[1]朱春生.宝钢中等壁厚低屈强比X70M管线钢板的研发[J].焊管,2018,41(2):14-19.[doi:10.19291/j.cnki.1001-3938.2018.02.004]
 ZHU Chunsheng.Research on X70M Steel Plate with Medium Thickness and Lower Yield Ratio in Baosteel[J].,2018,41(2):14-19.[doi:10.19291/j.cnki.1001-3938.2018.02.004]
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宝钢中等壁厚低屈强比X70M管线钢板的研发()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
41
期数:
2018年第2期
页码:
14-19
栏目:
试验与研究
出版日期:
2018-02-28

文章信息/Info

Title:
Research on X70M Steel Plate with Medium Thickness and
Lower Yield Ratio in Baosteel
文章编号:
10.19291/j.cnki.1001-3938.2018.02.004
作者:
朱春生
 宝山钢铁股份有限公司 制造管理部, 上海 201900
Author(s):
ZHU Chunsheng
 Products & Technique Management Department of Baoshan Iron & Steel Co., Ltd., Shanghai 201900, China
关键词:
X70M管线钢低屈强比析出强化固溶强化
Keywords:
X70M pipeline plate low yield ratio solution strengthening precipitation strengthening
分类号:
TE113.2
DOI:
10.19291/j.cnki.1001-3938.2018.02.004
文献标志码:
A
摘要:
为了获得力学性能优良、经济型的中等壁厚X70M管线钢板,采用C-Mn-Cr-Nb-Ti成分设计,利用低温区精轧+DQ工艺生产了中等壁厚X70M管线钢板,并与传统工艺进行了性能对比。结果显示,新工艺生产的管线钢板拉伸曲线呈现类圆弧顶圆滑过渡形态,钢板抗拉强度较高,屈服强度适中,屈强比控制在较低水平。结果说明,开发的新工艺平衡了析出强化与固溶强化分别对屈服强度与抗拉强度的正贡献关系,提升了钢板抗拉强度,扩大了屈服强度与抗拉强度的差值,解决了中等壁厚X70M管线钢板屈强比偏高的难题。
Abstract:
In order to obtain X70M steel plate with excellent mechanical property and economy, the chemical composition was designed as C-Mn-Cr-Nb-Ti, finish rolling in low temperature zone and directing cooling technology were used for producing the X70M steel plate with medium thickness, and the performance of the steel plate were compared with which made by traditional technology. The results showed that strain-stress curves of the steel plate with new technology appeared round house-roof form, the plate had high tensile strength and moderate yield strength, and the yield ratio was controlled at a relatively low level. The results indicated that the new technology could balance relationship of precipitation strengthening and solution strengthening on yield strength and tensile strength, improve the tensile strength of plate, expand the difference between yield strength and tensile strength, and solve the high yield ratio of X70M steel plate with medium thickness.

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备注/Memo

备注/Memo:

收稿日期: 2017-12-25

作者简介: 朱春生(1984—), 男, 产品工程师, 主要从事管线钢产品质量管理工作。

更新日期/Last Update: 2018-03-22