Aluminum profile production process quality control techniques

Aluminum profile production process consists of aluminum ingot casting, and then extruded aluminum billets, and then through the surface treatment, such as: Anodizing, sandblasting and so on, in the specific operation process each process is very important, here we points out some aspects of special attention, to produce qualified products.

Anodized aluminum profile production including thress processes: casting, extrusion, and oxidation.

1: First process of casting

Aluminum melting and casting

Casting aluminum production. The main process is as follows: (1) ingredients: according to the specific alloy production, calculate the amount of various alloy compositions, reasonable collocation of various raw materials. (2) melting: raw material with good added into the melting furnace melting according to process requirements, and through the gas, slag refining slag, means the complex gas within the melt effectively removed. (3): melting casting aluminum liquid in the casting process conditions, through the deep casting system, cooling and cast into a variety of round billet.

2, Aluminium extrusion

Aluminium extrusion

Aluminium extrusion is aluminium profile forming method. According to the manufacturing product section design, mold, extrusion machine using heated circular rod casting from the die extrusion. Common grade 6063 Alloy, during extrusion would be with artificial aging process of an air-cooled quenching process and thereafter heat treatment, in order to intensify the heat treatment, the alloy of different brands would be different heat treatment system. Reinforcement can be used the W-20 webster hardness to do hardness test.

3,Aluminium oxidation

aluminium oxidation

If only extrusion, the aluminium profile corrosion resistance is not so good, so should be to increase aluminum corrosion resistance, wear resistance and surface by anodic oxidation surface treatment of beauty. The main steps are as follows: (1) surface pretreatment: clean the profile surface by chemical or physical methods, exposed the pure matrix, in order to obtain complete dense artificial oxide film. Also through mechanical means to obtain good mirror or no light effect (matt finish) surface. (2) the anodized oxidation: the profile surface pretreatment, under certain conditions, the anodic oxidation of substrate surface, generating a layer of dense, porous, strong adsorption capacity of AL203 film. (3) sealing: make the film hole sealing porous oxide anode oxidation generated after the closure, the oxide film pollution prevention, improve corrosion and wear resistance. The film is colorless and transparent, the strong adsorption of the sealing of film deposition, adsorption of some metal salt in the film hole, can make the profile appearance color (white) appeared in many colors, such as: outside the black, bronze, golden yellow and the color of stainless steel etc..


Post time: May-24-2018