低屈服强度微碳钢冷轧带钢的生产实践  

Production practice of low yield strength mico-carbon cold-rolled sheet

作　　者：于洋[1] 王畅[1] 王林[1] 胡燕慧[1] 陈瑾 王明哲 

机构地区：[1]首钢技术研究院,北京100043 [2]首钢股份有限公司迁安钢铁公司,河北迁安064404

出　　处：《轧钢》2017年第1期66-69,共4页Steel Rolling

摘　　要：针对汽车冲压零部件对冷轧带钢提出的低屈服强度、高伸长率、低成本的要求,采用降低钢中碳质量分数至0.010%~0.030%、适当添加B元素(质量分数0.001 5%~0.002 5%)的微碳钢,并采取U形卷取温度控制、高温卷取和连续退火等措施,微碳钢成品钢卷屈服强度下降到180 MPa以下的占比达95%以上,产品性能满足汽车零部件冲压要求。On account of the demands of low yield strength, high elongation and low cost for the cold-rolled sheet used for the auto stamping parts,a micro-carbon steel strip was developed by reducing carbon mass fraction to 0. 010 %0 0. 030%, adding B element（mass fraction of 0. 001 5 % -0. 002 5%）, and taking the process measures of U-shaped coiling temperature control, high temperature coiling, continuous annealing, This strip could meet the demands of auto stamping parts, which the yield strength of more than 95% hot-rolled products was below 180 MPa.

关 键 词：微碳钢 B元素 U形卷取温度控制 连续退火 力学性能 

分 类 号：TG335.56[金属学及工艺—金属压力加工]