1、November 2011 Translation by DIN-Sprachendienst.English price group 8No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).IC
2、S 25.220.20; 77.150.10!$|6“1899419www.din.deDDIN 17611SupersedesDIN 17611:2007-11www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 11 pages09.12Anodized products of aluminium and wrought aluminium alloys Technical conditions of delivery,E
3、nglish translation of DIN 17611:2011-11Anodisch oxidierte Erzeugnisse aus Aluminium und Aluminium-Knetlegierungen Technische Lieferbedingungen,Englische bersetzung von DIN 17611:2011-11Produits anodiss en aluminium et en alliages daluminium corroy Conditions techniques de livraison,Traduction anglai
4、se de DIN 17611:2011-11DIN 17611:2011-11 2 A comma is used as the decimal marker. Contents PageForeword . 3 1 Scope . 4 2 Normative references . 4 3 As-delivered quality 5 4 Designing products for anodizing 6 5 Anodizing . 6 6 Requirements 8 7 Testing . 9 8 Batching and scope of testing 10 9 Transpo
5、rt, storage and assembly . 10 Bibliography . 11 Tables Table 1 Surface preparation designation system 7 Table 2 Smallest average and smallest local oxide coating thickness . 8 Table 3 Number of test pieces for determining coating thickness 10 DIN 17611:2011-11 3 Foreword This standard has been prepa
6、red by Technical Committee NA 066-01-09 AA Oberflchenbehandlung von Aluminium of the Normenausschuss Nichteisenmetalle (Nonferrous Metals Standards Committee) of DIN. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. DIN and/or die
7、DKE shall not be held responsible for identifying any or all such patent rights. Amendments The standard differs from DIN 17611:2007-11 as follows: a) In 7.2.1: Normative references to DIN EN 12373-5 have been changed to DIN EN ISO 2931; b) In 7.2.2: Normative references to DIN EN 12373-4 have been
8、changed to DIN EN ISO 2143; c) In 7.2.3: Normative references to DIN EN 12373-7 have been changed to DIN EN ISO 3210. Previous editions DIN 17611: 1964-05, 1969-06, 1981-12, 1985-06, 2000-12, 2007-11 DIN 17612: 1969-06 DIN 17611:2011-11 4 1 Scope This standard specifies the technical delivery condit
9、ions for anodized aluminium and wrought aluminium alloy products which are widely used in the metalworking industry. Anodic oxidation generates an oxide coating on the surface of aluminium, which results in an increased resistance to corrosion. Furthermore, for certain suitable alloys anodizing pres
10、erves the decorative appearance obtained through pretreatment as in Table 1. For the purposes of this standard, semi-finished aluminium products are: sheet, strip and plate as in DIN EN 485-1; cold drawn rod, bars and tube as in DIN EN 754-1; extruded rod, bars, tube and profiles as in DIN EN 755-1;
11、 extruded precision profiles as in DIN EN 12020-1. This standard does not cover: products with oxide coatings produced by hard anodizing for technical purposes; products with oxide coatings produced by coil anodizing; products worked after anodizing. 2 Normative references The following referenced d
12、ocuments are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. DIN EN 485-1, Aluminium and aluminium alloys Sheet, strip and plate Part 1:
13、 Technical conditions for inspection and delivery DIN EN 573-3, Aluminium and aluminium alloys Chemical composition and form of wrought products Part 3: Chemical composition and form of products DIN EN 754-1, Aluminium and aluminium alloys Cold drawn rod/bar and tube Part 1: Technical condi-tions fo
14、r inspection and delivery DIN EN 755-1, Aluminium and aluminium alloys Extruded rod/bar, tube and profiles Part 1: Technical conditions for inspection and delivery DIN EN 12020-1, Aluminium and aluminium alloys Extruded precision profiles in alloys DIN EN ISO 1463, Metallic and oxide coatings Measur
15、ement of coating thickness Microscopical method DIN EN ISO 2143, Anodizing of aluminium and its alloys Estimation of loss of absorptive power of anodic oxidation coatings after sealing Dye-spot test with prior acid treatment DIN EN ISO 2360, Non-conductive coatings on non-magnetic electrically condu
