Surface metal-­ceramic composite layers formation provides significant wear resistance increasing. For this aim, laser-­powder processing can be used. With the powder feeding coaxial to the laser beam, it is possible to make a deep hardened layer, but the laser radiation intensity decreasing when the beam paces through the powder flow and the heating of the particles flying in the irradiated region are to be taken into consideration. The calculations showed that when realizable process parameters are used, laser beam intensity decreasing reaches the level of 10% on the component surface. The condition of a particle that is injected into the melted steel depends on its size. The relatively small particles can be partly melted, and it causes the intensification of the tungsten diffusion into the steel.

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Разработка: студия Green Art