EN ISO 6988-1994 en Metallic and Other Non Organic Coatings - Sulfur Dioxide Test with General Condensation of Moisture《金属和其他无机覆盖层 通常凝露条件下的二氧化硫腐蚀试验(ISO 6988-1985)》.pdf

1、CEN EN*ISO*b88 94 Ei 3404589 OLLLOB6 5T4 - BRITISH STANDA$D Metallic and other non-organic coatings Sulfur dioxide test with general condensation moisture of The European Stanchi EN iS6988: 1994 has the staais of a British Standard BS EN Is0 6988 : 1995 CEN EN*ISO*b988 94 3404589 OllrlO87 430 U BS 5

2、466 : Part 8 : 1986 Contents National foreword Committees responsible f Page Inside front cover Back cover Method O. Introduction 1. Scope and field of application 2. References 3. Apparatus and material 4. Test specimens 5. Method of exposure of test specimens National foreword This Part of BS 5466

3、 has been prepared under the direction of the Surface Coatings (other than Paints) Standards Committee. It is identical with IS0 6988-1985 Metallic and other non-organic coatings - Sulfur dioxide test with general condensation of moisture, which has been prepared, with the active participation of th

4、e United Kingdom, by Subcommittee 7, Corrosion tests, of Technical Committee 107, Metallic and other non-organic coatings, of the International Organization for Standardization (ISO). It is intended to publish further Parts as the international work progresses. (m. Ah 1#4.the.J3uluPm committee * for

5、- accepted IC0 -m : 1% ,% Einapean - EN.- : 1acoIisequenzofimpletheEmnpean attention is drawn especially to the following. The comma has been used as a decimal marker. In British Standards it is current practice to use a full point on the baseline as the decimal marker. .Where the words Internationa

6、l Standard appear, referring to this standard, they should be read as Part of BS 5466. In British Standards it is current practice to use the spelling sulphur etc., instead of sulfur, etc. Cross-references IS0 4540-1980 and conventions. The text of the international International standard Correspond

7、ing British Standard BS 5466 Methods for corrosion testing of metallic coatings Part 6 : 1982 Rating of results of corrosion testing on electroplated coatings cathodic to the substrate (Identical) Page 6. Procedure 2 7. Test duration 3 8. Cleaning of specimens after test 3 9. Evaluation of results 3

8、 10. Test report 10 Figures 1. Cabinet with door 2. Hooded apparatus National appendix A. Corrected figures 4 4 5 The Technical Committee has reviewed the provisions of IS0 1462-1973, to which reference is made in clause 9, and has decided that it is acceptable for use in conjunction with this stand

9、ard. The British Standard related to IS0 1462 is BS 3745 : 1970 The evaluation of results of accelerated corrosion tests on metallic coatings. When used as described in clause 9, BS 3745 will give the same results as IS0 1462 and is therefore suitable for use in this connection. Textual errors. When

10、 adopting the text of the international standard, the textual errors given below were discovered. They have been marked in the text and have been reported to IS0 in a proposal to amend the text of the international standard. In figures 1 and 2 an incorrect graphical symbol has been used to represent

11、 water. In order to aid users of this Part of BS 5466, corrected versions of these figures are reproduced in national appendix A. Compliance with a British Standard does not of itself confer immunity from legal obligations. CEN EN*ISO*b788 74 3404587 OLLLOBB 377 H a ENIS06988 odober 1994 Descriptors

12、: Coatings, metal coatings, non organic coatings, tests, corrosion tests. test equipmenf sulphur dioxide English vemion Metallic and other non organic coatings - Sulfix dioxide test with general condedon of moisture (Iso6938: 1985) b) dioxide and opened in the chamber; * by means of a gas jar of kno

13、wn volume filled with sulfur 5 Method of exposure of test specimens 5.1 Place the test specimens in the cabinet. The distance be- tween the test specimens shall be not less than 20 rnm, the distance between the test specimens and the walls or roof of the test cabinet shall be not less than 100 mm. T

14、he distance between the lower edges of the specimens and the surface of the water in the base of the test cabinet shall be not less than 200 rnm. The surface area of contact between a test specimen and its holder shall be as small as possible. 5.2 Arrange the test specimens so that any moisture cond

15、en- sing on any of them or on their supports does not fall on to other test specimens placed at lower levels. 5.3 The orientation of the exposed test surface is critical. In the case of flat surfaces, the angle of inclination to the vertical, unless otherwise specified, shall be 15 I 2 O. 5.4 The to

