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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 12373-10:1999 The E
2、uropean Standard EN 12373-10:1998 has the status of a British Standard ICS 25.220.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Aluminium and aluminium alloys Anodizing Part 10: Measurement of mean specific abrasion resistance of anodic oxidation coatings using an abrasiv
3、e jet test apparatus Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 06:55:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 12373-10:1999 This British Standard, having been prepared under the direction of the Sector Committee for Materials and Chemicals, was published under the authority o
4、f the Standards Committee and comes into effect on 15 April 1999 BSI 04-1999 ISBN 0 580 32068 5 Amendments issued since publication Amd. No.DateText affected National foreword This British Standard is the English language version of EN 12373-10:1998. It supersedes BS 6161-10:1987 which is withdrawn.
5、 The UK participation in its preparation was entrusted to Technical Committee STI/32, Anodic oxidation coatings on aluminium, which has the responsibility to: aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for cha
6、nge, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or E
7、uropean publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled International Standards Correspondence Index, or by using the Find facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the neces
8、sary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pag
9、es 2 to 11 and a back cover. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 06:55:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brus
10、sels 1998 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members Ref. No. EN 12373-10:1998 E EUROPEAN STANDARDEN12373-10 NORME EUROPE ENNE EUROPA ISCHE NORM November 1998 ICS Descriptors: surface treatment, anodizing, aluminium, aluminium alloys, abra
11、sion tests, determination, abrasion resistance English version Aluminium and aluminium alloys Anodizing Part10: Measurement of mean specific abrasion resistance of anodic oxidation coatings using an abrasive jet test apparatus Aluminium et alliages daluminium Anodisation Partie 10: De termination de
12、 la re sistance spe cifique moyenne des couches doxyde anodiques a labrasion par essai au jet abrasif Aluminium und Aluminiumlegierungen Anodisieren Teil 10: Messung der mittleren spezifischen Abriebfestigkeit von anodisch erzeugten Oxidschichten durch Abriebpru fung mit einem Schleifmittelstrahl-Pr
13、u fgera t This European Standard was approved by CEN on 14 November 1998. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliogr
14、aphical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a
15、CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norwa
16、y, Portugal, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 06:55:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 2 EN 12373-10:1998 BSI 04-1999 Foreword This European Standard has been prepared by Technical Committee CEN/TC 132, Aluminium an
17、d aluminium alloys, the Secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 1999, and conflicting national standards shall be withdrawn at the latest by May
18、1999. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norwa
19、y, Portugal, Spain, Sweden, Switzerland and the United Kingdom. It is based upon ISO 8252:1987. In this standard, annexes A and B are informative and annex C is normative. EN 12373, Aluminium and aluminium alloys Anodizing, comprises the following parts: Part 1: Method for specifying decorative and
20、protective anodic oxidation coatings on aluminium. Part 2: Determination of mass per unit area (surface density) of anodic oxidation coatings Gravimetric method. Part 3: Determination of thickness of anodic oxidation coatings Non-destructive measurement by split beam microscope. Part 4: Estimation o
21、f loss of absorptive power of anodic oxidation coatings after sealing by dye spot test with prior acid treatment. Part 5: Assessment of quality of sealed anodic oxidation coatings by measurement of admittance. Part 6: Assessment of quality of sealed anodic oxidation coatings by measurement of the lo
22、ss of mass after immersion in phosphoric acid/chromic acid solution without prior acid treatment. Part 7: Assessment of quality of sealed anodic oxidation coatings by measurement of the loss of mass after immersion in phosphoric acid/chromic acid solution with prior acid treatment. Part 8: Determina
23、tion of the comparative fastness to ultra-violet light and heat of coloured anodic oxidation coatings. Part 9: Measurement of wear resistance and wear index of anodic oxidation coatings using an abrasive wheel wear test apparatus. Part 10: Measurement of mean specific abrasion resistance of anodic o
24、xidation coatings using an abrasive jet test apparatus Part 11: Measurement of specular reflectance and specular gloss of anodic oxidation coatings at angles of 208, 458, 608 or 858. Part 12: Measurement of reflectance characteristics of aluminium surfaces using integrating-sphere instruments. Part
25、13: Measurement of reflectivity characteristics of aluminium surfaces using a goniophotometer or an abridged goniophotometer. Part 14: Visual determination of image clarity of anodic oxidation coatings Chart scale method. Part 15: Assessment of resistance of anodic oxidation coatings to cracking by
26、deformation. Part 16: Check for continuity of thin anodic oxidation coatings Copper sulfate test. Part 17: Determination of electric breakdown potential. Part 18: Rating system for the evaluation of pitting corrosion Chart method. Part 19: Rating system for the evaluation of pitting corrosion Grid m
27、ethod. Contents Page Foreword2 Introduction3 1Scope3 2Normative references3 3Definitions3 4Principle3 5Apparatus3 6Procedure4 7Expression of results5 8Test report5 Annex A (informative) Design of abrasive jet test apparatus6 Annex B (informative) Depth survey of abrasion resistance10 Annex C (normat
28、ive) Preparation of standard specimen11 Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 06:55:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 3 EN 12373-10:1998 BSI 04-1999 1)See foreword. Introduction The resistance of anodic oxidation coatings to abrasion can be an important property tha
