1. There are two generally accepted principles:
"Thermal processing" has a laser beam with high energy density (it is a concentrated energy flow), irradiated on the surface of the material to be processed, the surface of the material absorbs the laser energy, and generates a thermal excitation process in the irradiated area, so that the surface of the material (or Coating) temperature rises, resulting in metamorphosis, melting, ablation, evaporation and other phenomena.
"Cold processing" (ultraviolet) photons with very high load energy can break the chemical bonds in the material (especially organic material) or the surrounding medium, so that the material can be destroyed by non-thermal process. This kind of cold processing has special significance in laser marking processing, because it is not thermal ablation, but a cold peeling that does not produce "thermal damage" side effects and breaks chemical bonds, so it is not harmful to the inner layer and nearby areas of the processed surface. Produce heating or thermal deformation and other effects. For example, excimer lasers are used in the electronics industry to deposit thin films of chemicals on substrate materials and to create narrow grooves in semiconductor substrates.
2. Comparison of different labeling methods
Compared with the inkjet marking method, the advantage of laser marking engraving lies in: a wide range of applications, a variety of substances (metal, glass, ceramics, plastics, leather, etc.) can be marked with permanent high-quality marks. There is no force on the surface of the workpiece, no mechanical deformation, and no corrosion on the surface of the material.
3. Product application
Can engrave a variety of non-metallic materials. Used in clothing accessories, pharmaceutical packaging, wine packaging, architectural ceramics, beverage packaging, fabric cutting, rubber products, shell nameplates, craft gifts, electronic components, leather and other industries.
(1) It can engrave metal and various non-metal materials. It is more suitable for the processing of some products that require fine and high precision.
(2) Applied to electronic components, integrated circuits (IC), electrical appliances, mobile communications, hardware products, tool accessories, precision instruments, glasses clocks, jewelry, auto parts, plastic buttons, building materials, PVC pipes, medical equipment, etc. industry.
(3) Applicable materials include: common metals and alloys (all metals such as iron, copper, aluminum, magnesium, zinc, etc.), rare metals and alloys (gold, silver, titanium), metal oxides (all kinds of metal oxides are acceptable) , Special surface treatment (phosphating, aluminum anodizing, electroplating surface), ABS material (electric appliance shell, daily necessities), ink (light-transmitting keys, printed products), epoxy resin (electronic component packaging, insulating layer).