[China Aluminum Industry Network] 1 Foreword Aluminum coating organic coating surface treatment process will inevitably appear unqualified coating quality products, such as electrophoretic coating defects often appear low film, yellowing, particles, bubbles and other defects, powder electrostatic spray often appear pinholes, bubbles Defects such as granules, strands, and cross-colors, if they are scrapped, will inevitably affect the yield and timeliness of delivery, resulting in unnecessary losses. Therefore, more and more aluminum companies are concerned about how to remove unqualified coatings on aluminum and recycle substrates for rework. In addition, in order to ensure the electrical conductivity of the workpiece during the electrostatic spraying process, the spray coating tool is also subjected to a peeling treatment of the organic coating. Aluminum stripping organic coating methods can be roughly divided into three categories: chemical methods, pyrolysis methods and mechanical methods. The chemical release method uses an etchant, a solvent or a combination of the two; the pyrolysis method utilizes a high temperature furnace, an open flame, a hot fluidized bed, a molten salt bath, and a laser to perform the release treatment; a mechanical release method uses a high pressure water, an abrasive medium , Brushes, Mills, Scrapers, Cutting Machines, Low Temperature Processing, etc. 2 Chemical stripping The working principle of the chemical release agent is to soften or dissolve the coating film, to break the connection between the coating film and the substrate, and then the loose coating film is mechanically removed. Chemical release agents can be classified according to operating temperature (hot or cold) and can be classified according to their composition, such as corrosives (acidic or basic), solvents or corrosive/solvent combinations. The corrosive agent stripper generally uses a heating process, and the stripping temperature reaches 80 to 100°C. Solvent-based chemical release agents use a cold process and operate at or near room temperature. Solvent-based chemical release agents are usually liquids obtained by mixing solvents such as chlorinated hydrocarbons, ketones, esters, alcohols, and benzenes. The use of a solvent to osmotically swell the overcoat layer can effectively remove various aluminum surface-treated coatings, and it is easy to directly peel the coating film or peel off the coating film. The release of the release agent is achieved through a series of physical and chemical processes such as dissolution, infiltration, swelling, exfoliation, and reaction. There are many chemical release agents that are currently commercially available. The advantages of chemical stripping agents are the variety of formulations and the ability to remove highly durable coatings such as acrylics, epoxies, polyesters, and polyurethanes with minimal impact on the aluminum substrate. The disadvantages are potential health and environmental hazards related to the use of corrosive materials, chlorine-containing solvents, and flammable solvents. Corrosive release agents are usually acidic and are strippers composed of strong acids such as concentrated sulfuric acid, hydrochloric acid, phosphoric acid and nitric acid. Concentrated hydrochloric acid and nitric acid are easily volatile to produce acid mist and corrode the aluminum base material. Concentrated phosphoric acid stripping takes a long time and has a corrosive effect on the substrate. Therefore, the above three acids are used less frequently. Concentrated sulfuric acid and aluminum, iron and other metals passivation reaction, the corrosion of aluminum is very small, while the organic matter has a strong dehydration, carbonization and sulfonation to make it soluble in water, so concentrated sulfuric acid is often used as acid stripper . Because solvent-based mold release agents are cold, ie, operate at or near room temperature, they are slower than hot, corrosive release agents and take longer to coat. Therefore, a combination of release agent came into being. The combined release agent formulation uses corrosive materials and solvents that combine the advantages of both. They can remove the more durable and chemical resistant coatings. They can operate at or near room temperature, operate at a temperature below the boiling point of the solvent, and have a speed of action between the corrosive release agent and the solvent-based release agent. Domestic products have been listed, the use of good results. A toilet tank, also known as a hidden cistern, is a modern plumbing fixture used in bathrooms and toilets. It is designed to hide the flushing mechanism behind a wall or inside a piece of furniture, providing a sleek and minimalist look to the bathroom space.
Concealed cisterns come in various designs and sizes to accommodate different installation requirements. They are usually made of durable materials such as ABS plastic or stainless steel to ensure longevity and resistance to water damage. The tanks are equipped with a water inlet valve, a flushing mechanism, and an outlet pipe connected to the toilet bowl.
In addition to the aesthetic benefits, installation systems also offer practical advantages. They are typically equipped with dual-flush mechanisms, allowing users to choose between a full flush for solid waste and a partial flush for liquid waste. This dual-flush feature helps in conserving water by reducing the amount used for each flush, contributing to water efficiency and environmental sustainability. Toilet Tank, Installation System,Toilet Water Tank,Toilet Cistern, Concealed Cistern Guangdong Fabia Intelligent Technology Co., Ltd , https://www.fabiaintelligent.com
The main purpose of a concealed flush tank is to save space and create a clean aesthetic by concealing the unsightly plumbing components typically associated with traditional exposed cisterns. By integrating the flush tank within the wall or furniture, only the flush buttons or plates are visible to the user.
Installation of a concealed cistern requires professional plumbing expertise, as it involves cutting into the wall and connecting the tank to the toilet bowl. However, once properly installed, the maintenance and upkeep of a concealed toilet tank are relatively straightforward.