There are two accepted principles:
"Heat processing" has a laser beam with a higher energy density (it is a concentrated energy flow) that irradiates 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, thereby making the surface of the material (or Coating) temperature rises, causing phenomena such as metamorphosis, melting, ablation, and evaporation.
"Cold working" (ultraviolet) photons with very high load energy can break the chemical bonds in the material (especially organic materials) or the surrounding medium to cause the material to undergo non-thermal process damage. This kind of cold processing is of special significance in laser marking processing, because it is not thermal ablation, but cold peeling that does not produce the side effects of "thermal damage" and breaks chemical bonds, so it has no effect on the inner layer and nearby areas of the processed surface. Produce heating or thermal deformation. For example, in the electronics industry, excimer lasers are used to deposit thin films of chemical substances on base materials and to cut narrow grooves on semiconductor substrates.
Comparison of different labeling methods
Compared with the inkjet marking method, the advantages of laser marking and engraving are: a wide range of applications, a variety of materials (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.
Applications
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. Can engrave metal and a variety of non-metal materials. It is more suitable for the processing of some products that require fine and high precision.
2. Used in electronic components, integrated circuits (IC), electrical appliances, mobile communications, hardware products, tool accessories, precision equipment, glasses and watches, jewelry, auto parts, plastic buttons, building materials, PVC pipes, medical equipment and other industries .
3. Applicable materials include: ordinary metals and alloys (iron, copper, aluminum, magnesium, zinc and other metals), rare metals and alloys (gold, silver, titanium), metal oxides (all kinds of metal oxides are acceptable), Special surface treatment (phosphating, aluminum anodization, electroplating surface), ABS material (electric appliance shell, daily necessities), ink (transparent keys, printed products), epoxy resin (electronic component packaging, insulating layer).
