Rail surfacing repairing technique with self-shielded flux-cored wires

被引：1
|
作者：
Chen, Jia [1 ]
Gou, Guoqing [2 ]
Zhu, Zhongyin [2 ]
Gao, Wei [3 ]
机构：
[1] Chengdu Ind & Trade Coll, Chengdu 611731, Peoples R China
[2] Southwest Jiaotong Univ, Minist Educ China, Key Lab Adv Technol Mat, Chengdu 610031, Peoples R China
[3] Univ Auckland, Dept Chem & Mat Engn, PB 92019, Auckland 1142, New Zealand
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2020年 / 34卷 / 1-3期
关键词：
Rail surfacing repairing; self-protective flux-cored wire; single-pass welding;
D O I：
10.1142/S0217979220400561
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A newly self-protecting flux-cored wire was used for simulated U75V rail repairing and five welding process parameters were applied. The influence of welding parameter on the hardness and microstructure of the wire and solder layers was investigated. The single-pass welding process with different preheating parameters and post-treatment parameters were also taken into research. The results showed that the welding process parameters have a significant influence on the weld quality, and mismatched parameters will increase the welding defects. The number of welding layers has a great influence on the hardness and structure. Increasing preheating temperature and a post-heat treatment at a high-temperature can enhance the hardening effect.
引用
收藏
页数：6
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