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Laser Cleaning Technology

Laser welding is a relatively common field of laser technology applications, the development of China"s manufacturing industry makes China"s demand for welding will continue to grow and may become the next point of attack. For laser welding, welding quality is critical. Welding quality in addition to the laser welding process, the choice of laser, welding materials, etc., but also with the surface of the welding material has a direct relationship between the state. Laser cleaning technology, in simple terms, is the use of a certain wavelength of the laser generated by the high frequency of vibration, the surface of the object attached to the shatter; the use of green laser pointer generated by the instantaneous high temperature so that the object off the substrate surface, so as to achieve the purpose of cleaning. The Laser cleaning objects include any material surface contamination layer, paint layer, rust layer, adhesion layer and so on. Its application mainly includes: mold cleaning, metal surface paint layer and the removal of welding points, oxide, oil and oil scavenging, the restoration and preservation of historical relics and so on.

blue laser pointer

Simple structure, strong adaptability, easy to manufacture, easy to ensure high accuracy, can be made into small size sensor to achieve special measurement, can work in high and low temperature, strong radiation and strong magnetic fields and other harsh environments, can withstand high pressure, Impact, overload and so on. Dynamic response is good, because the electrostatic attraction between the plate is very small, the role of the required energy is very small, and its movable part can be very small and very thin, so its inherent frequency is very high dynamic response time is short, Frequency work, especially for dynamic measurement. Heat is small, its own temperature coefficient is small, because the capacitive capacitance of the capacitor value is independent of the electrode material, you can choose a low temperature coefficient of material, in the case of external temperature stability, can guarantee good stability. This shows that these advantages are very suitable for high power laser processing, for laser cutting head, it can be said that the use of capacitive displacement sensor is most appropriate.

Environmental requirements and lightweight trends make plastic more and more alternative to industrial parts of the metal parts, and plastic laser welding relative to other welding technology, with more advantages: non-contact welding, and the workpiece to be welded without physical contact, thermoplastic Does not occur chemical reaction, can be operated in industrial environment, suitable for health and safety of medical and food industry. The medical industry is mainly used for injection systems, medical electronic equipment, all kinds of artificial transplant and stoma products. The shape and size of the laser beam can be controlled to control the size of the heat affected zone and the joint area, high degree of freedom and flexibility. Does not limit the size and shape of the parts to be welded, can achieve two-dimensional or even three-dimensional welding, for the diversification of customized parts to provide a basis for production.

With the emergence of laser welding machine, the advantages of laser pen welding for thinner materials have become increasingly prominent, both in the welding heat control and spot control can be done with the demand. Fiber laser welding machine is the use of energy fiber, the laser generated by solid-state laser, through the laser coupling technology to the fiber, and then the fiber in the laser through the output mirror to the workpiece surface, to achieve the purpose of welding. The use of optical fiber transmission laser, you can use the flexibility of the fiber, so that the laser can be arbitrary angle of the workpiece processing, to achieve a multi-dimensional flexible processing. Fiber on the laser energy and homogenization, the laser spot energy can be modeled output, and the laser for homogenization, so that the laser beam quality is better to improve the quality of welding. Use energy feedback power output energy laser can do the same spot.

The use of laser cleaning can avoid the above problems, has the following advantages: cleaning light source can adapt to the arc surface morphology, to minimize the destruction of the substrate, corrosion removal rate of more than 99%, substrate damage <0.01 mm; Cleaning can achieve the selective cleaning of pollutants, improve cleanliness, protect the substrate; no supplies green cleaning technology to eliminate dust pollution, significantly reduce the cleaning costs; cleaning light source can be used flexible fiber transmission, and robot integration work; greatly improve the cleaning quality, Improve the welding yield, rail welding strength and reliability, to eliminate security risks.

Laser welding market is broad, with the corresponding pre-welding pre-treatment needs will increase, red laser pointer cleaning technology to achieve no damage to the substrate and no secondary pollution pre-treatment, is to ensure the quality of welding is a good helper.