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Aluminum profile pretreatment control and flexible use
Content source: http://huichenglawyer-sy.com Author: military general release date: June 3, 2020 08:39 times of reading: 963 times Click collection

At this point, the whole pre-treatment process has been discussed, and the basic processing requirements of the products have been completed. For the aluminum profile with decoration requirements, the remaining work, whether it is the coating generated by electroplating, electroless plating, anodizing, etc., is more to provide a protective function and decorative function derived from color Surface treatment of aluminum profile In terms of the effective control and flexible application of each pretreatment process is very important to ensure the stability of its quality and the diversity of appearance requirements; in the several major plates of pretreatment, wax, oil removal, alkali corrosion, neutralization are the basic processing procedures, and the purpose is to provide a clean reference surface for subsequent processing, and the texture etching and polishing are the most important in the pretreatment It is also an important means to complete the diversity of surface effect of pretreatment, and is also the process that most easily causes the quality fluctuation of aluminum profile. Therefore, it is very important to control and flexibly apply these process plates;


 Aluminum profile frame
one Control:

The control methods have been discussed in detail in each chapter of pre-processing. Here, on the whole, some specific control methods are discussed The so-called "two control and one matching" is to control the components of the chemical formula, including the composition of the chemical formula and the concentration ratio between each other; the second refers to the control of the processing method and process parameters in the processing process, including temperature, time, contact mode between the solution and aluminum profile, the placement direction of the profile in the solution and the aluminum profile in the solution The former is also called chemical index control, and the latter can also be called physical index control; "one match" refers to the coordination of metal materials and chemical treatment liquid, and only the formula suitable for a certain alloy material can make the best surface effect on the metal;


two Reasonable choice of method

The selection of the method is mainly based on the requirements of the surface effect. The common surface effect can adopt the following process methods: for the fog surface effect, the ammonium hydrogen fluoride type can be selected, and then according to the Aluminum profile It is necessary to choose the method which does not corrode titanium or use ammonium hydrogen fluoride + Oxidant + It can be etched with acid or ammonium fluoride; it can be etched by acid or acid + Alkali texture etching; phosphoric acid can be selected for polishing after sandblasting + Sulfuric acid, monophosphoric acid, mono sulfuric acid type polishing or electrolytic polishing; tri acid or low yellow smoke type polishing and electrolytic polishing can be used for aluminum profile with mirror surface requirements; phosphoric acid type or phosphoric acid type can be used for bright polishing without mirror surface requirements + Sulfuric acid type polishing; ordinary bright polishing method can be used for drawing aluminum profiles;


three Flexible collocation of methods

In the pretreatment process, the flexible application between the various processes will often receive unexpected results, such as chemical polishing after sandblasting. In order to facilitate the control, the method of secondary polishing can be adopted. At the same time, after the first polishing, acid texture etching can be added to eliminate the adverse phenomena caused by aluminum profile or the first polishing, and then the second polishing is carried out according to the photometric test data In this way, on the one hand, it is easy to control the luminosity, on the other hand, it is easy to control the tail pulling phenomenon after polishing;


For the aluminum profile with mirror surface requirements, scratch polishing can also be used - Electropolishing or electrolytic pre polishing with high sulfuric acid - High phosphoric acid polishing method;


The flexible use of the method does not have certain provisions, which depends on the developer's mastery of the principle, use and relationship between each other of the pretreatment processes, and the surface requirements of aluminum profiles. In a word, we should grasp a rule: our purpose is to process qualified products in batches; adding or reducing processes serve this goal, and there is no need to worry about why more is needed Of course, the flexible use of process methods also has a degree, which is subject to the scale of the production line, the status quo of the production line, the requirements of production efficiency and the restrictions on the processing requirements of aluminum profiles;


In a word, it plays an important role in the quality control of the whole process Surface treatment of aluminum profile It belongs to source control. In this sense, first of all, excellent results can be achieved in the follow-up process "Perfect", and then the production goal of flawless products can be achieved;

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Contact APAs / contact us
Tianjin Aipu industrial aluminum profile Co., Ltd
Tel: 022-87920088
Fax: (avoid malicious advertising) please Contact the enterprise network administrator
Service hotline: 137021119190 (24-hour service hotline)
Q        Q: five hundred and thirty-four million nine hundred and seventy-three thousand nine hundred and six
Email address: lxc@apas.com.cn
Address: a3-2 Saida international industrial city, Xiqing Economic and Technological Development Zone, Tianjin
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