In the maintenance and repair of motors, it is common to encounter situations where certain components do not meet their required dimensions, such as a reduction in the bearing seat size on the motor shaft or an increase in the bearing journal size. Particularly for maintenance and repair units without the ability to process or replace components, localized repair techniques become essential.

Common repair methods such as brushing, welding, and cold welding are frequently used in motor component repairs. Today, we will discuss another repair technology—επένδυση με λέιζερ.

Επένδυση με λέιζερ is a metal material repair technology that adds external materials to the substrate by either synchronously or pre-placing the material. The added materials are irradiated by a laser, causing them to rapidly solidify in conjunction with the substrate material, forming a cladding layer on the substrate surface.

This method allows for metallurgical bonding between the added material and the substrate. The two materials bond securely and exhibit excellent corrosion resistance, oxidation resistance, heat resistance, and wear resistance. These features make επένδυση με λέιζερ highly suitable for component repairs and surface modifications, especially for the repair of thin-layer structures, such as the mating surfaces of motor bearing systems. Currently, επένδυση με λέιζερ is widely used in motor repair units with excellent results.

There are both standard and high-speed επένδυση με λέιζερ systems available on the market. When compared to standard-speed systems, high-speed επένδυση με λέιζερ processes the material at much faster rates, causing the powder to mostly melt in the space under the laser. The laser melts the substrate material in such a way that the resulting molten pool is shallower and smaller, with an ultra-fast cooling rate. As the cladding rate increases, the overlap between cladding passes increases, allowing for the creation of a multi-layered cladding structure. This results in a more uniform coating with less residual stress on the substrate, effectively preventing deformation of the base material.

In real-world production processes, when components do not meet dimensional requirements, many motor manufacturers opt for welding and re-machining methods. However, welding can cause severe deformation of the base material, while machining becomes significantly more difficult. The introduction of automated and intelligent equipment has effectively prevented such issues, making επένδυση με λέιζερ an even more practical repair method. While επένδυση με λέιζερ is primarily a repair technology, its application in maintenance is becoming increasingly common.