Advantages And Disadvantages Of Laser Welding Machine

Fly Laser recommends that you learn more about new welding equipment. Laser welding machine is a new type of welding equipment, which is mainly aimed at welding thin-walled materials and precision parts. It can realize spot welding, butt welding, lap welding, sealing welding, etc. , high aspect ratio, small weld width, small heat-affected zone, small deformation, fast welding speed, smooth and beautiful weld seam, no need for post-welding treatment or only simple treatment, high quality weld seam, no porosity, and can be precisely controlled , small focusing spot, high positioning accuracy, easy to realize automation.

advantage:

Fast speed, large depth and small deformation.

It can be welded at room temperature or under special conditions, and the welding equipment is simple to install. For example, when the laser passes through the electromagnetic field, the beam will not deviate; the laser can weld in vacuum, air and certain gas environments, and can weld through glass or materials that are transparent to the beam.

It can weld refractory materials such as titanium, quartz, etc., and can weld heterogeneous materials with good results.

After the laser is focused, the power density is high. When welding high-power devices, the aspect ratio can reach 5:1, and the highest can reach 10:1.

Micro welding is possible. After the laser beam is focused, a very small spot can be obtained, and it can be precisely positioned. It can be applied to the assembly and welding of micro and small workpieces in mass automatic production.

shortcoming:

The assembly accuracy of the weldment is required to be high, and the position of the beam on the workpiece cannot be significantly shifted. This is because after the laser is focused, the spot size is small and the welding seam is narrow, so it is filled with metal materials. If the assembly accuracy of the workpiece or the positioning accuracy of the beam does not meet the requirements, it is easy to cause welding defects.

The cost of lasers and related systems is relatively high, and the one-time investment is relatively large.

Laser welding is to radiate a high-intensity laser beam to the metal surface, and through the interaction between the laser and the metal, the metal is melted to form a weld. Metal melting is only one of the physical phenomena during laser-metal interaction. Sometimes light energy is not mainly converted into metal melting, but manifested in other forms, such as vaporization, plasma formation, etc. However, to achieve good fusion welding, metal melting must be the primary form of energy conversion. To this end, it is necessary to understand the various physical phenomena produced in the interaction between laser and metal and the relationship between these physical phenomena and laser parameters, so that by controlling the laser parameters, most of the laser energy can be converted into metal melting energy to achieve welding.

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