卷取温度、冷轧压下量对低碳铝镇静钢SPHC力学性能及成形性的影响

特殊钢 ›› 2021, Vol. 42 ›› Issue (6): 29-31.

卷取温度、冷轧压下量对低碳铝镇静钢SPHC力学性能及成形性的影响

飞尚才¹,蒋小霞²

1 青海高等职业技术学院，海东810799;
2 宁夏大学,银川750021

收稿日期:2021-03-08 出版日期:2021-12-23 发布日期:2022-01-03
作者简介:飞尚才(1982-),男，硕士(2011年兰州理工大学),副教授，2005 年东北大学(本科)毕业，轧制技术工艺研究。
基金资助:
宁夏大学人才引进科研启动基金资助项目(BQD2014021)

Effect of Coiling Temperature and Cold Rolling Reduction on Mechanical Properties and Formability of Low Carbon Al Killed Steel SPHC

Fei Shangcai¹ , Jiang Xiaoxia ²

1 Qinghai Higher Vocational & Technical Institute，Haidong 810799;
2 Ning Xia University，Yinchuan 750021

Received:2021-03-08 Published:2021-12-23 Online:2022-01-03

摘要/Abstract

摘要： 研究了低碳铝镇静钢SPHC（/%：0.04C,0.03Si,0.14Mn,0.027Al）572~648 ℃卷取温度以及冷轧压下量65%~75%对该钢700 ℃退火性能的影响。结果表明，在相同的冷轧压下量下，随着卷取温度的增加,强度基本呈现下降趋势,伸长率相对有所上升,n、r值基本呈下降趋势;在相同的卷取温度下，随着冷轧压下量的不断增加，强度呈现下降趋势,伸长率先升后降,n、r值基本呈先升后降的趋势。热轧卷取温度620 ℃，冷轧变形量70%时，700 ℃退火3 mm SPHC钢板性能达到最佳，即抗拉强度286 MPa，屈服强度210 MPa，伸长率43%，n值0.27，r值1.52。

Abstract: The effect of coil temperature 572～648 ℃ and cold rolling reduction 65%~75% on properties of the low carbon aluminum killed steel SPHC(/%:0.04C,0.03Si,0. 14Mn,0.027Al)annealed property at 700 ℃ has been studied. The results show that at the same cold rolling reduction,with the increase of coiling temperature,the strength of steel basically presents a downward trend,the elongation relatively increases,and the n and r values basically show a downward trend; at the same coiling temperature,with the increase of cold rolling reduction,the strength basically presents a downward trend,the elongation first increases and then decreases,and the n and r values basically show first increases and then decreases downward trend. By comparison,the best performance of 3 mm SPHC steel plate annealed at 700 ℃ can be obtained by hot rolling coiling at 620 ℃ and cold rolling deformation 70%,that is tensile strength 286 MPa,yield strength 210 MPa, elongation 43%, n-value 0.27, r-value 1.52.

飞尚才, 蒋小霞. 卷取温度、冷轧压下量对低碳铝镇静钢SPHC力学性能及成形性的影响[J]. 特殊钢, 2021, 42(6): 29-31.

Fei Shangcai , Jiang Xiaoxia . Effect of Coiling Temperature and Cold Rolling Reduction on Mechanical Properties and Formability of Low Carbon Al Killed Steel SPHC[J]. Special Steel, 2021, 42(6): 29-31.