冷轧带肋钢筋工艺参数的正交试验优化设计

由于冷轧带肋钢筋在轧制生产过程中的影响因素多，因素水平复杂，使得产品的两种质量性能指标：抗拉强度和延伸率波动很大，造成在实际生产中常常难以满足产品的质量要求．通过采用正交设计、试验和计算，进行方差分析和F数理统计检验，找出显著影响因素，确定合理的工艺参数配方，从而使产品质量合格率明显地得到提高和稳定．

Optimizing the process variables for making cold-rolled ribbed steel wires and bars by orthogonal test

The product quality of the cold-rolled ribbed steel wires and bars, that is usually manifested by their ultimate tensile strength and elongation, was affected by a number of factors, thus failing to meet the product specifications. The cold- rolling procedures was then optimized to enhance the product quality by employing orthogonal tests, carrying out experiments and calculations, and conducting variance analysis and F statistic examinations. The principal factors affecting the quality were thus determined and an optimal process procedure formulated. As a result, the product quality was markedly improved and stabilized, and the acceptance rate of the product increased.