[1]兖文涛.超声冲击技术对U71Mn钢堆焊表面残余应力的调控[J].焊管,2023,46(10):28-31.[doi:10.19291/j.cnki.1001-3938.2023.10.005]
　YAN Wentao.Control of Residual Stress on the Surface of U71Mn Steel Surfacing by Ultrasonic Impact Technology[J].,2023,46(10):28-31.[doi:10.19291/j.cnki.1001-3938.2023.10.005]
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超声冲击技术对U71Mn钢堆焊表面残余应力的调控()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
46
期数:
2023年第10期
页码:
28-31
栏目:
试验与研究
出版日期:
2023-10-19

文章信息/Info

Title:
Control of Residual Stress on the Surface of U71Mn Steel Surfacing by Ultrasonic Impact Technology
文章编号:
10.19291/j.cnki.1001-3938.2023.10.005
作者:
兖文涛
中海油能源发展股份有限公司清洁能源分公司，天津 300456
Author(s):
YAN Wentao
CNOOC Energy Technology & Services Limited, Clean Energy Branch, Tianjin 300456, China
关键词:
超声冲击; 焊接残余应力; 冲击次数
Keywords:
ultrasonic impact;  welding residual stress;  impact times
分类号:
TG401
DOI:
10.19291/j.cnki.1001-3938.2023.10.005
文献标志码:
A
摘要:
采用超声冲击设备对U71Mn钢堆焊表面进行全覆盖冲击，以研究超声冲击次数对焊接残余应力的影响并进行评价分析。结果表明：对U71Mn钢进行超声冲击处理能够有效改善冲击区域的焊接残余应力，将表层残余拉应力转变成有益的残余压应力。随着冲击次数的增加，堆焊表面焊接残余压应力分布趋于平缓稳定。超声冲击处理引起的残余压应力层大致分为三个阶段：压应力值下降较快阶段、压应力值维持阶段以及压应力值缓慢转变拉应力阶段。本次试验中超声冲击次数为8次时，表面横向残余压应力值维持在300 MPa左右，纵向残余压应力值维持在350 MPa左右。由超声冲击处理引起的纵向残余压应力层达到1.2 mm，横向残余压应力层达到1.6 mm。
Abstract:
In order to study the impact of ultrasonic times on welding residual stress, ultrasonic impact equipment was used to full impact on U71Mn steel surfacing. The results indicate that ultrasonic impacting on U71Mn steel could improve welding residual stress near impact area effectively and could transform residual tensile stress values into beneficial residual compressive stress values. With the extension of impact times, distribution of residual compressive stress in surface welding tended to be gentle and stable. The compressive residual stress layer can be divided into three stages: stage of the stress value decreasing rapidly; stage of stress maintenance; stage of stress being into tensile residual stress. After 8 times full impact, the transverse residual compressive stress on surface was 300 MPa, and longitudinal residual compressive stress value was 350 MPa. The longitudinal compressive residual layer was about 1.2 mm, and the transverse residual compressive stress layer was about 1.6 mm.

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备注/Memo

备注/Memo:
收稿日期：2023-04-21作者简介：兖文涛（1987—），男，硕士，主要从事海洋工程焊接工艺、焊接残余应力研究及相关项目管理工作。
更新日期/Last Update: 2023-10-26