For the hardness of S48 and S53 rod surpassing the standard , various factors to affect hardness are studied with their mechanisms , appearing forms and control methods .
针对石钢公司生产的S48和S53棒材硬度超标问题，围绕着影响硬度的各种可能因素的发生机理、表现形式、控制方法进行了研究。
s48