Microstructures and Properties of Ultra-Narrow-Gap Multi-Pass Welded Joint of 50 mm Turbine Rotor Steel by Laser Welding with Filler Wire

2015 ◽  
Vol 42 (2) ◽  
pp. 0203007
Author(s):  
赵勇 Zhao Yong ◽  
王清曌 Wang Qingzhao ◽  
黄坚 Huang Jian ◽  
吴毅雄 Wu Yixiong
Keyword(s):  
Laser Welding ◽  
Welded Joint ◽  
Turbine Rotor ◽  
Rotor Steel ◽  
Filler Wire ◽  
Narrow Gap

Narrow-gap laser welding using filler wire of thick steel plates

2017 ◽  
Vol 93 (5-8) ◽  
pp. 2955-2962 ◽  
Author(s):  
Yong Zhao ◽  
Shengchong Ma ◽  
Jian Huang ◽  
Yixiong Wu
Keyword(s):  
Laser Welding ◽  
Steel Plates ◽  
Filler Wire ◽  
Narrow Gap ◽  
Thick Steel

Microstructures and Properties of 50 mm Thick SA508Gr.3Cl.2 Steel Welding Joints by Ultra-Narrow-Gap Laser Welding with Filler Wire

2017 ◽  
Vol 44 (11) ◽  
pp. 1102006 ◽  
Author(s):  
张益文 Zhang Yiwen ◽  
张茂龙 Zhang Maolong ◽  
孙志远 Sun Zhiyuan ◽  
黄 坚 Huang Jian ◽  
姚成武 Yao Chengwu ◽  
...  
Keyword(s):  
Laser Welding ◽  
Filler Wire ◽  
Narrow Gap ◽  
Welding Joints

scholarly journals Narrow Gap MAG Welding and Joint Performance Analysis of 25Cr2NiMo1V Thick Plate

2022 ◽  
Vol 2160 (1) ◽  
pp. 012022
Author(s):  
Xiaoyan Qian ◽  
Xin Ye ◽  
Xiaoqi Hou ◽  
Fuxin Wang ◽  
Shaowei Li ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Ductile Fracture ◽  
Impact Energy ◽  
Welded Joint ◽  
Fusion Line ◽  
Coarse Grained ◽  
Mag Welding ◽  
Rotor Steel ◽  
Narrow Gap ◽  
The Impact

Abstract The narrow gap MAG welding system was used to successfully weld the 50mm thick butt joint of 25Cr2NiMo1V rotor steel. After 15-layer bead welding, heat treatment is performed on the welded joint. Compare the changes in the microstructure, tensile strength and impact energy of the welded joints and the heat-treated joints at 580°C (20h). The results show that after the heat treatment of the structure, the side lath ferrite in the coarse-grained region grows up, and the eutectoid ferrite grows up in the fine-grained region first. The strength of the welded joint is about 605MPa, and the fracture is characterized by ductile fracture. After heat treatment at 580°C (20h), the strength is about 543MPa, the fracture is characterized by ductile fracture, and there are also a large number of discontinuous small surface platforms, and the characteristic of brittle fracture appears slightly. The impact energy of the weld center of the welded joint is about 141J, the fusion line area is about 113J, and the toughness of the fusion line is slightly lower than that of the weld center. After heat treatment, the impact energy at the center of the weld is about 183J, the fusion line area is about 95J, the toughness of the weld center increases, and the toughness of the fusion line decreases.

Applying statistical models optimize the process of multi-pass narrow-gap laser welding with filler wire

2014 ◽  
Vol 75 (1-4) ◽  
pp. 279-291 ◽  
Author(s):  
Hao Shi ◽  
Ke Zhang ◽  
Zhengyi Xu ◽  
Tianyu Huang ◽  
Liwen Fan ◽  
...  
Keyword(s):  
Laser Welding ◽  
Statistical Models ◽  
Filler Wire ◽  
Narrow Gap

Multi-pass laser welding of thick plate with filler wire by using a narrow gap joint configuration

2013 ◽  
Vol 27 (7) ◽  
pp. 2125-2131 ◽  
Author(s):  
Y. C. Yu ◽  
S. L. Yang ◽  
Y. Yin ◽  
C. M. Wang ◽  
X. Y. Hu ◽  
...  
Keyword(s):  
Laser Welding ◽  
Thick Plate ◽  
Filler Wire ◽  
Narrow Gap ◽  
Joint Configuration

Feasibility study of laser welding assisted by filler wire for narrow-gap butt-jointed plates of high-strength steel

2013 ◽  
Vol 57 (5) ◽  
pp. 693-699 ◽  
Author(s):  
Fanrong Kong ◽  
Wei Liu ◽  
Junjie Ma ◽  
Ernest Levert ◽  
Radovan Kovacevic
Keyword(s):  
Laser Welding ◽  
Feasibility Study ◽  
High Strength Steel ◽  
High Strength ◽  
Filler Wire ◽  
Narrow Gap
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