Technology

In terms of metal material adaptability, high-pressure airless spraying can treat a variety of metal surfaces, including carbon steel, stainless steel, aluminum alloys, and zinc alloys. For severely corroded steel surfaces, after sandblasting to Sa2.5, high-pressure airless spraying of an epoxy zinc-rich primer ensures a good bond between the primer and the substrate, enhancing corrosion protection. High-pressure airless spraying offersMore

Metal high-pressure airless spraying High-pressure airless metal spraying is a coating technology that uses a high-pressure pump to pressurize the paint to 15-30 MPa, atomizes the paint through a special nozzle, and sprays it onto the metal surface to form a coating. Unlike traditional air spraying, this technology does not require compressed air to assist in atomization. Instead, it reliesMore

Application examples of metal surface conversion coating The metal surface conversion film is a compound film that is generated on the metal surface by chemical or electrochemical methods and is firmly bonded to the substrate. Its main function is to improve the corrosion resistance of the metal, enhance the bonding strength with the coating, or give the surface specific physicalMore

Flame spraying technology Flame spraying is a surface modification technique that uses the thermal energy of a combustion flame to heat the spray material to a molten or semi-molten state, then sprays it onto the substrate via a high-speed airflow to form a coating. Since its introduction in the early 20th century, this technique has been widely adopted in industryMore

Flame spraying process Flame spraying is one of the earliest and most widely used thermal spraying techniques. It utilizes a high-temperature flame generated by gas combustion to melt the spray material. Compressed air then atomizes the molten material into fine particles, which are then sprayed at high speed onto a pretreated substrate, forming a coating with specific properties. This processMore

Chromate passivation and chromate film Chromate passivation and chromate film are two closely related concepts in metal surface treatment. Chromate passivation is the process of forming chromate film, and chromate film is the product of this process. The two together constitute an effective metal protection system. Chromate passivation is a process in which a metal workpiece is placed in aMore

Chromate passivation process The chromate passivation process is a systematic surface treatment technology that includes three main steps: pretreatment, passivation, and post-treatment. The control of process parameters in each step directly affects the quality and performance of the passivation film. The purpose of pretreatment is to remove impurities such as oil, scale, and rust from the surface of the metalMore

Chromate passivation Chromate passivation is a surface treatment technique that improves corrosion resistance by immersing metal workpieces in a chromate solution, where a chemical reaction forms a passive film primarily composed of chromate. This technique is particularly suitable for metals such as zinc, cadmium, aluminum, steel, and their alloys, and is most widely used in the post-treatment of galvanized steel.More

Application examples of steel oxide film Iron oxide films have a wide range of applications in the industrial field. Formed on the surface of steel through chemical or electrochemical methods, these films can effectively improve the corrosion resistance, wear resistance, and decorative properties of steel, playing a key role in different scenarios. In the machinery manufacturing industry, many precision partsMore

Common troubleshooting methods for steel phosphating During the steel phosphating process, various faults often occur due to improper process parameter control, changes in phosphating solution composition, and incomplete pretreatment, affecting the quality and performance of the phosphating film. Common faults include coarse phosphating film crystals, loose film layers, partial absence of film, film smearing, and rust. These faults not onlyMore

Phosphating process for steel The phosphating process for steel is a systematic process encompassing three main stages: pretreatment, phosphating, and post-treatment. Each stage has stringent process requirements that directly impact the quality and performance of the phosphate film. The purpose of pretreatment is to remove impurities such as oil, rust, and scale from the steel surface, ensuring uniform and continuousMore

Phosphating of steel Phosphating steel is a surface treatment technique that creates an insoluble phosphate film on the steel surface through a chemical reaction. This film, commonly referred to as a phosphate film, is primarily composed of phosphate compounds such as iron phosphate, zinc phosphate, or manganese phosphate. Phosphate films typically range in thickness from 1 to 50 microns andMore

Chromate passivation of steel is a surface treatment process that immerses the steel workpiece in a chromate solution and uses a chemical reaction to form a passivation film with chromate as the main component on its surface, thereby improving the corrosion resistance of the steel. This passivation film is usually 0.5-2μm thick and has an amorphous or crystalline structure. ItMore

Principles And Characteristics Of Metal Thermal Spraying Metal thermal spraying is a surface enhancement technology that uses a heat source to heat a metal material to a molten or semi-molten state, atomizes it into tiny particles with the help of a high-speed airflow, and sprays it onto the surface of a substrate to form a coating. Its core principle isMore

Principles and characteristics of metal thermal spraying Metal thermal spraying is a surface enhancement technology that uses a heat source to heat a metal material to a molten or semi-molten state, atomizes it into tiny particles with the help of a high-speed airflow, and sprays it onto the surface of a substrate to form a coating. Its core principle isMore

Powder coating technology Powder coating technology involves applying solid powder coating to a workpiece’s surface through electrostatic adsorption or fluidized bed dipping. The coating then melts, levels, and solidifies to form a continuous coating. Compared to traditional liquid coating, this technology boasts high coating utilization (over 95%), zero volatile organic compound (VOC) emissions, and superior coating performance. It has becomeMore

Powder flame spraying Powder flame spraying, a key branch of thermal spraying technology, utilizes a high-temperature flame generated by the combustion of a mixture of combustible gases (such as acetylene and propane) and oxygen to heat the spray powder to a molten or semi-molten state. Compressed air then atomizes the powder and sprays it at high speed onto the substrate,More

Hard anodizing in non-sulfuric acid solutions Hard anodizing in non-sulfuric acid solutions is relative to traditional sulfuric acid solutions. It uses other acid solutions such as oxalic acid, phosphoric acid, chromic acid, etc. as electrolytes. It is a hard anodizing process developed for specific materials and performance requirements. This type of process can overcome the limitations of sulfuric acid solutionsMore

Electrophoretic coating technology Electrophoretic coating technology is a highly efficient and environmentally friendly coating method. Since its introduction in the 1960s, it has become a mainstream coating technology in the automotive, home appliance, and building materials industries. Its core advantage lies in its ability to achieve uniform coating on complex workpieces. Compared to traditional spray coating, it offers enhanced coverageMore

Principle and process of electrophoretic coating The core principle of electrophoretic coating is based on the synergistic effects of colloid chemistry and electrochemistry. An applied electric field is used to induce the directional migration of charged paint particles in water and their deposition on the workpiece surface. The paint particles, in water, are transformed into charged colloidal particles by theMore

Characteristics of electrophoretic coating As an efficient coating technology, electrophoretic coating has the remarkable characteristic of good coating uniformity and can form a coating with uniform thickness on the surface of complex-shaped workpieces. Traditional spraying technology is prone to coating too thin or missing coating in grooves, deep holes and other parts of the workpiece. Electrophoretic coating relies on theMore

Equipment, process and influencing factors of electrophoretic coating Electrophoretic coating equipment is the material basis for the electrophoretic coating process and is primarily composed of an electrophoretic tank, a circulating filtration system, a temperature control system, a rectifier power supply, an ultrafiltration system, and drying equipment. The electrophoretic tank is the core piece of equipment, welded from stainless steel. TheMore

Arc spraying equipment and process Arc spraying equipment is key to achieving arc spraying technology, and its performance directly determines coating quality and production efficiency. A complete set of arc spraying equipment primarily consists of a power supply, spray gun, wire feed system, compressed air system, and control system. The power supply, serving as the core of energy supply, typicallyMore

Arc spraying technology Arc spraying, a key branch of thermal spraying, has been a mature and highly effective surface protection and repair technology since its introduction in the early 20th century. Arc spraying, through continuous improvement, has evolved into a mature and efficient surface protection and repair technique. Initially used primarily for corrosion protection of metal components, its application hasMore

Principles and characteristics of arc spraying Arc spraying is a thermal spraying method that uses an electric arc to melt a metal wire at high temperatures. The molten metal is then atomized into droplets using a high-velocity airflow and sprayed onto the substrate to form a coating. The core principle is to generate an arc between two charged metal wiresMore

Plasma spraying equipment and process Plasma spraying equipment is the core guarantee for realizing plasma spraying technology, and its performance directly affects the quality and stability of the coating. A complete set of plasma spraying equipment mainly consists of a plasma spray gun, a power supply system, a powder feeding device, a working gas supply system, a cooling system, aMore

Plasma spraying technology As an advanced surface modification technology, plasma spraying technology has become an important means of preparing high-performance coatings after continuous development and improvement since its advent in the 1950s. This technology uses high-temperature plasma as a heat source to melt the spray material and spray it at high speed onto the surface of the substrate to formMore

Principles and characteristics of plasma spraying Plasma spraying is a surface enhancement technology that uses the high temperature of a plasma arc to melt the spray material and spray it at high speed onto the substrate surface, forming a coating. Its core principle is to generate high-temperature plasma through a plasma generator, heating the solid spray material (powder, wire, orMore

Anodizing of stainless steel food equipment Stainless steel food equipment, due to its direct contact with food, has extremely high requirements for surface properties. It must possess excellent corrosion resistance to withstand attack by acids, alkalis, salts, and other components in food, while also ensuring a smooth, easy-to-clean surface, non-toxicity, and resistance to bacterial growth. Anodizing, an effective surface modificationMore

Hard anodizing in sulfuric acid solution Hard anodizing with sulfuric acid is currently the most widely used hard anodizing process. Using sulfuric acid as the primary electrolyte, and through precise control of process parameters, it produces a thick, hard oxide film on aluminum and aluminum alloy surfaces. This process offers advantages such as low cost, ease of operation, and excellentMore

Selection of hard anodizing materials The choice of hard anodizing materials directly affects the quality and performance of the oxide film. Not all metals and alloys are suitable for hard anodizing. At present, the most widely used materials are aluminum and aluminum alloys, followed by magnesium alloys and titanium alloys. These metals can generate hard oxide films with excellent performanceMore

Hard anodizing technology Hard anodizing technology is a special anodizing process that generates a thicker and harder oxide film on the metal surface by optimizing electrolysis parameters and electrolyte formula, thereby significantly improving the metal’s wear resistance, corrosion resistance and high temperature resistance. Compared with ordinary anodizing, the oxide film thickness generated by hard anodizing can reach 20-200 microns, andMore