用于异型钢丝生产的1000MPa级高碳钢盘条及其生产方法

By optimizing the chemical composition and production process of high-carbon steel wire rod, the influence of Widmanstätten and banded structures in the wire rod on the deformation capacity of shaped steel wire has been resolved, enabling the production of wire rod with high strength and good deformation capacity, thus meeting the production requirements of shaped steel wire.

CN116695012BActive Publication Date: 2026-07-17ANGANG STEEL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ANGANG STEEL CO LTD
Filing Date
2023-05-30
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies have failed to effectively address the impact of Widmanstätten and banded structures in wire rods on the deformation capacity during the production of shaped steel wires, leading to the problem of easy cracking of the steel wires.

Method used

By optimizing the chemical composition and production process of high-carbon steel wire rod, controlling the content of elements such as carbon, silicon, manganese, phosphorus, sulfur, nitrogen, oxygen, niobium, and cobalt, and through continuous casting, heating, rolling, and cooling processes, the sorbite content in the wire rod is ensured to reach 80-90%, Widmanstätten and banded structures to grade ≤1.0, and the pearlite structure is refined to meet the production requirements of special-shaped steel wire.

Benefits of technology

It achieves a tensile strength of 980-1060MPa, a reduction of area of ​​30-36%, a sorbite content of 80-90%, and controls Widmanstätten and banded structures at low levels, meeting the deformation capacity requirements for the production of special-shaped steel wires and reducing the risk of steel wire cracking.

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Abstract

本发明公开了一种用于异型钢丝生产的1000MPa级高碳钢盘条及其生产方法。盘条化学成分：[C]0.70％～0.74％，[Si]0.22％～0.27％，[Mn]0.45％～0.52％，[P]≤0.020％，[S]0.0020％～0.015％，[N]≤0.0050％，全氧0.0025％～0.0035％，[Als]0.0015％～0.0025％，[Nb]0.0002％～0.0010％，[Co]0.0003％～0.0010％。生产方法包括钢液冶炼和连铸，连铸坯加热和轧制，盘条轧制，盘条冷却，通过化学成分和工艺控制，盘条抗拉强度980～1060MPa，面缩率30％～36％。盘条魏氏组织≤1.0级，带状组织≤1.0级；盘条珠光体含量达到80％～90％，先共析铁素体尺寸不大于5μm，满足异型钢丝的生产要求。
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