The protective lens of the laser welding machine is always burned out. How to solve this problem?

Laser welding machine is a high-precision equipment commonly used in modern industrial production. It plays an important role in the welding and cutting process of metal materials due to its high energy density and high temperature characteristics. However, many people will encounter a common problem when using a laser welding machine, that is, the frequent damage and burnout of the protective lens. This problem not only affects production efficiency, but also increases repair and replacement costs. So, how should we solve this problem?

First of all, we need to understand the reason why the protective lens is burned. During laser welding, a high-energy laser beam is focused on the workpiece, forming a high-temperature area for welding. The protective lens plays a role in preventing the laser from damaging the welding head and seam. However, due to the high-energy and high-temperature characteristics of lasers, protective lenses often face the risk of high-temperature shock and ablation. Therefore, the material and manufacturing process of the protective lens are very important.

In order to solve the problem of frequent burnout of protective lenses, we can start from the following aspects. First, choose the right material. Materials commonly used for protective lenses include silicon wafers, yttrium aluminum garnet, silicon dioxide, and the like. These materials have good high temperature resistance and resistance to laser damage. Second, use an excellent manufacturing process. Protective lenses need to be precision machined and polished during the manufacturing process to ensure their surface finish and precision. At the same time, proper coating can enhance the heat resistance and laser ablation resistance of the protective lens.

In addition to choosing the right material and manufacturing process, there are a few precautions we can take to prolong the life of our protective lenses. First, check and clean the protective lenses regularly. A large amount of metal dust and fumes are generated during laser welding, and these particles will adhere to the surface of the protective lens and increase the risk of its ablation. Therefore, regular inspection and cleaning of protective lenses is crucial. Second, avoid excessive soldering time and power. Excessive welding time and power can lead to overfocusing of the laser energy, causing additional loading and damage to the protective lens. Reasonable control of welding parameters is the key to protect the life of the lens.

If the above preventive measures still do not solve the problem, we can also consider taking some more professional measures. For example, an auxiliary gas, such as nitrogen or argon, can be added to the welding process to form a protective layer that reduces the direct exposure of the laser and the risk of ablation. In addition, choosing the right welding head and welding material can also reduce the damage to the protective lens.

All in all, to solve the problem of frequent burnout of the protective lens of the laser welding machine, it is necessary to comprehensively consider multiple factors such as material selection, manufacturing process, and preventive measures. Selecting appropriate materials, ensuring excellent manufacturing processes, and strengthening the implementation of preventive measures are the keys to prolonging the service life of protective lenses. Through the above methods and suggestions, I believe it can help you solve this problem and improve the efficiency and economic benefits of laser welding machines.