29、t gives information about the quality of the coating and its potential resistance to erosion or wear. 1 Scope This Part of this European Standard specifies a method of test for comparing the resistance to abrasion of anodic oxidation coatings on aluminium and its alloys with that of a standard speci
30、men or, alternatively, a reference specimen, by the use of a jet of abrasive particles. The mean specific abrasion resistance of an anodic oxidation coating can be determined by the method described. NOTE 1Different batches of the same abrasive are liable to give different results and for this reaso
31、n the test is a comparative one. NOTE 2With suitably designed abrasive jets, and film thickness measuring devices with a small probe, it is possible to conduct a depth survey which indicates how abrasion resistance varies through the coating thickness (see annex B). However, this property is measure
32、d preferably using the abrasive wheel wear test method (EN 12373-91). The method described is applicable to all anodic oxidation coatings of thickness not less than 5 mm on aluminium or its alloys. It is primarily intended for surfaces which are not flat. If suitable flat test surfaces are available
33、, theabrasivewheeltestmethod(EN 1237391)is the preferred method. Production components can be tested without cutting if the apparatus chamber can accommodate these. NOTE 3The method is particularly suitable for small test pieces because the individual test area required is only about 2 mm in diamete
34、r. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or rev
35、isions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN ISO 2360, Non-conductive coatings on non-magnetic basis metals Measurement of coating thickn
36、ess Eddy current method. (ISO 2360:1982). ISO 565, Test sieves Metal wire cloth, perforated metal plate and electroformed sheet Nominal sizes of openings. 3 Definitions For the purpose of this standard, the following definitions apply. 3.1 test piece specimen on which the test is carried out 3.2 sta
37、ndard specimen specially prepared anodized test specimen produced in accordance with annex C 3.3 reference specimen test specimen produced under conditions agreed between the purchaser and the anodizer 4 Principle Dry silicon carbide particles are projected in a stream of dry air or inert gas under
38、carefully controlled conditions onto a small area of the surface to be tested. The test is continued until the base metal is exposed, after which the abrasion resistance of the coating is calculated from either the time taken or the mass of silicon carbide used. The result is compared with that obta
39、ined using a standard specimen (see annex C) or another reference specimen. 5 Apparatus 5.1 Abrasion test apparatus (see Figures A.1 to A.3) 5.1.1 Abrasive jet assembly, consisting essentially of two glass or metal tubes supported rigidly and coaxially. The outer tube is connected to a supply of cle
40、an, dry, compressed air or inert gas, which can be delivered at a carefully regulated flow rate. Dry abrasive particles are supplied to the inner tube, at the exit end of which they mix with the air stream to form an abrasive jet which is directed onto the specimen. No restriction is placed upon the
41、 design of the abrasive jet assembly except that it shall give reproducible results in successive tests, and that it shall allow consistent measurements to be made. NOTEA number of satisfactory designs of jet assembly have been constructed but it has proved difficult in practice to manufacture a ser
42、ies of jets which give identical results, or to make any that are not subject to drift and variations. Designs that have proved satisfactory are given in annex A. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 06:55:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 4 EN 12373-10:1998 BSI 04
43、-1999 5.1.2 Specimen support, comprising an inclined platform on which the specimen is firmly and rigidly supported such that the angle between the plane of the test area and of the jet axis is in the range 458 to 558. The jet is usually vertical. NOTEIn A.2 is described an apparatus where the angle
44、 is 558; A.3 describes a different form of apparatus where the angle is approximately 458. The larger angle produces a less elliptical test area, more rapid abrasion, and a sharper end point. 5.1.3 Air or inert gas supply, fed to the outer tube from a compressor or gas cylinder and controlled accura
45、tely by means of a regulating valve and a flowmeter or manometer situated near the apparatus. The air or inert gas shall be dry, or have constant low humidity. NOTE 1The gas can be conveniently dried by passing it through tubes containing silica gel. Compressed air passed through a holding reservoir
46、 where condensed water vapour is collected will have a satisfactory and fairly constant humidity. NOTE 2Typical flow rates used in practice are from 40 l/min to 70 l/min, with a pressure typically of about 15 kPa. When the flow rate has been selected for any particular jet assembly, it should, so fa
47、r as is possible, be maintained throughout the life of the jet nozzle. 5.1.4 Hopper, for storage of the abrading medium and capable of supplying this at a steady rate of (201) g/min to (301) g/min. 5.2 Abrading medium Silicon carbide particles of a grade recommended by the manufacturer of the appara
48、tus used. A suitable grade of abrasive is 125 mm mesh size (see ISO 565:1990). The abrading medium shall be free from moisture and shall be dried before use in a shallow tray at 105 8C and passed through a coarse sieve (for example, 180 mm or 300 mm nominal aperture size) to ensure freedom from larg
49、e particles or fibres which might interfere with the rate of abrasive flow. The dried medium may be re-used up to 50 times; after each use the medium should be dried, passed through a coarse sieve and stored in a clean tightly closed container. NOTEAmbient humidity has little effect on the test result, but can have a very considerable effect if the medium is re-used without drying. 6 Procedure 6.1 Standard specimen Prepare the standard specimen using the method specified in annex C. 6.2 Test piece Cut a suitably s
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