Compared to cold drawing process, the cold rolling for high precision bars has certain distinct advantages: better surface finish obtained. superior dimension control and higher metal yield.

前言：冷轧法生产的高精度钢材较冷拔法具有更好的表面质量、尺寸精度和高的收得率。

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Traditional mathematic model can not meet the requirement of dimension precision that is needed for tandem cold mill control.

传统的数学模型无法达到冷连轧控制的尺寸精度要求。

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All of the casting dimension precision, surface roughness and material control have reached national standard.

铸件尺寸精度，表面精糙度及材质控制均达到国家标准要求。

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