What is the difference between laser etching and engraving?
Laser etching, generally refers to precision laser dashing, the semiconductor industry so called.
Laser engraving, it is very general, basically is the use of focused laser directly engraved the required text, images, there are CO2,fiber optics, semiconductors, green light and so on.
Product marking text, generally laser marking, belongs to the laser engraving
Laser cutting, marking, etching principles are the same, are through the beam after shaping the high-energy exposure to the surface of the material, so that it occurs chemical or physical changes to form a cutting, marking pattern text (marking), etching line map (dashing).
Laser cutting is usually divided into several types, one is high-power laser metal cutting, such as steel plate, stainless steel plate cutting, etc. , one belongs to micro-precision cutting such as ultraviolet laser cutting PCB,FPC,PI film, etc. , and one is CO2 laser cutting leather, cloth and other materials.
Laser marking is usually small power laser, can use different light sources, for glass, metal, silicon, plastic and other materials marking QR code, pattern, text and other information.
Laser etching is usually for photovoltaic, electronics and other industries in the field of conductive material processing, such as ITO glass etching, solar cell laser dashing and other applications, mainly for processing to form a route map.
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The difference between etching technology and stamping is that it does not cause burrs at the edges of components. It also does not produce slag caused by laser cutting.
Another advantage of etching is that it is not affected by the hardness of the component material. Etching has nothing to do with the hardness of the material, and stamping is closely related to it. This limits the effectiveness of stamping technology for the application of pre-hardened materials. In most cases, the material must be heat treated to be stamped, which increases the variability of machining.
Etching changes the shape of the material, but does not change any properties of the material. Laser cutting, on the other hand, produces a fairly wide area of thermal influence at the edge of the component. Stamping also affects the nature of the material. For example, the edge of the cutting edge of a burning device is thinner than that of other knives, and although stamping can be used to process components of different thicknesses, it requires a high tonnation pressure-squeezing metal to form a thinner area. This makes these areas of the metal harder, with a so-called process hardening effect. As a result, components processed in this way produce different characteristics in different thickness areas. In contrast, etching can process components of different thicknesses without affecting the hardness of the material itself.
Etching can significantly shorten the production process of components by reducing the manufacturing cycle of the tool. When the manufacturer decides to modify the design, it is also available to modify the film in a timely and convenient manner.
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Manufacturing stamping tools takes 4 to 12 weeks depending on their complexity and is difficult to modify once a traditional mold is made. Whether it's a prototype or a product part, etching simplifies the process of processing complex parts. For example, there are too many mesh re-engineering, and it is not cost-effective to use other processing methods. If there are 10,000 boreholes, how long can it take to etch 10,000 boreholes simultaneously and process them with laser or stamping technology?
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In addition to complex components, light etching is also suitable for the production of fragile components. Stamping technology can cause deformation or even damage to components. Components made of very thin stainless , if stamped, are likely to , and only light etching technology can be used, taking into account the thickness and precision of the components.
In machining technology, people usually choose laser cutting and stamping technology before considering light etching technology. Laser cutting is faster and more cost-effective than the other two methods for smaller jobs. However, with the increase in the number of processing, laser cutting also gradually lost its competitive advantage. With laser cutting, the larger the number of processing, the greater the number of laser equipment. As the number increases, the efficiency of the equipment decreases. Light etching is different, it can produce the whole plate product at the same time. For example, with a size of 1×1 inch and a metal sheet measuring 12×12 inches, you can get 144 parts from that metal plate in one round without having to cut the outer circumncle of each part with a laser beam. As a result, the cost of components will be much lower than the cost of laser cutting.
Components are too complex, and light etching can be compared to stamping technology in large-scale processing. This is because the cost of light etching components depends on the space that the component takes up on the metal plate, not the complexity of the component. Complexity has a huge relationship with the cost of stamping components. Imagine a component with a large number of boreholes, each perforated by a stamping operation to achieve, the more holes in the design, the more stamping times, the higher the processing cost. In light etching processing, etching can cut out all the holes at once, regardless of whether the component has a hole or 10,000 holes, processing costs remain unchanged.