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Automotive engine filter laser welding

Automotive filter is an accessory of the engine. Because aluminum alloy has excellent physical and mechanical properties and light weight, it has been widely used in the automotive industry, and the filter is one of the more typical application.

Because the chemical activity of aluminum alloy is very strong, the surface is easy to form an oxide film and has refractory properties. In addition, the aluminum alloy has strong thermal conductivity, which is easy to cause incomplete fusion phenomenon during welding. The aluminum alloy has large linear expansion coefficient and strong thermal conductivity. When welding, the defects such as undercut and warpage may be easy to occur, and the mechanical properties of the joint after welding are degraded.

When the aluminum alloy is welded by the conventional argon arc welding and the inert gas fusion-grade arc method, problems such as pores, welding cracks and large welding deformation are easily caused, which restrict its application in the industry.

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

Compared with conventional welding methods, laser welding is a sophisticated welding method with multi functions, high adaptability and reliability, and is easy to automate. Due to the high power density of the laser, the heat input is low during welding. On the basis of ensuring the penetration depth, the welding heat affected zone is small, the welding deformation is small, and the laser welding does not require vacuum, so the laser welding has high quality, high precision and fast speed. At the same time, with the continuous development of high-power, high-performance laser processing equipment, aluminum alloy laser welding technology has been widely used in the automotive industry.

Shenzhen Sunlaser's metal laser welding machine is mainly for welding metal materials and precision parts. It has small heat affected zone and small deformation. The welding speed is fast, the weld seam is flat and beautiful, no need further processing after welding or simple processing is needed. The weld seam has high quality, no pores, precise control, small focusing spot, high positioning accuracy and easy automation.

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