Working principle of high frequency pulsing solid state laser marking machine
Aug 19 , 2021The general working effect of laser marking machine is that it can mark long-term marks on the surface of different materials. The principle can be considered as the cooling of the surface material to cover the deep material (ultraviolet laser marking machine), or through light It can cause chemical and physical reactions on the surface material to change into "carving" (light/CO2), but people who have not been in contact will think that light energy causes light contact processing on the surface of the material. The surface is burned to show the marking pattern. Word.
The ultraviolet laser marking machine we are talking about here, through its laser head, it can be known that the ultraviolet laser is a high-load cold processing, which can break the chemical bond in the material or the surrounding medium to cause the material to be destroyed by a non-thermal process again. This kind of cold processing has a similar meaning in laser marking processing, because it is not a thermal laser, but a cold extrusion that stops the chemical bond without the side effect of "heat damage", so it affects the inner layer and nearby areas of the processed surface. Without cooling or thermal deformation, we can call this process the "photoetching" effect.
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In the field of modern precision processing, because traditional laser marking machines use laser thermal processing technology, there is a limited development in fineness. Under this background, ultraviolet laser marking machines have become the darling of the new era. With the rapid development of laser equipment and the increase in the power of UV laser marking machines, UV laser marking machines have been used in the high-end market for ultra-fine processing, marking the surface of packaging bottles for iPhone, cosmetics, medicines, food and other polymer materials. ; Flexible PCB board marking and scribing; silicon wafer micro-hole and blind hole processing; LCD liquid crystal glass, glassware surface, metal surface coating, plastic buttons, electronic components, gifts, communication equipment, building materials and other fields . Many of the common signs in our daily lives, such as metal or non-metallic marks, text and patterns, BMW logos, mobile phone buttons, etc., are all marked by UV laser marking machines. The principle is that the laser light energy of the ultraviolet laser marking machine evaporates the surface layer of the target substance to expose the deep layer of the substance, thereby "carving" the required pattern text. In simple terms, it uses laser beams to print long-lasting marks on the surface of various substances. .
In understanding the working effect and working principle of the UV laser marking machine, it is not difficult to see that cold processing does have a significant improvement in processing compared to hot processing, but it is not absolute. It provides multiple choices for enterprises, and it is uncertain in the future. There are other laser head research and development, and at this stage, it can be considered that the ultraviolet laser marking machine is the right assistant of the enterprise.
