Protective lenses are very important precision components in the optical system of laser cutting machines, and their cleanliness has a significant impact on the processing performance and quality of laser cutting machines. The protective lenses of the laser cutting machine are dry and consumable parts, which generally need to be replaced in a timely manner.

The laser after-sales department has been collecting feedback from high-power users and comprehensively analyzing it. It has been found that in the application of high-power cutting technology, the cutting head protection lens is often stained and burnt. So, what are the reasons for these adverse phenomena and how can they be effectively prevented?

NO.1 Problem: Auxiliary gas is not clean

High power cutting equipment has high power consumption and relatively high energy consumption. In order to save costs, most users use compressed air as an auxiliary gas. If the air compressor and supporting filtering equipment fail, resulting in impure gas, the protective lens will be contaminated by dust, oil, water, and other pollutants, causing damage to the protective lens and affecting the normal cutting of the cutting machine.

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01 Do a good job in cleaning and dust removal

Regularly inspect the protective lenses and promptly remove any stains and liquids present on the lenses. Dust prevention should be meticulous and careful when cleaning, as the lenses are afraid of falling or touching to prevent damage to the lenses.

02 Check the operation status of the air compressor

Contact the manufacturer of the air compressor and its supporting equipment for timely maintenance;

Regularly replace the filter element;

Regularly replace the protective mirror sealing ring.

The role of protective gas: firstly, it blows away the residue generated during the cutting process, and secondly, it prevents the residue from entering the lens, thus effectively protecting the lens. So, we must ensure the purity of the input gas.

NO.2 Problem: Using inferior lenses

It is understandable for any processing enterprise to reasonably reduce usage costs. But if one

Forcing low priced consumables while neglecting the consumption of the entire machine is not worth the loss. The after-sales engineer once discovered unknown brand of laser cutting consumables at the user's location, causing significant damage to the cutting head. The cutting head is a very precise equipment component that must be returned to the factory for repair due to sub heavy damage. Therefore, the associated production downtime will have a direct impact on the delivery time... Such a careful calculation shows that the losses caused by inferior consumables to the enterprise are far greater than the "huge" part of the money that is "expensive" to purchase high-quality consumables.

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01 Replace protective lenses produced by professional manufacturers

The use of low-quality protective lenses is prone to dirt, film detachment, and burning, resulting in extremely unstable cutting effects, thus requiring

Frequent replacement of protective lenses can actually increase usage costs. It is strongly recommended that laser cutting machine users use specialized lenses

Protective lenses produced by manufacturers·

NO3 issue: Unsuitable process parameters

As is well known, during the debugging phase of laser cutting equipment, process debugging is carried out on materials that are commonly cut by users

Save the parameters to the operating system.

In practical applications, users only need to call up the corresponding process parameters, fine tune and test according to the actual situation of the material, and confirm that there are no errors before proceeding with batch processing. Attention: The words "fine tuning and testing" are not suggestions, but necessary instructions, because even for the same material, different batches may have different characteristics. Before processing, it is necessary to test until the appropriate process parameters are debugged and high-quality surface cutting effects are achieved, and then batch processing can be carried out.

Improper process parameters not only result in defective products, but also may cause damage to equipment components such as cutting head protective lenses. During the processing, if any defective products are found, they should be stopped for inspection in a timely manner to avoid causing greater losses.

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01 Reasonably setting process parameters

The higher the output energy of the laser cutting machine, the more likely it is to cause perforation and sputtering damage to the lens if the process parameters are not set properly. Therefore, when using the laser cutting machine, we should try to set the perforation parameters as reasonably as possible to protect the lens. The correct operating sequence is to blow protective gas first, and then perform light perforation. The perforation parameters should be reasonable, and the cutting can only be done after the perforation is completed.

02 User instance resolution

Solution to burning protective mirrors during co edge cutting of Wanwa laser cutting machine

Problem description: All drawings share the same edge during layout, and the material undergoes slight deformation after being heated, resulting in the cutting point not aligning with the previous cut seam and causing holes to burn out the lens when cutting again in the second half.

Summary

Choosing high-quality protective lenses is a basic guarantee for smooth operation when using laser equipments. Incorporate equipment maintenance work into daily maintenance standards, do a good job in maintenance, and protect the lenses for long-lasting use, thereby reducing costs and increasing efficiency.

About HGTECH: HGTECH is the pioneer and leader of laser industrial application in China, and the authoritative provider of global laser processing solutions. We have comprehensively arranged laser intelligent machine, measurement and automation production lines, and smart factory construction to provide overall solutions for intelligent manufacturing.