What is laser hot processing and what is laser cold processing?

The principle of laser marking machine is to use laser beam to mark on the surface of various materials for a long time. It is very suitable for industries such as electronics, metals, plastics, etc., especially the market of precision and delicate electronic products. With the development of technology, laser marking machines are gradually divided into two technologies: hot processing and cold processing according to market demand. These two technologies are applied to different markets according to the requirements of different materials and marking effects. The following are the characteristics of hot and cold processing of laser marking machines.

Hot processing technology: Use high energy density, concentrated laser beam to irradiate the surface of the processing material (metal, plastic, marking, etc.). The surface of the material absorbs the laser energy, and a thermal stimulation process occurs in the irradiated area, which increases the temperature of the surface (or coating) of the material, causing abnormalities, melting, corrosion, evaporation, etc., and finally forms a preset marking effect, such as: optical fiber, semiconductor, carbon dioxide laser marking machine.

Cold processing technology: High-load energy photons (ultraviolet rays) can modify the material or the surrounding medium until the material is damaged in a non-thermal process. Due to the low temperature, the thermal corrosion temperature of the bottom of the box is low, there is no side effect of thermal damage, and there is no heating or thermal deformation of the inner layer and nearby areas of the processed surface. For example: green light and ultraviolet laser marking machines.

The laser marking machine uses hot processing or cold processing technology, which is the surface processing of materials. For various materials and metals, it can achieve long-term high-quality and fine marking effects. It adopts a pressure-free processing method and will not damage the processed products. Therefore, advanced laser marking technology gradually replaces traditional marking equipment, giving priority to industries such as electronics and circuit boards.