DIN Anodized products of wrought aluminium and wrought aluminium alloys – Technical conditions of delivery. standard by Deutsches. version of DIN The table contains the from Schüco offered surface pre- treatments E1 to E6 including comments for the limits. According to DIN , the. DIN EN ISO Anodizing of aluminium and its alloys – Estimation of loss of absorptive power of anodic oxidation coatings after sealing – Dye-spot.
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Anodizing creates an oxide coating 1711 the surface of aluminium, protecting it more effectively from corrosion, and making durable decorative effects produced using a treatment as in table 1.
Anodic oxidation generates an oxide coating on the surface of aluminium, which results in an increased resistance to corrosion.
Cross-Reference DIN 17611 Anodizing Standard
Degreasing It occurs in three levels: External din internal usage: All other methods involve considerable metal removal. The type of treatment shall be denoted using the symbols fin in table 1. With the insignificant din of material we achieve a smooth, bright surface without scratches and with high shine. Page 5 DIN Grinding and polishing are followed by chemical or electrochemical burnishing, producing a mirror finish.
This standard is also available to be included in Standards Subscriptions. Some specifications and details of anodization and coloration procedures are given in Aluminium-Merkblatt O 4.
Because of unavoidable technical variation, the same treatment may result in different surface effects.
Cross-reference DIN anodizing standard
Surface defects are reduced but not removed, and corrosion spots may become visible. This can be prevented by further treatment before pickling, but it is advisable to treat and store the material so that corrosion cannot occur.
C, medium bronze; see Aluminium-Merkblatt O4 3. Grinding produces a relatively uniform, but dull surface. Grinding and brushing produce a uniformly shiny surface and remove surface defects and corrosion spots unlike treatments E0 and E6. Contact points are a result of the manufacturing process and cannot therefore be avoided.
Notation system for surface pretreatment Symbol E0 Type of pretreatment Degreasing and deoxidation Grinding Brushing Polishing Grinding and brushing Grinding and polishing Pickling Explanatory notes Surfaces are degreased and deoxidized before anodizing, leaving any faults such as indentations and scratches visible. After degreasing the surface using steam or a non-corrosive cleaning agent, the surface is given a mirror finish in a special chemical or electroplating bath.
It shall not exceed 20 S for uncoloured coatings. Surface defects and early corrosion spots are generally removed. Need more than one copy?
The versatile use of aluminium is assured with its suitable surface protection as the raw aluminium oxidizes very quickly on air.
This standard not cover: Mitigate liability and better understand compliance regulations Boost efficiency: The intended surface treatment see table 1 and the anodizing method to be used see subclause 5. The thickness of the coating on the visible surface shall be measured to an accuracy of 0,2 m three to five times at each of at least five points, 0,5 cm 2 in area, and the mean of the measurements for each point determined. The decorative appearance of components shall be assessed by viewing them using diffuse daylight from the following distances, at right angles to the visible surface: The anodised layer can be coloured in different ways.
Electrochemical polishing Aluminium gains with it a shiny surface which is however very sensitive and therefore must proceed to the further treatment of anodizing as soon as possible. Already Subscribed to this document. Add to Alert PDF. The customer and supplier shall agree on the procedures to be used for anodizing and coloration, but details shall be left to the supplier.
Recommended layer thickness at anodizing.
In dib way treated surface of aluminium is resistant to weather, mechanical and some chemical influences. Surface defects are only slightly reduced, di corrosion spots may become visible.
Components which have been treated by different anodizing processes shall not be batched together for testing.
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