With the substantial improvement of the economy, people's pace of life is also accelerating, and fast and convenient means of transportation are increasingly sought after by people. In recent years, transportation mode is closely related to people's daily life and is an important part of communication between people; It is an important national infrastructure.

In the manufacturing of railway and passenger car industry, three-dimensional laser technology is mainly used in the processing of plates, profiles and parts. It has the characteristics of fast processing speed, small workpiece deformation, high precision and reduced production costs.

Application of three-dimensional laser cutting technology and laser welding technology in railway and passenger car manufacturing:

1. 3D laser cutting technology

No matter the vehicles flying in the sky or driving on the ground, I believe people are not unfamiliar with "traffic accidents". Nowadays, the quality requirements of rail vehicles are constantly improving. To meet the quality requirements while taking into account the appearance, three-dimensional laser cutting technology is a good choice. Three dimensional laser cutting technology is mostly used in the cutting and processing of metal materials such as stainless steel, carbon steel and aluminum alloy, which are composed of various roof bending beams, side wall columns and engine protective covers. If the three-dimensional laser cutting technology is used to replace other cutting technologies, the cutting accuracy and quality of machined parts can be improved, the problem of working environment pollution can be improved, and the pace of cutting technology progress can be accelerated. Therefore, three-dimensional laser cutting technology has great market application prospects and potential market demand.

2. Laser welding technology

Three dimensional laser welding technology belongs to heat conduction type. It heats the surface of the workpiece by laser radiation, and then diffuses the heat on the surface of the workpiece to the interior through heat conduction, so as to control the parameters of laser pulse width, heat, peak power and repetition frequency, so that the workpiece melts at a certain temperature and forms a specific molten pool. Because of its unique advantages, this technology is gradually applied to the welding of micro and small parts. It is a common technology in many processing workshops. Three dimensional laser welding equipment is often called laser welding machine. According to its working mode, it can be divided into handheld laser welding machine, automatic laser welding machine, laser spot welding machine and optical fiber transmission laser welding machine. Three dimensional laser welding technology uses high heat laser pulse to locally heat the material in a small area, which will not spread to the edge and affect the beauty of the workpiece.

Three dimensional laser cutting equipment and laser welding equipment can be applied to the process of vehicle processing.