Sep 29, 2026
How Does Nozzle-to-Workpiece Distance Affect Handheld Laser Welding?
The nozzle-to-workpiece distance can affect gas shielding, weld stability, and weld appearance. Find out how to maintain the right distance for more consistent handheld laser welding results.
The distance between the Handheld Welding Head nozzle and the workpiece can affect gas shielding, weld stability, and the final weld appearance. Even with the same laser parameters, an incorrect distance may lead to inconsistent results.
1. Nozzle Too Close
If the nozzle is too close to the workpiece:
- The gas flow can become disturbed.
- The nozzle may touch the molten pool or workpiece.
- Spatter can contaminate the nozzle more easily.
2. Nozzle Too Far
If the nozzle is too far away:
- Shielding gas becomes less effective.
- Air can enter the welding area more easily.
- Oxidation and an unstable weld pool may occur.
3. Keep the Distance Consistent
During welding, try to maintain a stable nozzle-to-workpiece distance instead of constantly changing the working height.
If the weld quality suddenly changes, check the nozzle distance, gas flow, protective lens, welding speed, and laser power before changing multiple parameters at once.
Tips
When setting a new welding parameter, keep the nozzle distance consistent first. This makes it easier to determine whether a problem is caused by the welding parameters or the actual working position.
