Light absorption coating for laser quenching, and preparation method thereof

Abstract

The invention discloses a light absorption coating for laser quenching, and a preparation method thereof, and belongs to the technical field of laser quenching. The light absorption coating for laserquenching comprises 80-100 parts of silica, 150-200 parts of industrial alcohol, 10-20 parts of a binder, 15-25 parts of metal oxide, 12-18 parts of a thickener and 3-8 parts of rosin. The preparationmethod of the light absorption coating for laser quenching comprises the following steps: S1, pouring 80-100 parts of silica, 10-20 parts of the binder, 15-25 parts of metal oxide, 12-18 parts of thethickener and 3-8 parts of rosin into a ball mill, and carrying out ball milling; and S2, pouring the ball-milled raw materials obtained in step S1 into 150-200 parts of industrial alcohol, and uniformly stirring the ball-milled raw materials and the industrial alcohol to obtain the light absorption coating. The light absorption coating greatly improves the hardness of workpieces to avoid local burns of the workpieces, and ball milling of the light absorption coating by using the ball mill greatly improves the performances of the light absorption coating and makes the particle size of the light absorption coating uniform and fine. The light absorption coating and the preparation method have the advantages of low cost and no pollution to the environment.

Description

technical field [0001] The invention relates to the technical field of laser quenching, in particular to a light-absorbing coating for laser quenching and a preparation method thereof. Background technique [0002] Laser quenching is the earliest technology applied in laser surface treatment technology, and it is a rapid and partial quenching process. Mainly use the laser beam to scan the surface of the workpiece, quickly heat the surface temperature of the material to above the phase transition temperature and below the melting point, and rely on the heat conduction of the workpiece substrate itself to quickly transfer the heat to the interior of the substrate to achieve the purpose of rapid cooling and quenching. This process is through solid-state self-cooling and quenching, that is, solid-state phase change recrystallization, which changes the surface structure and produces a strengthening effect. After quenching, a hardened layer with a certain thickness can be obtained...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a light-absorbing coating for laser quenching and a preparation method thereof, to solve the problem that the existing light-absorbing coating proposed in the above-mentioned background technology is expensive, inconvenient for industrial production, and will cause environmental pollution and poor thermal stability. question