Properties,Microstructures and Precipitate Morphology of Hot-rolled Interstital-Free(IF)Steel Sheets

In order to simplify production process and to decrease production cost of thicker cold-rolled iF steel sheets for deep drawing applications, a new hot-rolled IF steel sheet is developed through hot-rolling in or region. In this paper, properties, microstructures and precipitate morphology of hot-rolled iF steel sheets are described..

FTSC工艺薄板坯连铸SPHD钢结晶器保护渣的研究

本文根据SPHD的钢种特性和FTSC薄板坯连铸机的工艺技术特点,分析了浇注SPHD钢的结晶器保护渣应具备的理化指标。介绍了唐钢低碳SPHD钢结晶器保护渣的开发情况。

SPHD热轧板热轧卷取温度的研究

针对国丰钢铁公司热轧薄板厂层流冷却区的特点,设计了4种不同的卷取温度,研究了卷取温度对热轧板组织和性能的影响,并进行了模拟冷轧退火验证试验。结果表明,在620℃卷取时,SPHD热轧板具有最佳的力学性能,钢板的屈服强度为265MPa,抗拉强度为350MPa,伸长率A50为45.1%,应变硬化指数n值为0.24。