White glass before tempering: white dots and watermarks, watermarks. See if the quality of pure water is up to standard, the service life of the syrup and whether it uses a non-foaming cleaning agent, whether the overflow water is too small, whether the filter and hygiene of the oven are up to standard, environmental sanitation and airflow control, syrup temperature and other temperatures are correct, flat Whether the ground glass is used in the water to clean the rack and place.
Common problems in glass lens cleaning: process products, causes after cleaning, testing and diagnostic reasons
White glass before tempering: white dots and watermarks, watermarks. See if the quality of pure water is up to standard, the service life of the syrup and whether it uses a non-foaming cleaning agent, whether the overflow water is too small, whether the filter and hygiene of the oven are up to standard, environmental sanitation and airflow control, syrup temperature and other temperatures are correct, flat Whether the ground glass is used in the water to clean the rack and place. Whether the vibration is too small, the cleaning time is too short, the pure water in the tank is not replaced as required, and the handle of the slow pull basket floods the water.
White glass after tempering: white dots and watermarks, watermarks. See if the quality of pure water is up to standard, the service life of the syrup and whether it uses a non-foaming cleaning agent, whether the overflow water is too small, whether the filter and hygiene of the oven are up to standard, environmental sanitation and airflow control, syrup temperature and other temperatures are correct, flat Whether the ground glass is used in the water to clean the rack and place. Whether the potassium nitrate after tempering is dissolved in hot water, and whether the dissolved water is frequently replaced. The vibration is too small, the cleaning time is too short, the pure water in the tank is not replaced as required, and the handle of the slow pull basket floods the water.
Silk screen finished products: white dots and watermarks, watermarks. See if the quality of the pure water is up to standard, the service life of the syrup and whether the non-foaming detergent is used, whether the overflow water is too small, whether the filter and hygiene of the oven are up to standard, the sanitation and airflow control, the syrup temperature and other temperatures are correct, and the vibration Too small, the cleaning time is too short, the pure water in the tank is not replaced as required, and the handle of the slow pull basket floods the water.
Silk screen finished or white glass lens: drop ink, scratch, chipping, off mirror silver. Whether the vibration is too large, the syrup is too strong, the cleaning time is too long, the pure water replacement of the syrup and the rinsing tank is infrequent or the service life exceeds the specified time, and the pure water does not meet the standard and causes impurities to be scratched. The glass of the mirror surface silver should be vibrated and temperature, and the cleaning time should be lower and smaller than usual. The ink silver layer must be covered behind the mirror silver.
Standard cleaning and cleaning solution: one tank and two tanks, the temperature of the tank: 40-65 degrees, the same for the rinsing tank and the slow pull, the oven temperature is about 100-120 degrees, the temperature of each tank in winter is about +5 degrees, and the cleaning time per tank is 3- 5 minutes, the vibration size is full frequency per slot or 80% frequency. Pure water resistance is above 14 and the purity of pure water has a great influence on cleaning. If the water quality is poor, there will be many watermarks and white spots, and the overflow water should be medium in size. The syrup is preferably added from the rear storage tank, and then added after the temperature rises, and the mixture is uniformly dissolved and dissolved, and the syrup is replaced for 24 hours, and the rinsing tank is replaced with pure water for one shift.
1. If the white piece of glass excludes water quality, cleaning the syrup, the vibration is the biggest, the white piece is flattened and rubbed, etc. are all carried out in the water, the rinsing tank water has been replaced, etc., and there are white spots or watermarks, which are basically clean in the oven. The result is basically that the bottom of the bottom of the oven is dirty or the filter life is up. Clean the corners of each oven with a clean, dust-free cloth, glued with pure water or alcohol, and scoop the water with a scoop. The water is placed in the oven, and the oven fan is turned on to adsorb 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 clean, no use of non-foaming cleaning agent, after slowly pulling out, if the oven is well-made, even if the glass surface 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? And there are basically watermarks. 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 these dust and impurities, resulting in a firm adhesion to the surface of the glass lens. Even if the ultrasonic and syrup are not cleaned, the white spots and impurities will not be cleaned. Dust cloth and alcohol or white electric oil. Simply wipe the surface of the glass to loosen dust and other impurities, then take it to the ultrasonic cleaning machine for cleaning. Also, mix it with calcium carbonate and white oil and put it on the towel. Powdered, then flushed, and then washed on an ultrasonic cleaner, the effect can be significantly improved.
3, test white glass and silk screen finished glass, the test process can follow the test according to your lens production process, see which process in the glass lens will appear these problems, white spots, watermarks, scratches, collapse Whatever the side, 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 and so on. The effect ratio 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.
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