In the face of different needs of different industries, rollers also need to do the corresponding coating treatment, so as to improve or compensate the relevant performance of the roller. So what are the surface coating technologies for rollers? 01 Coating treatment The coating treatment of the drum includes zinc plating, chromium plating, nickel plating, etc. The different coating treatment can improve the hardness, corrosion resistance, oxidation resistance and wear resistance of the drum surface. It should be noted that the thickness of these coatings will also affect the performance of the roller. 02 Teflon coating Due to the characteristics of Teflon, the roller coated with Teflon has good high temperature resistance and anti-viscosity. Such rollers are easy to clean and can be widely used in the medical food industry. 03 Spray Painting The roller surface spray paint treatment can make the roller obtain a certain beauty. At the same time, this layer of surface coating can also play a certain role in delaying the oxidation rate of the roller surface. 04 Tungsten carbide treatment By high temperature plasma spraying technology, the roller surface formed a hard tungsten carbide coating. This coating has excellent wear resistance, but also has good high temperature resistance, corrosion resistance, so tungsten carbide roller in all kinds of machinery manufacturing, aerospace, automotive industry and other fields are also widely used. 05 Ceramic coating Ceramic coating has high hardness, wear resistance, chemical stability and other excellent properties, to provide an impenetrable protective layer for the drum, so that it is protected from corrosion and oxidation. Due to the high temperature resistance of the ceramic coating, the ceramic roller can be applied under high temperature conditions. 06 Hard oxidation Hard oxide film usually acts to enhance the surface hardness, wear resistance and other properties of the drum, thereby extending the service life of the drum. At the same time, it also has the effect of changing the surface color of the drum and improving the appearance of the drum. Therefore, the surface coating of the drum has many benefits, and their common goal is to increase the practicality of the drum, thereby improving production efficiency. For the choice of roller surface coating, it is also necessary to consider many factors. If you are confused about the coating choice of the roller, please contact Sinograce Chemical. As a non-stick coating manufacturer,Sinograce Chemical has been focusing on the manufacturing of industrial roll coating for many years, and can provide you with the best roll non-stick coating manufacturing solution.

First: the treatment of the substrate First, the substrate (aluminum, stainless steel or other metal substrate) is baked at high temperature (360℃×30 minutes ~380℃×10 minutes) to carbonize the grease or degreaser cleaning for the first step of degreasing. Step 2: Roughening the surface Available corundum sand 80#~120#, pressure 0.4~0.6mpa, sandblasting, so that the surface roughness of the substrate is :(2.0~3.5)μm Third: the spraying of Teflon primer Teflon primer must be fully rolled or mixed slowly with stirring blades before use (note: Do not use the shear blade to stir at high speed, otherwise it will destroy the structure of the paint and make the Teflon paint deteriorate), fix the treated substrate, and adjust the spray gun pressure to (0.2~0.3)mpa with (1.0~1.5) mm. Distance (20 to 30 cm, concentrate spray directly, use (120 ~ 160 ℃) x (8 ~ 15) minutes, table dry film thickness for 10 ~ 15 microns. Fourth: Teflon coating Teflon paint must also be fully rolled or slowly stirred with stirring blades before use, and the work piece that has been coated with the base oil can be cooled to room temperature (30-50 ° C is generally recommended). With a spray gun nozzle with a diameter of (1.0~1.5)mm, the pressure is adjusted to (0.2~0.3)mpa, the distance is (20~30)cm, the direct liquid spraying, drying at (120-150)℃×(5-8) minutes, sintering at 380℃×10 minutes, the total coating film after sintering is (20~25)μm. The most common problems are: Sintering is not sufficient, either the temperature is not enough, or the time is not enough, the surface of the baked workpiece is white, affecting the adhesion, and the physical property of the Teflon coating will be reduced. Excessive sintering will also make the coating performance deteriorate, so please be careful about construction

