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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS ISO 1834:1999 ICS 53.0
2、20.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Short link chain for lifting purposes General conditions of acceptance Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 15:24:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI This British Standard, having been prepared u
3、nder the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 November 1999 BSI 11-1999 ISBN 0 580 35559 4 BS ISO 1834:1999 Amendments issued since publication Amd. No.DateComments National foreword This British Stand
4、ard reproduces verbatim ISO 1834:1999 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee MHE/1, Chains and fittings, which has the responsibility to: aid enquirers to understand the text; present to the responsible internationa
5、l/European committee any enquiries on the interpretation, or proposals for change, 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 secret
6、ary. Cross-references The British Standards which implement international or European 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 Elec
7、tronic Catalogue. A British Standard does not purport to include all the necessary 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 d
8、ocument comprises a front cover, an inside front cover, the ISO title page, pages ii to v, a blank page, pages 1 to 12, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Licensed Copy: sheffieldun sheffieldun, na,
9、Sun Nov 26 15:24:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI A Reference number ISO 1834:1999(E) INTERNATIONAL STANDARD ISO 1834 Second edition 1999-10-15 Short link chain for lifting purposes General conditions of acceptance Chane de levage maillons courts Conditions gnrales de rception Licensed
10、Copy: sheffieldun sheffieldun, na, Sun Nov 26 15:24:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 1834:1999(E) ii Contents 1 Scope1 2 Normative references1 3 Terms and definitions .1 4 Dimensions.3 4.1 Material diameter 3 4.2 Other link dimensions3 5 Material, heat treatment and manufacture 3 5.
11、1 Material 3 5.2 Heat treatment.3 5.3 Manufacture.3 5.4 Surface condition5 5.5 Manufacturing proof force (MPF)5 5.6 Links inserted in the course of manufacture.6 5.7 Breaking force (BF) and total ultimate elongation (A).6 5.8 Bend.6 6 Test requirements6 6.1 Condition of chain tested.6 6.2 Selection
12、of samples6 6.3 Static tensile test 7 6.4 Bend test7 6.5 Acceptance criteria.8 6.6 Re-tests8 7 Marking.9 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 15:24:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 1834:1999(E) iii 7.1 Grade marking 9 7.2 Additional marking.9 8 Manufacturers certif
13、icate.9 Annex A (normative) Requirements for chain testing machines.10 Bibliography12 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 15:24:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 1834:1999(E) iv Foreword ISO (the International Organization for Standardization) is a worldwide federa
14、tion 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 technical committee has been established has the right to be represented on that committ
15、ee. 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 electrotechnical standardization. International Standards are drafted in accordance
16、 with the rules given in the ISO/IEC Directives, Part 3. Draft International 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. International St
17、andard ISO 1834 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 second edition cancels and replaces the first edition (ISO 1834:1980), which has been technically revised. Annex A forms
18、 a normative part of this International Standard. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 15:24:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 1834:1999(E) v Introduction Chains covered by this International Standard are divided into grades which relate to the mechanical properties
19、 of the finished product and not simply to the strength of the material. Each grade is identified by a letter for fine tolerance chain or number for medium tolerance chain in the series: M(4), P(5), S(6), T(8), V(10). The letter or number indicates the mean stress at the minimum breaking force as sh
20、own in Table 1. Table 1 Basis of grade symbols Grade Mean stress at the specified minimum breaking force Fine tolerance Medium tolerance N/mm2 M 4 400 P 5 500 S 6 630 T 8 800 V 10 1 000 NOTE Chains of these grades may all not be the subjects of International Standards. The stresses in a chain link a
21、re not uniform and at the extrados, particularly at the crown, the maximum fibre stress is considerably greater than the mean stress obtained by dividing the force by the total cross-sectional area of both legs of the link. Attention is drawn to the fact that repairs to chain should be carried out i
22、n accordance with ISO 3056, in the case of medium tolerance chain, and ISO 7592, in the case of fine tolerance chain. This grading system has also been applied to hooks, links, shackles and other accessories, indicating their strength compatibility with the appropriate grade of chain. Licensed Copy:
23、 sheffieldun sheffieldun, na, Sun Nov 26 15:24:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 15:24:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTERNATIONAL STANDARD ISO 1834:1999(E) 1 Short link chain for lifting purposes General conditions o
24、f acceptance 1 Scope This International Standard specifies the general conditions of acceptance for electrically welded round steel short link chain for lifting purposes. It includes medium tolerance chain for use in chain slings and for general lifting purposes, and fine tolerance chain for use wit
25、h chain hoists and other similar lifting appliances. It is applicable to short link lifting chain in accordance with ISO 1835, ISO 3075, ISO 3076 and ISO 3077. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this Inter
26、national Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards listed below. Me
27、mbers of IEC and ISO maintain registers of currently valid International Standards. ISO 1835:1), Short link chain for lifting purposes Grade M(4), non-calibrated, for chain slings, etc. ISO 3075:2), Short link chain for lifting purposes Grade S(6), non-calibrated, for chain slings, etc. ISO 3076:3),
28、 Short link chain for lifting purposes Grade T(8), non-calibrated, for chain slings, etc. ISO 3077:4), Short link chain for lifting purposes Grade T(8), calibrated, for chain hoists and other lifting appliances. ISO 7500-1:1999, Metallic materials Verification of static uniaxial testing machines Par
