利索-全球专利检索

  1. 登录
  2. 注册
发明授权
CN108441781B 一种高强耐腐蚀钢筋及其热处理方法 有权

一种高强耐腐蚀钢筋及其热处理方法
摘要：
本发明公开了一种高强耐腐蚀钢筋及其热处理方法，所述高强耐腐蚀钢筋的化学成分组成及质量百分含量如下：C：0.041～0.075%，Si≤0.56%，Mn≤0.45%，Cr：5.2～6.3%，Ni：0.5～0.6%，Mo：0.78～1.1%，Cu：0.13～0.27%，P≤0.05%，Nb：0.01～0.14%，Zn：0.01～0.15%，Sn：0.01～0.14%，其余为Fe和不可避免的杂质；所述热处理方法将需要热处理的高强耐腐蚀钢筋与刚下线的热轧钢筋一同放入缓冷坑中堆冷，堆垛温度≥200℃，堆冷时间≥1小时。本发明钢筋具有较高的耐腐蚀性能和优异的力学性能，生产成本低，应用前景广阔。
摘要（英）：

The invention discloses a high-strength and corrosion-resistant rebar and a heat treatment method thereof. The high-strength and corrosion-resistant rebar comprises, by mass, 0.041-0.075% of C, less than or equal to 0.56% of Si, less than or equal to 0.45% of Mn, 5.2-6.3% of Cr, 0.5-0.6% of Ni, 0.78-1.1% of Mo, 0.13-0.27% of Cu, less than or equal to 0.05% of P, 0.01-0.14% of Nb, 0.01-0.15% of Zn,0.01-0.14% of Sn and the balance Fe and inevitable impurities. According to the heat treatment method, the high-strength and corrosion-resistant rebar needing to be subjected to heat treatment and ahot-rolled rebar which is discharged recently are put in a slow cooling pit for stack cooling together, the stacking temperature is 200 DEG C or higher, and stack cooling time is one hour or longer. The rebar has the high corrosion resistance and excellent mechanical performance, the production cost is low, and the application prospects are wide.

公开/授权文献
0/0