[China Glass Net] The problem of cleaning the glass cover of mobile phones often occurs, and it is also a common problem. There are many reasons for the poor cleaning caused by the improper cleaning of the ultrasonic cleaning equipment, the workshop ring, the replacement of the mobile phone glass cleaning agent, the reasons for the pre-processing, and the insufficient decontamination of the mobile glass cover cleaning agent. The reason is to analyze the situation for you.
1. White point watermarking problem: If the white glass is cleaned to remove water, rinse the sink, vibrate greatly, clean the syrup, etc., the glass cover is replaced after the flat grinding and the frame is replaced, and white spots or watermarks appear. The cleaning inside the oven is basically caused by dirt inside the bottom of the oven or the life of the filter is reached. Clean the corners of each oven with clean, dust-free cloth or pure alcohol, and use water. The scoop is placed in the oven with pure water, and the oven fan is turned on to absorb the dust flowing in the air in the oven, and the dust is adsorbed at different positions for 5-10 minutes. The overflow water is opened a little larger, pay attention to the slow pull speed of the slow pull groove, adjust the speed, and the principle of slow and slow down. There should not be too much air flow near the slow pull. It is well known that pure water is ultrapure water, as long as it is cleaned. Rinsing and cleaning, no use of non-foaming cleaning agent, after slowly pulling out, if the oven is well-made, even if the glass is covered with water drops, it will not be watermarked when it is baked in the oven. Because there is almost no impurity in pure water, where is the dirt attached to the glass surface and dried with high temperature? Moreover, there are basically watermarks, and the place where the watermark appears is on the bottom of the rack or the upper end of the rack, so it is worthy of everyone to think about it; in addition, the defoaming agent (silicone oil) in the non-bubble cleaning agent is easy to adsorb. The surface of the glass is difficult to clean and is also a cause of watermarking.
2, silk screen finished glass lens to exclude the possibility of the above article 1, there are white spots, basically silk screen, there is no silk screen in the clean shed, resulting in a lot of dust and impurities on the glass lens when the silk screen, with The air humidity is dried in the silk screen oven to dry the dust and impurities, resulting in a strong adhesion to the surface of the glass lens. Even the most powerful ultrasonic and syrup can not clean the white spots and impurities. At present, many factories adopt the method. Clean the surface of the glass with a clean cloth and alcohol or white oil. Rub the dust and other impurities and loosen it. Then take it on the ultrasonic cleaner to clean it. Also, mix it with calcium carbonate and white oil and put it on the towel. The powder on the top, then flushed, and then washed on the ultrasonic cleaning machine, the effect can be significantly improved.
3, test white glass and silk screen finished glass, the test process can follow the test of your glass lens production process to see which process in the glass lens in the process will appear these problems, white spots, watermarks, scratches, Anything that can be collapsed, from the beginning of the material, to the process of profiling, flat grinding, polishing, tempering, silk screen printing, etc., take 10 glass lenses and test with the same cleaning parameters to find out the causes of scratches, etc. The proportion of effects that come out is used for cause diagnosis and analysis. The cleaning parameters must be carried out under the standard cleaning scheme, and all the cleaning indicators are tested under the qualified conditions.
Summary: Analysis of the reasons for poor cleaning should be from the entire process flow, the entire workshop environment, from large to small, one by one, first determine the cause of the pollutants, to see if it can be resolved from the upstream control, if not only in the cleaning process Drop (cleaning is only an auxiliary work, not all the stains can be cleaned, the technicians do not need to clean the cleaning requirements); if not, please replace the cleaning agent, it is recommended to use a professional cover cleaning agent, which is more necessary More effort.
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