[1]李景艺,潘 强,陈广军,等.热输入对2.25Cr-1Mo-0.25V钢埋弧焊焊缝金属韧性的影响[J].焊管,2018,41(7):57-59,64.[doi:10.19291/j.cnki.1001-3938.2018.07.013]
 LI Jingyi,PAN Qiang,CHEN Guangjun,et al.Effect of Heat Input on Metal Toughness of 2.25Cr-1Mo-0.25V Steel Submerged Arc Welding Weld[J].,2018,41(7):57-59,64.[doi:10.19291/j.cnki.1001-3938.2018.07.013]
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热输入对2.25Cr-1Mo-0.25V钢埋弧焊焊缝金属韧性的影响()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
41
期数:
2018年第7期
页码:
57-59,64
栏目:
经验交流
出版日期:
2018-07-28

文章信息/Info

Title:
Effect of Heat Input on Metal Toughness of
2.25Cr-1Mo-0.25V Steel Submerged Arc Welding Weld
文章编号:
10.19291/j.cnki.1001-3938.2018.07.013
作者:
李景艺1潘 强2陈广军2杨耀华2刘尔玺2王 譞1
1. 兰州兰石集团兰驼农业装备有限公司,兰州 730314;
2. 兰州兰石能源装备工程研究院有限公司,兰州 730314
Author(s):
LI Jingyi1 PAN Qiang2 CHEN Guangjun2 YANG Yaohua2 LIU Erxi2 WANG Xuan1
1. Lanzhou Lanshi group LANTUO Agricultural Equipment Co., Ltd., Lanzhou 730314, China; 
2. Lanzhou Lanshi energy equipment engineering research institute Co., Ltd., Lanzhou 730314, China
关键词:
2.25Cr-1Mo-0.25V钢热输入冲击韧性贝氏体熔敷效率
Keywords:
2.25Cr-1Mo-0.25V steel heat input impact toughness bainite deposition efficiency
分类号:
TG407
DOI:
10.19291/j.cnki.1001-3938.2018.07.013
文献标志码:
B
摘要:
为了验证Cr-Mo-V钢在较大规范下焊接的可行性,通过化学成分、力学性能及微观形貌等试验,对2.25Cr-1Mo-0.25V钢在3组不同热输入下埋弧焊焊缝金属韧性进行了研究。试验结果显示,随着焊接热输入的增大,化学成分变化不大,熔敷金属强度增高,冲击韧性略有降低;焊缝金属的组织均为贝氏体回火组织,分布均匀、细化。研究结果表明,适当加大焊接热输入,不会引起焊缝金属冲击韧性的大幅度下降,对于焊缝金属的贝氏体回火组织的充分转变有一定好处,而且可以提高熔敷效率、减少夹渣等缺陷的产生。
Abstract:
In order to verify the feasibility of welding Cr-Mo-V steel under larger specifications, the submerged arc welded metal toughness of 2.25Cr-1Mo-0.25V steel under 3 sets heat input were studied by chemical composition, mechanical properties and microscopic morphology tests. The results showed that with the increase of welding heat input, the chemical composition changed little, the strength of the deposited metal increased, and the impact toughness decreased slightly. At the same time, the microstructure of the weld metal was tempered bainite with uniform distribution and refinement. The results of the study indicated that appropriately increasing welding heat input would not lead to a significant decrease in the impact toughness of the weld metal, it was benefitial to the full transformation of the weld metal tempered bainite structure, and at the same time, and it could also improve the deposition efficiency and reduce the generation of slag inclusions.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2018-01-12
修改稿收稿日期:2018-06-01
作者简介:李景艺(1978—),男,大学本科,工程师,主要从事金属热处理、机械设计方面的工作。
更新日期/Last Update: 2018-08-24