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 978-0-626-23194-1 SANS 735:2009Edition 2.2SOUTH AFRICAN NATIONAL STANDARD Cathode copper Published by SABS Standards Division 1 Dr Lategan Road Groe
4、nkloof Private Bag X191 Pretoria 0001Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS SANS 735:2009 Edition 2.2 Table of changes Change No. Date Scope Amdt 1 2008 Amended to change the designation of SABS standards to SANS standards and to update the definition of “acceptable“. Amdt 2 2
5、009 Amended to delete a note and referenced standard methods that have been withdrawn. Acknowledgement The SABS Standards Division wishes to acknowledge the valuable assistance derived from publications of the following organizations: American Society for Testing and Materials British Standards Inst
6、itution Foreword This South African standard was approved by National Committee SABS TC 1078, Engineering materials Non-ferrous metals, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This document was published in October 2009. This
7、 document supersedes SANS 735:2008 (edition 2.1). A vertical line in the margin shows where the text has been technically modified by amendment No. 2. SANS 735:2009 Edition 2.2 1 Contents Page Acknowledgement Foreword 1 Scope . 3 2 Definitions 3 3 Requirements . 3 4 Marking 4 5 Sampling and complian
8、ce with the specification . 4 6 Inspection and methods of test 5 Appendix A Applicable standards 6 SANS 735:2009 Edition 2.2 2 This page is intentionally left blank SANS 735:2009 Edition 2.2 3 Cathode copper 1 Scope 1.1 This specification covers the requirements for electrolytic copper in the form o
9、f cathodes or portions of cathodes. NOTE Deleted by amendment No. 2. 2 Definitions For the purposes of this specification the following definitions shall apply: acceptable acceptable to the authority administering this standard, or to the parties concluding the purchase contract, as relevant Amdt 1
10、identification mark a mark by which the origin of the material comprising the lot can be traced lot not less than 1 kg and not more than 20 000 kg of cathodes or portions of cathodes, bearing the same identification mark, from one manufacturer, submitted at any one time for inspection and testing 3
11、Requirements 3.1 Chemical composition The chemical composition of cathode copper shall comply with the chemical requirements laid down in table 1. Table 1 Chemical requirements 1 2 3 Requirements %, (m/m) Element min. max. Copper (silver being counted as copper) . 99,90 Bismuth 0,001 0 Lead . 0,005
12、Total metallic impurities (excluding silver) 0,03 SANS 735:2009 Edition 2.2 4 3.2 Physical requirements The cathodes shall be tough, dense, and reasonably free from loose or brittle lumps, nodules and other protrusions. The surface shall be free from slime and copper sulphate. 4 Marking 4.1 The foll
13、owing information shall appear in legible and indelible marking on each cathode, or bundle of cathodes, or portions of cathodes, or container in which portions of cathodes are packed: a) manufacturers name or trade name or trade mark; b) an identification mark by means of which the relevant producti
14、on data and control test results can be traced. 5 Sampling and compliance with the specification1)5.1 Sampling The following sampling procedure shall be applied in determining whether a lot complies with the relevant requirements of the specification. The sample so taken shall be deemed to represent
15、 the lot. From the lot take at random the number of cathodes or portions of cathodes shown in column 2 of table 2 relative to the appropriate lot size shown in column 1. Table 2 1 2 Lot size Sample size mass in kg number of cathodes or portions of cathodes 1 1 500 All or 5* 1 501 7 000 10 7 001 20 0
16、00 15 Over 20 000 25 * Whichever is less. 5.2 Compliance with the specification The lot shall be deemed to comply with the requirements of the specification if, after inspection and testing, the sample taken in accordance with 5.1 is found to comply with all the requirements of the specification. 1)
17、 This section applies to the sampling for inspection and testing before acceptance or rejection of single lots (consignments) in cases where no information about the implementation of quality control or testing during manufacture is available to help in assessing the quality of the lot. It is also u
18、sed as the procedure for adjudicating in cases of dispute. SANS 735:2009 Edition 2.2 5 6 Inspection and methods of test 6.1 Inspection Inspect the sample drawn in accordance with 5.1 for compliance with the requirements of 3.2 and 4.1. 6.2 Preparation of composite sample for testing a) By brushing t
19、he surfaces of all the cathodes or portions of cathodes (as relevant) taken in accordance with 5.1 with a wire brush, remove all extraneous matter. b) Using a suitable drill, drill once through each cathode or portion of cathode as follows: 1) Full cathodes: Drill at a point that lies on one of the
20、diagonals. Select the points to be drilled so that if all were on one cathode they would be equally spaced along the diagonal. 2) Portions of cathodes: Drill at any point randomly selected. NOTE Do not use any lubricant and do not apply sufficient pressure to cause oxidation of the drillings. c) Cut
21、 up and thoroughly mix all the drillings to form a composite sample. By using a magnet, remove any extraneous iron introduced by the drilling. Remove superficial oxides by washing the composite sample in 20 % (v/v) acetic acid; rinse a few times with distilled or de-ionized water and then with alcoh
22、ol. Finally rinse in acetone and place in a drying-oven at 80-90 C until dry. Store in a tightly stoppered bottle. 6.3 Methods of test 6.3.1 General Any acceptable methods of chemical analysis may be used to assess compliance with the requirements of 3.1. Amdt 2 6.3.2 Deleted by amendment No. 2. 6.3
23、.3 Deleted by amendment No. 2. 6.3.4 Deleted by amendment No. 2. SANS 735:2009 Edition 2.2 6 Appendix A Applicable standards Referenced standards deleted by amendment No. 2. SABS SABS Standards Division The objective of the SABS Standards Division is to develop, promote and maintain South African Na
24、tional Standards. This objective is incorporated in the Standards Act, 2008 (Act No. 8 of 2008). Amendments and Revisions South African National Standards are updated by amendment or revision. Users of South African National Standards should ensure that they possess the latest amendments or editions
25、. The SABS continuously strives to improve the quality of its products and services and would therefore be grateful if anyone finding an inaccuracy or ambiguity while using this standard would inform the secretary of the technical committee responsible, the identity of which can be found in the fore
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