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Features of Structure and Property Formation of Rolled Coil for Wire Manufacture

机译：电线用轧制卷材的组织和性能形成的特征

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摘要

Results are given for research to develop scientifically based process solutions to improve quality characteristics of rolled coils cooled in a two-stage Stelmor line ensuring effective metal microstructure and processing properties for wire and wire products. An increase in welding rod ductility is achieved by limiting the steel's strengthening element content, effective application of the boron to nitrogen ratio, and optimization of two-stage cooling, ensuring the formation of large ferrite grain size with rolling heat during isothermal soaking, thereby minimizing the formation of non-ductile structural components (bainite and martensite). For high-carbon wire rod used in the manufacture of concrete sleepers, it is necessary to achieve the fine pearlite structure of point 1 (GOST 8233-56) that is provided by alloying steel with boron, vanadium, and/or chromium, and also use of fan cooling. This structure is the optimum from the point of view of metal ductility and strength.
机译：给出了研究结果，以开发基于科学的工艺解决方案，以改善在两级Stelmor生产线中冷却的轧制卷材的质量特性，从而确保有效的金属微结构和线材和线材产品的加工性能。通过限制钢的强化元素含量，有效使用硼氮比以及优化两阶段冷却，确保等温均热过程中轧制热形成大的铁素体晶粒尺寸，可以提高焊条的延展性。非延展性结构成分（贝氏体和马氏体）的形成。对于用于制造混凝土轨枕的高碳线材，有必要实现点1（GOST 8233-56）的精细珠光体结构，该结构是通过将钢与硼，钒和/或铬合金化而获得的使用风扇冷却。从金属延展性和强度的观点来看，这种结构是最佳的。

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