Laser Cleaning Application in Various Fields
Laser cleaning technology is a new type of cleaning technology that has been rapidly developed in the past 10 years. It has gradually replaced traditional cleaning processes in many fields with its own advantages and irreplaceability. Laser cleaning can be used not only to clean organic contaminants, but also to clean inorganic materials, including metal corrosion, metal particles, and dust. The following describes some practical applications. These technologies have been very mature and have been widely used.
Mold Cleaning
Every year, tire manufacturers in the world manufacture hundreds of millions of tires, and the tire molds in the production process must be quickly and reliably cleaned to save downtime. Conventional cleaning methods include sandblasting, ultrasonic or carbon dioxide cleaning, but these methods usually must be cooled in a hot mold for several hours, then moved to the cleaning equipment for cleaning, cleaning takes a long time, and easy to damage the accuracy of the mold Chemical solvents and noise can also cause problems such as safety and environmental protection.
The use of laser cleaning methods, because the laser can be transmitted using optical fiber, so it is very flexible in use; because the laser cleaning method can be used to connect the optical fiber to the blind corner of the die or difficult to clean the parts to be cleaned, so easy to use; due to rubber and Without gasification, no toxic gas will be produced, which will affect the safety of the working environment.
The technology of laser cleaning tire molds has been widely adopted in the tire industry in Europe and America. Although the initial investment cost is high, the benefits obtained in saving standby time, avoiding mold damage, working safety, and saving raw materials can be quickly recovered.
According to the LASERLASTE laser cleaning system of the British company Quantel, the cleaning tests conducted on the Shuangqin Trucking Tire Company's production line show that it is only necessary to clean the mold of a large-scale truck tire online in 2 hours. Compared with conventional cleaning methods, the economic benefits are obvious.
Weaponry Cleaning
Laser cleaning technology is widely used in weapon maintenance. The use of laser cleaning system can remove rust and pollutants efficiently and quickly, and can select cleaning sites to achieve automatic cleaning. The use of laser cleaning not only has a higher degree of cleanliness than the chemical cleaning process, but also has little damage to the surface of the object.
By setting different parameters, a dense oxide protective film or metal melting layer can also be formed on the surface of the metal object to improve surface strength and corrosion resistance. The laser-eliminated waste does not substantially pollute the environment and can also be operated remotely, effectively reducing health damage to operators.
Aircraft Old Paint Cleaning
The European laser cleaning system has long been used in the aviation industry. The surface of the aircraft will be repainted after a certain period of time, but the original paint must be completely removed before painting. The traditional method of mechanical removal of paint is likely to cause damage to the metal surface of the aircraft, causing hidden dangers to safe flight. If multiple laser cleaning systems are used, the paint on the surface of an A320 Airbus can be completely removed within two days without damaging the metal surface.
Exterior Wall Cleaning
With the rapid development of the economy, more and more skyscrapers have been established. The problem of cleaning the external walls of buildings has become increasingly prominent. The laser cleaning system provides a good solution to the cleaning of the external walls of buildings through optical fibers. Various kinds of pollutants on stone, metal and glass are effectively cleaned, and the efficiency is much higher than conventional cleaning. It can also remove dark spots and stains on various stones in buildings.
Electronic Component Cleaning
The electronics industry uses lasers to remove oxides: The electronics industry needs high-precision decontamination, which is particularly suitable for laser deoxidation. Before the board is soldered, the component pins must be completely de-oxidized to ensure optimal electrical contact. The pins must not be damaged during the decontamination process. Laser cleaning can meet the requirements of use, and the efficiency is very high. Only one laser beam is needed for one pin.
Precise Instruments Ester Cleaning
The precision machinery industry often needs to remove the esters and mineral oils used for lubrication and anti-corrosion on the parts, usually by chemical methods, while the chemical cleaning often still has residues. Laser deesterification can completely remove the esters and mineral oil without damaging the surface of the parts. The removal of contaminants is accomplished by shock waves. The explosive vaporization of thin oxide layers on the surface of the part creates shock waves that cause the removal of dirt rather than mechanical interaction. The material is completely deesterified for use in the cleaning of aerospace industrial machinery parts. Oil ester removal in the machining of mechanical parts can also be cleaned by laser.
Nuclear Power Plant Reactor Pipe Cleaning
The laser cleaning system is also used for the cleaning of pipelines in reactors of nuclear power plants. It uses optical fiber to introduce a high-power laser beam into the reactor and directly removes radioactive dust. The cleaned material is easy to clean. And because it is a long-distance operation, staff safety can be ensured.
In summary, laser cleaning plays an important role in many fields, such as automobile manufacturing, semiconductor wafer cleaning, precision parts processing and manufacturing, military equipment cleaning, building exterior wall cleaning, cultural relics protection, circuit board cleaning, and precision parts. Processing, manufacturing, liquid crystal display cleaning, chewing gum remnants and other areas can play an important role.
The application of laser cleaning in defense military equipment: such as various aircraft stripping and rust removal, various ship equipment, various weapons and equipment rust removal, all kinds of tank artillery rust, all kinds of parts rust, etc. There is great potential for development. In particular, laser cleaning has obvious advantages such as environmental protection, convenience, safety, and low-cost use, and is a new, efficient, and safe process technology.
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