为了降低技改工程费用，决定在立辊轧机现场对机架进行扩孔加工。
To reduce the technological transformation project costs, the legislature decided to roll mill site for reaming rack processing.
液压压下控制系统是冷连轧机控制系统中十分重要的组成部分，它主要实现机架辊缝大小的控制，对于轧制板材的板形有着直接的影响。
HGC system is the important component in the control system of coldroll, it can control the rolling gap size of stand, and direct effect the shape of plate.
而辊系优化推理部分以降低精轧机重量和减少造价为目的，采用约束坐标轮换法对辊系和机架参数进行优化推理，进一步提高设计精度。
To reduce the weight and cost of finishing mill to the minimum, optimum design computes the important parameters with constrained cyclic coordinate method, and precision is improved further.
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