Introduction to the definition and simple features of 532nm green laser marking machine

1. Definition of laser marking machine (laser marking machine) is also called "laser marking machine, laser engraving machine, laser machine, laser engraving machine, laser machine, laser marking machine, laser engraving machine, laser marking machine, laser marking machine Engraving machine, laser laser engraving machine, laser laser machine, laser marking machine" use laser beams to make permanent marks on the surface of various materials. The effect of marking is to use a high-energy density laser to locally irradiate the workpiece. The physical evaporation of the surface material exposes the deep material, or the chemical and physical changes of the surface material caused by light energy to "carve" traces, or light energy Burn off part of the material to reveal the pattern and text to be etched.

laser marking machine

The word LASER comes from the acronym of Light Amplification by Stimulated Emission of Radiation. L=Light (light): CO2: 10600nm/9300nm FIBRE: 1064nm A=AMPLIFIED (amplified) S=STIMULATED (excited) E=EMISSION (emission) R=RADIATION (radiation, emission) 2. Laser marking processing Principle 1. Basic principle: The laser emitted by the laser undergoes a series of processing, and the energy is concentrated in a small range after focusing by the lens, so that the surface material is melted instantaneously, or even vaporized, and the laser is controlled on the surface of the material The path to form the required graphic mark.

According to different material properties (such as melting point, boiling point, temperature at which chemical changes occur), the workpiece will undergo a series of physical or chemical changes, such as melting, vaporization, oxide formation, discoloration, and so on. This is the principle of laser processing.

Recognized principle: cold working

Recognized principle: cold processing: photons with very high load energy can modify the material or the surrounding medium to cause non-thermal process damage to the material. Because the low temperature is used, the thermal ablation temperature of the bottom of the box is lower, so there is no "thermal damage" side effect to achieve cold peeling, so there is no heating or thermal deformation on the inner layer and nearby areas of the processed surface, nor will it affect The workpiece causes problems such as burning, black edges, and deformation. Green laser marking machine and UV laser marking machine belong to cold processing.

Thermal processing: the surface of the workpiece is irradiated with a high-energy laser beam, and the surface of the material absorbs the laser energy

Thermal processing: The surface of the workpiece is irradiated with a high-energy laser beam. The surface of the material absorbs laser energy and generates a thermal excitation process in the irradiated area, thereby increasing the temperature of the surface (or coating) of the material, causing metamorphosis, melting, ablation, evaporation, etc. . In order to achieve our final target effect, it is called thermal processing because high temperature is used to achieve the desired effect. Fiber laser marking machine, co2 laser marking machine, semiconductor laser marking machine belong to thermal processing.

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The size after the laser is focused is small, the heat-affected area is small, and the processing is fine

The focused laser of the laser processing mode is like a very thin invisible tool, which vaporizes the surface of the local area of ​​the object point by point. It is characterized by non-contact processing, does not touch the workpiece, and can be marked on any special-shaped surface It does not produce mechanical extrusion or mechanical stress, so it will not change the physical properties of the processed article; due to the small size of the laser focused, the small heat-affected area, and the fine processing, it can complete some processes that cannot be achieved by conventional methods.