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For uncomplicated or low-demand workpieces, manual scrubbing can be used(alumina polishing powder). The amount of side etching of copper can reach 1/5 of the etching depth. For workpieces with complex structures or high surface quality requirements, solvent vapor or ultrasonic cleaning can be used(black fused alumina). In the case of controlled etching, non-flammable chlorination is often used here. This requirement is also suitable for non-empty graphic etching.

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For thicker materials that require fine-grained feeding and etching, according to the experience of some factories, the front side of the completed pictures and text is sealed with protective tape, and the back side is etched(silicon carbide abrasive powder). After etching to half the thickness of the material, the Remove the protective tape on the front and etch both sides when asked(black aluminum oxide blast media). For workpieces with heavy pollutants, organic solvents should be used for cleaning before chemical degreasing.

(cheap aluminium oxide grit wholesale suppliers netherlands)Alkaline chemical degreasing is low-cost, easy to manage and operate, and has always been the first choice for metal degreasing(aluminum oxide blasting). Organic solvents have strong dissolving power for both saponified oil and non-saponified oil, and are fast, and generally do not cause corrosion on metal surfaces(black aluminium oxide). However, this method does not remove the oil completely, and requires a second chemical or electrolytic method to remove the oil.

The amount of side etching is generally about 1/3 of the etching depth(carborundum powder). In animal experiments, dichloroethylene has lower toxicity than other vinyl chlorides, high boiling point and high density, so it is the best. In the alkaline chemical degreasing process, the removal of saponified grease and dirt is mainly through the saponification of the dirt in the lye(pink fused alumina), so that it is separated from the metal surface and dissolved in the degreasing agent.

Gasoline is cheap, and it is also a common organic solvent for sleeve removal(silicon carbide grit suppliers). Chlorinated hydrocarbons are more toxic and generally not suitable for manual cleaning agents. Pay attention to safety when using solvents(black alumina). Because most organic solvents have low flash points and are easy to ignite, smoke and fire should be strictly prohibited at the use site, away from fire sources, and operators should take protective measures.(cheap aluminium oxide grit wholesale suppliers netherlands)

Trichloromethane, carbon tetrachloride, dichloroethylene, trichloroethylene, tetrachloroethylene, etc. are all commonly used solvent degreasing agents(white fused alumina). Carbon tetrachloride was used as a liquid degreasing agent earlier, but it is toxic and used more in industry. Because of its low boiling point and easy penetration, it is generally not suitable for steam degreasing(black synthetic corundum). Two, three, and tetrachloroethylene are all suitable for steam degreasing.

(cheap aluminium oxide grit wholesale suppliers netherlands)Because chlorinated hydrocarbons are more toxic, if the human body inhales these vapors in large quantities, it is harmful to health, so special non-leakage devices are required(carborundum grit suppliers). In order to vaporize vinyl chloride, heating vaporization or ultrasonic vaporization is usually used, but no matter which method is used, there is a condensation device above it to recondense the vaporized vinyl chloride(aluminium oxide polishing powder). In the washing process, no by-products that affect the washing effect are produced.