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发明授权
CN107502835B 一种铁塔用高强高韧耐候角钢及其制备方法 有权

一种铁塔用高强高韧耐候角钢及其制备方法
摘要：
本发明提供了一种铁塔用高强高韧耐候角钢及其制备方法。以重量百分比计，该铁塔用高强高韧耐候角钢含有如下成分：C：0.05％‑0.10％，Si：0.15％‑0.40％，Mn：1.10％‑1.50％，P≤0.020％，S≤0.005％，Cr：0.40％‑1.00％，Ni：0.30％‑0.40％，Cu：0.30％‑0.40％，Als≥0.015％，N：0.02％‑0.07％，Nb：0.01％‑0.04％，Ti：0.01％‑0.05％，V：0.03％‑0.08％，其余为Fe。本发明还提供了上述铁塔用高强高韧耐候角钢的制备方法。本发明的优点在于通过合金元素组合设计，获得了强度高、低温高韧性、耐大气腐蚀的铁塔用热轧耐候角钢，且可在现有角钢生产设备条件下批量生产。
摘要（英）：

The invention provides high-strength and high-toughness and weather-proof angle steel for an iron tower and a preparation method of the angle steel. The high-strength and high-toughness and weather-proof angle steel for the iron tower comprises the following components of, by weight, 0.05%-0.10% of C, 0.15%-0.40 of Si, 1.10%-1.50% of Mn, less than or equal to 0.020% of P, less than or equal to 0.005% of S, 0.40%-1.00% of Cr, 0.30%-0.40% of Ni, 0.30%-0.40% of Cu, larger than or equal to 0.015% of Als, 0.02%-0.07% of N, 0.01%-0.04% of Nb, 0.01%-0.05% of Ti, 0.03%-0.08% of V and the balance Fe. The invention further provides the preparation method of the high-strength and high-toughness and weather-proof angle steel for the iron tower. The high-strength and high-toughness and weather-proof angle steel for the iron tower and the preparation method of the angle steel have the advantages that through combined design of alloying elements, the hot-rolled weather-proof angle steel which is high in strength, low in temperature, high in toughness and atmospheric corrosion resistant is obtained, and the angle steel can be in batch production under the condition of existing angle steel production equipment.

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