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 978-0-626-21037-3 SANS 3077:2008Edition 1ISO 3077:2001Edition 3SOUTH AFRICAN NATIONAL STANDARD Short-link chain for lifting purposes Grade T (types
4、T, DAT and DT), fine-tolerance hoist chain This national standard is the identical implementation of ISO 3077:2001 and is adopted with the permission of the International Organization for Standardization. Published by Standards South Africa 1 dr lategan road groenkloof private bag x191 pretoria 0001
5、 tel: 012 428 7911 fax: 012 344 1568 international code +27 12 www.stansa.co.za Standards South Africa SANS 3077:2008 Edition 1 ISO 3077:2001 Edition 3 Table of changes Change No. Date Scope National foreword This South African standard was approved by National Committee StanSA TC 5120.22, Lifting e
6、quipment, in accordance with procedures of Standards South Africa, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in May 2008. Reference numberISO 3077:2001(E)ISO 2001INTERNATIONAL STANDARD ISO3077Third edition2001-12-01Short-link chain for lifting purposes Gra
7、de T, (types T, DAT and DT), fine-tolerance hoist chain Chanes de levage maillons courts Chanes de tolrance serre pour palans, classe T (types T, DAT et DT) SANS 3077:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 3077:2001(E) PDF di
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11、 rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country o
12、f the requester. 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.ch Web www.iso.ch Printed in Switzerland ii ISO 2001 All rights reserved SANS 3077:2008This s tandard may only be used and printed by approved subscription and fre
13、emailing clients of the SABS .ISO 3077:2001(E) ISO 2001 All rights reserved iiiContents Page Foreword.iv 1 Scope 1 2 Normative references1 3 Terms and definitions .1 4 General conditions of acceptance .2 5 Dimensions 2 5.1 Nominal size, dn.2 5.2 Material diameter and tolerance.3 5.3 Pitch and widths
14、 4 5.4 Weld diameter 4 5.5 Length dimensionally affected by welding .4 6 Material and manufacture .4 6.1 Quality of material .4 6.2 Heat treatment5 6.3 Working load limits (WLL) 5 6.4 Mechanical properties.6 7 Verification of safety requirements .8 7.1 Size of lot and selection of samples8 7.2 Manuf
15、acturing proof force, breaking force and total ultimate elongation.8 7.3 Bend deflection9 7.4 Hardness test .9 7.5 Case depth determination.10 7.6 Fatigue resistance test, types DAT and DT.11 8 Marking .11 8.1 Grade marking .11 8.2 Identification marking .12 8.3 Inspection marking12 9 Manufacturers
16、certificate.12 10 Information for assembly into the hoist and for use .12 10.1 Chain assembly into the hoist12 10.2 Chain use12 10.3 Inspection.13 Annex A (normative) Bases for the calculation of mechanical properties and tolerances on dimensions.14 Annex B (normative) Selection criteria for chain f
17、or power-driven hoists (types T, DAT and DT) 16 Annex C (informative) Approximate mass of Grade T hoist chain.23 Bibliography24 SANS 3077:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 3077:2001(E) iv ISO 2001 All rights reserved For
18、eword 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 technical committees. Each member body interested in a subject for which a tech
19、nical 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 with the International Electrotechnical Commission (IEC) on all matters of
20、 electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated t
21、o 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 International Standard may be the subject of patent rights. ISO shall not be held r
22、esponsible for identifying any or all such patent rights. International Standard ISO 3077 was prepared by Technical Committee ISO/TC 111, Round steel link chains, chain slings, components and accessories, Subcommittee SC 1, Chains and chain slings. This third edition cancels and replaces the second
23、edition (ISO 3077:1984), which has been technically revised. Annexes A and B form a normative part of this International Standard. Annex C is for information only. SANS 3077:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .INTERNATIONAL ST
24、ANDARD ISO 3077:2001(E) ISO 2001 All rights reserved 1Short-link chain for lifting purposes Grade T, (types T, DAT and DT), fine-tolerance hoist chain 1 Scope This International Standard specifies requirements for fine-tolerance hoist chain of Grade T (types T, DAT and DT) for use with manually oper
25、ated or power-driven chain hoists1). It is applicable to electrically welded, round, steel short-link chain, heat-treated and tested in accordance with the general conditions of acceptance of ISO 1834, in the nominal chain size range from 3 mm to 22 mm. NOTE Type T chain, but not type DAT or DT, may
26、 be used in lifting equipment other than chain hoists. Chain of grades TH and VH, intended specifically for use in hand-operated hoists, will be the subject of future International Standards. 2 Normative references The following normative documents contain provisions which, through reference in this
27、 text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most
28、 recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 643:2), Steels Micrographic determination of the apparent g
29、rain size ISO 1834, Short link chain for lifting purposes General conditions of acceptance ISO 4301-1, Cranes and lifting appliances Classification Part 1: General ISO 4965, Axial load fatigue testing machines Dynamic force calibration Strain gauge technique ISO 6507-1, Metallic materials Vickers ha
30、rdness test Part 1: Test method EN 10002-2:1991, Metallic Materials Tensile Testing Part 2: Verification of the Force Measuring System of the Tensile Testing Machines 3 Terms and definitions For the purposes of this International Standard, the terms and definitions given in ISO 1834 and the followin
31、g apply. 3.1 gauge length specified multiple pitch length of chain 1) Types DT and DAT possess a surface hardness greater than their core hardness, offering greater resistance to wear, and are for use in power-driven hoists only. 2) To be published. (Revision of ISO 643:1983) SANS 3077:2008This s ta
32、ndard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 3077:2001(E) 2 ISO 2001 All rights reserved 4 General conditions of acceptance The chain shall comply fully with the requirements of ISO 1834 as well as those of this International Standard. 5 Dimens
33、ions (see Figure 1) 5.1 Nominal size, dnA selection of nominal sizes is given in Table 1. Other nominal sizes may be used, provided the dimensions and tolerances are calculated in accordance with annex A. l multiple pitch length p pitch (internal link length) dmmeasured diameter of the material, exc
34、ept at the weld dwmeasured diameter of the material at the weld e length affected by welding, on either side of the centre of the link W3external link width over the weld W4internal link width at the weld Figure 1 Link and chain dimensions SANS 3077:2008This s tandard may only be used and printed by
35、 approved subscription and freemailing clients of the SABS .ISO 3077:2001(E) ISO 2001 All rights reserved 3Table 1 Typical dimensions Dimensions in millimetres Dimension Pitch Width Gauge length 11 pnWeld diameter nominal tolerance nominal toleranceainternal W4external W3nominal toleranceadwdnpnmin.
