tensile strength with 12.3 pct elongation due to refined austenite grains transforming to martensite.

Abstract Image

用于制备热冲压钢薄板的定制铸造和热轧温度
带钢铸造将钢水浇铸成薄钢带,然后直接进行热轧生产产品。带钢铸造模拟器在定制的铸造和热轧温度下制造了典型的热冲压薄钢带。在较高的铸造温度(1597 °C)和较低的轧制温度(900 °C)下,铸造钢带的表面质量得到改善,由于精奥氏体晶粒转变为马氏体,抗拉强度达到 1275 兆帕,伸长率为 12.3%。
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