This paper researches argumentation, structural design and reference coefficient calculation of 1200pinion housing rebuilding when it's applied to 790 first rolling mill.
就1200齿轮座应用到790开坯机上所进行的改造情况作了方案论证，结构设计和参考数计算。
It's proved by our calculation that optimum design of such large-size construction as roiling mill housing is carried on by the OPTSDP, with high efficiency and satisfied results.
计算表明：象轧钢机机架这类大型结构的局部最优设计，采用OPTSDP程序具有较高的效率和得到比较满意的结果。
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