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METHOD FOR REFINING THE CRYSTAL GRAIN OF LOW CARBON STEEL THROUGH AN ASYMMETRIC ROLLING METHOD, CAPABLE OF IMPROVING A MECHANICAL PROPERTY BY REFINING FERRITE CRYSTAL GRAIN
METHOD FOR REFINING THE CRYSTAL GRAIN OF LOW CARBON STEEL THROUGH AN ASYMMETRIC ROLLING METHOD, CAPABLE OF IMPROVING A MECHANICAL PROPERTY BY REFINING FERRITE CRYSTAL GRAIN
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机译：通过不对称轧制方法精炼低碳钢的晶体晶粒的方法，该方法可以通过精炼铁素体晶体晶粒来改善机械性能
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摘要
PURPOSE: A method for refining the crystal grain of low carbon steel through an asymmetric rolling method is provided to apply a larger effective stress which is such that compressive stress and shear stress are simultaneously applied to the rolled low carbon steel compared with a symmetric rolling method, thereby improving a mechanical property by refining ferrite crystal grain.;CONSTITUTION: A method for refining the crystal grain of low carbon steel through an asymmetric rolling method asymmetrically hot-rolls an upper and a lower roll in order to improve a mechanical property by refining the ferrite crystal grain of the low carbon steel which contains 0.12 to 0.2 wt% of carbon, passes between the upper and the lower roll, and is hot-rolled. The asymmetric rolling rate of the upper and the lower roll is 30 to 50 %. In the asymmetric rolling method, the size of the upper roll is larger than the size of the lower roll.;COPYRIGHT KIPO 2013;[Reference numerals] (AA) Upper roll; (BB) Low carbon steel; (CC) Lower roll
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