The basic difference between them lies in the different output states of the laser. The following compares the two methods based on their characteristics: (1) Pulsed laser welding: It is a classic laser welding method. Its output uses pulsed laser, that is, the laser output has a certain time pulse within a certain period of time, and then repeats the output after a period of time. It is mostly used for welding processes that require high detail and precision, such as welding of metal pipes and small pieces of welds. The advantages are that the weld depth and width are relatively easy to control, the molten pool is small, and the weld detail and precision are high; the disadvantages are that the weld accuracy is poor when the weld is long, and it is greatly affected by material properties and processing temperature.
(2) Continuous laser welding: Its output uses continuous laser, which requires the laser to have a certain stability and be able to output continuously. It is mainly used for welding large areas of aluminum, stainless steel, stainless steel carbon steel and metal foil. The advantages are that the weld length can reach tens of meters, the molten pool is large, the weld is denser, and the welding accuracy and stability are higher; the disadvantages are that the weld width and depth are relatively difficult to control. In short, pulse laser welding is more suitable for welding that requires higher detail and precision, while continuous laser welding is more suitable for welding of large areas. In addition, the specific welding process requirements need to be adjusted considering material properties, processing temperature, welding position, etc.