不同规格Q235B热轧带钢室温拉伸试验中下屈服强度重复性的分析

Repeatability of Low Yield Strength of Q235B Hot-rolled Strips in Tensile Tests at Room Temperature

对承钢公司生产的不同规格的Q235B热轧带钢的室温拉伸试中下屈服强度的重复性进行分析,得出结果与生产实际基本相符。重复性是不确定度的内容,主要检测在相同试验条件下的材料的分散性和试验设备及人员等的差异。

The repeatability of low yield strength in room temperature tensile tests of various Q235B hot-rolled strips produced by Chengde Steel was analyzed, the results of which conforming with actual production. As a content of uncertainty, repeatability is to measure the dispersion of material in mechanical properties and difference of test equip ment and personnel under the same test conditions.