16、tal exposed surface area of the test specimenis) 0 tested at any one time should be substantially the same and, unless otherwise agreed, shall be 0.5 k 0.1 m2 for the test cabinet of preferred capacity (see 3.1) and proportionately more or less for different sizes of cabinet. 5.5 The supports for th

17、e test specimens shall be of non- metallic material such as glass, plastics material or suitably coated wood. Any material used to suspend the test specimens in the cabinet shall be of synthetic fibre or other inert insulating material; metallic materials shall not be used. 6 Procedure 4 Test specim

18、ens 4.1 The number, type, shape and dimensions of test specimens, shall be selected according to the specification for the coating or product being tested. When not so specified, details concerning the specimens shall be agreed between the interested parties. (See 5.3.) c) by means of a calibrated f

19、lowmeter. 6.1 Introduce 2 b) the type and dimensions of the test specimens or a description of the parts; 8 Cleaning of specimens after test At the end of the test period, remove the test specimens from the cabinet. Before they are examined, allow them to hang freely in a normal indoor atmosphere un

20、til any liquid corrosion products have solidified. First examine them with all corrosion products in position. Any cleaning carried out shall depend on the criteria laid down for the evaluation of the results of the test. 9 Evaluation of results Many different criteria for evaluation of the results

21、of the test may be used to meet particular requirements, for example change in mass, alteration revealed by micrographic examin- ation, or change in mechanical properties. The appropriate criteria will usually be indicated in the specification for the material or product tested. For most routine app

22、lications of the test, only the following need to be considered : a) appearance after test; c) the preparation of the test specimens including any cleaning treatment applied and any protection given to edges or other special areas; di the type of coating with an indication of its surface finish; e)

23、the number of test specimens of each coating or product subjected to the test; f) the methods, if any, used to clean the test specimens after test, with, when appropriate, an indication of the loss of mas resulting from the cleaning operation; g) the test cabinet; the temperature readings within the

24、 exposure zone of h) the test duration (see 6.5 and clause 7); ji posure; the angle of inclination of the test specimens during ex- b ducts; C) the number and distribution of corrosion defects, i.e. pits, cracks, blisters etc. These may conveniently be assess- ed by methods such as those described i

25、n IS0 1462 or IS0 4540, whichever is appropriate; d) of corrosion. p) the results of all inspections. appearance after removing superficial corrosion pro- k) the character of any test panels placed in the cabinet expressly to check the correctness of the operating con- ditions, and the results obtai

26、ned with them; m) whether the test was continuous or discontinuous (see 6.5); n) the concentration of sulfur dioxide used; the time elapsing before the appearance of the first sign 3 BS 5466 : Part 8 : 1986 - - - - -. I CEN EN*ISO*b 94 3404589 OLlLO93 734 1 1 - - - - I Capacity 300 I 10 dd I - - - W

27、ater trough -Gas inlet : I Temperature-regulating device (for example _ - - O O ao Gas inlet Temperature-regulating device (for example rod thermostat) / L Pressure relief vaive Figure 1 - Cabinet with door See national foreword and national appendix A. 4 3l t- Dimensions in millimetres Capacity 300

28、 f 10 dd L Gas inlet 560 A Temperature-regulating device (for example rod thermostat) / LPressure relie vaive Figure 2 - Hooded apparatus Publications referred to See national foreword. For information about BSI services relating to third party certification to suitable British Standard product spec

29、ifications, schemes for the registration of firms of assessed capability, testing and inspection facilities, please contact the Director, Quality Assurance Division, BSI, PO Box 375, Miiton Keynes MK14 6LO. 5 CEN EN*ISO*bB 94 3404589 OLllLO9b 443 H Amd. No. f 0) Date of issue 00 This British Standar

30、d, having been prepared under the direction of the Surface Coatings (other than Paints) Standards committee, was published under the authority of the Board of BSI and comes into effect on 31 January 1986. O British Standards Institution, 1985 ISBN O 580 14915 3 British Standards Institution Incorpor

31、ated by Royal Charter, BSI is the independent national body for the preparation of British Standards. It is the UK member of the International Organization for Standardization and UK sponsor of the British National Committee of the International Electrotechnical Commission. Copyright Users of Britis

32、h Standards are reminded that copyright subsists in all BSI publications. No part of this publication may be reproduced in any form without the prior permission in writing of BSI. This does not preclude the free use, in thecourse of implementing the standard, of necessary details such as symbols and

33、 size, type or grade designations. Enquiries should be addressed to the Publications Manager, British Standards Institution, Linford Wood, Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Surface Coatings (other than Paints) Standards Com

