Views: 4 Author: DURMAPRESS Publish Time: 2021-12-09 Origin: DURMAPRESS
Traditional cleaning industry has a variety of cleaning methods, is the use of chemical agents and mechanical cleaning methods. In China's environmental protection laws and regulations are more and more strict, people's environmental protection and safety awareness is increasingly enhanced today, industrial production can be used in cleaning chemicals will become less and less. How to find cleaner, and not invasive
The cleaning method is the problem we have to consider, and laser cleaning has no grinding, non-contact, no thermal effect and active use of dry objects and other cleaning characteristics, is considered to be the most back
Rely on, the most effective solution.
Laser cleaning equipment is a new generation of surface cleaning high-tech products. Easy to install, operate and automate. Simple operation, switch on the power supply, open the equipment, you can carry out no chemical test
Agent, no medium, no water cleaning has the advantage of manual adjustment of selling point, surface cleaning needs to clean the surface cleanliness, can remove the surface of the resin, oil, stains, dirt
Corrosion, coating, plating, paint, etc.
1) Non-contact cleaning, no damage to the parts matrix.
2) Precise cleaning, can achieve precise position, precise size selective cleaning
3) Do not need any chemical cleaning liquid, no consumables, safe and environmental protection
4) Simple operation, power can be, hand-held or with manipulator to achieve automatic cleaning.
5) Cleaning efficiency is very high, save time.
6) Laser cleaning system is stable, almost no maintenance.
Laser cleaning application
Laser cleaning is widely used in various industries, such as: shipping industry, auto parts, rubber molds, high-end machine tools, tire molds, rail, environmental protection industry and other industries
Laser cleaning (derusting) machine
Ggjg-q series hand-held laser cleaning (derusting) machine
Corrosion occurs when metals are oxidized by substances such as oxygen and water vapor in the air. Once rust occurs, it affects the metal
The workpiece produces great damage, the degree of corrosion will change from light to heavy as time goes by, and the range of corrosion will also be from the workpiece surface to the workpiece
Part spread until the whole workpiece is thoroughly rusted. So derusting is an important thing. Laser rust removal without chemical agents and mechanical grinding. Laser derusting is fast and safe, can derusting all kinds of metal materials. High work efficiency, high degree of automation, simple process, no follow-up work, greatly improve the work efficiency, reduce the labor intensity of workers, saving production costs.
The working principle of
Pulsed Nd:YAG laser cleaning process depends on the laser generated light pulse characteristics, based on the high intensity of the beam, short
The photophysical reaction caused by the interaction between pulsed laser and contaminated layer. Its physical principles can be summarized as follows:
The laser beam is absorbed by the contaminated layer on the surface to be treated.
The absorption of large amounts of energy forms a rapidly expanding plasma (a highly ionized unstable gas), producing shock waves. The shock wave fragments and removes contaminants.
The light pulse width must be short enough to avoid heat accumulation that damages the treated surface
Experiments show that plasma is generated on metal surface when there is oxide on metal surface.
Plasma is produced only when the energy density is above the value, which depends on the contaminant or oxide layer being removed. This into
The value effect is very important for effective cleaning while keeping the base material safe. There is a second threshold for plasma. If the energy density exceeds this threshold, the substrate material will be destroyed. In order to carry out effective cleaning under the premise of ensuring the safety of the base material, the laser parameters must be adjusted according to the situation, so that the energy density of the optical pulse is strictly between the two thresholds.
Each laser pulse removes a certain thickness of contamination layer. If the contamination layer is thick, multiple pulses are required to clean it. Clean the surface
The number of pulses required for cleanliness depends on the level of surface contamination. An important result of the two thresholds is the self-control of the cleaning. energy
Light pulses with attitudes above the first threshold will remove contaminants until they reach the base material. However, because its energy density is lower than
The damage threshold of the base material, so that the base will not be damaged.
Laser cleaning can not only be used to clean organic pollutants, but also can be used to clean inorganic materials, including metal corrosion, metal particles and dust. It is now widely used.