Views: 0 Author: HanTenCNC Publish Time: 2021-12-10 Origin: Site
The welding technology of non-ferrous metals is a big problem in the welding machine industry in the past. Because different metals have significant differences in element properties, physical properties, chemical properties, etc., compared with welding of the same material, the welding mechanism and operation technology of different materials are much more complicated than those of the same material. The emergence of high-power fiber laser welding machine, non-ferrous metal laser welding technology has solved this problem very well. Below, let's take a look at the commonly used non-ferrous metal laser welding machine welding technology.
1. First look at the laser welding of copper alloys. Copper alloys with higher thermal conductivity and reflectivity than aluminum alloys are generally difficult to laser weld. Only under the premise of extremely high laser power and surface treatment to enhance laser energy absorption, can laser welding be successfully performed on a few alloys such as phosphor bronze and silicon bronze.
2. Laser welding of aluminum alloy does not require welding wire. Most aluminum alloys cannot be welded. Laser welding is also difficult. High thermal conductivity and reflectivity make it difficult to generate and maintain aluminum alloy molten pools. Therefore, a higher power density than other materials is required to maintain the weld puddle and perform laser welding. For example, use a high power of about 10KW or higher. The laser beam and gas protection system successfully welded 5000 series aluminum-magnesium alloys, which have excellent seawater corrosion resistance. The state of the material also has an effect on laser welding. For example, laser welding of heat-treated aluminum alloys is more difficult than non-heat-treated alloys. Sometimes in order to change the chemical composition of the weld and prevent welding defects, it is necessary to add filler metal, just like conventional welding.
3. Laser welding of nickel alloys. The laser can be well coupled with the nickel alloy, which makes it easier to perform laser welding and obtain high-quality joints.
4. Laser welding of titanium alloy, laser is very suitable for this alloy, and can obtain high quality and good plasticity welded joints. However, these materials have high oxidation sensitivity and must be welded in an inert atmosphere. High speed can be achieved when welding 1mm alloy plate with laser power above 3KW, the joint is dense, without cracks, pores and inclusions, and the joint performance is good. Comparable with basic materials.
Under the industry trend of miniaturization of consumer electronic equipment, non-ferrous metals stimulate to optimize product performance, and light welder welding technology is widely used in various metal and alloy products. Especially in microelectronic devices and new energy batteries, special-shaped metal joints formed of high-reflectivity metals such as copper and aluminum have good electrical and thermal properties, and their applications are becoming more and more extensive. If you want to know the welding technology of non-ferrous metal laser welding machine, you can also consult a laser engineer to be more accurate according to the actual situation.