Application of RFH UV Solid State Laser in Laser Marking

Metal nameplates, also known as signboards, are often produced through multiple processes such as grinding, stamping, die-casting, printing, and electroplating. They are mainly used in auto parts, handicrafts, mechanical and electrical equipment, chassis and many other fields to provide end users with products. Trademarks, production information, parameters and other industrial equipment data.

In order to ensure clear and accurate transmission of information, the requirements for metal nameplate marking are very high. Metal signs are usually made of stainless steel, copper, iron, aluminum (aluminum alloy, anodized aluminum), zinc alloy, titanium and other materials. The traditional marking methods mainly use inkjet marking/screen printing, or engraving, etc. The text pattern is easy to fall off and fade, the marking life is short, or the surface is rough, the lines are rough, which affects the appearance, and it is always unsatisfactory.

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In order to solve the above problems, the marking of metal nameplates has been widely used for laser marking. The high-energy beam of the laser is used to irradiate the surface of the material to be processed, so that the surface material is instantly melted, vaporized, and burned to remove the surface material of the object, thereby "engraving". The picture and text information of the permanent mark is displayed, and the color does not fade, and the effect is exquisite.

RFH 355nm ultraviolet nanosecond laser, its output wavelength is 355nm ultraviolet laser, with a narrow pulse width (<20ns), it is "friendly" to most metal materials, the thermal effect is very small, and the beam quality is good (M2 < 1.2). The diameter of the light spot is small, in the order of microns. Even if the two-dimensional code, trademark logo, etc. are marked on the nameplate, it can be completed clearly and quickly. It has the characteristics of high speed, high precision, clear and beautiful characters, and beautiful and generous.

The general advantages of using laser marking are no consumables, low cost, high degree of automation, safety and environmental protection, no need to worry about process pollution such as silk screen printing or electrical corrosion, and at the same time, non-contact processing can effectively avoid external forces. And through platform integration, there is no need to manually load and unload materials, saving labor costs and work intensity, and greatly improving production efficiency.

Of course, marking only metal nameplates is a pity for this laser. Due to the high absorption rate of many materials for 355nm UV laser and the high single-photon energy of UV laser, this laser can also be used for most The marking of plastic, film, glass, ceramics, jade and other materials has a good marking effect.