Screen printing panel question and answer (seventh) Q: What are the characteristics and uses of aluminum oxide signs? A: The main characteristics of aluminum oxide signs are good wear and corrosion resistance, mainly used in machine tool signage instrument panel, advanced cosmetic box, ballpoint pen Cap and so on.
Q: What equipment is needed to make aluminum oxide signs? Answer: 1. The equipment for pre-treatment of aluminum plates is degreasing washing machine, polishing machine, sand brushing machine and brushing machine.
The aluminum oxidation equipment is a plastic tank, a silicon rectifier, a cooling device, a plate for oxidation, a tooling, an oxidizing solution, and the like.
The equipment after aluminum oxidation is processing equipment, screen printing equipment, etching equipment, dyeing tank.
Other equipment includes cutting machines, punching machines and stamping equipment.
Q: What is the current common process for making aluminum oxide signs, pre-treatment - anodizing and sealing - baking screen printing text forming.
The secondary oxidation method is: aluminum plate - pretreatment - anodizing coloring - sealing screen printing text stripping (removing oxide film) - second oxidation coloring sealing and cutting forming.
Q: There are several kinds of oxidation methods for aluminum oxide production signs. â–¡ Zhao Xinfeng soft is suitable for stamping and embossing.
Oxidation of room temperature direct current sulfuric acid solution, suitable for coloring and dyeing.
Low-temperature sulfuric acid oxidation, the oxide film is fine and hard, suitable for printing high-grade dyes.
Sulfuric acid oxalic acid mixed acid oxidation, used in general aluminum products.
The anodized surface of aluminatic acid and boric acid for porcelain oxidation is a porcelain needle with a porcelain state.
Q: What are the methods for coloring oxide film, and what kinds of dyes are available. A: There are two kinds of dyeing methods: dip dyeing and printing. The printing and dyeing are divided into two types: infiltration printing and dispersion printing. The dyes are acid dye, reactive dye and indoline. dye.
Q: Which chemical materials are commonly used in the production of aluminum oxide signs, A: metal degreaser, sulfuric acid, nitric acid, chromic acid, caustic soda, acetic acid, acid dyes, reactive dyes, printing inks, resist inks, etc.
Q: What are the methods for sealing the oxide film? Q: What methods are commonly used for the treatment of aluminum sand surface, and the machine is used for sandblasting.
Brushing method, the round copper wire brush rotates, and the bottom is conveyed. Take the aluminum plate and move forward while pulling the left and right sides to get the sand surface.
The sanding method, the aluminum plate which is eliminated by offset printing, is ground with a glass ball of fine sand, and the water is ground to obtain a fine and smooth sand surface effect.
Chemical sand surface treatment, a specialized chemical sand surface treatment agent, through the chemical treatment to obtain the sand surface effect.
Q: What are the common chemical polishing and smokeless polishing formulations? A: Chemical polishing uses phosphoric acid, nitric acid, and sulfuric acid in proportions and electropolishing. Phosphoric acid, glycerin is used to match, but it must be powered. These two methods are not safe for the environment and individuals. Therefore, there is now a method of using smokeless polishing, that is, adding an additive to the solution to inhibit the generation of yellow smoke. Its formulation is formulated with three solutions of sulfuric acid, phosphoric acid and WXP. No matter which method you use for polishing, you must wear gloves (acid resistant), masks, aprons, and pay attention to safety.
Q: After aluminum oxidation, the surface soldering has no oxide film or part of the appearance of colored flowers. A: 1. Before the oxidation, the oil is not clean and the partial oxidation of the aluminum parts is not good.
The card used for oxidation shows a tightly packed area that is not oxidized.
The temperature in the oxidation tank is too high, and the oxidation time is too short, which is also prone to this problem.
Q: After the surface welding is oxidized, there is no color or flower-like reason. How to solve it? A: After oxidation of the aluminum plate, the color or color is not dyed or the oxide film is too thin, and the temperature and acidity of the dyeing solution are not enough. The solution is to remove the oxide film and re-oxidize. It is best to use low-temperature oxidation method. The preparation of the dyeing solution needs to be prepared with distilled water and the temperature is adjusted. These problems are solved.
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