利索-全球专利检索

  1. 登录
  2. 注册
发明公开
CN102888560A 一种大厚度海洋工程用调质高强度钢板及其生产方法 失效 - 权利终止

一种大厚度海洋工程用调质高强度钢板及其生产方法
摘要：
本发明属于钢铁冶炼技术领域，具体公开了一种大厚度海洋工程用调质高强度钢板及其生产方法。大厚度海洋工程用调质高强度钢板是由以下重量百分比的组分熔炼而成：C：0.15%～0.17%，Si：0.25%～0.50%，Mn：1.45%～1.60%，P≤0.012%，S≤0.005%，Ni：0.35%～0.45%，Nb：0.02%～0.04%，Al：0.020%～0.040%，V：0.060%～0.075%，Ti：0.010%～0.020%，余量为Fe和不可避免的杂质。本发明钢板的最大厚度为140mm，该钢板的生产方法为：冶炼→LF/VD精炼→模铸→加热→轧制→热堆垛→热处理→成品钢板。采用本发明的方法所生产的钢板具有纯净度较高、强度高、-40℃冲击功良好、Z向断面收缩率较高以及焊接性能好等特点，可广泛用于海洋工程，应用前景广阔。
摘要（英）：

The invention belongs to the technical field of steel and iron smelting, and particularly discloses a large-thickness quenched and tempered high-strength steel plate for ocean engineering and a production method thereof. The large-thickness quenched and tempered high-strength steel plate for ocean engineering is formed by smelting the following components in percentage by weight: 0.15-0.17% of C, 0.25-0.50% of Si, 1.45-1.60% of Mn, at most 0.012% of P, at most 0.005% of S, 0.35-0.45% of Ni, 0.02-0.04% of Nb, 0.020-0.040% of Al, 0.060-0.075% of V, 0.010-0.020% of Ti and the balance of Fe and inevitable impurity. The maximum thickness of the steel plate is 140 mm. The production method of the steel plate comprises the following steps: smelting, performing LF/VD refinement, performing die casting, heating, rolling, performing heat piling, and performing heat treatment to obtain the finished steel plate product. According to the invention, the steel plate produced by the method has the characteristics of high purity, high strength, favorable -40 DEG C impact energy, high Z-direction percentage of area reduction, good welding performance and the like, and can be widely used for ocean engineering, thereby having broad application prospects.

公开/授权文献
0/0