Seven characteristics of aluminum profile coating equipment and introduction of spraying equipment
The knowledge of spraying equipment needs to be learned like the sea, and we can't see the side from afar, but as long as we are willing to study hard, we can certainly see the invisible scenery and learn useful knowledge in the aluminum coating equipment. The knowledge we need to know in use is mentioned in the article for your reference. Seven characteristics of spray aluminum coating equipment: 1. It can cover the surface defects of the finished parts; 2. It is difficult to color the plastic parts themselves, and various colors can be obtained by spraying; 3. The electrostatic properties of the plastic parts are obtained. Improve, reduce dust adsorption; 4. Enhance the hardness and scratch resistance of plastic parts; 5. Improve the weather resistance of plastic parts; 6. Adjust the gloss of the surface of plastic parts freely; 7. Sand paint, fluff paint Wait for some special paint to get a better appearance and feel. Introduction to spraying equipment: Air spraying equipment: Air spraying is a spraying method using compressed gas as atomizing power. Air spray is the simplest method of spraying and has been around for hundreds of years, but it is still in common use. Mainly because of its low cost, simple operation, adjustable spray width, and the best spray results. However, the shortcomings of air spraying are also obvious. The paint utilization rate is low, and the paint transfer efficiency is only about 30%, which not only wastes the paint, but also causes considerable pollution to the environment. Since the paint is in direct contact with the compressed air, the compressed air is required to be purified, otherwise the moisture and oil in the compressed air may be mixed into the paint, which may cause bubbles and fainting of the coating. High-pressure airless spraying equipment: The working principle of high-pressure airless spraying is to pressurize the paint to several hundred kg/cm2 through a booster pump, atomize the paint into fine particles through the nozzle, and directly spray it onto the surface of the coated object. Spraying method. The spraying efficiency is above 300m2/h, which saves manpower and man-hours. The high-pressure airless spraying adopts high-pressure jet atomization to obtain strong kinetic energy of the paint particles, and the paint particles can be used to illuminate the gaps of the workpiece, thereby making the coating denser, the mechanical biting force with the workpiece is enhanced, and the adhesion is improved. Effectively extend coating life. Http://news.chinawj.com.cn
R32, is increasingly gaining favour as a low temperature refrigerant and as a replacement gas in some R410A applications. R32 has a low GWP, providing a lower carbon footprint than most other HFCs.
R32 has a better system efficiency, and it needs a smaller refrigerant charge. The significant problem is that R32 has a high discharge temperature. Its direct consequence is the oil degradation which can cause various compressor failures like bearing seizure, low system and compressor efficiency. So the discharge temperature should be limited at an acceptable level to make sure that system and compressor could work normally. Usually is to control discharge temperature by refrigerant.
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ZHEJIANG ZHONGLAN REFRIGERATION TECHNOLOGY CO.,LTD , https://www.uiszl.com