service life of the laser protective lens in laser welding

Many customers have reported that the lenses of handheld laser welding equipment are frequently damaged, resulting in high maintenance frequency and exorbitant costs, which is a major concern. However, upon a thorough understanding of the equipment's principles and usage specifications, it becomes clear that this situation can be avoided.

The core of laser welding technology lies in photoelectric conversion. The pump source, a crucial component, efficiently converts electrical energy into light energy, generating a high-temperature focal point with temperatures reaching up to tens of thousands of degrees Celsius. This enables the instantaneous melting of various welding materials. Meanwhile, the red light emitted by the welding torch oscillates at a high frequency of 4,000 times per second, performing precise processing on the weld seam to ensure a smooth and high-quality appearance.

In the entire energy transmission system of the equipment, starting from the laser generator, passing through the fiber optic cable and QBH interface, and ending at the welding torch, the lenses play an indispensable role. These lenses utilize the 45-degree refraction and reflection principle to construct a sophisticated optical path system, enabling the precise transmission and focusing of thermal energy. However, precisely due to this, the optical path system has extremely stringent requirements for environmental cleanliness. Any minute dust or impurities that enter the high-temperature optical path will instantly combust, causing irreversible damage to the lenses. In practical operation, customers new to laser welding often overlook the issue of material impurities, allowing sparks generated during the melting of materials to impact the lenses, accelerating their damage.

It is worth noting that a protective lens is installed in front of the focusing and collimating lens. This protective barrier can effectively intercept most of the potential hazards. Customers only need to develop the habit of regular inspections and timely replacement of the protective lens to significantly reduce the risk of damage to the core optical path lenses. In addition, standardized welding techniques are equally crucial. When operating, maintaining a 45-degree angle of the welding torch and ensuring it moves along the direction of the optical path can significantly reduce the back-splash of sparks, further extending the service life of the lenses at the operational level and effectively controlling equipment maintenance costs.

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