09MnNiDR低温钢焊后热处理工艺研究

汪晶洁; 吴君明; 王红鸿

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09MnNiDR低温钢焊后热处理工艺研究
Research on post weld heat treatment for 09MnNiDR low-temperature steel
2019年49卷第3期页码：28-30
纸质出版：2019
DOI：
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汪晶洁, 吴君明, 王红鸿. 09MnNiDR低温钢焊后热处理工艺研究[J]. 电焊机, 2019,49(3):28-30. DOI：

WANG Jingjie, WU Junming, WANG Honghong. Research on post weld heat treatment for 09MnNiDR low-temperature steel[J]. Eletric Welding Machine2019, 49(3): 28-30. DOI：

摘要

09MnNiDR低温钢在建造和安装容器时

不可避免要经受两次或多次焊后热处理

导致焊接接头性能发生变化

尤其是低温冲击韧性恶化

会带来极大的安全性隐患。以现场中可能出现的焊后热处理工艺为试验条件

研究不同热处理温度545℃、570℃、600℃以及每个温度下不同保温时间对焊接接头强度及低温冲击韧性的影响。通过数据分析发现

09MnNiDR钢可经受焊后热处理温度为545～600℃。当进行长时间热处理加热(反复加热2～3次)时

适用焊后热处理温度为545～570℃。

Abstract

09MnNiDR low-temperature steel is utilized for building and installing container. In practice

the container is sometimes required to perform two or more post weld treatment（PWHT）. This PWHT leads to the deterioration of welded joint properties

especially impact toughness at lower temperature. In this present work

The effects of different heat treatment temperatures of 545 ℃

570 ℃

600 ℃and duration time on strength and impact toughness of welded joint were studied. Three heat treatment temperatures were selected according to the installation site and condition. The result reveals that 545～600 ℃ is applicable PWHT temperature for 09MnNiDR lowtemperature steel. When PWHT times are more than twice

the proper PWHT temperature is 545～570 ℃.