34、mittee (SRC/-) to Technical Committee SRCI1 5, upon which the following bodies were represented: Aluminium Federation Association of Manufacturers of Domestic Electrical Appliances British Anodising Association British Industrial Fasteners Federation Amendments issued since publication BS 5466 : Par

35、t 8 : I986 IS0 6988-1985 Milton Keynes MK14 6LE. The number for telephone enquiries is 0908 320033 and for telex 825777. Contract requirements A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct appli

36、cation. Revision of British Standards British Standards are revised, when necessary, by the issue either of amendments or of revised editions. It is important that UMS of British Standards should ascertain that they are in possession of the latest amendments or editions. Information on all BSI publi

37、cations is in the BSI Catalogue, supplemented each month by BSI News which is available to subscribing members of the Institution and gives details of new publications, revisions. amendments and withdrawn standards. Any person who, when making use of a British Standard, encounters an inaccuracy or a

38、mbiguity, is requested to notify BSI without delay in order that the matter may be investigated and appropriate action taken. The following BSI references relate to the work on this standard: Committee reference SRCI1 5 Draft for comment 82/53055 DC Electronic Engineering Association Institute of Me

39、tal Finishing Metal Finishing Association Ministry of Defence NDT Trade Association Society of Motor Manufacturers and Traders Limited Telecommunication Engineering and Manufacturing Association (TEMA) Zinc Development Association British Standards Institution . 2 Park Street London W1A 2BS . Teleph

40、one 01-629 9000 . Telex 266933 8601 -4 - 1.4k-B SRCII G. CEN EN*ISO*b 94 El 3404589 OLLLO4 670 Page 3 EN IS0 6988 : 1994 Annex ZA (normative) Normative references to international publications with their relevant European publications This European standard incow by dated or unciami reference, provi

41、sions fmm other pubcations. These nomave refmnces are cited at the appmpxiate piaces in the text and the pubdons are listed hereafter. For dated references, subsequent amendments to or Fevisionc of any of hese pubfications apply to this European Standard oniy when incorporated in it by amendment or

42、rwision. For undated references the latest edition of the pubidon referred to applies (iuing amenments). hbiiution Yeu ltie E“D Year Is0 1462 Metallcc coatings - cocstzngs other than thuse anodic to the basis metal- Am tests -Method fW the du.ati4mof#le7iesults Metau.ic coatings - coatings oathodic

43、to the substrate - Rating of elecErqplatad testspecimensszlbjecte& to txmwiun IS04540 tests CEN EN*ISO*b988 94 E3 3404589 OLLLO7 38T k Amendment No. 1 published and effective from 15 April 1995 toBS6466:Part8:1986 Methods for corrosion testing of metallic coatings Part 8. Sulphur dioxide test with g

44、enera condensation of moisture NOTE. The European Committee for Standardizah on (CEN) has accepted Iso6888: 1985 as a European standard desigmw as EN Is0 9 : 1994. This amendment implements EN Is0 6888 : 1994 as a British Standard in the BEN series. Implementation of European Stanar National forewor

45、d At the end of paragraph 1 insert the foliowing new paragmph In 1994 the European Committee for standardization (CEN) accepted Is0 6888: 198.5 as European Stanar EN Is0 !XB : 1994. As a txmequence of implemenng the Eirmpean standard this Briish Standard is renumbered as BS EN Is0 6988 and any refer

46、ence to ES 5466: pait8 &odd be read as a reference to BsEXISO6888. New EN title page and foreword Immediately after the nationai foreword insert the attached new EN tie page and foreword page. AMD 6607/AprilI!&% _-_- CEN EN*ISO*b988 94 3404589 OLLLO8 2Lb BRITISH STANDARD f Metallic and other non-org

47、anic coatings - Sulfur dioxide test with general condensation moisture The European Standard EN Is0 6988: 1994 has the status of a Britishstandard of 3s EN IS0 i988 : 1995 CEN EN*ISO*b988 94 E3 3404589 OLLLO 152 ICs 26.!220.3%35.220.40 Descriptors: Coatings, metai coahgs, non organic coatinkq tests,

48、 conosion tests, test equipment, sulphur dioxide English version Metallic and other non organic coatings - Sulfur dioxide test with general condensation of moisture (Iso6988: 1985) Revtements mtailiques et autres nwtemens non organiques - Essai au dioxyde de souk avec condensation gnmie de Ihumidiit

49、 (Iso6988: 1985) Metallische und andere anorganische enUge - prufung mit Schwefeidioxid unter ailgemeiner Feuchtigkeiskoncensation (Is0 m88 : 1986) This European Standard was approved by CEN on 1994-10-26. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a nationai .standard without any alteration. Up-todak lists and bibhographid refemnces concerning such