Common knowledge of coating: what kind of sanding equipment should be selected for coating paste production

Core tip: after the paint engineer has determined the color paste formula, he should pay attention to the production process of color paste, because this is the premise of producing excellent quality color paste The following will be introduced by the engineers of automotive paint house on the current commonly used sanding equipment, so as to select the appropriate sanding equipment in the grinding process In the coating industry, there are many grinding and dispersing equipment, among which horizontal sand mill, vertical sand mill, ball mill, three roller machine and basket type sand mill are widely used Small volume, small space, continuous high-speed dispersion, high efficiency, simple structure and convenient operation Paint knowledge how about Akzo Nobel Powder Coating Recommended introduction: powder coating is a kind of coating with different form from general coating, which is in powder form It is a new type of coating, because of its own advantages and more and more known by people Let's introduce Akzo Nobel Powder coating Akzo Nobel Powder coating is a cost-effective coating solution, which can be applied to different kinds of products After the treatment of static electricity and fire baking, a tough and durable coating surface will be formed, with the least impact on the environment Since the introduction of this technology, powder coating has been able to continue to maintain the Home of coatings: after the coating engineer has determined the color paste formula, he should pay attention to the production process of color paste, because this is the premise of producing excellent quality color paste The following will be introduced by the engineers of automotive paint house on the current commonly used sanding equipment, so as to select the appropriate sanding equipment in the grinding process In the coating industry, there are many grinding and dispersing equipment, among which horizontal sand mill, vertical sand mill, ball mill, three roller machine and basket type sand mill are widely used The sand grinder has the advantages of small volume, small space, continuous high-speed dispersion, high efficiency, simple structure and convenient operation At present, it is widely used in the paint industry, with the disadvantages of difficult color change and low flexibility At present, the sand mill has developed from open type to closed type, which can minimize the volatilization of materials in the production process, and at the same time, it can not exceed 0 Under the pressure of 3Mpa, the operation under pressure can adapt to the color paste with high thixotropy and poor fluidity, increase the content of pigment in the paste and further improve the dispersion efficiency The difference between horizontal sanding machine and vertical sanding machine horizontal sanding machine has larger sand loading capacity, higher grinding efficiency, and relatively convenient disassembly and cleaning At present, the proportion of closed horizontal sanding machine used in the coating industry has gradually increased Basket type sanding machine is a new type of sanding machine developed in recent years It is to place the abrasive paint in the mixing barrel, and to grind and disperse the basket with abrasive media and mixing knife into the paint Its features are: 1 It is suitable for small batch and multi product operation; 2 Paint premixing, grinding dispersion and coating can be completed in the same mixing tank The disadvantage is that the dispersion efficiency is generally low and the dispersion time is long Therefore, it is very suitable for the preparation of color paste of small batch products Ball mill is an old dispersing equipment It is to put ceramic beads or pebbles into a steel grinding cylinder as grinding medium, drive the motion of grinding medium through the rotation of the cylinder, and realize the dispersion of pigment through the impact, shear and other functions It has the advantages of premixing paint materials, grinding and dispersion can be realized in the same tank, and closed production can be realized at the same time It has a good effect on dispersion of pigments (such as carbon black, iron blue, etc.) which are easy to return to coarseness and thickening The disadvantage is that the dispersion efficiency is very low, and each batch of paint is not easy to put clean, color change is very difficult, noise is very large, and high viscosity slurry cannot be processed In the past, it has been widely used in high-grade solvent based automotive coatings, but due to its more disadvantages and the continuous improvement of the preparation technology of sanding machine, its application scope in the coating industry is becoming less and less The three roller machine is composed of three steel rollers Driven by the motor, the front and back rollers rotate forward, and the middle roller rolls backward The paint is placed in the middle of the roller, and the gap between the rollers is used to realize the shear dispersion of the pigment It is characterized by large shear force, which is very suitable for the production of high viscosity paint The disadvantage is that it can not be produced continuously, and the production is open type, the general materials are volatile, and the manual operation labor intensity is large At present, the application is more and more limited Based on the above, in the current coating production, we generally choose the closed horizontal sanding machine, especially for the water-based coating color paste, the jacket and material used are all made of stainless steel, which can prevent the equipment from rusting and corrosion, and at the same time prevent the rusting substances from entering the paint, affecting the product quality Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,