Under the global theme of energy conservation, environmental protection and new energy utilization, how can industrial manufacturing walk out of the green road of environmental protection and energy conservation? let’s take a look at the contribution of laser technology in environmental protection and industrial green development.
01 laser is a faithful partner to achieve carbon peaking and carbon neutralization
Laser is one of the great inventions in the 20th century. It has four characteristics: high brightness, good monochromatic, coherence and directivity. Since laser processing is non-contact processing, there is no direct impact on the workpiece, so there is no mechanical deformation and no impact noise; There is no “tool” wear and no “cutting force” acting on the workpiece during laser processing; In the process of laser processing, the energy density of laser beam is high, the processing speed is fast, and it is local processing, which has no or minimal impact on non laser irradiated parts. Therefore, the heat affected zone is small, the thermal deformation of the workpiece is small, and the subsequent processing is minimal. Because the laser beam is easy to guide, focus and realize direction change, it is very easy to cooperate with the CNC system to process complex workpieces.
Therefore, laser processing is a very flexible and convenient processing method, with high production efficiency, stable and reliable processing quality, and good economic and social benefits. Without chemical pollution and environmental pollution, it is a faithful partner to achieve carbon peak and carbon neutralization.
02 laser cleaning is a fairly environmentally friendly cleaning technology
With the progress of science and technology, people gradually explore a variety of technologies conducive to environmental protection, laser cleaning technology is one of them.
Laser cleaning is to use the high-energy laser beam to interact with the material to be removed on the surface of the workpiece, so that the attachments can evaporate or peel off instantaneously to achieve the purpose of cleaning the workpiece. This processing technology does not need various chemical cleaning agents, and is green and pollution-free. It is widely used in surface paint removal and depainting, surface oil stain, dirt cleaning, surface coating and coating removal, welding surface / spraying surface pretreatment, dust and attachments removal on stone surface, rubber mold residue cleaning, etc.
The traditional cleaning methods, including mechanical cleaning, chemical cleaning and ultrasonic cleaning, will produce pollutants to varying degrees. Under the requirements of environmental protection and high accuracy, their application is greatly limited. The laser cleaning process will not produce any harmful substances, which can be called quite environmental friendly cleaning.
Compared with traditional cleaning methods, laser cleaning is a “green” cleaning method, which has incomparable advantages: it does not need to use any chemical agent and cleaning liquid, and the waste material after cleaning is basically solid powder, with small volume, easy storage, adsorption and recovery, no photochemical reaction, no noise and environmental pollution. At the same time, it is easy to realize automatic control and remote control cleaning without damaging the health of the operators.
03 environmental protection contribution of “fiber laser technology”
As one of the most promising new technologies in the 21st century, laser technology is also playing an important role in purifying the environment on which we live. The emergence and application of laser is called the third leap of human tools. In order to meet the needs of the transformation and upgrading of the manufacturing industry, laser technology will lead the manufacturing industry to develop in the direction of high efficiency, energy saving, environmental protection and intelligence.
The electro-optical conversion efficiency of fiber laser is high. Compared with other lasers, the electro-optical conversion rate of fiber laser is 30%, that of YAG solid-state laser is only 3%, and that of CO2 laser is 10%; The gain medium in the traditional laser must be cooled by water. Fiber laser uses fiber as gain medium and has a large surface area / volume ratio, which makes it have very good heat dissipation performance. At the same time, the closed all fiber structure ensures the stability of the laser cavity. Because of these unique characteristics of fiber lasers, the cooling requirements of fiber lasers are greatly reduced. Low power fiber lasers only need to use air cooling, replacing the water cooling requirements of traditional lasers, so as to save electricity and water and make contributions to energy conservation and emission reduction.
04 laser integrates energy saving, environmental protection, emission reduction and low carbon
In recent years, as an advanced processing method, laser processing has gradually replaced many traditional processing methods. In the fields of marking, welding, cutting, cleaning, cladding and additive manufacturing, laser processing has gradually shown unparalleled advantages.
For example, with the development of the times, various laser cleaning technologies that are conducive to environmental protection emerge as the times require; For example, lidar can accurately analyze the geographical location, pollution area and occurrence frequency of pollution sources, speculate on pollution sources and pollution causes, and effectively improve the efficiency of air pollution control; Laser cleaning with higher efficiency and lower cost than traditional methods; There are laser lighting that is brighter than LED lamps, smaller in size, more energy-saving, longer in irradiation distance and more power-saving; The alternative electroplating technology has become a consensus in the industry. The laser cladding technology recognized by the market for its low cost, zero pollution, long life and low energy consumption is a low-carbon technology with energy saving, environmental protection and emission reduction.
Realizing carbon peaking and carbon neutralization is an inherent requirement for promoting high-quality development. We should correctly understand and unswervingly promote it. To this end, we should unswervingly follow the high-quality development path of ecological priority, green and low-carbon, seize the key period and window period of the “14th five year plan” to reach the peak of carbon, resolutely shoulder the political responsibility of environmental protection, take the initiative and make positive contributions to accelerate the construction of a beautiful Greater China with blue sky, beautiful land and beautiful water.
Post time: Aug-25-2022