Which kind of rail shoulder surface treatment way

Grinding method:
Grinding technology is one of the widely used surface treatment methods at present, which can remove the defects and unevenness of the rail shoulder surface and improve the smoothness and finish of the surface.
Grinding can also create gloss for the shoulder surface of the rail, suitable for use on precision mechanical equipment and high precision machinery.
However, grinding techniques can damage the hardened layer of the rail shoulder surface, making the surface soft, and may leave excessive and aggravated surface wear marks.
Spraying method:
The spraying method is to spray the paint on the surface of the rail shoulder to improve its surface performance.
Through different coating formulations, it can meet the needs of different rail shoulders and achieve special surface effects.
The spraying method can improve the hardness, wear resistance and friction coefficient of the rail shoulder surface, which is suitable for the surface treatment of the rail shoulder of machine tools, light conveying equipment and various industrial equipment.
Thermal spraying is a kind of spraying method, which uses an arc or plasma arc as a heat source to heat the metal that needs to be deposited to a molten or semi-molten state, and then jets it to the pre-treated rail shoulder surface at a certain speed with the help of the flame flow itself or compressed air to form a surface coating with certain functions.
Gas polishing method:
The gas polishing method is to pass the micron metal particles through the rail shoulder in the high-speed air flow, so that the surface of the rail shoulder can obtain high gloss, high hardness and good flatness.
This method is suitable for the surface treatment of rail shoulder manufactured by high precision machinery.
Electrochemical polishing method:
Electrochemical polishing method uses the movement of charged particles in the electrolyte to eliminate the small bumps and defects on the surface of the rail shoulder.
This method can produce a smoother and more polished surface than grinding, and can be used for high precision equipment such as high-speed machinery.
Special chemical treatment:
Certain special chemical treatments, such as THK-AP treatment, including AP-HC (high hardness, high corrosion resistance treatment), AP-CF (industrial black chromium treatment) and composite surface treatment (combining black chromium treatment with special fluorine resin plating), are also suitable for the surface treatment of the rail shoulder.
These treatments provide excellent wear, corrosion and rust resistance.
Laser cladding technology:
Laser cladding technology is a method of using high energy density laser beam to melt the cladding material and the thin layer material on the surface of the rail shoulder substrate at the same time, and form the surface coating of metallurgical bonding with the substrate after rapid solidification.
This method can significantly improve the hardness and wear resistance of the shoulder surface.
Surfacing:
Surfacing welding is a method of using arc or plasma arc as heat source, alloy powder or welding wire as cladding material, so that the substrate and the coating produce metallurgical bonding, and realize the surface repair of the substrate material and the preparation of the coating.
However, the technology of surfacing welding is relatively complex, and the selection surface of surfacing welding materials is narrow, the heat affected zone is large, and the performance is unstable, which needs to be fully paid attention to in use.