16、ctive basis materials Measurement of coating thickness Amplitude-sensitive eddy current method DIN EN ISO 2931, Anodizing of aluminium and its alloys Assessment of quality of sealed anodic oxidation coatings by measurement of admittance DIN EN ISO 3210, Anodizing of aluminium and its alloys Assessme
17、nt of quality of sealed anodic oxidation coatings by measurement of the loss of mass after immersion in phosphoric acid/chromic acid solution DIN 17611:2011-11 5 3 As-delivered quality 3.1 Anodizing quality For products for which a decorative finish is required after anodizing, semi-finished product
18、s of anodizing quality (EQ) shall be ordered. Semi-finished products of anodizing quality require special measures regarding later decorative use, such as chemical composition, manufacturing parameters, treatment, testing and packaging. Parts to be anodized which are to be joined to form a continuou
19、s surface should be taken from the same batch, because different batches, semi-finished products, alloys and anodizing methods can lead to different surface appearances. The anodizing quality required shall be specially agreed at the time of ordering. Suitable materials as in DIN EN 573-3 are, for e
20、xample: Series 1000 Al Series 5000 Al Mg Series 6000 Al MgSi EN AW-1050A Al 99,5 EN AW-5005 Al Mg1(B) EN AW-6060 Al MgSi EN AW-1070A Al 99,7 EN AW-5005A Al Mg1(C) EN AW-6063 Al Mg0,7Si EN AW-1080A Al 99,8(A) EN AW-5050 Al Mg1,5(C) EN AW-5051A Al Mg2(B) EN AW-5754 Al Mg31)The technical delivery condi
21、tions specified in the relevant standards listed in Clause 1 apply to the surface appearance of the different types of semi-finished product. The intended surface treatment (see Table 1) and the anodizing method to be used (see 5.3) shall be stated when ordering the semi-finished product, e.g. Profi
22、le DIN EN 12020-1 EN AW-6060 T6 EQ E6/C-33. The designation of a semi-finished product shall be in accordance with the relevant standard which covers that type of product, and shall also include the intended surface treatment as in Table 1. 1) EN AW-5754 Al Mg3 cannot be recommended without reservat
23、ion for electrolytic coloration (two-stage process). DIN 17611:2011-11 6 Sheet DIN EN 485-1 EN AW-5251 H18 EQ E6/C Name of product Standard number Material designation Temper Anodizing quality Pretreatment/Colour2)3.2 Standard quality Standard grade semi-finished products are also suitable for anodi
24、zing. A decorative finish cannot be expected, however, even after one of the pretreatment methods as in Table 1 has been carried out. 4 Designing products for anodizing Products which are to receive a decorative finish shall have a design suitable for anodizing. For example, account is to be taken o
25、f necessary contact points, excess widths and lengths, dimensions, and of drainage holes in hollow sections. Welds and extrusion seams may become visible after anodizing. Contact points are a result of the manufacturing process and therefore cannot be avoided. Their location on visible surfaces shal
26、l be agreed upon by the customer and the coating producer. 5 Anodizing 5.1 Materials The works carrying out the treatment shall be informed of the material and temper of the components supplied. 5.2 Pretreatment Mechanical, chemical and/or electrochemical pretreatment is carried out to prepare the s
27、urface of components for anodizing, by which particular surface effects can be obtained. The type of treatment shall be designated using the symbols given in Table 1. Because of technically unavoidable variations, the same treatment may result in different surface effects. The customer and the works
28、 carrying out the treatment shall agree on the appearance required for rolled and extruded semi-finished products or components made from them. If necessary for the purposes of comparison, the permissible range of variation shall be defined by at least two limit samples. 2) For example, C-33, medium
29、 bronze, see Aluminium-Merkblatt O 4 1. DIN 17611:2011-11 7 Table 1 Surface preparation designation system Pretreatment Notes Symbol Type of pretreatment E0 Degreasing and deoxidation Surface preparation before anodizing in which the surface is degreased and deoxidized without further pretreatment.
