Advantages and disadvantages of handheld laser welding machine, information sharing

Do you know the Advantages and disadvantages of handheld laser welding machines and information sharing?

Advantages of handheld laser welding machine:

1. The heat input can be reduced to the minimum amount required, the metallographic variation range of the heat-affected zone is small, and the deformation caused by heat conduction is also the lowest.
2. The process parameters of 32mm thick single-pass welding have been verified, which can reduce the welding time of thick plates and even save the use of filler metal.
3. Without using electrodes, and don’t have to worry about electrode contamination or damage. And because it is not a contact welding process, it can minimize the wear and deformation of the machine and tools.
4. Laser beams are easily focused, aligned, and guided by optical instruments. It can be placed at a reasonable distance from the workpiece and can be redirected between machines or between obstacles around the workpiece. No other welding rules can be used due to the space constraints described above.
5. The workpiece can be placed in a confined space (under the control of vacuuming or an internal gas environment).
6. Laser beams can be focused on a small area and can weld small, dense parts.
7. There are a wide variety of weldable materials, and various dissimilar materials can be connected to each other.
8. Easy to automate high-speed welding, also can use digital or computer control.
9. When welding thin material or small diameter wire, there is no trouble with reflow welding like arc laser welder.
10. Not affected by a magnetic field (arc welding and electron beam welding are easy), can accurately weld parts.

Disadvantages of handheld laser welding machine:

1. The position of the element must be very accurate and must be within the focusing range of the laser beam.
2. When the fixture is used for welding parts, the final position of the welding parts must be aligned with the welding spots impacted by the laser beam.
3. The maximum welding thickness is limited. The workpiece with a penetration of more than 19mm is not suitable for laser welding on the production line.
4. The weldability of materials with high reflectivity and thermal conductivity, such as aluminum, copper, and their alloys, will be changed by laser.
5. In high-energy laser beam welding, a plasma controller should be used to drive away from the ionized gas around the molten pool to ensure the reappearance of the weld pass.
6. Weld bead quickly solidifies and may have porosity and embrittlement problems.
7. Expensive machine.

To eliminate or reduce the defects of laser welding machines and make better use of this excellent welding method, various auxiliary process measures are now available, such as mold laser welding machines, jewelry laser welding machines, control laser welding machines, and protective gases, etc., I believe there will be more auxiliary process measures in the future so that we can better enjoy the convenience brought by laser welding machines.