How are aluminum profiles processed into doors and windows?

by:kingtool aluminium machinery     2021-11-02
How are aluminum machine processed into doors and windows? Casting is the first process of aluminum production. The main process is: 1. Ingredients: According to the specific alloy number to be produced, calculate the addition amount of various alloy components, and reasonably match various raw materials. 2. Melting: The prepared raw materials are melted in a smelting furnace according to the process requirements, and the impurities and gases in the melt are effectively removed through degassing, slag removal and refining. 3. Casting: The molten aluminum is cooled and cast into various specifications of round rods through a deep well casting system under certain casting conditions. Extrusion is a method of profile forming. First, according to the section design of the profile product, a mold is manufactured, and the heated round cast rod is extruded with an extruder. The commonly used 6063 alloy undergoes air-cooling quenching and artificial aging during the extrusion process. Treatment, completion of heat treatment, heat treatment systems of different grades of heat-treatable alloys are different. The next step is mainly coloring: oxidation: the surface of the extruded aluminum alloy profile is not strong in corrosion resistance, and anodized surface treatment must be carried out to increase the corrosion resistance, wear resistance and appearance of aluminum. The main process flow is as follows: 1. Surface pretreatment: Use chemical or physical methods to clean the surface of the profile to expose the pure matrix to obtain a complete and dense artificial oxide film. It is also possible to obtain a mirror or matt surface mechanically. 2. Anodizing: Under certain process conditions, the surface of the pre-treated profile is anodized to form a dense, porous, and highly absorbent AL2O3 film. 3. Sealing: sealing the pores of the porous oxide film formed after anodic oxidation to enhance the anti-pollution, corrosion resistance and wear resistance of the oxide film. The oxide film is colorless and transparent. Before sealing, the strong adsorption of the oxide film is used to adsorb and deposit some metal salts in the film pores, which can make the appearance of the profile appear in a variety of colors other than natural (silver-white), such as: black, bronze, Gold and stainless steel colors. 254
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