振动痕一直是影响冷轧产能发挥及成材率稳定的一个主要原因。
Vibration marks are always a major cause that greatly affects the yield stability and capacity expansion of a cold rolling mill.
施加高频电磁场的铸坯与传统连铸坯相比，表面振动痕深度明显减小，且表面光滑。
Compared it with conventional billet, billet cast with high frequency electromagnetic field, on which depth of surface oscillation mark was decreased remarkably, had a smooth surface.
相反，普通连续铸造锭表面因存在振动痕和亚表面偏析等铸造缺陷，力学性能大大降低。
On the contrary, the surface imperfections, such as oscillation and subsurface segregation etc, found in DCC ingot, cause the mechanical properties drop largely.
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