摘要：本文通过对一年多的生产检验数据进行统计分析，用回归分析法求出昆钢冷轧薄板St13洛氏硬度和抗拉强度间回归方程式，达到利用洛氏硬度值来预测在一定置信区间相对应的抗拉强度的目的。
Abstract In this paper a Rockwell Hardness-Ultimate strength correlated formula of KISCO produced St13 cold sheet was obtained by regression on the all-year quality test results, which can be applied to predict the ultimate strength by Rockwell hardness in some definite accepting lap
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