Non-ferrous metal welding technology is a big problem in welding machine industry before. Because different metals have significant differences in elemental properties, physical properties and chemical properties, the welding mechanism and operation technology of different materials are much more complicated than that of the same material. The emergence of high-power fiber laser welding machine, non-ferrous metal laser welding technology is a good solution to this problem.
1. aluminum alloy laser welding without wire. Most aluminium alloys cannot be welded. Laser welding is also difficult. High thermal conductivity and reflectivity make aluminum alloy molten pools difficult to generate and maintain. Therefore, higher power densities than other materials are required to maintain the weld pool and perform laser welding. For example, use power of around 10KW or higher. Laser beam and gas protection system successfully welded 5000 series aluminum magnesium alloy, which has good corrosion resistance of seawater. The material state also has an effect on laser welding. For example, laser welding of heat-treated aluminum alloys is more difficult than that of non-heat-treated alloys. Sometimes a filler metal is added to change the chemical composition of the weld and prevent welding defects, just as with conventional welding.
2. Laser welding of nickel alloy. The laser can be well coupled to the nickel alloy, which makes laser welding easier, resulting in high-quality joints. However, the thermal crack sensitivity of the alloy should be paid attention to in practice.
3.titanium alloy laser welding, laser is very suitable for laser this alloy, can get high quality and good plastic welding joint. However, these materials have a high oxidation sensitivity and must be welded in an inert atmosphere. The study of typical deep fusion welding of titanium alloy Ti-6A1-4V shows that high speed, compact joints, no cracks, pores and inclusions can be obtained when laser power is more than 3KW when welding 1mm alloy plate. Comparable to the base material.
In the trend of consumer electronic equipment miniaturization industry, non-ferrous metal stimulation in order to optimize product performance, light welding technology is widely used in a variety of metal and alloy products. Especially in microelectronic devices and new energy batteries, special-shaped metal joints formed by high reflectivity metals such as copper and aluminum have good electrical and thermal properties, and their applications are more and more extensive. If you want to know the welding technology of non-ferrous metal laser welding machine, you can also consult laser engineer more accurately according to the actual situation.