With the rapid development of the global internationalized economy, rail transportation has developed rapidly. China has also tightened the infrastructure of railways, and the rail transit equipment manufacturing industry has also presented a broad market prospect and huge development potential. It provides opportunities for the construction of railway equipment manufacturing bases. At the same time, the demand for its supporting service industries has also increased sharply. With the improvement of people's awareness of environmental protection and safety, environmental protection, safe and efficient cleaning and laser cleaning are increasingly favored by the rail transit industry.
Railway rails are laid in an open-air environment. Affected by factors such as rain and sunlight, the surface is prone to rust (or fouling). When the rust layer on the rail surface and inside is serious, it is easy to cause poor rail circuit shunting, affect the transmission of railway signals, and endanger traffic safety. At present, two methods of manual grinding and rust removal and large rail rust removal grinder are mainly used to remove the rust layer dirt on the rails in operation.
Manual grinding and rust removal is the main way of current rail maintenance, but its labor intensity is high, the operation is difficult, the work efficiency is low, the rail is easily damaged, and the cleaning quality is difficult to guarantee.
Large rail derusting and grinding machine, the equipment has large power and large volume. It needs to have its own generator, which needs to be driven by a traction locomotive and run on the railway. Before operation, it needs to submit a transportation plan. The occupation of the line during on-site operation affects the transportation, and the cost is too high, which has a significant impact on the surrounding environment of the rail.
The maintenance and repair of rails under high-speed and high-density driving is related to the reliability of rails during service. Due to its short damage cycle, low service life, and high operation and maintenance costs, it has become a worldwide problem. The ideal solution is laser cleaning. In a new type of environmentally friendly cleaning method, laser cleaning is achieved by irradiating the surface of the workpiece with high-frequency and high-energy laser pulses. The coating layer can instantly absorb the focused laser energy, causing oil stains, rust spots, or coatings on the surface to be instantly peeled off, effectively removing surface attachments or surface coatings at high speed.
In order to ensure the cleaning efficiency requirements, Shengtong Intelligent Laser proposes to integrate different laser combinations through robots to reasonably determine the parameters of each laser process to ensure the efficiency and surface quality of rail cleaning. The existing cleaning system is used for cleaning by means of spiral offset. The cleaning method is a reciprocating procedure, which cleans the surface attachments to reveal the metallic color, and the surface has no oxidation color and no laser traces, and the effect is satisfactory to customers.
At present, laser cleaning has been able to achieve effective cleaning of planes, surfaces, holes, and gaps. It has the advantages of low cleaning cost, environmental protection, high efficiency, good cleaning quality, and no damage to rail substrates. It does not need to apply for railway transportation plans. It can be easily towed by one hand or automatically completed by remote control. These advantages cannot be replaced by existing cleaning methods. Laser cleaning will gradually replace traditional cleaning methods, and its development prospects are greatly optimistic.
