1、BRITISH STANDARDBS EN 818-3:1999 +A1:2008Short link chain for lifting purposes Safety Part 3: Medium tolerance chain for chain slings Grade 4ICS 53.020.30g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55
2、g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 818-3:1999+A1:2008This British Standard was published under the authority of the Standards Committee and comes into effect on 15 September 1999 BSI 2008ISBN 978 0 580 64079 7National forewordThis British Standard is the UK implementation of
3、 EN 818-3:1999+A1:2008. It supersedes BS EN 818-3:1999 which is withdrawn.The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text altered by CEN amendment A1 is indi
4、cated by !“. The UK participation in its preparation was entrusted to Technical Committee MHE/1, Chains and fittings.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contra
5、ct. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments/corrigenda issued since publicationDate Comments30 September 2008 Implementation of CEN amendment A1:2008EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM
6、 EN 818-3:1999+A1 April 2008 ICS 53.020.30 Supersedes EN 818-3:1999 English Version Short link chain for lifting purposes - Safety - Part 3: Medium tolerance chain for chain slings - Grade 4 Chanes de levage maillons courts - Scurit - Partie 3: Chanes de tolrance moyenne pour lingues en chanes -Clas
7、se 4 Kurzgliedrige Rundstahlketten fr Hebezwecke - Sicherheit - Teil 3: Mitteltolerierte Rundstahlketten fr Anschlagketten - Gteklasse 4 This European Standard was approved by CEN on 16 April 1999 and includes Amendment 1 approved by CEN on 10 February 2008. CEN members are bound to comply with the
8、CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre o
9、r to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official ve
10、rsions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
11、 Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN nati
12、onal Members. Ref. No. EN 818-3:1999+A1:2008: EEN 818-3:1999+A1:2008 (E) 2 Contents Page Foreword4 Introduction .5 1 Scope 5 2 Normative references 5 3 Terms and definitions .6 4 Hazards .6 5 Safety requirements 7 5.1 General7 5.2 Dimensions.7 5.2.1 Nominal size of chain, dn7 5.2.2 Tolerance on mate
13、rial diameter (except at the weld).7 5.2.3 Weld diameter 7 5.2.4 Length dimensionally affected by welding .7 5.2.5 Pitch and widths 7 5.3 Materials and heat treatment9 5.3.1 !General 9 5.3.2 Quality of material9 5.3.3 Heat treatment10 5.3.4 !Stainless steel.10 5.4 Mechanical properties.10 5.4.1 Manu
14、facturing proof force (MPF).10 5.4.2 Breaking force (BF) and total ultimate elongation (A) .10 5.4.3 Bend deflection10 6 Verification of safety requirements11 6.1 Qualification of personnel 11 6.2 Size of lot and selection of samples12 6.3 Manufacturing proof force, breaking force and total ultimate
15、 elongation.12 6.3.1 Static tensile test .12 6.3.2 Manufacturing proof force acceptance criteria 12 6.3.3 Breaking force and total ultimate elongation acceptance criteria12 6.4 Bend deflection12 6.4.1 Bend test.12 6.4.2 Bend deflection acceptance criteria 13 7 Marking .13 8 Manufacturers certificate
16、 .13 9 !Information“ for use .13 Annex A (informative) Calculation of dimensions, working load limits and mechanical properties .14 A.1 Dimensions and tolerances 14 A.2 Working load limits and mechanical properties.14 Annex B (informative) Mass of chain 17 Annex C (informative) Designation system fo
17、r chain (medium tolerance) - Grade 4.18 BS EN 818-3:1999+A1:2008EN 818-3:1999+A1:2008 (E) 3 Annex ZA (informative) !Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC19 Annex ZB (informative) !Relationship between this European Standard and the Essent
18、ial Requirements of EU Directive 2006/42/EC20 !Bibliography 21 BS EN 818-3:1999+A1:2008EN 818-3:1999+A1:2008 (E) 4 Foreword This document (EN 818-3:1999+A1:2008) has been prepared by Technical Committee CEN/TC 168 “Chains, ropes, webbing, slings and accessories - Safety”, the secretariat of which is
19、 held by BSI. 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 October 2008 and conflicting national standards shall be withdrawn at the latest by October 2008. This document includes Amendment 1,
