SANS 22775-2009 Footwear - Test methods for accessories Metallic accessories - Corrosion resistance《鞋靴 附件的试验方法 金属附件 耐腐蚀性》.pdf

1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA

2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any

3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-22848-4 SANS 22775:2009Edition 1ISO 22775:2004Edition 1SOUTH AFRICAN NATIONAL STANDARD Footwear Test methods for accessories: Metallic acc

4、essories Corrosion resistance This national standard is the identical implementation of ISO 22775: 2004 and is adopted with the permission of the International Organization for Standardization. Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001Tel: +27 1

5、2 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS SANS 22775:2009 Edition 1 ISO 22775:2004 Edition 1 Table of changes Change No. Date Scope National foreword This South African standard was approved by National Committee SABS SC 1016A, Test methods leather and footwear Test methods for leather and

6、 footwear, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in August 2009. Reference numberISO 22775:2004(E)ISO 2004INTERNATIONAL STANDARD ISO22775First edition2004-12-01Footwear Test methods for acce

7、ssories: Metallic accessories Corrosion resistance Chaussures Mthodes dessai pour accessoires: accessoires mtalliques Rsistance la corrosion SANS 22775:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 22775:2004(E) PDF disclaimer This

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12、r. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2004 All rights reservedSANS 22775:2009This s tandard may only be used and printed by approved subscription and freemailing c

13、lients of the SABS .ISO 22775:2004(E) ISO 2004 All rights reserved iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO techni

14、cal committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely w

15、ith the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft Int

16、ernational Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document m

17、ay be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 22775 was prepared by the European Committee for Standardization (CEN) in collaboration with Technical Committee ISO/TC 216, Footwear, in accordance with the Agreement on technica

18、l cooperation between ISO and CEN (Vienna Agreement). Throughout the text of this document, read “.this European Standard.” to mean “.this International Standard.”. SANS 22775:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 22775:2004

19、(E) iv ISO 2004 All rights reservedContents Page Forewordv 1 Scope 1 2 Terms and definitions .1 3 Principle1 4 Apparatus, materials and reagents1 5 Test specimens2 6 Conditioning.2 7 Procedure .2 7.1 Method 1 .2 7.2 Method 2 .3 8 Calculation and expression of results.3 8.1 Method 1 .3 8.2 Method 2 .

20、4 9 Test report 4 SANS 22775:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 22775:2004(E) ISO 2004 All rights reserved vForeword This document (EN ISO 22775:2004) has been prepared by Technical Committee CEN/TC 309 “Footwear“, the se

21、cretariat of which is held by AENOR, in collaboration with Technical Committee ISO/TC 216 “Footwear“. 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 June 2005, and conflicting national standards

22、shall be withdrawn at the latest by June 2005. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greec

23、e, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. SANS 22775:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS

24、 .SANS 22775:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 22775:2004(E) ISO 2004 All rights reserved 11 Scope This document specifies two methods for determining the propensity of a metal surface to either change visually due to co

25、ntamination by atmospheric pollution (Method 1: sulphide tarnishing), or to corrode due to the action of salt water (Method 2: salt water corrosion). 2 Terms and definitions For the purposes of this document, the following term and definition applies. corrosion resistance propensity of a metal surfa

26、ce either not to change visually due to chemical attack by atmospheric pollution, or not to be altered due to the action of salt water 3 Principle 3.1 Method 1 A test specimen is stored in a moist atmosphere containing a low concentration of hydrogen sulphide gas for 1 h. The specimen is then assess

27、ed subjectively for signs of discoloration. 3.2 Method 2 Cotton lawn, saturated with sodium chloride solution, is wrapped around a test specimen. This assembly is then stored in a sealed bag for 24 h at room temperature. The test specimen is then subjectively assessed for signs of corrosion and the

28、lawn assessed for staining. 4 Apparatus, materials and reagents 4.1 Method 1 4.1.1 Kipps generator or other hydrogen sulphide source. WARNING This equipment should be used only by qualified personnel owing to the extremely toxicity of hydrogen sulphide. 4.1.2 Fume cupboard 4.1.3 Glass vessel which c

29、an be sealed and is of sufficient dimensions to contain the test specimen. 4.1.4 Glass tube with volume approximately equal to one thousandth of the volume of the glass vessel (4.1.3). 4.1.5 Means of suspending the test specimen in the glass vessel (4.1.3) so that the gas can circulate freely around

30、 it. NOTE Sewing thread is suitable for small test specimens; larger specimens may require plastic supports underneath. 4.2 Method 2 4.2.1 Sealable polyethylene (PE) bags of sufficient dimensions to contain the cotton lawn (4.2.2) and test specimen. SANS 22775:2009This s tandard may only be used and

31、 printed by approved subscription and freemailing clients of the SABS .ISO 22775:2004(E) 2 ISO 2004 All rights reserved4.2.2 Desized and bleached cotton lawn without finish, with an area approximately five times that of the surface area of the test specimen. NOTE Cotton lawn is a fine plain-woven fa

