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发明公开
CN108004466A 建筑混凝土固定件用高强冷硬卷及其制备方法 无效 - 驳回

建筑混凝土固定件用高强冷硬卷及其制备方法
摘要：
本发明属于钢铁冶炼技术领域，具体涉及一种建筑混凝土固定件用高强冷硬卷及其制备方法。针对现有方法生产的钢力学性能和表面质量无法满足建筑混凝土固定件的要求的问题，本发明提供了一种建筑混凝土固定件用高强冷硬卷，其组成为：按重量百分比计，C：0.33～0.38％，Si：0.17～0.37％，Mn：0.80～1.00％，P≤0.025％，S≤0.010％，Als：0.010％～0.060％，余量为Fe和不可避免的杂质。其制备方法为铁水经过转炉初炼、电加热、LF炉处理和保护浇铸等步骤，再经热轧和酸轧制备得到。本发明通过对钢成分的精确控制和冶炼过程的关键参数控制，使得钢坯表面质量优良，不会出现裂纹危险，并且钢的力学性能优异，能够满足建筑混凝土固定件的需求，适宜用在建筑混凝土固定件中。
摘要（英）：

The invention belongs to the technical field of iron and steel smelting, and particularly relates to a high-strength chill hardening roll for building concrete fixing parts and a preparation method thereof. Aiming at solving the problem that the mechanical property and the surface quality of steel produced by an existing method cannot meet the requirements of the building concrete fixing parts, the high-strength chill hardening roll for the building concrete fixing parts comprises, by weight, 0.33-0.38% of C, 0.17-0.37% of Si, 0.80-1.00% of Mn, 0.025% or less of P, 0.010% or less of S, 0.010-0.060% of Als, and the balance Fe and inevitable impurities. The preparation method comprises the steps of converter primary smelting, electric heating, LF treatment, protective casting and the like ofmolten iron, and then hot rolling and acid rolling. By accurately controlling the steel components and controlling the key parameters in the smelting process, the surface of a steel blank is good inquality and has no cracking risk, the mechanical property of the steel is excellent and can meet the requirements of the building concrete fixing parts, and the steel is suitable for being used in thebuilding concrete fixing parts.

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