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 ...

PTFE coatings (polytetrafluoroethylene) are non-stick, fluoropolymer containing high temperature coatings, they have a single coating system or a double coating system of primer and top coat, and have a variety of properties. The Teflon spray process is an important surface treatment that gives objects outstanding properties. With the right preparation, spraying procedures and techniques, Teflon sprayed coatings of high quality can be achieved. So, do you know how Teflon paint is sprayed? What are the spraying methods of Teflon paint? What are the advantages of Teflon paint? Spray-Painted Method There are two main spraying methods for Teflon coatings: dispersion coating and powder coating. Dispersion coating The processing method of dispersion coating is a wet processing method in which the coating material is evenly distributed in the solvent to form a dispersion liquid (solid substance mixed in the liquid). This mixture is atomized by high-pressure air and sprayed on the surface of the workpiece. The specific spraying process is divided into several steps: preparation of workpiece - spraying of wet dispersion coating - drying - sintering. (1) Wet dispersion coating spraying: spraying coating materials must be uniform; And depending on the coating system used, the coating thickness can vary from a few microns to 200 microns. (2) Drying is to heat the wet coating in an oven at a temperature controlled below 100°C until most of the solvent has evaporated. (3) Sintering is to heat the workpiece to a higher temperature until an irreversible reaction occurs and the coating material melts with the bonding agent to form a network structure. Powder Coating The powder coating is a dry process in which the powder particles are attached to the workpiece and then the coated powder is melted in the oven. The coating material used here is in the form of small solid particles. The use of this coating method avoids the divergence phenomenon that occurs when the solvent is used and the subsequent coating is attached. The processing of powder coating is divided into the preparation of the workpiece - powder spraying - powder melting steps, among which, powder spraying refers to the powder particles blown out of the collector by compressed air, there is a section of electrostatic area on the way to the spray gun nozzle, the powder particles are attracted by the workpiece and attached to it. But no matter what kind of spraying method, one thing needs to be done first in the spraying process - the preparation of the workpiece, that is, in order to obtain sufficient surface adhesion of the workpiece surface, it is necessary to remove all the grease on the surface to be coated. We use organic solvents to dissolve oils and fats and heat them to about 400°C to completely volatilize them. Next, the mechanical way of sandblasting is used to clean the parts and make the surface rough, and the bonding ability of the coating and the surface of the workpiece ca...