It is clear and definite that the speed grade of the differential dual drive sy-stem is good enough to meet the demands for free tension continuous rolling.

从理论与实践上，明确了差动调速系统的速度品质是好的，满足了自由张力小型连轧工艺的要求。

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The invention adopts a pass-free flat roller to replace a rough rolling pass roller of the prior art and realizes non-groove rolling of the high speed wire rod roughing mill group.

本发明用无孔 型平轧辊代替现有技术的粗轧孔型轧辊实现高速线材粗轧机组无槽轧制。

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