威廉希尔官方下载Feb 21, 2020
With the rapid development of the world economy nowadays, people's lives are constantly improving, and increasingly fast transportation methods have become more and more urgent needs of people. The railway is closely related to people's daily life. It is one of the important components of transportation hubs. It is an important national infrastructure and directly affects people's vital interests.
In order to effectively improve the operational efficiency of railways, the development of railways is now mainly in the direction of high-speed passenger cars, subway passenger cars, light rail cars, high-speed heavy-duty trucks, etc. To realize these needs, trains must be lightweighted. A more common practice now is to use aluminum alloy materials in the manufacturing process of passenger cars. Because aluminum alloy materials have the characteristics of light weight, corrosion resistance, smooth appearance, complex curved surfaces, and high specific strength, they can effectively reduce passenger resistance and Quality, increased overload. In order to effectively improve the processing efficiency of aluminum alloy materials and ensure the safety of passenger cars, it is necessary to change the traditional processing methods and use laser technology for processing and manufacturing.
At present, the application fields of laser technology in the manufacture of railway carriages are mainly places such as sheet and profile blanking, welding of key components, material transportation of automatic production lines, and identification and transplantation. It has fast processing speed, small workpiece deformation, high precision and can save materials And other characteristics.
Laser marking technology
The laser marking machine is a permanent marking with a laser beam on the surface of various materials. The effect of marking is to expose deep substances through evaporation of surface substances, or to "etch" traces through the chemical and physical changes of surface substances caused by light energy, or to burn away some substances by light energy, showing the required etching Pattern, text. The laser marking machine is a permanent marking with a laser beam on the surface of various materials. Laser marking machines can be divided into CO2 laser marking machines, semiconductor laser marking machines, YAG laser marking machines, and fiber laser marking machines according to different lasers. The laser marking machine should be used in a dust-free, 10 ℃ -35 ℃ environment as much as possible to keep the optical devices dry and dust-free. The laser marking machine is mainly used in some places that require finer and higher precision.
Laser welding technology
Laser welding machine, the welding process is thermally conductive, that is, the surface of the workpiece is heated by laser radiation. The surface heat is diffused to the inside by thermal conduction. By controlling the parameters of the laser pulse width, energy, peak power and repetition frequency, the workpiece is melted to form a specific melt. Pool. Due to its unique advantages, it has been successfully used in precision welding of micro and small parts. Laser welding machine is a machine for laser material processing, also known as laser welding machine and laser welding machine. According to its working mode, it can be divided into laser mold welding machine (manual welding machine), automatic laser welding machine, and laser spot welding. Machine, optical fiber transmission laser welding machine, laser welding uses high-energy laser pulses to locally heat the material in a small area. The energy of laser radiation is diffused into the material through heat conduction, and the material is melted to form a specific molten pool to achieve welding. the goal of.
Laser cutting technology
With the continuous improvement of rail vehicle quality requirements, 3D laser cutting technology, as an important processing method, has been applied in rail vehicle manufacturing in recent years. Robot laser cutting technology has the advantages of high accuracy, strong flexibility, and wide processing range. It can be used for cutting and processing of various three-dimensional stamping parts. At present, in rail vehicle manufacturing, although domestic and foreign rail vehicle manufacturers have widely adopted laser processing and robotics, the application of robot laser cutting technology is at the beginning stage. It is mainly used for cutting 3D stamping parts of stainless steel, carbon steel and aluminum alloy, such as 3D cutting heads and holes for various curved roof beams, side wall pillars and other parts. Due to the use of robotic laser cutting technology, it replaces the original backward technology of cutting three-dimensional shapes by manual plasma after cutting with a toothless saw, which improves the cutting accuracy and quality of the workpiece, solves environmental pollution problems such as grinding wheel dust in the workplace, and improves labor The environment has promoted the progress of cutting technology, and has a large market application prospect and potential market demand.
威廉希尔官方下载ing the current laser technology for processing can not only effectively ensure the robustness of the rail train, but also use computer control to effectively control the yield of the processed workpiece, and the surface of the processed workpiece will not be lost during processing. The dimensions can be precisely controlled. Like current laser cutting machines, laser welding machines, and laser marking machines, they are widely used in the railway processing industry. With the continuous changes in the demand for rail trains today, different types of rail trains with different needs are constantly developing. The demand for processing needs to be processed using current high-paying processing methods, and the application of laser technology is one of them. It is believed that in the near future, rail trains will make people's travel more convenient, safe and efficient, and the application of laser technology in the rail train manufacturing industry will be more closely.