20、approved by CEN on 2008-02-10. This document supersedes EN 818-3:1999. The start and finish of text introduced or altered by amendment is indicated in the text by tags ! “. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association
21、, and supports essential requirements of EU Directive(s). !For relationship with EU Directive(s), see informative Annexes ZA and ZB, which are integral parts of this document.“ The other Parts of EN 818 are: Part 1 : General conditions of acceptance Part 2 : Medium tolerance chain for chain slings -
22、 Grade 8 Part 4 : Chain slings - Grade 8 Part 5 : Chain slings - Grade 4 Part 6 : Chain slings - Specification for information for use and maintenance to be provided by the manufacturer Part 7 : Fine tolerance chains for hoists, Grade T (types T, DAT, DT). According to the CEN/CENELEC Internal Regul
23、ations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Nethe
24、rlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. BS EN 818-3:1999+A1:2008EN 818-3:1999+A1:2008 (E) 5 Introduction This European Standard has been prepared to be a harmonized standard to provide one means of conforming with the essential sa
25、fety requirements of the Machinery Directive and associated EFTA regulations. The Directive stipulates that where chain with welded links is used for lifting accessories it is to be of short link type and for the purposes of this standard this is chain having a ratio of nominal pitch to nominal size
26、 of 3:1. The extent to which hazards are covered is indicated in the scope. In addition, lifting equipment shall conform as appropriate to !EN ISO 12100“ for hazards which are not covered by this standard. !This standard is a Type C standard as stated in EN ISO 12100. When provisions of this type C
27、standard are different from those which are stated in type A or B standards, the provisions of this type C standard take precedence over the provisions of the other standards, for equipment that have been designed and built according to the provisions of this type C standard.“ 1 Scope !This part of
28、EN 818 specifies the requirements related to safety for short link chains, grade 4, of medium tolerance for use in chain slings to EN 818-4:1996+A1 and for general lifting purposes.“ The standard is applicable to electrically welded round steel short link chains, conforming to !EN 818-1:1996+A1“, wh
29、ich are intended for lifting objects, materials or goods. The range of nominal sizes of chain covered by this Part of EN 818 is from 7 mm to 45 mm. The hazards covered by this Part of EN 818 are identified in clause 4. Annex A contains the bases for calculation of tabulated values for dimensions, wo
30、rking load limits and mechanical properties. Annex B gives information on the mass/metre of chain. Annex C gives an example of a designation system for chains of grade 4. Annex ZA gives the relationship with EU Directives. 2 Normative references This European Standard incorporates by dated or undate
31、d reference provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of, any of these publications apply to this European Standard only when in
32、corporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies. !deleted text“ !EN 818-1:1996+A1:2008“, Short link chain for lifting purposes - Safety Part 1: General conditions of acceptance BS EN 818-3:1999+A1:2008EN 818-3:1999+A1:2008
33、(E) 6 !EN 818-6:2000+A1“, Short link chain for lifting purposes - Safety Part 6: Chain slings - Specification for information for use and maintenance to be provided by the manufacturer EN 1050:1996, Safety of machinery Principles for risk assessment !EN 10025 (all parts), Hot rolled products of stru
34、ctural steels“ !EN 10088-3, Stainless steels Part 3: Technical delivery conditions for semi-finished products, bars, rods, wire, sections and bright products of corrosion resisting steels for general purposes EN ISO 12100-1, Safety of machinery - Basic concepts, general principles for design - Part
35、1: Basic terminology, methodology (ISO 12100-1:2003) EN ISO 12100-2, Safety of machinery - Basic concepts, general principles for design - Part 2: Technical principles (ISO 12100-2:2003)“ ISO 643, Steels - Micrographic determination of the ferritic or austenitic grain size 3 Terms and definitions !F
36、or the purposes of this document, the terms, definitions and symbols given in EN 818-1:1996+A1 and the following apply.“ 4 Hazards !Accidental release of a load, or release of a load due to“ failure of lifting accessories such as chain slings or their component parts puts at risk either directly or
