Amorphous Coated Paper Sizing Roll

       The paper machine sizing configuration is a device for surface sizing the paper web on the paper machine. It consists of a rubber-coated roller and a chrome-plated roller. It is generally installed at the rear of the drying section of the paper machine, where the moisture content of the paper web is basically close to the air-dried state. Used on paper machines that produce cultural paper, printing grade and kraft paper, the performance of the sizing roller of the sizing machine is directly related to the sizing effect of the paper.



There are many types of surface sizing agents, but they can be summarized into two categories: natural polymers and synthetic polymers. Natural polymer products have the advantages of wide source, low price and easy biodegradation. The modified starch has low viscosity, and can maintain good solubility, adhesion, and ability to synthesize film. When used as a paper surface sizing agent, it can significantly improve the strength and smoothness of the paper, and improve the printing performance of the paper. The added auxiliaries are called papermaking sizing agents. Aiming at the characteristics of high efficiency, controllability and convenient use, the biological sizing enzyme developed from common starch is widely used in the papermaking industry. It converts starch high polymer into low molecular polymer, so as to meet the requirements of reducing starch glue viscosity, so as to be suitable for It is specially used for surface sizing commonly used in the paper industry. At present, the commonly used sizing agent in the paper industry is oxidized modified starch. The traditional chemical production process of oxidized modified starch has disadvantages such as high cost, difficult to control the degree of oxidation, and environmental pollution. The process of treating starch with biological sizing enzyme can overcome the shortcomings of the traditional process.

wococarbide.com conducts in-depth research on the working conditions of the sizing roller, adopts supersonic arc spraying iron-based amorphous alloy materials, and technically develops and designs the sizing roller with amorphous coating. The coating thickness is 0.6-0.8mm, and the coating hardness is above HRC75. The temperature resistance can reach 800℃, the low temperature can reach -40℃, the friction coefficient is 0.05-0.12, the roughness is less than or equal to 0.4um, and the service time is more than 3 times that of ordinary chrome-plated rollers. The formed coating has high strength, high hardness and high temperature resistance. , Anti-wear and anti-friction, anti-corrosion, anti-cavitation characteristics. This design effectively reduces the replacement times of the rollers of the sizer, improves the quality of the sizer, prolongs the service life of the related equipment, and ensures the normal operation of the sizer. Reduce the overall operating cost of the sizer.