32、bric, made in various fine sheer qualities. 4.2.3 Sodium chloride solution of density 30 g/dm3, sufficient quantity to fully saturate the cotton lawn (4.2.2). 5 Test specimens 5.1 Methods 1 and 2 each require two test specimens, one to be exposed to the reagents and one to be used as a reference for

33、 visually comparing any damage or discolouration of the exposed specimen. If both methods are to be carried out, then the same reference specimen can be used in both cases. If only one test component is available for each test then cut the specimen into two pieces (see NOTE). The piece containing th

34、e portion considered to be least resistant to corrosion or tarnishing should be exposed to the reagents. If cutting is impracticable record details of flaws, marks and general appearance of the test specimen prior to exposure. NOTE It is permissible to conduct this test on a part of a component prov

35、ided that the part tested contains the portion of the complete component that is considered to be least resistant to corrosion or tarnishing. This may be necessary for a number of reasons such as: Method 1: the complete component is too large to fit into the vessel (4.1.3); Method 2: the complete co

36、mponent is too large to fit into the bag (4.2.1). 5.2 Cut a piece of suitable dimensions from the test specimen. This piece should contain the portion considered to be least resistant to either corrosion or tarnishing. 5.3 Seal any cut edges on the portion of the component to be exposed to the reage

37、nts with epoxy resin and allow the resin to harden for at least 24 h before proceeding with the test. 6 Conditioning The test specimens do not need to be conditioned before testing, nor does the test need to be carried out in a standard atmosphere. 7 Procedure 7.1 Method 1 7.1.1 Fill the glass tube

38、(4.1.4) with water and pour this into the bottom of the vessel (4.1.3). 7.1.2 Seal the vessel and leave it for a minimum of 1 h to enable the humidity inside the vessel to increase and stabilise. 7.1.3 Open the vessel and put one of the test specimens inside, using the sewing thread or plastic suppo

39、rts (4.1.5) to suspend or support the specimen so that it is not in contact with the base of the vessel or the water. 7.1.4 Dry the glass tube fill it with hydrogen sulphide gas (4.1.1) and seal it. WARNING Hydrogen sulphide gas is very toxic and has an unpleasant smell. Extreme care should be taken

40、 not to inhale any of the gas and this test must be conducted in a fume cupboard. SANS 22775:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 22775:2004(E) ISO 2004 All rights reserved 37.1.5 Simultaneously remove the seal from the fil

41、led glass tube and place the tube in the vessel. Immediately reseal the vessel. 7.1.6 After 60 min 5 min remove the test specimen from the vessel. 7.1.7 Place the two test specimens, one which has been exposed to hydrogen sulphide gas and one which has not, alongside each other in bright indirect li

42、ghting conditions. 7.1.8 Visually compare the two test specimens from a range of viewing angles and grade the difference according to the scale specified in 8.1. NOTE 1 The difference between a treated and an untreated test specimen is visually assessed. NOTE 2 Assessment of the relevance of any dam

43、age or discolouration to the test specimen in this test is a very subjective process. It is therefore important to know as much as possible about the proposed application of the material and to include a full description of damage incurred by the test specimen in the final report. It is highly recom

44、mended that the assessment be carried out by several persons, ideally at least three persons. NOTE 3 Nickel plated articles may perform relatively poorly in this test. Severe discolouration should be ignored provided that it is uniform. 7.2 Method 2 7.2.1 Saturate the cotton lawn (4.2.2) with the so

45、dium chloride solution (4.2.3) at room temperature. 7.2.2 Loosely wrap one of the test specimens in the wet cotton lawn ensuring that the contact area between the lawn and specimen is maximised. 7.2.3 Place the test specimen and cotton lawn assembly into the bag (4.2.1). Seal the bag without expelli

46、ng the air from inside so that it is partially inflated. 7.2.4 Store the bag and assembly for 24 h 1 h at room temperature. Then remove the assembly from the bag and take the test specimen out of the cotton lawn. 7.2.5 Fully rinse the test specimen and the cotton lawn in running tap water and allow

47、them both to dry. 7.2.6 Place the cotton lawn and the two test specimens, one which has been exposed to salt water and one which has not, alongside each other in bright indirect lighting conditions. 7.2.7 Visually compare (see NOTE in 7.1.8) the two test specimens from a range of viewing angles and

48、grade the difference according to the scale specified in 8.2. Record also any staining of the cotton lawn. It is highly recommended that the assessment be carried out by several persons, ideally at least three persons. 8 Calculation and expression of results 8.1 Method 1 The following scale shall be

49、 used to grade the difference between the test specimen exposed to hydrogen sulphide gas and the non exposed one: 5 No change 4 Slight uniform change 3 Slight patchy change 2 Marked change SANS 22775:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 22775:2004(E) 4 ISO 2004 All rights reserved1 Very marked change 8.2 Method 2 The following scale shall be used to grade the difference between the test specimen exposed to salt water and the non exp