37、indirectly the safety or health of those persons within the danger zone of lifting equipment. In order to provide the necessary strength and durability of lifting accessories this Part of EN 818 lays down requirements for the design, manufacture and testing to ensure that specified levels of perform
38、ance are met. Fatigue failure has not been identified as being a hazard when chain, having the specified levels of performance given in this Part of EN 818, is used in general lifting service. Since failure can be caused by the incorrect choice of grade and specification of lifting accessories this
39、Part of EN 818 also gives the requirements for marking and the manufacturers certificate. Those aspects of safe use associated with good practice are given in !EN 818-6:2000+A1“. Table 1 contains those hazards, which require action to reduce risk identified by risk assessment as being specific and s
40、ignificant for short link chain (medium tolerance) grade 4. BS EN 818-3:1999+A1:2008EN 818-3:1999+A1:2008 (E) 7 Table 1 Hazards and associated requirements Hazards identified in annex A of EN 1050: 1996 Relevant clause/subclause of this Part of EN 818 1 e) Mechanical hazard 5due to inadequacy 5of st
41、rength 5678!deleted text“ 95 Safety requirements 5.1 General The chain shall also conform to the appropriate requirements of !EN 818-1:1996+A1:2008“. 5.2 Dimensions 5.2.1 Nominal size of chain, dnThe nominal size of chain shall be one of the sizes listed in table 2, column 1. 5.2.2 Tolerance on mate
42、rial diameter (except at the weld) The tolerance on material diameter for each nominal size of chain shall be in accordance with table 2, column 2. 5.2.3 Weld diameter The maximum diameter at the weld for each nominal size of chain shall be in accordance with table 2, column 3. The thickness of the
43、steel at the weld shall nowhere be less than the actual diameter of the steel adjacent to the weld. 5.2.4 Length dimensionally affected by welding The length dimensionally affected by welding e (see figure 1 of !EN 818-1:1996+A1:2008“) shall not extend by more than 0,6 dnto either side of the centre
44、 of the link. 5.2.5 Pitch and widths The dimensions of the pitch and widths of the individual links and chain shall be as specified in table 2, columns 4 to 8, and illustrated in figure 1 of !EN 818-1:1996+A1:2008“. BS EN 818-3:1999+A1:2008EN 818-3:1999+A1:2008 (E) 8 Table 2 Dimensions Dimensions in
45、 millimetres (1) (2) (3) (4) (5) (6) (7) (8) Nominal size Material diameter tolerance Weld diameter Pitch Internal width away from the weld External width over the weld dndspnpmaxpminw1w2max. min. max. 7 0,28 7,7 21 21,6 20,4 9,1 25,9 8 0,32 8,8 24 24,7 23,3 10,4 29,6 10 0,4 11 30 30,9 29,1 13 37 13
46、 0,52 14,3 39 40,2 37,8 16,9 48,1 16 0,64 17,6 48 49,4 46,6 20,8 59,2 18 0,9 19,8 54 55,6 52,4 23,4 66,6 19 1 20,9 57 58,7 55,3 24,7 70,3 20 1 22 60 61,8 58,2 26 74 22 1,1 24,2 66 68 64 28,6 81,4 23 1,2 25,3 69 71,1 66,9 29,9 85,1 25 1,3 27,5 75 77,3 72,8 32,5 92,5 26 1,3 28,6 78 80,3 75,7 33,8 96,2
47、 28 1,4 30,8 84 86,5 81,5 36,4 104 32 1,6 35,2 96 98,9 93,1 41,6 118 36 1,8 39,6 108 111 105 46,8 133 40 2 44 120 124 116 52 148 45 2,3 49,5 135 139 131 58,5 167 BS EN 818-3:1999+A1:2008EN 818-3:1999+A1:2008 (E) 9 5.3 Materials and heat treatment 5.3.1 !General The steel shall either a) meet the req
48、uirements of 5.3.2 and be heat treated in accordance with 5.3.3 or b) meet the requirements of 5.3.4.“ 5.3.2 Quality of material 5.3.2.1 General Within the limitations given in !5.3.2.2 to 5.3.2.4“ the chain manufacturer shall select the type of steel to be used so that the finished chain, when suit
49、ably heat-treated meets the mechanical properties specified in this Part of EN 818. 5.3.2.2 Type of steel The steel used shall be produced by an electric process or by an oxygen blown process. 5.3.2.3 Deoxidation The steel shall be fully killed as defined in !EN 10025“, be stabilized against strain age embrittlement and have an austenitic grain size of 5 or finer when tested in accordance with ISO 643. 5.3.2.4 Chemical composition To ensure that chain is stabilized against strain age embrittlement during service the s
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