In the decades of laser technology development, it has been very suitable for applications in the fields of electronics, metal, plastics and other industries. Especially in the precision and delicate electronic product market, various laser marking technologies have been applied very well in this market. development of.
At present, with the development of technology, laser marking machines are gradually divided into two technologies according to market demand: hot processing and cold processing. These two technologies are applied in different markets according to the requirements of different materials and marking effects. Thermal processing basically has ultra-high peak power, excellent beam quality and small size, which can make the equipment compact and strong. It is mainly used in the depth and surface marking of metal, plastic and other products. It belongs to the product and performance of this industry. The best equipment.
Two kinds of laser marking machine thermal processing and cold processing different technical application analysis:
Laser marking machine thermal processing technology: using a high energy density and concentrated laser beam to irradiate the surface of the processed material (metal, plastic, marking, etc.), the surface of the material absorbs laser energy and generates heat in the irradiated area The excitation process causes the temperature of the material surface (or coating) to rise, resulting in phenomena such as metamorphosis, melting, ablation, and evaporation, and finally forms the preset marking effect. Because high temperature is used to achieve the desired effect, it is called thermal processing; for example: Optical fiber and semiconductor and co2 laser marking machine.
Laser marking machine cold processing technology: It is a high-tech equipment that has only appeared in recent years. It uses photons with high load energy (the photons are generally referred to as ultraviolet 355nm light sources), which can modify materials or surrounding media. , To cause the material to undergo non-thermal process damage. This kind of processing is of special significance in laser marking processing. Because it uses low temperature, the bottom of the box has a lower thermal ablation temperature, so it does not produce "thermal damage" side effects to achieve cold peeling, so it affects the inner layer and nearby areas of the processed surface. It does not produce heating or thermal deformation; therefore, this type of processing that does not use high-temperature evaporation is called cold processing. This processing technology is also the most advanced laser marking technology at present; like: green and ultraviolet laser marking machines.
Whether it is laser marking machine hot processing or cold processing technology, the surface layer of the material is processed. It can achieve permanent high-quality and fine marking effects for various substances and metals, and it uses a pressure-free processing method, let alone Damage to the processed products, so the advantages of advanced laser marking technology in the electronics, circuit board and other industries are prioritized to replace traditional marking equipment.