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Development of Vanadium Microalloyed High Strength Hot Strip For Production With Reduced Rolling Forces

机译：钒微合金化高强度热轧带材的开发，轧制减少生产

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For high strength steels used in large quantities by the construction, mechanical engineering, transport and related industries, it is critical to optimise the chemical composition and processing conditions in order to maximise output and minimise costs, while still maintaining adequate mechanical properties and weldability. The objective of this project was to develop a new vanadium microalloyed HSLA grade offering reduced production costs and/or increased productivity by decreasing reheating temperature and rolling forces. The investigation was carried out in collaboration with a leading European steelmaker and consisted of thermodynamic modelling, and prediction of mechanical properties and rolling forces, followed by laboratory studies and industrial rolling trials. The results show that rolling forces were reduced by approximately 10% in the vanadium treated steel compared with an equivalent niobium treated steel using conventional reheating temperature. When the reheating temperature was reduced by 30°C, rolling forces were 5% lower in the roughing mill and 8% lower during finishing. During accelerated rolling, with reduced reheating temperature and residence time, finish rolling forces were still reduced by 5%. These findings confirm the relative ease of use of vanadium bearing HSLA steels, compared with equivalent niobium steels, and provide a better understanding of the potential for reducing costs and increasing productivity.
机译：对于施工，机械工程，运输和相关行业大量使用的高强度钢，优化化学成分和加工条件至关重要，以最大限度地提高产量并最大限度地减少成本，同时保持足够的机械性能和可焊性。该项目的目的是开发一种新的钒微合金HSLA级，通过减少再加热温度和轧制力来提高生产成本和/或提高生产率。该调查是与欧洲领先的钢铁制造商合作进行的，包括热力学建模，以及对机械性能和滚动力的预测，然后是实验室研究和工业滚动试验。结果表明，与使用常规再加热温度的等效铌处理的钢相比，轧制力在钒处理钢中减少了大约10％的10％。当再加热温度降低30℃时，粗轧机中轧制力较低，结束过程中的8％降低。在加速轧制期间，通过降低的再加热温度和停留时间，结束轧制力仍然减少5％。这些发现证实了与等效铌钢相比的含钒HSLA钢的相对易用性，并提供了更好地理解降低成本和提高生产率的可能性。

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