首钢长钢热轧带肋钢筋时效研究及应用  

Research and Application on Aging of Hot Rolled Ribbed Steel Bars at Shougang Changgang

作　　者：高红星 桑海宁 牛晓翠 陈煜 Gao Hongxing;Sang Haining;Niu Xiaocui;Chen Yu(Shougang Changzhi Steel&Iron Co.,Ltd.,Changzhi Shanxi 046031)

机构地区：[1]首钢长治钢铁有限公司,山西长治046031

出　　处：《山西冶金》2023年第5期139-140,143,共3页Shanxi Metallurgy

摘　　要：通过对首钢长钢微合金化生产的HRB400E热轧带肋钢筋自然时效3 d、20 d后的屈服强度进行检测,发现采用该工艺生产的钢筋屈服强度呈下降规律,为确保用户在进场检验时获得合格钢筋,首钢长钢的内控标准要求出厂的热轧带肋钢筋屈服强度下限高于430 MPa。Through testing the yield strength of HRB400E hot-rolled ribbed steel bars produced by microalloying at Shougang Changgang after natural aging for 3 and 20 days,it was found that the yield strength of steel bars produced by this process showed a decreasing trend.To ensure that users obtain qualified steel bars during on-site inspection,the internal control standard of Shougang Changgang requires that the lower limit of yield strength of hot-rolled ribbed steel bars produced from the factory is higher than 430 MPa.

关 键 词：HRB400E 热轧带肋钢筋 时效 屈服强度 预警值 

分 类 号：TG156.92[金属学及工艺—热处理]