Laser welding machine is a widely used equipment in industrial production. Unlike traditional welding machines, it uses laser for processing, so it is widely used in industries such as shipbuilding, automobile manufacturing, leather, cloth, and hardware manufacturing. In the processing of these industries, it has become a safe and reliable production welding equipment. Therefore, laser has changed the development history of welding equipment. Everyone knows about laser welding machines, but you may not know much about the principle of laser welding machines.

1. Laser welding machine uses high-energy laser pulses to locally heat the material in a small area. The energy of laser radiation diffuses into the interior of the material through heat conduction, and the material is melted to form a specific molten pool.

2. Laser welding machine manufacturers use continuous or pulsed laser beams to achieve this. The principle of laser welding can be divided into heat conduction welding and laser deep melting welding. When the power density is less than 104~105W/cm2, it is heat conduction welding, at which the melting depth is shallow and the welding speed is slow; when the power density is greater than 105~107W/cm2, the metal surface is heated and concave into a "hole", forming a deep melting weld, which has the characteristics of fast welding speed and large depth-to-width ratio.

3. When the laser welding equipment adopts the penetration mode welding, the input heat energy is small, the molten pool is small and deep, and a lower average can be used. Due to the need to maintain the small hole during the welding cycle, the small hole mode welding only uses a continuous or mode continuous laser. The depth-to-width ratio of the small hole welding molten pool is high, reaching 6:1, which is a highly efficient welding process.

What is the working principle of the laser welding machine? Tianhong Laser Editor will share it with you here. Laser welding machines usually do not use filler solder, so the fitting clearance between parts must be less than 15% of the thickness of fine parts. All parts of the parts must be relatively clean, and the heat energy input and weld shape during welding can be controlled by parameters and components, and heat conduction mode welding, penetration welding, and small hole welding are performed respectively.