Paper Printing

Papermaking field

Improve surface hardness and wear resistance: The dryer is a key equipment used to dry paper in the papermaking process, and its surface needs to withstand the friction of the paper and the high temperature and high humidity environment. Spraying ceramic or cermet coatings, such as alumina and zirconia ceramic coatings, on the surface of the dryer through thermal spraying technology, can significantly improve the hardness and wear resistance of the dryer surface, reduce the surface wear caused by paper friction, and prolong the service life of the dryer.
Improve surface finish: Thermal spraying can make the surface of the dryer get a better finish, help the uniform drying of the paper on the surface of the dryer, improve the drying quality of the paper, and reduce the defects and wrinkles on the surface of the paper. At the same time, the smooth surface also reduces the adhesion between the paper and the dryer, making it easier for the paper to peel off the dryer smoothly, improving production efficiency.
Enhanced corrosion resistance: During the papermaking process, the paper rollers will come into contact with various chemicals and wet pulp, which is prone to corrosion. The use of thermal spraying technology to spray corrosion-resistant metal or alloy coatings on the surface of paper rollers, such as stainless steel, nickel-based alloy coatings, etc., can effectively prevent paper rollers from being corroded, ensure their dimensional accuracy and surface quality, and thus stabilize the production quality of paper.
Adjust the surface properties: According to the needs of different papermaking processes, coatings with specific properties can be formed on the surface of papermaking rollers through thermal spraying, such as anti-slip coatings, anti-static coatings, etc. The anti-slip coating can increase the friction between the paper roller and the paper, ensure that the paper does not slip during the transmission process, and improve the stability of the paper transmission; The anti-static coating can prevent the paper from absorbing dust or sticking due to static electricity during the production process, and improve the quality and production efficiency of the paper.
Repair of worn parts: The grinding discs and other parts of the refiner will be worn out due to strong friction with the fiber raw materials during the working process. Thermal spray technology can spray wear-resistant metal or alloy materials onto the surface of worn discs, restoring their size and performance, extending the life of the discs and reducing equipment repair costs and downtime.
Improve wear resistance: spraying tungsten carbide and other wear-resistant coatings on the surface of the impeller, shell and other parts of the refiner can improve the wear resistance of these parts, reduce the damage of parts caused by slurry erosion and wear, improve the working efficiency and stability of the refiner, and ensure the quality of refining.

Printing field

Improve hardness and wear resistance: The printing roller needs frequent contact and friction with the printing plate and paper during the printing process, and the thermal spraying technology can spray cemented carbide coating or ceramic coating on the surface of the printing roller, improve the hardness and wear resistance of the printing roller surface, reduce wear, and ensure the accuracy and stability of the printing roller, so as to improve the printing quality and registration accuracy, and make the printing pattern clearer and more accurate.
Realization of special functions: Coating with special functions, such as ink repellent coatings or ink repellent coatings, can be prepared on the surface of the printing roller by means of thermal spraying. The ink-loving coating can make the printing roller better adsorb ink, improve the ink transfer efficiency, and ensure the saturation and uniformity of the printing color; Ink-repellent coatings can be used to make some special printing patterns or areas to achieve selective printing and enrich the types and effects of printed products.
Enhance printing resistance: The printing plate cylinder is an important part of the printing machine, and its surface quality and performance directly affect the installation and printing effect of the printing plate. Thermal spraying technology can spray a layer of coating with high hardness and good wear resistance on the surface of the printing plate cylinder, such as chrome plating coating, titanium nitride coating, etc., to improve the printing resistance of the printing plate cylinder, reduce the damage to the cylinder surface caused by the friction in the printing plate replacement and printing process, and ensure the accuracy and surface flatness of the printing plate cylinder, so as to improve the stability of printing quality.
Improved heat dissipation: In the process of high-speed printing, the printing plate cylinder will generate heat due to friction, etc., which will affect the printing quality. Spraying coatings with good heat dissipation performance on the surface of the printing plate cylinder, such as aluminum-based composite coating, can improve the heat dissipation efficiency of the printing plate cylinder, reduce the surface temperature of the cylinder, avoid problems such as plate deformation or ink drying too fast due to high temperature, and ensure the smooth progress of the printing process.