The aluminum alloy profile, which is the raw material of the aluminum alloy box, is used as a spare material for the production of aluminum alloy boxes, so its production process largely determines the quality of the aluminum alloy boxes produced. Aluminum alloy profiles mainly include three major processes: casting, extrusion and coloring.
1. Casting: The first process of aluminum alloy profile production:
It mainly includes the following 3 processes:
(1). Ingredients: According to the specific alloy * number that needs to be produced, calculate the addition amount of various alloy components, and reasonably match various raw materials.
(2). Melting: Put the prepared raw materials into the smelting furnace according to the process requirements to melt, and remove the slag and gas in the melt through degassing and slagging refining methods.
(3). Casting: Under certain casting process conditions, the molten aluminum is cold* casted into round casting rods of various specifications through the deep well casting system.
2. Extrusion: The method of forming aluminum alloy profile:
First, a mold is made according to the profile product, and the heated round cast rod is extruded from the mold by an extruder. During extrusion, an air-cooling quenching process and a subsequent artificial aging process are used to complete the heat treatment and strengthening.
3. Coloring: The extruded aluminum alloy profile has poor surface corrosion resistance, wear resistance and appearance, and it is usually surface treated by oxidation.
The oxidation treatment includes the following 2 processes:
1. Surface pretreatment: Use chemical or physical methods to clean the surface of aluminum alloy profiles. The pure matrix is good for obtaining a complete and dense artificial oxide film.
2. Cationic oxidation: The surface pretreatment of the profile will undergo cationic oxidation on the surface of the substrate under certain process conditions, forming a dense, porous, and strong adsorption film.
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