Laser marking is the use of a laser beam to mark permanent surfaces on a variety of different materials. The effect of marking is to expose deep substances by evaporation of surface substances, or to "engraving" traces by chemical or physical changes of surface substances caused by light energy, or to burn off some substances by light energy to show the desired etching. Pattern, text. Suzhou Chuangxuan Laser for your light marking machine working principle and process knowledge
Laser marking is the use of a laser beam to mark permanent surfaces on a variety of different materials. The effect of marking is to expose deep substances by evaporation of surface substances, or to "engraving" traces by chemical or physical changes of surface substances caused by light energy, or to burn off some substances by light energy to show the desired etching. Pattern, text.
At present, the principle of
Laser Marking Machine has the following two types:
Fiber Laser Marking Machine: "thermal processing" a laser beam with a higher energy density (which is a concentrated energy flow), which is irradiated on the surface of the material to be processed, and the surface of the material absorbs laser energy to generate a thermal excitation process in the irradiation region. Thereby, the temperature of the surface (or coating) of the material rises, causing melting, ablation, evaporation and the like.
Violet laser marking machine: "Cold processing" (ultraviolet) photons with high load energy, which can break the chemical bonds in the material or surrounding medium to cause the material to undergo non-thermal process damage. This cold working has special significance in laser marking processing because it is not thermal ablation, but does not produce "thermal damage" side effects, and the cold peeling of the chemical bond is broken, so that the inner layer and the vicinity of the surface to be processed are not Produces heat or thermal deformation. For example, in the electronics industry, excimer lasers are used to deposit a thin film of a chemical on a substrate material to create a narrow trench in the semiconductor substrate.
According to the different laser energy used, the mechanism of laser marking can be divided into the following types:
1. Heating changes color marking Most materials (especially some non-metallic materials, such as plastic, paper, rubber, etc.) are chemically changed by the laser itself, which causes the color of the surface of the marked workpiece to change or make the surface shiny. Brighten. Therefore, this mechanism can be used for marking.
2. Melting Marking After the metal is heated to the melting point, the color of the surface changes after the metal resolidifies due to oxidation of the metal or the incorporation of other impurities. Laser marking can also be performed using this method.
3. Vaporization Marking Most materials evaporate and vaporize when their surface temperature is above the melting point. For example, metal materials such as steel, aluminum, titanium, copper, etc., when the Nd; YAG laser beam moves on its surface, the surface is easily vaporized to form a groove, thereby producing a marked mark.
-------------Company Profile-----------------
Suzhou Chuangxuan Laser Technology Co., Ltd. is the largest laser equipment manufacturer in Suzhou, specializing in R&D, production and sales of laser cutting machines, laser marking machines, laser engraving machines, laser cutting machines and other laser equipment. Our
Laser Cutting Machine, laser marking machine is not only of good quality, can be guaranteed in time after sale, and is a helper for your process improvement. Welcome new and old customers to cooperate!
Contact information;
Address: No. 65, Xingwu Road, Wuzhong Economic Development Zone, Suzhou;
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