Laser welding is a high-efficiency precision welding method that uses a high energy density laser beam as a heat source. Laser welding is one of the important aspects of the application on laser material processing technology.

Additive manufacturing combines computer-aided design, material processing and forming technology, based on digital model files, through the software and numerical control system, special metal materials, non-metallic materials and medical biological materials, use different methods such as extruded, sintered, melted, and light solidification, spraying, stacked layer by layer to produce the manufacturing technology of physical objects. Compared with the traditional processing mode of raw material removal-cutting and assembly, it is a "bottom-up" manufacturing method through the accumulation of materials. This makes it possible to manufacture complex structural parts that were restricted by traditional manufacturing methods in the past.

Laser surface treatment is a method to improve the surface performance by designing and improving the surface of the workpiece. It uses a laser beam to quickly and locally heating the workpiece to achieve local rapid heating or rapid cooling, and can be processed in the atmosphere, vacuum and other environments. By changing the laser parameters, different surface treatment process problems can be solved. The deformation of the workpiece is extremely small, which is a non-contact processing method. According to different surface treatment purposes, it is divided into surface modification treatment (including laser glazing, laser remelting, laser alloying, laser coating) and removal treatment (such as laser cleaning).

Laser marking technology is one of the application areas of laser processing. Laser marking is a method that uses a high-energy-density laser to locally irradiate a workpiece to vaporize the surface material or change the color of the chemical reaction, leaving a durable mark. Laser marking can produce a variety of characters, symbols and patterns, and the character size can be on the order of millimeters to micrometers, which has special significance for product anti-counterfeiting.

Laser cutting is to use a focused high power density laser beam to irradiate the workpiece, so that the irradiated material quickly melts, vaporizes, ablate or reaches the ignition point, and at the same time, the molten material is blown off by the high-speed air flow coaxial with the beam, thereby cutting the workpiece. Laser cutting is one of the thermal cutting methods.

Laser cleaning has the characteristics of no grinding, non-contact, no thermal effect and suitable for objects of various materials, and is considered to be the most reliable and effective solution. At the same time, laser cleaning can solve problems that cannot be solved by traditional cleaning methods.