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Laser marking opens up a broad prospect for modern processing

发布时间:2020-04-28 点击浏览:

1、 Laser marking is a new marking technology
In recent years, with the improvement of laser's sustainability and practicability, the rapid development of computer technology and the improvement of optical devices, the development of laser marking technology has been promoted.
Laser marking is a new processing technology developed together with laser welding, laser heat treatment, laser cutting, laser drilling and other applications. Through the use of high energy density laser beam on the target, Make the target surface change physically or chemically, so as to obtain the marking mode of visible pattern, that is, the high-energy laser beam focuses on the material surface, makes the material vaporize rapidly, and forms a pit. As the laser beam moves regularly on the material surface and controls the disconnection of the laser, the laser beam is also processed into a designated pattern on the material surface; laser marking is still a kind of marking Non contact, pollution-free and wear-free new marking technology.
The principle of laser marking can be explained in this way, that is, the computer controls the focused laser beam with high energy density to act on the surface of the workpiece that needs to be marked, such as mechanical parts, electronic components, instruments and meters, according to the predetermined trajectory, so that the surface material can achieve instantaneous vaporization or chemical change to change the color, and etch the text and pattern with a certain depth or color, So as to leave a permanent mark on the surface of the workpiece.
2、 Laser marking non-contact permanent mark
Laser marking is a marking method to obtain visible pattern by using high-energy density laser beam to act on the target, making physical or chemical changes on the target surface, and its outstanding feature is the firm and permanent marking produced by laser acting on the workpiece surface.
Laser marking machine is an important application of the principle of laser processing, that is, using the treated laser beam to irradiate the surface of the material, the light energy is instantly converted into heat energy, which makes the surface material melt or even gasify instantly, thus forming a mark.
In recent years, laser marking technology has been applied more and more in the field of printing. Laser marking can be applied to a variety of materials, including plastic and rubber, metal, silicon wafer, etc. laser marking machine is simple and easy to operate. As long as you know basic computer knowledge, you can operate laser marking machine. In the marking and printing industry, laser marking has the following characteristics:
1. Permanent; for example, the mark will not disappear due to environmental relations (touch, acid and alkaline gas, high temperature, low temperature, etc.).
2. Anti counterfeiting; the mark engraved by laser marking technology is not easy to copy and change, and has strong anti-counterfeiting to a certain extent.
3. Non contact; laser marking is processed by non mechanical "light knife", which can print marks on any regular or irregular surface, and the workpiece will not generate internal stress after marking, so as to ensure the original accuracy of the workpiece. It has no corrosion to the working surface, no "tool" wear, no poison and no pollution. It is a clean and pollution-free high environmental protection processing technology.
4. Wide applicability; using laser as processing means, it can process a variety of metal and non-metal materials (aluminum, copper, iron, wood products, etc.).
5. High carving precision; the laser marking machine can carve fine lines with a minimum line width of 0.04mm. The mark is clear, lasting and beautiful. Laser marking can meet the needs of printing a large number of data on very small plastic parts, and has a stronger market competitiveness.
6. Low operation cost; fast marking speed and one-time mark forming, low energy consumption, low operation cost. Although the equipment investment of laser marking machine is larger than that of traditional marking equipment, the operation cost of laser marking machine is much lower. For example: ① marking of plastic triode: the working speed of marking machine is 10 / s, if the depreciation of equipment is calculated by 5 years, the cost of marking is 0.00048 yuan / piece. If the pad printing machine is used, its comprehensive operation cost is about 0.002 yuan / piece, or even higher.
7. High processing efficiency; the laser beam under the control of computer can move at high speed (up to 5-7 M / s), and can print various characters, symbols and patterns. The marking process can be completed in a few seconds. It is easy to use software to design the marking pattern, change the marking content, and adapt to the requirements of high efficiency and fast rhythm of modern production.
8. Fast development speed; due to the combination of laser technology and computer technology, users can realize laser printing output as long as they program on the computer, and can change the printing design at any time, fundamentally replacing the traditional mold manufacturing process, providing a convenient tool for shortening the product upgrading cycle and flexible production.
If equipped with laser Q-switched or mopa10w, 20W pulse fiber laser laser marking machine, the whole system has high marking accuracy, fast speed and stable performance. It can be equipped with a long-time continuous working Transport working platform (also can be installed directly on the customer's production line) and equipped with encoder and sensor, so that the continuous dynamic marking on the production line is more rapid and accurate, compared with the traditional laser marking machine It has the advantages of higher photoelectric conversion efficiency, higher stability and easier operation. Compared with the traditional ink jet printer, it has the advantages of clean, environmental friendly, pollution-free and low consumption, and the marking is more durable with anti-counterfeiting function. With the continuous expansion of modern laser marking application field, the requirements of laser manufacturing equipment system miniaturization, high efficiency and integration are also higher.
3、 Application of laser marking
Laser marking technology is one of the biggest application fields of laser processing. Because of the obvious advantages of laser marking, laser marking can print all kinds of words, symbols and patterns, and the size of characters can be from millimeter to micrometer, which has special significance for the anti-counterfeiting of products, and has been widely used in all walks of life, such as electronic, instrument, communication equipment, packaging, beverage, battery, health

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