Welding process for aluminum profile processing

Abstract

The invention discloses a welding process for aluminum profile processing. The welding process for the aluminum profile processing comprises the following steps of preparing a base material, namely, preparing two aluminum profiles with the diameters of fifteen to thirty millimeters, and adding a silicon material when the aluminum profiles are produced; grinding the positions to be welded, namely,grinding and brushing the surfaces to be ground of the aluminum profiles by using stainless steel wires until the aluminum profiles present metallic luster; removing oxide films from the surfaces of the aluminum profiles, namely, treating the surfaces of the aluminum profiles by a chemical method, and removing the oxide films from the surfaces of the aluminum profiles; preheating before welding, namely, preheating the welded positions of the aluminum profiles by using an hot-air blower; and welding by argon arc welding, adopting a tungsten electrode material in argon arc welding, adding 1.5 to2.6 percent of cerium oxide to pure tungsten, and welding and simultaneously blowing the welded surfaces by using a heat gun. According to the welding process for the aluminum profile processing, first, the welded surfaces of the aluminum profiles are ground and brushed by using the stainless steel wires, and then, the ground and brushed aluminum profiles are subjected to secondary treatment by the chemical method, so that the oxide films on the welded surfaces can be removed effectively, which ensures the strength during welding, and is beneficial to welding.

Description

technical field [0001] The invention relates to the technical field of aluminum material processing, in particular to a welding process for aluminum material processing. Background technique [0002] Aluminum alloy has high specific strength, high fatigue strength, good fracture toughness and low crack growth rate, and also has excellent forming process and good corrosion resistance. It is widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and It has been widely used in the chemical industry. The wide application of aluminum alloy has promoted the development of aluminum alloy welding technology. At the same time, the development of welding technology has expanded the application field of aluminum alloy. Thus the welding effect is affected, and the welding strength is poor, so a welding process for aluminum processing is now proposed. Contents of the invention [0003] Based on the technical problems existing in the background technology...

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Problems solved by technology

[0002] Aluminum alloy has high specific strength, high fatigue strength, good fracture toughness and low crack growth rate, and also has excellent forming process and good corrosion resistance. It is widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and It has been widely used in the chemical industry. The wide application of aluminum alloy has promoted the development of aluminum alloy welding technology. At the same time, the development of welding technology has expanded the application field of aluminum alloy. Thus affecting the welding effect, the welding strength is poor, so a welding process for aluminum processing is now proposed

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