[1]曲之国,杨志强,邴 纯,等.正火X60N管线钢的生产实践[J].焊管,2019,42(12):28-32.[doi:10.19291/j.cnki.1001-3938.2019.12.006]
 QU Zhiguo,YANG Zhiqiang,BING Chun,et al.Practice of Normalized X60N Pipeline Steel Production[J].,2019,42(12):28-32.[doi:10.19291/j.cnki.1001-3938.2019.12.006]
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正火X60N管线钢的生产实践()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
42
期数:
2019年第12期
页码:
28-32
栏目:
应用与开发
出版日期:
2019-12-28

文章信息/Info

Title:
Practice of Normalized X60N Pipeline Steel Production
文章编号:
10.19291/j.cnki.1001-3938.2019.12.006
作者:
曲之国杨志强邴 纯张德勇
五矿营口中板有限责任公司 产品发展处,辽宁 营口 115000
Author(s):
QU Zhiguo YANG Zhiqiang BING Chun ZHANG Deyong
Minmetals Yingkou Medium Plate Co., Ltd., Department of Product Development, Yingkou 115000, Liaoning, China
关键词:
X60N管线钢热处理工艺显微组织力学性能
Keywords:
X60N pipeline steel heat treatment process microstructure mechanical properties
分类号:
TG335.11
DOI:
10.19291/j.cnki.1001-3938.2019.12.006
文献标志码:
B
摘要:
为了满足正火X60N管线钢的韧性要求,对管线钢成分进行了设计,选择适当的轧制及热处理工艺,对处理后的钢板进行性能、组织分析。分析结果表明,通过正火后回火的工艺处理,钢板组织转变为铁素体+细小第二相沉淀+退化珠光体类型,钢板屈服强度提升,抗拉强度降低,韧性提升,批量生产的钢板屈服强度均值为431 MPa,抗拉强度为536 MPa,-20 ℃冲击功≥186 J,10 ℃ DWTT剪切面积≥95%;采用低C高Mn + Nb、V微合金化的成分设计,配合轧制+正火(+回火)的热处理工艺,生产出7.6~16 mm规格以热处理状态交货的X60N管线钢,其综合力学性能优异,满足客户订货技术要求。批量生产的钢板经JCOE制管后综合性能优良,满足钢管项目使用要求。
Abstract:
In order to meet the toughness requirements of the normalizing X60N pipeline steel,the composition of the pipeline steel was designed,the appropriate rolling and heat treatment process were selected,and the performance and microstructure of the treated steel plate were analyzed. The results show that the microstructure of the steel plate is transformed into the type of the ferrite+fine second phase precipitation+degraded pearlite through normalizing and then tempering. The yield strength of the steel plate increases,the tensile strength decreases,and the toughness increases. The yield strength of the mass-produced steel plates is 431 MPa,the tensile strength is 536 MPa,CV≥186 J at -20 ℃,and SA≥95% at DWTT at 10 ℃. Adopting the composition design of the low C and high Mn+Nb and V microalloying,combined with the heat treatment process of the rolling+normalizing(+tempering),X60N pipeline steel plate with 7.6~16 mm wall thickness delivered in the heat treatment is produced,which has the excellent comprehensive mechanical properties and can meet the technical requirements of the customer ordering. The mass-produced steel plate has good comprehensive performance after the pipe is made by JCOE,which can meet the requirements of the steel pipe project.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2019-04-11
作者简介:曲之国(1983—),男,硕士学位,五矿营口中板有限责任公司产品发展处技术主管,主要从事管线钢开发及技术管理工作。
更新日期/Last Update: 2020-01-16