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Do You Know What The Laser Marking Principle Is?
Sep 23, 2018

Nowadays, with the development of science and technology, laser technology is also constantly developing. At the same time, laser marking machines have slowly penetrated into various industries to mark products. 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.

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Do you know what the laser marking principle is?

Currently, the accepted principles are two, "hot processing" and "cold processing."

"Heat processing" has a higher laser beam (which is a concentrated energy flow) that illuminates the surface of the material being processed, and the surface of the material absorbs laser energy, creating a thermal excitation process in the illuminated area, thereby causing the surface of the material (or coating) The temperature rises, causing metamorphosis, melting, ablation, evaporation, and the like.

"Cold processing" (ultraviolet) photons with very high load energy can break chemical bonds in materials (especially organic materials) or surrounding media to cause 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, a thin film of a chemical substance is deposited on a substrate material to form a narrow groove in the semiconductor substrate.

The laser marking machine can engrave metal and a variety of non-metallic materials. It is more suitable for applications that require more precision and higher precision. Used in electronic components, integrated circuits (IC), electrical appliances, mobile communications, hardware products, tool accessories, precision equipment, glasses and clocks, jewelry, auto parts, plastic buttons, building materials, PVC pipe.

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