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

何庆文; 张博; 王福明; 王广连

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

更新时间：2026-01-21

- High Temperature Ductility of Casting Bloom of Non-Quenched and Tempered Steel 36Mn2V for Casing Pipe
- Special Steel Vol. 31, Issue 2, Pages: 69-70(2010)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：26 October 2009，
  
  Online First：17 November 2022，
  
  Published：17 November 2010
- 稿件说明：
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何庆文, 张博, 王福明, et al. High Temperature Ductility of Casting Bloom of Non-Quenched and Tempered Steel 36Mn2V for Casing Pipe[J]. Special Steel, 2010, 31(2): 69-70.
DOI：

何庆文, 张博, 王福明, et al. High Temperature Ductility of Casting Bloom of Non-Quenched and Tempered Steel 36Mn2V for Casing Pipe[J]. Special Steel, 2010, 31(2): 69-70. DOI：

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。

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

〜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.

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