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Aluminum production process information | | industry
is casting aluminum casting process of production of the first working procedure mainly to: ( 1) Ingredients: according to the need to produce specific alloy nameplate, calculate the amount of all kinds of alloy composition, reasonable collocation a variety of raw materials. （ 2) Melting: to add with good raw materials according to the technological requirements to melt in the furnace, and through the degassing, slag refining method will melt in the mixed slag, gas effectively removed. （ 3) Casting: smelt good under the certain condition of the casting process of aluminum liquid, through the deep well in casting system, cooling casting into all kinds of round bar. Squeeze squeeze is a means of material forming. According to the profile section of product design and produce mould first, using extrusion machine heating good round casting rod extrusion forming of the mould. Commonly used brand 6063 alloy, return when the extrusion with a air cooling quenching process and its after artificial aging process, to complete the strengthening heat treatment. Different type of heat treatment strengthen alloy, the different heat treatment system. Color ( The main speak first oxidation process) Oxidation: aluminum profile extrusion good, its surface corrosion resistance is not strong, must through the anodic oxidation surface treatment to increase the corrosion resistance and wear resistance of aluminum and aesthetic appearance. The main process is: ( 1) Surface pretreatment: use the method of chemistry or physics was carried out on the material surface cleaning, naked pure matrix, for obtain complete, the density of artificial oxide film. Can also be obtained by mechanical means mirror or light ( Inferior smooth) On the surface. （ 2) Anodic oxidation: the surface pretreatment of profiles, under certain technological conditions, substrate surface anodic oxidation, generate a layer of dense, porous, strong adsorbability of AL2O3 membrane layer. （ 3) Hole sealing: will be generated after anodic oxidation membrane pore sealing of porous oxide film, the oxide film pollution prevention, corrosion resistance and wear resistance increased. Oxide film is colorless, transparent, the use of hole sealing before oxidation film of strong adsorption, in some metal salts adsorption sedimentation of film hole, can make the profile appearance show ecru ( Silver) Many outside color, such as: black, bronze, gold and stainless steel color, etc. Characteristics and properties of various surface treatment after aluminum aluminum frosted fabrics: frosted surface aluminum avoids the polished aluminum alloy profiles in architectural decoration exists in certain environment, conditions will form the interference of light, it's like brocade and soft surface, is very popular with the market, but the existing grinding material must overcome sand uneven surface, and can see the shortage of the die lines. Tonal and surface treatment of aluminum, the monotony of silvery white and tan already cannot satisfy architects and exterior wall decoration tile, exterior wall latex is very good, a new type of stainless steel color, champagne color, gold, titanium gold, red series ( Wine red, purplish red, black, purple) Add a color glass can make adornment effect is the icing on the cake. The profile must be by chemical or mechanical polishing after oxidation, the effect is better. Electrophoretic coating aluminum: electrophoresis paint profile surface luster, soft acid rain resistance to cement, mortar, about 90% of Japan's aluminum after electrophoresis paint. Powder electrostatic spraying aluminum: powder electrostatic spraying material are characterized by good corrosion resistance, acid and alkali resistance, salt fog is better than that of oxidation coloring material greatly. Plasma enhanced electrochemical surface ceramic aluminum: the profile is the world's most advanced processing technology. This section product quality is good, but the cost is higher. It has more than 20 tonal, its biggest characteristic is can use tinted like print, material surface colour profusion, adornment effect is excellent titanizing process aluminum titanium plating process, including material selection, polishing, chemical degreasing, clean water to rinse, activation, vacuum plating titanium processing step, its characteristic is that it also includes: a, plating process, and the water after the process is to activate the titanium aluminum in composed of salt, hydrochloric acid and water in a liquid chemical processing, processing temperature to room temperature, processing time until liquid violent chemical reaction; B, electroplating process, the process of solution components including nickel sulfate, nickel chloride and boric acid, sodium dodecyl sulfate, saccharin, brightener, process conditions, the current 3 - 4 a/dm cathode, 5 - 7 a/dm air mixing, 50 - plating solution temperature 9 - 2, the electroplating time for 15 minutes.