Application of the hottest laser marking technolog

2022-08-12
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The application of laser marking technology in the marking of aluminum profiles

the aluminum profile industry initially used an inkjet printer to print the company's marks on profile products for anti-counterfeiting treatment, which has the following disadvantages:

1. It is unable to provide permanent marks

2. It is easy to block the ink jet head due to the hardening of dust ink, so the pipeline should be cleaned frequently

3. High operation cost of consumables

laser logo: the company's trademark is sprayed with laser on the profile, which has a good response after being put on the market, greatly reducing the risk prevention of some small enterprises

process:

white materials are extruded from round ingots, electrophoretic after sand blasting, or white materials are directly oxidized, and surface treatment after direct powder spraying of white materials, namely, electrophoretic materials, oxidized materials, and powder spraying materials

generally, laser marking is used on white materials. Five lasers emit light at the same time. The marking time is about 4-5 seconds, and then the subsequent process of electrophoresis or oxidation is done to form an effect similar to the watermark on RMB, so as to achieve the purpose of anti-counterfeiting and ensure the high-resolution of experimental power

do not mark directly on the finished electrophoretic materials or oxidized materials. First, the surface coating is damaged after marking the finished products, which affects the corrosion resistance. Second, laser marking is in the intermediate process. When some small factories want to buy laser marking machines to counterfeit trademarks, there is a risk that the equipment of the previous and subsequent processes, together with the laser marking equipment, will be confiscated as a counterfeiting tool at the same time, which raises the threshold of counterfeiting for NAC

the line of powder spraying should be marked with laser. Considering that the powder spraying layer is thick and the mark is seriously covered, the mark is not clear. Increasing the power mark will seriously affect the service life of semiconductors. Lengthening the marking time will seriously affect the production efficiency. In view of this phenomenon, our company has proposed two solutions:

solution 1. It is recommended to mark with YAG after powder spraying

because it can be seen under a high magnification microscope that there is no damage to the powder layer by using a semiconductor YAG laser marking machine. This is the photochemical reaction between YAG wavelength laser and the powder layer, which only changes the color. Therefore, our company suggests using semiconductor YAG laser marking machine to mark after powder spraying, because the current can be controlled at 12a, and technical consultation and standard consultation can be provided for free (at present, the marking current of electrophoretic materials and oxidized materials is about 18a), which can greatly prolong the service life of semiconductor modules, greatly reduce the maintenance rate of equipment, and the time can be shortened to about 1 second, greatly improving the production pace

scheme 2: it is recommended to mark with CO2 laser marking machine after powder spraying

under a high magnification microscope, it can be seen that the powder layer is damaged by CO2 laser marking machine, which is the result of CO2 wavelength laser burning the powder layer. However, because the laser energy can be controlled, the depth of damage can be controlled within the range that does not affect the profile. 5 It's better to have residual samples escorted for installation. After pitting test, the larger the cross-sectional area of the sample (simulating natural acid-base corrosion in the laboratory), this conclusion is verified. Therefore, we suggest to use CO2 after powder spraying. First, the damage to the coating can be controlled within an acceptable range by controlling the energy of the laser. Second, the time can be shortened to about 1 second, greatly improving the production pace. III. The imported CO2 laser is a fully sealed maintenance free product, and the air cooling of the equipment eliminates the water cooler, which greatly reduces the maintenance rate of the equipment. Fourth, 30W or even 10W CO2 imported lasers can be used, which greatly reduces the equipment price

marking on electrophoretic materials or oxidized materials. At present, 100W lamp pump is also the main promotion, instead of 50W semiconductor, to solve the problem of semiconductor laser module life in the user's environment, and meet the user's requirements for clearer marking effect. (end)

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