The most important difference between non-stick cookware and ordinary cookware is that the surface is coated with a layer of non-stick paint, and the Teflon non-stick cookware commonly used on the market is to coat the main raw material of fluorinated resin such as polytetrafluoroethylene coating on the metal surface such as aluminum, copper or iron, and through sintering. Properties of NI-PTFE coatings PTFE coatings can be applied to metal materials such as carbon steel, stainless steel, aluminum, copper, magnesium and various alloys, and can also be applied to non-metallic materials such as glass, glass fiber and some rubber plastics. The application of flon coatings is usually a combination of its own superior properties, including non-viscosity, low friction coefficient, moisture, extremely high surface resistance, high temperature resistance, chemical resistance, low temperature stability, etc. (1)The surface of the non-stick coating has a very low surface tension, and therefore shows a strong non-stick. Very few solid substances can stick to the coating permanently. Most materials are easy to clean on their surfaces, although the gelatinous material may have some adhesion to its surface. (2)PTFE has the lowest coefficient of friction among all solid materials, ranging from 0.05 to 0.2, depending on the surface pressure, sliding speed and the material of the coating. (3)The non-wetting coating surface is extremely hydrophobic and oleophobic, so cleaning is easier and more thorough. In fact, in many cases the coating appears to be self-cleaning. (4)The extremely high surface resistance can even have a certain conductivity after special formulation or industrial treatment, and can be used as an antistatic coating. (5)The high temperature resistant coating has extremely high temperature resistance and fire resistance, which is due to the high melting point and spontaneous combustion point of PTFE, as well as unexpectedly low thermal conductivity. PTFE coating operating temperature can reach up to 290 ℃, intermittent operating temperature can even reach 315 ℃. (6)Chemical resistance Generally, PTFE is not affected by the chemical environment. The only chemicals known to affect PTFE are molten alkali metals and fluorinated agents at high temperatures. (7)Low temperature stability, many PTFE industrial coatings can withstand the harsh absolute zero without loss of mechanical properties. PTFE industrial coatings can even be used at temperatures as low as minus 270 ° C. NI-PTFE coating is a unique high-performance coating, which is the organic penetration fusion of Teflon particles and nickel base. This coating process achieves the best combination of surface hardness, corrosion resistance and surface friction. The coating thickness can be as thin as 2.5μm, which can uniformly cover more complex workpiece surfaces. After heat treatment, the steel coating can reach HRC62, and the surface dry friction coefficient after coating can be reduced by 95%, f...

Rubber mold, silicone mold, shoe mold, latex pillow mattress mold, anti-stick easy mold Teflon spray, good model flon coating, non-stick mold surface treatment process The role of mold coating Molds are common tools in the manufacturing industry and are used to make a variety of products. In order to capture the service life and production efficiency of the mold, people often coat the surface of the mold with a special material, that is, the mold path layer. Die coatings have many functions 1.Wear resistance In the process of use, the mold will be subjected to friction, impact and wear and other forces, resulting in surface damage and deformation. Mold coating provides an additional layer of protection, reducing the impact of friction and impact on the mold. Effectively reduce wear and prolong the service life of the mold. The die coating can improve the hardness of the die surface and make it more resistant to wear The coating can reduce the coefficient of friction with the product material and avoid wear; A good coating can increase the surface smoothness of the mold and reduce the damage caused by surface roughness to friction 2.Anti-adhesion In the process of mold use, there are often product materials adhering to the surface of the mold, resulting in mold damage and the decline of product quality. The mold coating can effectively reduce the adhesion between the product material and the mold surface and prevent the occurrence of adhesion. The coating can reduce the friction coefficient between the product material and the mold surface, and reduce adhesion; The coating can improve the hydrophilicity or hydrophobicity of the mold surface, making it difficult for the product material to adhere to the mold: The coating provides a smooth surface and reduces the chance of adhesion. 3.Corrosion resistance Mold in the production process may be in contact with a variety of corrosive media, such as chemicals, acid and alkali solutions. The mold layer can prevent corrosion to a certain extent. The coating can isolate the direct contact between the mold and the corrosive medium, reducing the chance of corrosion; The coating has good corrosion resistance and can resist corrosion to a certain extent. Good coating can protect the mold surface and prevent surface damage caused by corrosion! 4.Enhance productivity By coating a layer on the surface of the mold, you are called to improve production efficiency and reduce production costs. Coatings reduce friction resistance and reduce energy loss: The coating reduces the adhesion between the mold and the product. Convenient demoulding, improve production speed. The coating can prolong the service life of the mold, reduce the evaluation rate of replacing the mold, and save the production cost In summary, mold coating plays an important role in industrial production, can improve the service life of the mold, reduce production costs, improve production efficiency, so the research and development and application of ...