Why is the marking effect of fiber laser marking machine uneven?

Fiber laser marking machine can be said to be one of the most widely used laser equipment nowadays, because its technology is mature, its performance is stable, its price is relatively favorable and The processing speed is fast, the marking surface is smooth and flat, no follow-up processing is required, the deformation is small, the processing precision is high, the repeatability is good, and there is no burr. Fiber laser marking machines have been used in major industries, and the applicable industries are also very wide. It has developed from traditional industrial applications to civilian use, such as Douyin, Kuaishou, shopping malls, supermarkets, online stores, etc. marking coconuts, apples, lighters, temporary parking signs, restaurant QR code charges, cola, etc. Any equipment needs normal use and maintenance. The following laser editor will share with you: Why is the marking effect of fiber laser marking machine uneven? this question.

1. Mark a certain range of content with defocus: because each focusing mirror has a corresponding focal depth range, However, the method of defocusing will easily lead to a large-scale marking pattern, and the edge is at the critical point of the depth of focus or beyond the range of the depth of focus, which is more likely to cause unevenness of the effect. Therefore, the problem of laser energy must be considered in the method of polarized marking; , The fixing fixture and the galvanometer are not adjusted properly, which causes part of the light spot to be blocked when the laser passes through the galvanometer. There is also a situation that the galvanometer deflection lens is damaged, and when the laser beam passes through the damaged area of u200bu200bthe lens, it cannot be reflected well. Therefore, the laser energy of the laser beam passing through the damaged area of u200bu200bu200bu200bthe lens is inconsistent with that of the non-damaged area of u200bu200bthe lens, and the final laser energy acting on the material is also different, so that the marking effect is uneven;

3. Machine The level is not adjusted properly, that is, the laser galvanometer lens or the field lens lens and the processing table are not parallel: because the two are not horizontal, the distance between the laser beam and the processing object after passing through the field lens will be inconsistent, and the final laser will fall on the processing object. The energy will have inconsistent energy density, at this time, the effect will be uneven on the material.

4. Thermal lens phenomenon: When the laser passes through the optical lens (refraction, reflection), it will cause the lens to heat up and produce slight deformation. This deformation will raise the focus of the laser and shorten the focal length. If the machine is fixed, when the distance is adjusted to the focal point, after the laser is turned on for a period of time, the laser energy density acting on the material will change due to the thermal lens phenomenon, resulting in uneven marking effect.

As a leading high-tech technology, laser marking technology has always been a key technology promoted by the country. It has played a great role in today's Chinese manufacturing industry. Compared with traditional processing technology, optical fiber The laser marking machine is operated by computer, which is simple and convenient to operate, can meet the customized processing of various products, and can realize assembly line production. As a laser marking machine, laser marking machine manufacturer, and laser equipment manufacturer in the peninsula, Laser Technology Co., Ltd. has 16 years of experience in laser equipment Ru0026D and production. All kinds of laser equipment are available in stock, and non-standard equipment customization experience is rich, professional solutions Laser technology problems. Welcome new and old customers to visit and buy!

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