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JWJ > Volume 39(2); 2021 > Article
Journal of Welding and Joining 2021 April;39(2) :167-173.
Published online March 19, 2021.
A Review on the Characteristics of Laser Welding with Filler Wire According to Process Parameters Controlling the Heat Input and Wire Feeding
Jehee Lee*, Minjung Kang**
*Department of Aerospace Engineering, Inha University, Incheon, 22212, Korea
**Advanced Functional Technology R&D Department, Korea Institute of Industrial Technology, Incheon, 21999, Korea
Correspondence: Minjung Kang  Email:
Received December 3, 2020  Revised December 22, 2020  Accepted January 14, 2021  Published online March 19, 2021
Laser welding with filler wire is a technology capable of gap bridging at a relatively fast welding speed. Recently, the demand for the technology is increasing with the application of 3D printing. This process is highly dependent on the strength and properties of the filler metals. The filler wire can enhance the weld strength, corrosion and crack resistance by changing the composition of the filler wire. The process stability is severely influenced by process parameters, since the size of the heat source and the dimensions of the filler metals are small. This review article covers the variables related to wire feeding such as feeding direction, feeding angle, a displacement between wire and laser beam, and height of intersection, in addition to heat inputs related variables such as laser power, welding speed, and wire feed rate that have been discussed in numerous publications. It is intended to provide a guide for the readers who needs to design the system and select the process parameters for laser welding with filler wire.
Keywords: Laser brazing | Process parameters | Characteristic | Wire feeding | Laser application
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