Main application of high frequency welding bending aluminum spacer

Hebei Xingda Insulating Glass Aluminum Strip Factory is a high-tech production enterprise specializing in the production of insulating glass and aluminum spacers. It is located in Langfang Dacheng Development Zone, Hebei Province, which is a hollow aluminum strip production base. It enjoys a superior geographical position and convenient transportation. I main production company, a hollow aluminum, aluminum can be folded, high-frequency welding aluminum, and other accessories. For more information, you are welcome to call us, we will be happy to help you!
High-frequency welding bending aluminum spacer process should be applied

Aluminum tube welding in China using high-frequency power welding steel pipe, began in the 1950s, this process has been widely used, but the use of high-frequency power to weld aluminum tube, is still in the experimental stage, foreign high-frequency welding aluminum The tube began in 1955, and by 1966, the number of high-frequency welded aluminum tubes in the United States had reached about 50% of the total aluminum tubes. The high-frequency welding of aluminum tubes, the welding speed is fast, the weld heat affected area is narrow, the weld quality is good, and the production efficiency is high. Therefore, in the industry of manufacturing aluminum tubes, this will be a developed process. In 2000, our company made special high-frequency equipment for welding aluminum tubes for a branch of the second automobile manufacturing plant in Hubei Province, and achieved success. When welding Φ9×0.3mm aluminum tube, the welding speed is up to 120m/min, and the test is done by pressing and flattening, and the quality is all qualified.
1. Technical difficulty of aluminum tube welding process 1 Aluminum has low melting point, high thermal conductivity, large heat capacity and large thermal expansion coefficient.
2 Aluminum and oxygen have a great affinity, and their oxides can cause inclusions in the weld.
3 Aluminum absorbs a large amount of hydrogen in a liquid state, so the welding of aluminum tends to generate pores.
When the heating temperature of aluminum and its alloy reaches the melting point, the process proceeds from the solid state to the liquid state, and the process proceeds quickly, and there is no color change, so there is a certain difficulty in welding.
2, the requirements for high-frequency power supply for the technical difficulty of the aluminum tube welding process, the following requirements for high-frequency power supply:
1 Use a higher frequency, so that the weld heat affected zone is narrow and the inner wall current of the pipe is reduced.
2 The power density of the weld is required to be large, and the faster the welding speed, the better the weld quality.
3 The anode voltage of the tube anode is required to be stable and smooth, and its pulsation coefficient is required to reach about 1%.
3, several measures used in welding aluminum tube high-frequency power supply 1 use a higher frequency, 600 ~ 700KHz for 100KW equipment, 700 ~ 800KHz for 60KW equipment.
2 The tube anode power supply adopts 12-phase rectification and is equipped with a smoothing filter. Because of the thyristor voltage regulation, it should be operated in a small conduction angle state to reduce the pulsation coefficient after rectification.
3 has a higher output power, so that the aluminum tube has a higher welding speed.
4 reasonable oscillation circuit, should be easy to adjust the load.
4. Application prospects Aluminum has the characteristics of large reserves, high specific gravity, light weight and corrosion resistance. Therefore, the welded aluminum tubes with large output and low cost are widely used in agricultural sprinkler irrigation systems, chemical, textile, light construction and furniture. Occasionally replace the steel pipe. At present, domestic welding aluminum tubes are mostly argon-arc welded, the speed is very low, and high-frequency welding is used instead, which can achieve high speed. The equipment manufactured by our company can achieve a welding speed of more than 120m/min for small-diameter thin-walled tubes. In addition, high-frequency welding can also be used to weld stainless steel pipes, copper pipes, brass pipes, etc., and non-magnetic metal pipes. This new technology is expected to attract the attention of the pipe manufacturing professional factory.

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