Abstract
In laser-enhanced gas metal arc welding (GMAW), which projects a lower-power laser onto the droplet, free flight metal transfer was obtained. Laser recoil pressure force is identified as the main reason to change the metal transfer process. For further control of laser-enhanced GMAW, this additional detaching force is estimated at a reasonable level. A nonlinear model of dynamic metal transfer is established based on the physics fundamental of this process. Laser recoil pressure force is combined into dynamic force balance theory to be as the reset criterion to detect the droplet detachment. It is found that the simulation results agree with the experiment results, which indicate that the model could be used for the further closedloop control.
| Original language | English |
|---|---|
| Pages (from-to) | 140-148 |
| Number of pages | 9 |
| Journal | Welding Journal |
| Volume | 91 |
| Issue number | 5 |
| State | Published - May 2012 |
Keywords
- (GMAW)
- Gas metal arc welding
- Laser recoil pressure force
- Metal transfer
- Nonlinear model
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys