东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2009, Vol. 30 ›› Issue (11): 1582-1585.DOI: -

• 论著 • 上一篇    下一篇

低碳海洋平台用钢E40-Z35的研制

狄国标;刘振宇;刘相华;麻庆申;   

  1. 东北大学轧制技术及连轧自动化国家重点实验室;首钢集团技术研究院;
  • 收稿日期:2013-06-22 修回日期:2013-06-22 出版日期:2009-11-15 发布日期:2013-06-22
  • 通讯作者: Di, G.-B.
  • 作者简介:-
  • 基金资助:
    国家高技术研究发展计划项目(2007AA03Z504);;

On the low-carbon plate steel E40-Z35 for offshore platform

Di, Guo-Biao (1); Liu, Zhen-Yu (1); Liu, Xiang-Hua (1); Ma, Qing-Shen (2)   

  1. (1) The State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, China; (2) Research Institute of Technology, Shougang Group Corporation, Beijing 100041, China
  • Received:2013-06-22 Revised:2013-06-22 Online:2009-11-15 Published:2013-06-22
  • Contact: Di, G.-B.
  • About author:-
  • Supported by:
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摘要： 通过实验室热模拟实验确定工艺参数,开发了连铸坯生产海洋平台用钢E40-Z35的控轧控冷工艺,并进行了现场工业试制.结果表明:采取低碳(w(C)≈0.08%)微合金化成分设计,利用Ca球化处理MnS夹杂物,以及轧制过程中进行高温慢速大压下,未再结晶区开轧温度为900℃,终轧温度为800℃,终冷温度为640℃左右.热轧后产品的-40℃常规冲击和时效冲击吸收功高于200J,厚度方向断面收缩率高于45%,具有良好的抗层状撕裂性能,满足船级社对海洋平台用钢E40-Z35的要求.

关键词: 海洋平台用钢, 低碳钢板, 微合金, 热轧工艺, 热模拟

Abstract: With TMCP (thermo-mechanical control process) parameters determined via hot simulation in lab, the plate steel E40-Z35 for offshore platform was developed and put into pilot-scale production. The results showed that the TMCP includes the characteristics as follows: low carbon content (about 0.08wt%) in microalloying composition design; Ca-spheroidization for MnS inclusions; heavy reduction during the hot-rolling process at high temperature and low speed; starting and finishing the rolling process in non-recrystallized zone at 900°C and 800°C respectively, with workpiece finally cooled at about 640°C; the work done for absorbing conventional and ageing impact acting on the products after hot rolling at -40°C is higher than 200 J; the area reduction along thickness is higher than 45%; high laminar tearing strength. All of these illustrates that the plate steel prepared meets the requirements of any classification societies for the use of offshore platforms.

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