对螺纹钢盘条负偏差轧制技术及控轧控冷对组织性能的影响进行了研究。结果表明：生产的螺纹钢盘条屈服强度平均值为498 MPa,抗拉强度平均值为615 MPa,伸长率平均值为24.11%,轧后螺纹钢盘条边部组织为回火索氏体,晶粒度为13.5级,心部组织为铁素体加珠光体,晶粒度为12.0级,淬透层深度为0.50 mm,该产品的负偏差值可达-5.19%。
The minus tolerance rolling technology to produce hot-rolled ribbed wire rod and the effect of controlled cooling and controlled rolling on the microstructure and properties of the wire rod are described in this paper.The results show that the yield strength of hot-rolled ribbed wire rod is 498 MPa,the tensile strength is 615 MPa,and the elongation is 24.11 %;the edge microstructure of hot-rolled ribbed wire rod after rolling is tempered sorbite and the grain size scale is 13.5;the core microstructure is ferrite-pearlite and the grain size scale is 12.0;the depth of hardening is 0.50 mm and the minus tolerance can be up to-5.19 %.
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