30、Mechanical surface defects such as scores and scratches will remain visible. Corrosion spots which were hardly visible before treatment may become more visible after processing. E1 Grinding Grinding produces a comparatively uniform, but somewhat dull appearance. Any surface defects present are large
31、ly eliminated but, depending on the coarseness of the abrasive, grinding grooves may be visible. E2 Brushing Mechanical brushing produces a uniform bright surface with visible brush marks. Surface defects are only partly removed. E3 Polishing Mechanical polishing produces a shiny, polished surface,
32、but surface defects are only partly removed. E4 Grinding and brushing Grinding and brushing produces a uniform bright surface, with mechanical surface defects being eliminated. Corrosion spots, which may become visible as a result of E0 or E6 treatments, are eliminated. E5 Grinding and polishing Gri
33、nding and polishing produces a smooth and shiny appearance, with mechanical surface defects being eliminated. Corrosion effects, which may become visible as a result of E0 or E6 treatments, are eliminated. E6 Chemical etching After degreasing, the surface is given a satin or matt finish by treatment
34、 in special alkaline etching solutions. Mechanical surface defects are smoothed out but not entirely eliminated. Any corrosion effects on the metal surface may become visible as a result of this treatment. Mechanical pretreatment before etching can eliminate these effects, but it is advisable to han
35、dle and store the metal correctly to avoid corrosion. E7 Chemical or electrochemical brightening After degreasing the surface in a vapour degreaser or a non-corrosive cleaner, the surface is given a very bright finish by treatment with special chemical or electrochemical brightening processes. Surfa
36、ce defects are only slightly reduced and corrosion effects may become visible. E8 Polishing and chemical or electrochemical brightening Grinding and polishing followed by chemical or electrochemical brightening. This gives a very bright appearance. Mechanical surface defects and incipient corrosion
37、are normally eliminated. NOTE Treatment E0 removes the natural oxide coating, leaving the metal largely intact. All other methods involve considerable metal removal. 5.3 Anodizing process Anodized aluminium can retain its natural colour or can be coloured using various methods such as adsorption dye
38、ing, electrolytic colouring, integral colouring, combined colouring processes, and interference colouring. The customer and coating producer shall agree on the anodizing procedure and, where appropriate, the colouring procedure, but details shall be left to the coating producer. Some specifications
39、and descriptions of anodizing and colouring procedures are given in Aluminium-Merkblatt (Aluminium Instruction Sheet) O 4 issued by the Gesamtverband der Aluminiumindustrie e.V., Dsseldorf 1. 5.4 Sealing Oxide coatings produced by anodizing are to be sealed as a rule. Sealing should preferably be ca
40、rried out in demineralized water boiling at over 96 C or in steam for three minutes per 1 m of coating thickness. Sealing deposits which could impair the decorative appearance of visible surfaces shall either be prevented by means of bath additives, or subsequently removed by cleaning. DIN 17611:201
41、1-11 8 Cold impregnation using nickel fluoride/cobalt fluoride may be used, provided this is properly carried out. It shall be followed by treatment in a warm water bath at over 60 C for one minute per 1 m of oxide coating thickness. 6 Requirements 6.1 Oxide coating thickness Anodic oxide coatings a
42、re classified according to the smallest permissible value of the average thickness (smallest average thickness), in micrometres. Typical thickness classes are given in Table 2. Additional intermediate values for the average thickness may be specified if necessary, but in no case shall the smallest l
43、ocal thickness on a single article be less than 80 % of the smallest average thickness. Table 2 Smallest average and smallest local oxide coating thickness Class Smallest average coating thickness Smallest local coating thickness Location and environment ma, bm 10 10 8 Inside, dry 15 15 12 Inside, o
44、ccasionally wet Outside, rural location with no air pollution (low SO2levels from domestic and industrial heating) 20 20 16 Outside, urban or industrial location (SO2from combustion and industrial gases) 25 25c20 Especially aggressive environment (such as a combination of coastal and industrial infl
45、uences) aIt should be noted that the coating thickness in grooves can be smaller due to the profile geometry and the wettability of the product surface. bIn special cases for which other requirements apply, coating thicknesses of 5 m or smaller are possible. cCoating thicknesses should not be greate
46、r than 30 m because otherwise their quality begins to decrease.6.2 Oxide coating quality Anodizing and sealing shall be carried out so that the coating fulfils the requirements when tested as in Clause 7. 6.3 Surface appearance The contract partners shall come to a detailed agreement on decorative a
47、ppearance, brightness, colour and colour depth of anodized semi-finished products, preferably using limit samples for each type of semi-finished product. Slight variations in hue due to differences in material and the production process are unavoidable. The decorative appearance of components shall
48、be evaluated by viewing them by diffuse daylight at right angles to the visible surface and from the following distances: components to be used outside at ground level: 3 m; components to be used outside on upper floors: 5 m; components to be used inside: 2 m; for evaluating colour, comparison with
49、the limit samples: no more than 1 m; other viewing distances and criteria shall be agreed between customer and coating producer. If the decorative appearance of anodized components is to be assessed after installation, they shall be cleaned before inspection. DIN 17611:2011-11 9 7 Testing 7.1 Measurement of coating thickness 7.1.1 General See Table 3 for the scope of testing. Coating thickness shall be measured using one of the methods described below. 7.1.2 Me
