Laser Micromachining Overview – Welding
Laser Micromachining (Welding).
- Lasers are an excellent source to achieve high quality continuous welds with very smooth spatter-free surfaces.
- Welding micro parts requires a much greater degree of control than conventional welding applications in order to prevent over penetrating and damaging the substrates.
- Key considerations when choosing the appropriate laser source to use for micro welding includes beam quality /spot size, output power stability, and material to be welded.
- Fixturing is crucial to achieving a successful micro weld. Potomac Photonics has extensive experience designing and building fixtures to hold the most challenging micro parts.
- Heat Conduction Welding is when the substrate material is heated above the melting temperature without melting. This process is optimal for welding thin materials and wires.
- Keyhole Welding is when the substrate is heated above the vaporization temperature and a keyhole is formed. This process is optimal for deeper penetration welds.
- Once the laser welding process is qualified for a specific application, it can be automated for high volume production.
- Potomac has in-house capability to laser weld metals and plastics for prototyping and production projects.