Description of hand-held laser marking machine

The laser welding machine radiates a high-intensity laser beam to the metal surface, and through the interaction between the laser and the metal, the metal is melted and formed. welding. Metal melting is only one of the physical phenomena during the interaction of the laser with the metal. 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 main form of energy conversion. To this end, it is necessary to understand the various physical phenomena generated in the interaction between laser and metal and the relationship between these physical phenomena and laser parameters, so that most of the laser energy can be converted into metal melting energy by controlling the laser parameters to achieve welding. Purpose.

Laser welding machines are divided into handheld laser welding machines and desktop laser welding machines. What are the advantages and disadvantages of handheld fiber laser welding machines?

Advantages of hand-held laser welding machine

Hand-held laser welding machine adopts fiber laser, and the laser can realize long-distance output through optical fiber, also known as fiber laser welding machine. Therefore, it is more popular with users in terms of beam quality, light spot, energy loss and welding freedom. The equipment is simplified, flexible to use, and the price is cheap. The focus is on the welding function and process quality. The spot welding machine is more powerful than the hard light path, which was cheaper in the past. The main disadvantage of the laser welding machine is the hard light path laser spot welding machine. The main disadvantage is that the equipment is relatively 'stupid.

And some hand-held fiber laser welding machines use the new technology of swinging the laser welding head (wobbling) to realize the adjustable parameters such as the spot, so you don't need to worry about the workpiece. The distance between them is a little too large, which will affect the welding (generally, welding can be achieved between 3-5MM), which significantly improves the application function and scope of welding and reduces the difficulty of welding!

Disadvantages of hand-held laser welding machines

Laser welding machines have very high requirements on the assembly accuracy of parts that require weldments, and the position of the beam on the workpiece cannot be significantly shifted . This is because the spot size is small after the laser is focused, and the welding seam is narrow, which is filled with metal materials. If the workpiece assembly accuracy or beam positioning accuracy does not meet the requirements, it is easy to cause welding defects.

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

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