通常轧制生产需要较高的技术水平,轧制生产过程应相当稳定、所以促成在工业中广泛地采用统计方法来检验产品的质量。这些方法都是以采用予测质量指标之间的相关关系为基础的。例如机械性能,(OCT14—34—78),屈服点,极限强度,延伸率等之间的相关关 In general, rolling production requires a higher level of technology and the rolling production process should be fairly stable, thus leading to the widespread adoption of statistical methods in industry to test the quality of the product. These methods are based on the use of the correlation between the measured quality indicators. Such as mechanical properties, (OCT14-34-78), yield point, ultimate strength, elongation, etc. between the correlation between