29、t 1: Tension/compression testing machines Verification and calibration of the force-measuring system. 3 Terms and definitions For the purposes of this International Standard, the following terms and definitions apply. 3.1 nominal size dn nominal diameter of the round section steel wire or bar from w
30、hich the chain is made 1) To be published. (Revision of ISO 1835:1980) 2) To be published. (Revision of ISO 3075:1980) 3) To be published. (Revision of ISO 3076:1984) 4) To be published. (Revision of ISO 3077:1984) Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 15:24:40 GMT+00:00 2006, Uncon
31、trolled Copy, (c) BSI ISO 1834:1999(E) 2 3.2 material diameter dm diameter of the material in the chain link as measured 3.3 weld diameter dw measured diameter of the material at the weld (type 1 welded chain) or weld dimension perpendicular to the plane of the link (type 2 welded chain) 3.4 length
32、dimensionally affected by welding e length on either side of the centre of the link, affected by welding 3.5 pitch p internal length of a link as measured 3.6 manufacturing proof force MPF force to which during manufacture the whole of the chain is subjected 3.7 breaking force BF maximum force which
33、 the chain withstands during the course of a static tensile test to destruction 3.8 working load limit WLL maximum mass which the chain hanging vertically is authorized to sustain in general lifting service 3.9 total ultimate elongation A total extension at the point of fracture of the chain express
34、ed as a percentage of the internal length of the test sample 3.10 processing any treatment of the chain subsequent to welding EXAMPLES heat treatment, polishing or dimensional calibration. 3.11 lot specified quantity from which test sample(s) is/are selected 3.12 competent person designated person,
35、suitably trained qualified by knowledge and practical experience, and with the necessary instructions to enable the required tests and examination to be carried out NOTE ISO 9002:1994, 4.18 gives guidance on training. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 15:24:40 GMT+00:00 2006, Un
36、controlled Copy, (c) BSI ISO 1834:1999(E) 3 4 Dimensions 4.1 Material diameter The material diameter of any section of a finished link shall be equal to the nominal size, within the tolerances stated in the International Standard for the particular chain. It shall be taken as the mean of two measure
37、ments of the section at right angles in the same plane. The measurements shall be made away from the weld and on the straight side of the link to avoid the effect of measuring any flattening of the section, due to contact with the forming mandrel. 4.2 Other link dimensions The length and the width o
38、f a chain link, and the pitch and length of a number of links of fine tolerance chain, shall be as specified in the International Standard for that particular chain. 5 Material, heat treatment and manufacture 5.1 Material The material shall conform to the requirements of the International Standard f
39、or the particular chain. Within these limitations, the manufacturer shall select a steel such that the finished chain, complies with the mechanical properties specified in the International Standard for the particular chain. 5.2 Heat treatment All chain shall be subjected to the heat treatment speci
40、fied in the International Standard for the particular chains before the application of the manufacturing proof force. 5.3 Manufacture 5.3.1 Workmanship The weld, which may be of the smooth or asymmetric type shall be positioned in the centre of the link as shown in Figure 1. The material affected di
41、mensionally by welding shall not extend on either side of the centre of the leg more than the amount specified in the International Standard for the particular chain. The weld metal shall nowhere be displaced so that it undercuts the contours of the link (see Figure 2). Licensed Copy: sheffieldun sh
42、effieldun, na, Sun Nov 26 15:24:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 1834:1999(E) 4 l = multiple pitch length e = length affected by welding, on either side of p = pitch (internal link length) the centre link dm= measured diameter of the material, except at the weld W1= internal link wi
43、dth away from the weld dw= measured diameter of the material at the weld (type 1) W2= external link width away from the weld or weld dimension perpendicular to the plane W3= external link width over the weld of the link (type 2) W4= internal link width at the weld G = dimension in other planes as pe
44、r individual chain specification (type 2) Figure 1 Types of weld finish and link dimensions Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 15:24:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 1834:1999(E) 5 Figure 2 Undercut at weld (not permissible) 5.3.2 Finish 5.3.2.1 Smooth welded cha
45、in The fins caused by welding shall be removed. 5.3.2.2 Asymmetric welded chain The fins caused by welding shall be removed from the outside of the link surface leaving the projection on the inside. 5.4 Surface condition The “finished“ condition (see 6.1) for chain shall include the surface coating,
46、 if any. 5.5 Manufacturing proof force (MPF) After heat treatment and complete processing, the finished chain shall be subjected to the manufacturing proof force specified in the International Standard for that particular chain. The testing machine shall conform to the requirements given in annex A.
47、 The chain shall be placed in the testing machine without twisting. After the force is withdrawn, the chain shall be carefully examined by the competent person and any faulty links replaced (see 5.6). The chain shall articulate freely when manipulated by the examiner. Where surface finishing process
48、es are used which involve the risk of chain embrittlement, e.g. acid cleaning or electroplating, the manufacturing proof force shall be re-applied in the finished condition. Adequate facilities shall be provided, with suitable lighting, for the purpose of examining the chains after they have been su
49、bjected to the proof force. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 15:24:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 1834:1999(E) 6 5.6 Links inserted in the course of manufacture Any links which have been inserted shall be processed to ensure that every link in the finished chain is in the same condition. If links have been inserted after the application of the manufacturing proof force (see 5.5), that portion of the chain affected by such processing shall then be again subjected to the manufacturing proof force and re
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