The laser welding machine uses the laser beam as a heat source, and can deposit, seal, fill, and repair defects such as wear, scratches, pinholes, cracks, defect deformation, hardness reduction, and sand holes of molds and metal workpieces. Now, laser welding technology has been maturely applied in many fields, such as high-tech electronics, automobile manufacturing, precision machining, etc. As one of the important components of laser CNC applications, laser beam welding has some unique advantages.
Below is a comparison of laser welding and other welding techniques.
| Welding Method | Heat Affected Zone | Thermal Deformation | Weld Quality | Add Solder | Welding Environment |
| Laser welding | Smaller | Less | Better | × | None |
| Brazing | Average | — | Average | √ | Overall warming |
| TIG | Larger | Greater | Average | √ | +Electrode |
| ERW | Larger | Greater | Average | × | +Electrode |
| PAW | Average | — | Average | √ | +Electrode |
| EBW | Smaller | Less | Better | × | Vacuum |
From the above table, we can see that the CNC laser welder has many strong points.
1.High Flexibility
Laser CNC welding does not need pressure and with the fast welding speed, high welding efficiency, large welding depth, and small residual stress and deformation. Besides, laser welding machine can weld special materials such as refractory materials of high melting point metals. Furthermore, laser welding technology can even be used for welding non-metallic materials such as ceramics. Besides, laser welder machine can realize remote welding for hard-to-reach parts. In addition, fiber laser welding machine for sale can realize welding at any angle. And it can realize CNC laser welding of inaccessible parts, complex workpieces, and large workpieces with irregular shapes.
2.Wide Application
Laser welding is not only suitable for carbon steel, stainless steel, and aluminum alloys, but also for titanium, nickel, zinc, chromium, niobium, gold, silver and other metals and alloys.
3.Low Labor Cost
The heat-affected zone and deformation of the CNC fiber laser welding machine is small. In addition, the fiber laser welder can achieve very beautiful welding effect. Therefore, the follow-up treatment of laser welder CNC machine is very little, which can greatly reduce or eliminate the labor in grinding, polishing, and leveling processes.
4.Simple operation
The interface of the laser welding equipment is simple and clear, the operation is simple and easy to learn, and the difficulty of getting started is low. And the operator’s proficiency requirements are low, and costs can also be saved in personnel selection.
5.Contactless Processing
The laser welding equipment belongs to non-touch processing, which will not damage the processed parts during the welding process. An automatic laser welder has the features of fast speed, high welding strength, flat welding seam, and small deformation. And the CNC fiber laser welder for sale can weld under special conditions such as closed spaces. Moreover, laser welding machines have many advantages compared to traditional welding machines. For example, the laser beam has a small laser focus spot and high power density. Therefore, it can weld some alloy materials with high melting point and high strength. And for non-contact processing, there are no tool loss.
6.High Safety & Environmental Friendly
Firstly, the laser welding machine has higher safety because it emits light only when it touches the metal, which greatly reduces the accident rate caused by human error. And wear laser protective glasses during operation, which can effectively reduce the damage to the eyes. Secondly, the welding process does not pollute the environment, it can be directly welded in the air, and the process is simple.
7.Good Laser Beam Quality
After the laser is focused, it will obtain high laser beam density and small light spot. Because it is not affected by the magnetic field and can be positioned accurately. Besides, it can be used as a micro welding machine such as handheld laser welder (hand held laser welding machine), desktop laser welder, portable laser welder for sale, etc. It is suitable for the assembly welding of small workpieces that are automatically produced in large quantities.
8.High Machining Accuracy
The laser can be precisely controlled and the focused spot is small. So laser welder can be positioned with high precision to achieve precision machining. The laser welding machine has large aspect ratio, small heat-affected zone, and tiny welding deformation. Moreover, it is easy to cooperate with computer numerical control system or manipulator and robot to realize automatic welding and improve production efficiency. Automatic laser robot welding is especially suitable for welding precision workpieces and heat-sensitive parts. And the welded products hardly need secondary processing.