ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2010, Vol. 31 ›› Issue (2): 69-70.

• 组织和性能 • 上一篇    

非调质36Mn2V石油套管钢连铸坯的高温延塑性

何庆文1,2,  张博1, 王福明1, 王广连1,2   

  1. 1北京科技大学冶金与生态工程学院,北京100083;
    2莱芜钢铁股份有限公司特殊钢厂,莱芜271104
  • 收稿日期:2009-10-26 出版日期:2010-04-01 发布日期:2022-11-17
  • 作者简介:何庆文(1968・),男,博士研究生,高级工程师,电弧炉炼钢、连铸工艺技术研究及产品质量控制。

High Temperature Ductility of Casting Bloom of Non-Quenched and Tempered Steel 36Mn2V for Casing Pipe

He Qingwen1,2, Zhang Bo1, Wang Fuming1 , Wang Guanglian1,2   

  1. 1 School of Metallurgical and Ecological Engineering, University of Science and Technology, Beijing 100083 ;
    2 Special Steel Works, Laiwu Iron and Steel Co Ltd, Laiwu 271104
  • Received:2009-10-26 Published:2010-04-01 Online:2022-11-17

摘要: 采用Gleeble-1500热模拟试验机,研究了石油套管用V微合金化非调质钢36Mn2V(%:0.36C、1.54Mn、0.12V、0.008~0.010N)260 mm×300 mm连铸方坯的650~1350℃的延塑性。结果表明,36Mn2V钢的零强度温度(ZST)为1440℃,零塑性温度(ZDT)为1400℃;36Mn2V钢在熔点(Ts)到650℃温度区间内存在两个脆性温度区,第Ⅰ脆性温度区为熔点~1350℃,第Ⅲ脆性温度区为925~650℃,因此,该钢的矫直温度应控制在925℃以上;由1350℃至试验温度(650~1050℃)的冷却速度(3~8℃/s)对36Mn2V钢高温延塑性没有影响。

关键词: 非调质钢36Mn2V, 石油套管, 连铸坯, 高温延塑性

Abstract: The ductility of 260 mm x 300 mm casting bloom of V microalloying non-quenched and tempered steel 36Mn2V (% : 0. 36C, 1. 54Mn, 0. 12V, 0. 008 ~0. 010N) for casing pipe at 650 ~ 1 350 °C has been studied by using Gleeble-1500 thermal simulator. Results show that the zero strength temperature (ZST) and zero ductility temperature (ZDT) of steel 36Mn2V are respectively 1 440 °C and 1 400 °C. ; there are two zones for steel 36Mn2V at melting point Ts ~650 °C , i. e. brittle zone I ,Ts〜1 350 T and the brittle zone Ⅲ, 925 〜625 °C, therefore the straightening temperature for bloom during casting should be more than 925 °C ; the cooling rate (3 ~8 °C/s) from 1 350 °C to test temperature 650 ~ 1 050 °C has no-influence on hot ductility of the steel.

Key words: Non-Quenched and Tempered Steel 36Mn2V, Oil Casing, Continuous Casting Bloom, High Temperature Ductility