Preparation and precautions before welding aluminum profiles

In recent years, with the rapid advancement of China's large-scale infrastructure investment and industrialization process, aluminum profiles have become an important application material in the construction and machinery industries. The output and consumption of the whole industry has grown rapidly, and China has also become a world. The largest aluminum profile production base and consumer market. The aluminum profile industry analysis research report shows that after nearly 10 years of rapid growth, China's aluminum profile industry has entered a new stage of development and has shown many new development trends. Introduce the preparation and precautions before welding aluminum profiles:

Welding of aluminum tubes 1 Welding characteristics: Aluminum and aluminum alloys have strong thermal conductivity, large heat capacity, large coefficient of linear expansion, low melting point and low temperature strength. The welding is difficult, and certain measures should be taken to ensure the welding quality. 2 Pipe and wire cleaning, the surface of the wire and the 50mm sides of the wire are cleaned with acetone, and the surface oxide film is removed with a stainless steel wire to expose the metal luster. The cleaned hole must be welded within 2 hours. The wire is placed in an unused cylinder and must be used within 8 hours, otherwise it will be reprocessed. 3 tungsten rods are selected from tantalum tungsten rods, the argon gas is not less than 99.96%, and the water content should not be more than 50mg/m3. 4 the ambient temperature is not lower than 5 °C, otherwise it should be preheated to 100~200 °C before welding. Relative humidity control.

If you want to weld aluminum at home or in the workshop, then first we need to clarify some of the following things that have been misunderstood by the public: 1. You need to have at least a welding machine worth $4,000 and superb welding techniques to weld aluminum; 2. No You need to practice to complete a good welding operation; 3. You need to buy an expensive welding torch suitable for aluminum welding.

The fact is that a compact small MIG welder can also perform temporary aluminum welding operations after training, using the right welding equipment and performing the correct parameter settings. You will be able to use the MIG welder to complete the welding of various materials in your home, such as grills, backyard storage rooms, docks, and even decorative parts. Even home welding enthusiasts who often weld steel will feel that welding aluminum is a great challenge. The reason is: the aluminum wire is very soft and the wire feeding is quite difficult. In addition, the wire diameter and welder settings typically used for steel may not be suitable for welding aluminum.
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