一种高强塑性帘线钢及其制备方法
By using precise alloy design and cooling control, combined with low-temperature heat treatment, the interface structure of pearlitic cord steel was optimized, solving the problem of insufficient plasticity in ultra-high strength cord steel and achieving a synergistic improvement in both strength and plasticity.
CN122147007BActive Publication Date: 2026-07-17ZHONGBEI UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHONGBEI UNIV
- Filing Date
- 2026-05-11
- Publication Date
- 2026-07-17
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Figure CN122147007B_ABST
Abstract
本申请属于帘线钢制备技术领域，具体涉及一种高强塑性帘线钢及其制备方法，制备方法包括以下步骤：S1、获取帘线钢铸坯，对帘线钢铸坯进行加热、轧制、冷却得到帘线钢线材，帘线钢线材的组织为平均片层间距为95‑100nm的珠光体组织；S2、对帘线钢线材进行冷拉拔得到帘线钢丝材，冷拉拔的总面缩率≥85%；S3、对帘线钢丝材进行热处理得到高强塑性帘线钢，热处理的保温温度为280‑300℃。本申请通过合金成分与冷却协同设计获得珠光体基体，并进行严重塑性变形构建高缺陷密度的初始状态，采用低温热处理利用前置变形提供的扩散通道，驱动界面碳原子的短程扩散以构建成分梯度，驱动微合金元素的扩散以调控纳米析出相，实现界面增塑与析出补强的协同。
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