Research and Prodution on Non-Queched-Tempered Steel N80 Φ139.7 mm x 9.17 mm Oil Casing Tube

胡楚江; 邓叙燕; 潘恩宝; 程凯

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Research and Prodution on Non-Queched-Tempered Steel N80 Φ139.7 mm x 9.17 mm Oil Casing Tube

更新时间：2026-01-21

- Research and Prodution on Non-Queched-Tempered Steel N80 Φ139.7 mm x 9.17 mm Oil Casing Tube
- Special Steel Vol. 41, Issue 4, Pages: 19-21(2020)
- 作者机构：
  
  1. 达力普石油专用管有限公司技术中心,沧州,061000
  2. 河北省石油专用管技术创新中心,沧州,061000
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：28 December 2019，
  
  Online First：27 April 2022，
  
  Published：27 April 2020
- 稿件说明：
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胡楚江, 邓叙燕, 潘恩宝, et al. Research and Prodution on Non-Queched-Tempered Steel N80 Φ139.7 mm x 9.17 mm Oil Casing Tube[J]. Special Steel, 2020, 41(4): 19-21.
DOI：

胡楚江, 邓叙燕, 潘恩宝, et al. Research and Prodution on Non-Queched-Tempered Steel N80 Φ139.7 mm x 9.17 mm Oil Casing Tube[J]. Special Steel, 2020, 41(4): 19-21. DOI：

摘要

根据C、Mn、V、N、Ti在微合金化非调质钢中作用

设计了石油套管用非调质N80钢的化学成分;依据实验室炉正火实验数据确定在线正火轧制工艺参数

研制的139.7 mm×9.17 mm非调质N80钢石油套管的组织为铁素体+珠光体组织

屈服强度575～638 MPa

抗拉强度789～840 MPa

伸长率21%～23%

0℃3/4尺寸冲击功39～87J

完全满足API Spec 5CT《油套管规范》(第十版

2018)标准的要求。

Abstract

According to the effect of C

N and Ti in non-quenched-tempered microalloyed steel

the chemical composition of non-quenched-tempered steel N80 oil casing tube is designed. Based on lab furnace normalizing test data

the on-line normalizing rolling process parameters are determined. The microstructure of the non-quenched and tempered N80 steel 139.7 mm x9.17 mm oil casing tube is ferrite + pearlite with the yield strength 575 ~638 MPa

tensile strength 789 ~840 MPa

elongation 21% -23% and 3/4 size impact energy at 0℃ being 39 ~87 J fully to meet the requirements of API Spec 5CT (10th Edition

2018).

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