Energy -saving and Environmentally Friendly Building Aluminum Powder Powder Coating Technology and Application! -Ruminum Profiles Supplier

The aluminum profile has the characteristics of low density, light weight, strong processability and plasticity, and is widely used in the fields of construction, home decoration and decoration. Since 2006, my country has surpassed the United States and has become the world's largest production and sales country in the world. According to statistics from the official website of China Nonferrous Metal Industry Association, the global electrolytic aluminum output in 2017 was about 63 million tons, while the output of Chinese aluminum materials reached 19.5 million tons.

Aluminum profiles account for about 70 %.

Although aluminum profiles can form a dense Al2O3 oxide film in the air and have good self -repair performance, the oxide film is very thin, and the protection of aluminum profiles is limited, which will affect the service life and appearance of the profile.

Therefore, aluminum profiles need to be treated with certain surface protection: on the one hand, it can improve the abrasion resistance and corrosion resistance of aluminum profiles and extend the service life.

On the other hand, they can improve a small amount of surface defects caused by aluminum profiles in the processing process, and provide a variety of rich surface decoration effects, which improves the beauty of the profile. At present, the surface treatment methods of aluminum profiles are mainly anode oxidation, electro -swimming and powder painting. These three methods have their own advantages and characteristics, and each occupy a considerable market share in the market. Anode oxidation is a method that uses electrolytic oxidation principles to form oxide film on the surface of aluminum profiles.

The oxide films prepared through this method have high abrasion resistance, good thermal insulation and corrosion resistance, and can meet the requirements of the use of the mainland climate environment. Typical sulfuric acid anode oxidation technology includes: mechanical pre -treatment, chemical pre -treatment, anode oxidation, coloring and sealing. The electrophoresis coating process is basically the same as the anode oxidation technology. The difference is that the electrophoretic coating process has replaced the sealing process with the electrophoresis coating process after the anode oxidation process, thereby further improving the weather resistance and corrosion resistance of the film. Requires as offshore. Powder coating is a coating method that uses the principle of electrostatic discharge to make atomize coatings with negative power under the action of a high -voltage DC electric field, and adsorb on the surface of the substrate with a positive electricity for discharge. In order to improve the binding force and corrosion resistance of the coating, aluminum profiles are usually prepared before spraying.

For example: chromate conversion rate or chromate -free conversion rate. Compared with anode oxidation and electrophysis, the coating prepared by the powder spray process has no obvious advantages in appearance uniformity and weather resistance, but its abrasion resistance, acid resistance, flexibility and decoration are obviously superior.

Preparation through anode oxidation and electrophoretic coating.

In addition, due to the simple powder spraying process, it has obvious advantages in energy conservation and environmental protection. The power consumption per ton of anode oxidation can reach about 1,000 degrees. The anode oxidation, coloring and sealing, and the electrophoresis process need to use a large amount of acid, alkali and nickel salts, etc. The post -treatment pressure of wastewater and waste gas is very high. The pre -treatment of powder coatings is mainly skilled and passivation. Energy consumption is mainly reflected in the curing process of coatings, which greatly reduces energy consumption; and powder coatings do not contain solvents, VOC emissions are almost zero, and environmental pressure is small. It has become one of the aluminum coating technologies with widespread prospects.

1. High reflectance energy saving powder can make coatings that produce temperature adjustment effects under solar light. High reflectivity energy -saving powder has excellent weather resistance and good near -infrared reflection characteristics, suitable for outdoor building applications, especially occasions that need to strengthen sunlight or near -infrared reflection, such as the exterior walls, roofs, doors and windows and large curtain walls of the building Single boards, etc. It can effectively reduce the temperature in the building and reduce the energy consumption of air -conditioning refrigeration. At the same time, the low surface temperature will reduce the coating film bending, deformation and partial damage caused by the thermal expansion of the coating film.

Therefore, the coating can delay the thermal aging of coating color, gloss, elasticity and other physical properties.

In addition, the coating also has energy saving and consumption reduction effects, especially in areas where winter is colder. This coating can further hinder the rapid exchange of calories inside and outside the window.

In addition, the insulation of the broken bridge can make the door wall system achieve a good thermal insulation effect.

2. Self -cleaning function pink introduces high -molecular full fluoride polyether and active nano -al2O3 particles into the coating structure. The FC bond of full fluoride polyether has a very low surface energy and the small -sized effects of active nanoparticles, which shows extraordinary bilaterality on the surface of the coating. Inorganic dust in the air usually has a certain polarity, cannot form a strong adsorption on the surface of the ultra -hydrophobic, and is easily washed away by rain. Even if the surface of the coating is absorbed by organic matter, the ultra -light catalytic activity of nanoparticles can be used to eventually decompose organic matter into CO2, H2O, H2SO4, HNO3 and other easy scrubbing substances.

Therefore, this powder can ensure that the surface of the coating is as clean as the new ones. Powder coatings are usually used in curtain wall products, which can achieve the overall cleaning function when combined with self -cleaning glass.

3. The heating equipment in the spraying process of the residual heat use of the technical powder includes pre -processing and post -processing drying furnace, pre -curing furnace and curing furnace, and the pretreatment solution is also equipped with constant temperature heating equipment. After pre -processing, the temperature of the drying furnace is usually 95 C, and the temperature of the furnace is usually 180 C. There is a large temperature difference between these two processes.

WJW Aluminum Supplier established a waste heat recovery system to control solidification. Under the premise of the furnace temperature, the waste heat of the furnace of the furnace is passed to the pre -processing dry furnace. The residual heat recovery of the furnace is achieved, and the purpose of energy saving and consumption reduction is achieved, and the effect is more obvious. In the production process of aluminum profiles, many waste heat can be used, such as melting furnaces, average furnace and cast rods. The range of residual heat use is also wide.

If the demand for flue gas is not high, it can be used directly to heating the flue gas, such as heating in the dry furnace after pre -processing, and you can use heat exchange to heal hot water tanks or heating of the anode oxidized.

In addition, large aluminum factories now use natural gas and have good quality of flue gas, which makes the use of waste heat easier.

Usually, the reasonable use of residual heat can save energy and reduce consumption.