In aluminum titanium alloy extrusion production, the common defects are more intuitive, such as bending, twisting, deformation, slag inclusion.And the defect of adsorbed grain, not careful observation or hand touch is more difficult to find.Its harm is: in the electrophoresis, spraying profile production process, it is difficult to remove, affect the profile surface beauty, resulting in waste.Therefore, in the extrusion production practice to constantly observe and analyze, summarize its causes, take timely measures to reduce or put an end to the emergence of such defects.
There are more and more ways to treat the surface of aluminum and titanium alloy profile in addition to the general oxidation profile, aluminum and titanium alloy profile, electrophoresis profile, spraying profile, fluorocarbon spraying profile, wood grain baking profile and so on.The defect of adsorbed particles has little effect on general oxidized materials, but has great effect on other treatment forms, which mainly affects the appearance of these profiles.In extrusion production, extruded profiles adsorbed particles;After careful observation or by hand on the surface of the section will be found.In the process of sawing the basket, blowing or wiping with the wind, most of the small particles can be removed.But still have a part because of static electricity reason still adsorbed on profile surface.After aging treatment, these particles adhere to the profile surface more closely.In the profile surface pretreatment process, due to the influence of the concentration of bath, some can be removed, but in the profile surface formation of small pits, aluminum titanium alloy profiles some removal, the formation of convex.This problem often appears in the production of electrophoretic and sprayed profiles.
In addition to extrusion processing, coating technology has an important impact on the quality of aluminum titanium alloy profile!In titanium alloy aluminum profiles cooling compressor, the thickness of the color chip to appropriate, cooling speed is slow when the color chip is too thick, material affected cooling degree and the temperature is too high, broken effect at the back of the fine crushing effect and product quality, and the color chip is too thin, although cooling fast production speed is slow, can affect the production capacity of equipment, materials on tablet appear even overflow and affect production.In terms of material cooling, the temperature of cooling water should be low, and the contact area between cooling and material should be large. However, when the temperature is too low, condensation is easy to appear on the tablet, which increases the water content of powder coating for aluminum and titanium alloy profiles and affects the product quality.Pressure sheet cooling by cooling belt type and cooling type two, cooling belt type is divided into wind cooling type and water cooling type, the user to use which type, these problems should be based on the production of industrial travel material and local climate conditions and the factory cooling water strip to decide the choice.
When cooling with cooling water, it is better to use frozen water in consideration of saving water and ensuring water temperature in summer;If tap water, from the consideration of saving resources, it is best to provide water storage tank recycling.When the temperature of tap water is high in summer, it is necessary to use cooling tower and other cooling measures to ensure the cooling effect of cooling water.The thickness and size of the broken paint will affect the cooling effect of the material and the production efficiency and output in the later crushing process.In order to prevent the powder coating products of aluminum titanium alloy profile after fine grinding and improve the production efficiency of fine grinding, the temperature of cooling broken material before fine powder should be as low as possible, the specific material temperature according to the type of coating, to ensure that the final aluminum titanium alloy profile powder coating products after fine grinding with disunity as the standard.