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Showing posts from January, 2018

Introduction of Hoonly Aluminum Profiles' Surface Treatment and Characteristics

Aluminium profiles are aluminium materials with different cross-section shapes through hot melt and extrusion. The production process of aluminium profiles mainly consists of three processes: melting, extrusion and colouring (including oxidation, electrophoretic coating, fluorine spraying, powder spraying, etc.). The aluminium profiles are divided into: 1. Industrial aluminium profile: mainly used for aeroplanes, trains, industrial radiators, automobiles, electrical appliances, etc. 2. Aluminum alloy profile for building: mainly used for building doors and Windows, curtain walls, indoor and outdoor decoration and architectural structure. Surface treatments are divided into: 1. Anodized aluminium: the surface of the profile is oxidized by anodic oxidation, electrolytic colouring or organic colouring. 2. Electrophoresis coating aluminium: the surface of the profile is combined with anodic oxidation and electrophoresis. 3. Powder spraying aluminium: the surface of the pr

Anodizing/Anodic Oxidation Aluminium: The Difference Between Organic Dyeing & Electrolytic Coloring

The non-ferrous metal of aluminum is a light, soft, easy to oxidation in air, so people come up with a way, it is aluminum oxidation process, in its outer grow a protective film, durable, and can be dyed colorful color, the feast for the eyes. Anodising, or anodic oxidation, is an electrolytic process that deposits a chemically stable oxide layer on the surface of the aluminum. The resultant oxide film is thicker and stronger than aluminum's natural oxide covering.The principle of aluminum anodes is a process of decorating and protecting the aluminum and its alloys. In the process of alumina film is formed on aluminum made by direct current under enough voltage through a suitable sulfuric acid electrolyte, the object is the aluminum anode, and by another material or special graphite sheet (lead) as the cathode, electrify time grew out of the required thickness of oxide film. After the production of the film, except for some aluminum, the next step is to tint. In general, the

How does the time affect the quality of oxide film when anodising?

We talked about two factors that affect the quality of oxide film: Electric Current Density and Temperature , now, we talk about the third factor -- Time. Under the same conditions of solution concentration and other processing technology, with the extension of anodic oxidation time, the generated oxide film will also be gradually thickening (within a certain range), the aperture gap (or pore space) will increase too which is good for dyeing. Under the same process conditions, on the contrary, if the anodic oxidation time is shortened, the generated oxide film will be thin, and the aperture gap (or pore space) becomes less and has trouble dyeing dark. Most of aluminium manufacturers’ anodic oxidation time is less than 20 minutes; except for some special situation, electrochemical polishing (Click on the link to learn more about electrochemical polishing) for example, shortens the anodic time to maintain brightness after anodizing. It’s necessary to extend the anodic time when

Concerned Aluminium Price-Review 2017 is to Outlook 2018

In 2017, The aluminum market continues to rise. In 2017, the domestic and foreign aluminum market has been boosted by the two major policies of China's production capacity and environmental protection. As of the end of December 2017, aluminum prices in the international market rose 26.6%, while domestic aluminum prices rose 17.5%. The aluminium market was dominated by China policy in 2017. In the first half year two policies had been introduced: Work Plan for Clearning up and Rectifying Illegal Projects in the Electrolytic Aluminium Industry (No. 656), and The Beijing-Tianjin-Hebei Region Measures for Prevention and Control of Atmospheric Pollution (2+26 policy). Under the influence of the two policies, China's electrolytic aluminum production capacity and production had declined month by month since June. But after prices soared, stimulated the part of the compliance of new production and spare production capacity and production capacity, the annual output of ele

Electrophoresis of Aluminium Profiles

1. The principle of electrophoresis technology The electrophoresis is basically the same as the traditional light and transparent electrophoresis. The anode electrophoresis is carried out under the action of direct current.With the action of the electric field, the coated particles with charge are moved to the coated workpiece, which precipitates the electrophoresis coating deposited on the surface of the aluminum profile, forming a layer of film.The difference lies in the different types of coatings and the slightly different devices. The electrophoretic coating includes acrylic resin, melamine resin, pigments, solvents, neutralizing agents, additives and other ingredients. Through the application of thermal fixing in the viaduct layer in the particle, the shape of the micro-concave coating during the process of baking was basically unchanged in the baking process, and the appearance of the film was formed uniformly.The degree of extinction can be adjusted by the ratio of high

Extruded Aluminum Process Step Influences Colouring Effect

The influence of extrusion process on oxidation coloring is mainly the influence of mold/die design, extrusion temperature, extrusion speed and cooling method on the surface state and tissue uniformity of extruded profiles. Mold design should be able to make the material fully fit, otherwise, it is easy to appear bright (dark) with defects, the same profile may appear on the color separation; At the same time, the mold/die state and profile surface extrusion pattern also affect the oxidation coloring. Extrusion temperature, speed, cooling and cooling time are different so that the profile is not uniform but also produce color. Anodic oxidation has important influence on electrolytic coloring of chromatic aberration, especially in the process of vertical oxidation production line is easy to appear the two color, vertical oxidation groove depth of 7.5 m, bath and easy to produce temperature difference, temperature has important effect on the anodic oxidation, high temperature, li

The Common Production Problem and Analysis of Die-casting Moulds

https://haluminium.com The cause reason for the molten metal splash when die casting. 1. Cover halves combine imprecisely and have the big gap. 2. The mold clamping force is not enough. 3. The die-casting machine is flexible, and the mounting plates of cover half (fixed die) is not parallel. 4. Support span is large, and the injection pressure (force) deforms the sleeve plate, engendering molten metal spouting. Methods of adjustment 1) Reinstall the mold 2) Increase the mold clamping force 3) Adjust the die-casting machine, ensure the mounting plate of cover half (fixed die) and moving die maintain mutual parallel. 4) Add support plate on the movable mold, increase the stiffness of the clearing. The factors influencing the working life of the pressure nozzle jet: 1. The material and quality of the nozzle jet. 2. The fit clearance of the press charging barrel and jet nozzle. 3. The concentricity of the mold and press charging barrel while installing. 4. Co