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The Development of Steel Band Feeding for HSLA Heavy Plates

机译：HSLA厚板钢带进料的发展

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摘要

Advanced technology has been developed for the production of HSLA steel heavy plates over 60 mm thick made from concast slabs. This technology provides steel band feeding to the concaster mould liquid pool by a specially designed device. The developed technology is a convenient tool for optimization of the casting macrostructure. Minimization of the axial segregation and heavy plate Z-direction mechanical property improvement were realized even if the reduction ratio was less than 2-3. The ductility in the Z-direction of heavy plates was increased by 15-20%, and the toughness of heavy plates was increased by 1.5-2.0 times. High level yield (97.5-99.5%) was reached for heavy plates by the implementation of steel band feeding on the basis of ultrasonic tests using European standard SEL 072 class 1-2. Therefore, steel band feeding is an appropriate alternative to soft reduction and electromagnetic stirring technologies for heavy HSLA steel plates.
机译：已经开发出了先进技术，用于生产由连铸坯制成的厚度超过60 mm的HSLA钢厚板。这项技术通过特殊设计的设备将钢带送入铸模模具液池。开发的技术是优化铸件宏观结构的便捷工具。即使减小比例小于2-3，也可以使轴向偏析和厚板Z方向的机械性能最小化。厚板在Z方向的延展性提高了15-20％，厚板的韧性提高了1.5-2.0倍。通过采用欧洲标准SEL 072 1-2级进行的超声波测试，通过钢带进给，实现了厚板的高产量（97.5-99.5％）。因此，对于重型HSLA钢板，钢带送入是软压下和电磁搅拌技术的合适替代品。

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