[1]冯 斌,刘 宇,刘方明.X70级管线钢焊接热裂纹模拟研究[J].焊管,2009,32(1):15-20.[doi:1001-3938(2009)01-0015-06]
 FENG Bin,LIU Yu,LIU Fang-min.Welding Thermal Crack Simulation Study on X70 Grade Pipeline Steel[J].,2009,32(1):15-20.[doi:1001-3938(2009)01-0015-06]
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X70级管线钢焊接热裂纹模拟研究
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
32
期数:
2009年第1期
页码:
15-20
栏目:
试验与研究
出版日期:
2009-01-28

文章信息/Info

Title:
Welding Thermal Crack Simulation Study on X70 Grade Pipeline Steel
文章编号:
1001-3938(2009)01-0015-06
作者:
冯 斌刘 宇刘方明
(中国石油天然气管道科学研究院,河北 廊坊 065000)
Author(s):
FENG BinLIU YuLIU Fang-min
(Pipeline Research Institute of CNPC,Langfang 065000,China)
关键词:
X70级管线钢热模拟热裂纹焊接
Keywords:
X70 grade pipeline steelheat simulationthermal crackwelding
分类号:
TG407
DOI:
1001-3938(2009)01-0015-06
文献标志码:
A
摘要:
采用模拟焊接热循环及热塑性拉伸试验研究了X70级管线钢的焊接裂纹敏感性参数,评判了X70级管线钢的焊接热裂纹敏感性。结果表明,X70级管线钢的热塑性良好,焊接热裂纹倾向为稍敏感(其脆性温度区间为60℃),特别是在焊接正火区的热裂倾向相对较大。最后指出,在现场焊接时,应尽量采用小的热输入量,并控制焊接热影响区的峰值温度过高,避免焊接热影响区裂纹的产生。
Abstract:
Adopting simulation welding thermal cycle and thermoplastics tensile test,it studied welding crack sensitivity parameter of X70 grade pipeline steel, and judged welding thermal cycle sensitivity of X70 grade pipeline steel.The results showed thermoplastics of X70 grade pipeline steel is good,the trend of welding thermal crack is close to slight sensitivity(temperature range of brittleness is 60℃),particularly,the trend is relative great in welding normalizing zone.At last this article gave that it should adopt less heat input in site welding,and control peak temperature in welding heat affect zone to avoid occurring crack.

参考文献/References:

机械工业理化检测人员技术培训和资格鉴定委员会.力学性能试验[M].上海:上海科技普及出版社,2003.

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备注/Memo

备注/Memo:
基金项目:中国石油天然气集团公司科技项目(04A40401)
作者简介:冯斌(1958-),男,工学博士,高级工程师,主要从事油气管道材料、管道强度与寿命评价研究工作。
收稿日期:2008-06-11
更新日期/Last Update: