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rolle
tianmeng
0001
Arc spraying is a surface treatment technology that uses an arc to melt the wire, then atomizes it with compressed air and jets it onto the surface of the workpiece to form a coating. The roller may refer to the rotating roller used in the spraying process to handle automotive parts, such as shafts and gears, which need to be wear or corrosion resistant.
Key process parameters
Arc parameters: voltage (18-40 V), current (50-300 A) affect the melting efficiency.
Atomizing pressure: usually 0.4-0.7MPa, which determines particle fineness and coating density.
Spraying distance: 150-200 mm, too close easy to overheat, too far reduce the binding force.
Substrate pretreatment: Sandblasting (Sa2.5 grade) to improve surface roughness and adhesion.
Industry case
Case 1: An automobile company uses arc spraying zinc-aluminum alloy coating to treat suspension parts, and the salt spray test life is increased by 3 times.
Case 2: After the transmission gear is worn, FeCrB wire is sprayed, the repair cost is only 40% of the new part, and the life is restored 90%.
Roller arc spraying is economical and functional in the automotive industry, especially for the protection and repair of high-wear and corrosion-prone parts. With the improvement of material technology and automation level, its application potential in lightweight, new energy vehicles and other fields will be further released. In practical applications, it is necessary to select materials precisely according to the working conditions of the components, and strictly control the process parameters to ensure the reliability of the coating.
Arc spraying is a surface treatment technology that uses an arc to melt the wire, then atomizes it with compressed air and jets it onto the surface of the workpiece to form a coating. The roller may refer to the rotating roller used in the spraying process to handle automotive parts, such as shafts and gears, which need to be wear or corrosion resistant.
Key process parameters
Arc parameters: voltage (18-40 V), current (50-300 A) affect the melting efficiency.
Atomizing pressure: usually 0.4-0.7MPa, which determines particle fineness and coating density.
Spraying distance: 150-200 mm, too close easy to overheat, too far reduce the binding force.
Substrate pretreatment: Sandblasting (Sa2.5 grade) to improve surface roughness and adhesion.
Industry case
Case 1: An automobile company uses arc spraying zinc-aluminum alloy coating to treat suspension parts, and the salt spray test life is increased by 3 times.
Case 2: After the transmission gear is worn, FeCrB wire is sprayed, the repair cost is only 40% of the new part, and the life is restored 90%.
Roller arc spraying is economical and functional in the automotive industry, especially for the protection and repair of high-wear and corrosion-prone parts. With the improvement of material technology and automation level, its application potential in lightweight, new energy vehicles and other fields will be further released. In practical applications, it is necessary to select materials precisely according to the working conditions of the components, and strictly control the process parameters to ensure the reliability of the coating.