36、 max. max. 3 0,2 9 0,180+3,6 10,2 99 0,50+3,3 4 0,2 12 0,250+4,8 13,6 132 0,60+4,3 5 0,2 15 0,30+6 17 165 0,80+5,4 6,3 0,2 19 0,40+7,2 20,4 209 10+6,5 7,1 0,3 21 0,40+8,4 23,8 231 1,10+7,6 8 0,3 24 0,50+9,6 27,2 264 1, 30+8,6 9 0,4 27 0,50+10,8 30,6 297 1, 40+9,7 10 0,4 30 0,60+12 34 330 1, 60+10,8
37、11,2 0,4 34 0,70+13,2 37,4 374 1, 80+11,9 12,5 0,5 38 0,80+14,4 40,8 418 2,00+13 13 0,5 39 0,80+15,6 44,2 429 2,10+14 14 0,6 42 0,80+16,8 47,6 462 2,20+15,1 16 0,6 48 0,90+19,2 54,4 528 2,50+17,3 18 0,9 54 1, 00+21,6 61,2 594 2,90+19,4 20 1 60 1, 20+24 68 660 3,20+21,6 22 1,1 66 1, 30+26,4 74,8 726
38、3,50+23,8 NOTE In this table, typical dimensions for a range of nominal sizes are given calculated and rounded in accordance with the formulae in annex A, and based upon a nominal pitch of 3 dn. Other nominal sizes may be used, provided the dimensions and tolerances are calculated in accordance with
39、 annex A. While the nominal link pitch is based upon 3 dn, this may be varied up to a maximum of 3,2 dn, also subject to the tolerances specified in annex A. aThese tolerances are usually divided into + 2/3 and - 1/3 for both the individual link and the standard gauge length. 5.2 Material diameter a
40、nd tolerance The definition of material diameter and method of measurement shall be in accordance with ISO 1834, but to the tolerances given in annex A. The tolerances on material diameter for the selected nominal sizes shall be as given in Table 1. These and all other nominal size material diameter
41、 tolerances shall be calculated in accordance with A.1. SANS 3077:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 3077:2001(E) 4 ISO 2001 All rights reserved 5.3 Pitch and widths The dimensions and tolerances of the pitch and widths o
42、f the individual links as shown in Figure 1 shall be calculated in accordance with A.2. The tolerances of multiple pitch lengths shall be calculated in accordance with A.2 and based on a gauge length of 11 links. The dimensions and tolerances for the selected nominal sizes shall be as given in Table
43、 1. The nominal link pitch, pn, is based upon 3 dn, where dnis the nominal size of the chain. This may be varied up to a maximum of 3,2 dn. Nominal link pitch pnshall be subject to the tolerances specified in annex A. 5.4 Weld diameter The maximum diameter at the weld shall not be in excess of 8 % a
44、bove the nominal diameter in any direction. The maximum diameter at the weld for the selected nominal sizes shall be as given in Table 1. The diameter of the steel at the weld shall nowhere be less than the actual diameter of the steel adjacent to the weld. 5.5 Length dimensionally affected by weldi
45、ng The length dimensionally affected by welding shall not extend by more than 0,6 dnon either side of the centre of the link (see Figure 1). 6 Material and manufacture 6.1 Quality of material 6.1.1 Manufacturers responsibility Within the limitations given in 6.1.2 to 6.1.5, it shall be the responsib
46、ility of the chain maker to select the type of steel to be used so that the finished chain, when suitably heat-treated, complies with the mechanical properties specified in this International Standard. 6.1.2 Type of steel The steel used shall be produced by the electric process or by an oxygen-blown
47、 process. 6.1.3 Deoxidation The steel shall be fully killed and shall be made in conformity with a suitable deoxidation process in order to obtain an austenitic grain size of 5 or finer when tested in accordance with ISO 643. 6.1.4 Chemical composition The steel shall contain alloying elements in su
48、fficient quantities so that the finished chain, when heat-treated in accordance with 6.2, complies not only with the mechanical properties specified in this International Standard but also possesses a low temperature ductility and toughness adequate for providing resistance to impact loading. The st
49、eel shall contain nickel and at least one of the other elements in the minimum percentages shown in Table 2. SANS 3077:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 3077:2001(E) ISO 2001 All rights reserved 5Table 2 Chemical composition Alloying elements Element Minimum mass content as determined by cast analysis % T DAT DT Nickel 0,40 0,7 0,9 aChromium 40 Molybdenum 0,15 aHigher surface hardness, greater
