Abstract: With using Cr, V microalloying technology the Φ 14 〜15 mm coil of steel SWRH82B (/% : 0. 79 ~ 0. 82C, 0. 15 ~0. 35Si, 0. 60 ~0. 90Mn, ≤ 0. 025P, ≤ 0. 006S, ≤ 0.015As, 0. 26 ~0. 32Cr, 0.04-0.07V) with tensile strength ml 180 MPa has been developed. The 中14 〜15 mm coil of steel SWRH82B is produced by 100 t BOF-LF refining-160 mm x 160 mm billet casting with mold electromagnetic stirring-billet slow cooling-high speed wire-rod rolling- Stelmor wind cooling process at Shuigang, the sorbite content in structure of coil is up to 95%. The tensile strength of coil is 1 180 ~ 1 270 MPa and the reduction of area of coil is 27. 0% ~37. 5% to meet the requirements of large size and high strength steel strand for mine.

Key words: High Strength Steel SWRH82B, , Φ14 ?15 mm Coil, Cr-V Microalloying, Steel Strand

摘要： 采用Cr、V微合金化技术开发了抗拉强度≥1180 MPa的SWRH82B钢Φ14～15 mm盘条(/%:0.79～0.82C,0.15～0.35Si,0.60～0.90Mn,≤0.025P,≤0.006S,≤0.015As,0.26～0.32Cr,0.04～0.07V)。水钢用100 t转炉-LF精炼-160 mm×160 mm连铸(结晶器带电磁搅拌)-铸坯缓冷-高速线材轧制-Stellmor风冷的工艺流程生产的SWRH82B钢Φ14～15 mm盘条组织的索氏体化率达到了95%。盘条的抗拉强度为1 180～1 270 MPa,断面收缩率为27.0%～37.5%。盘条满足大规格高强度矿用钢绞线的要求。