知搜-全球专利检索

  1. 登录
  2. 注册
发明公开
CN103667910A 具有良好低温冲击韧性的热轧H型钢及其制造方法 失效 - 权利终止

具有良好低温冲击韧性的热轧H型钢及其制造方法
摘要：
本发明公开了一种具有良好低温冲击韧性的热轧H型钢。该钢按质量百分比由如下化学成分组成：C 0.05～0.18%，Si 0.15～0.40%，Mn 1.0～1.50%，V 0.010～0.050%，Nb 0.015～0.050%，Ti 0.005～0.025%，Al≤0.035%，P≤0.020%，S≤0.015%，其余为Fe及不可避免的杂质。本发明还公开了该钢的制造方法。本发明具有成本低廉和工艺简单的特点，制造的成品热轧H型钢具有优良的低温冲击韧性，翼缘1/3处-40℃纵向冲击功大于201J、-60℃纵向冲击功大于109J。
摘要（英）：

The invention discloses hot-rolled H-shaped steel with excellent low-temperature impact toughness. The steel comprises the following chemical components in percentage by mass: 0.05-0.018 percent of C, 0.15-0.40 percent of Si, 1.0-1.50 percent of Mn, 0.010-0.050 percent of V, 0.015-0.050 percent of Nb, 0.005-0.025 percent of Ti, 0-0.035 percent of Al, 0-0.020 percent of P, 0-0.015 percent of S, and Fe and inevitable impurities in balancing amount. The invention further discloses a manufacturing method for the steel. The method has the characteristics of low cost and simple technology, the finished hot-rolled H-shaped steel made through the method has excellent low-temperature impact toughness, the longitudinal impact power at -40 DEG at the one third position of a flange is greater than 201 J, and the longitudinal impact power at -60 DEG at the one third position of the flange is greater than 109 J.

公开/授权文献
0/0