1、BRITISH STANDARD BS EN 1677-6:2001 +A1:2008 Components for slings Safety Part 6: Links Grade 4 ICS 53.020.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSEN1677-6:2001+A1:2008 This British Standard was published under the authority of the Standards Committee and comes into
2、 effect on 15 June 2001 National foreword This British Standard is the UK implementation of EN 1677-6:2001+A1:2008. It supersedes BS EN 1677-6:2001 which is withdrawn.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 tex
3、t carry the number of the CEN amendment. For example, text altered by CEN amendment A1 is indicated 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 se
4、cretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. ISBN Amendments/corrigenda issued since publication Date Comments Imp
5、lementation of CEN amendment A1:2008 BSI 2009 0 April 2009 978 0 580 64318 7 3 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1677-6:2001+A1 November 2008 ICS 53.020.30 Supersedes EN 1677-6:2001 English Version Components for slings - Safety - Part 6: Links - Grade 4 Accessoires pour lingues -
6、 Scurit - Partie 6: Mailles - Classe 4 Einzelteile fr Anschlagmittel - Sicherheit - Teil 6: Einzelglieder - Gteklasse 4 This European Standard was approved by CEN on 18 February 2001 and includes Amendment 1 approved by CEN on 9 September 2008.CEN members are bound to comply with the CEN/CENELEC Int
7、ernal 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 or to any CEN me
8、mber. 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 versions. CEN mem
9、bers 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, Spain, Sweden,
10、 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 national Members. R
11、ef. No. EN 1677-6:2001+A1:2008: EEN 1677-6:2001+A1:2008 (E) 2 Contents Page Foreword3 Introduction .4 1 Scope 4 2 Normative references 4 3 Terms and definitions .5 4 Hazards .6 Table 1 Hazards and associated requirements.7 5 Safety requirements 7 5.1 Design .7 5.2 Dimensions.7 5.3 Materials and heat
12、 treatment7 Table 2 Sulfur and phosphorous content8 Table 3 Silicon content 8 5.4 Manufacturing methods and workmanship 9 5.5 Mechanical properties.9 Table 4 Selected working load limits .10 6 Verification of safety requirements11 6.1 Qualification of personnel 11 6.2 Type tests .11 Figure 1 Test pi
13、ece.12 Figure 2 Bend test equipment.12 6.3 Manufacturing proof test 13 6.4 Manufacturing test regime13 Table 5 Number of links in a lot 13 7 Marking .14 8 Manufacturers certificate .14 9 Instructions for use .15 Annex ZA (informative) ! ! ! !Relationship between this European Standard and the Essent
14、ial Requirements of EU Directive 98/37/EC“ “ “ “.16 Annex ZB (informative) ! ! ! !Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC“ “ “ “.17 Bibliography 18 EN 1677-6:2001+A1:2008 (E) 3 Foreword This document (EN 1677-6:2001+A1:2008) has been prep
15、ared by Technical Committee CEN/TC 168 “Chains, ropes, webbing, slings and accessories - Safety”, the secretariat of which is 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 May 2009,
16、 and conflicting national standards shall be withdrawn at the latest by December 2009. This document supersedes EN 1677-6:2001. This document includes Amendment 1, approved by CEN on 2008-09-09. The start and finish of text introduced or altered by amendment is indicated in the text by tags !“. This
17、 European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, 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 do
18、cument.“ The other Parts of EN 1677 for components for slings are: Part 1: Forged steel components - Grade 8 Part 2: Forged steel lifting hooks with latch - Grade 8 Part 3: Forged steel self-locking hooks - Grade 8 Part 4: Links - Grade 8 Part 5: Forged steel lifting hooks with latch - Grade 4 Accor
19、ding to the CEN/CENELEC Internal Regulations, 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, Latvi
20、a, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 1677-6:2001+A1:2008 (E) 4 Introduction This European Standard has been prepared to be a harmonized standard providing one means of complying with the
21、 essential safety requirements of the Machinery Directive and associated EFTA regulations. The links covered by this Part of EN 1677 are normally supplied to be part of a sling, but they may also be used for other applications. In such instances it is important that the link design is checked to ens
22、ure its fitness for the intended use. The extent to which hazards are covered is indicated in the scope. In addition, lifting equipment shall conform as appropriate to EN 292 for hazards that are not covered by this standard. 1 Scope This part of EN 1677 specifies requirements for welded steel maste
23、r links, intermediate master links, master link assemblies and lower terminal links of grade 4 up to 67 t WLL, mainly for use in: chain slings according to EN 818-5 steel wire rope slings according to prEN 13414-1:1998 textile slings according to EN 1492-1, EN 1492-2. intended for lifting objects, m
24、aterials or goods. The hazards covered by this Part of EN 1677 are identified in clause 4. 2 Normative references This European Standard incorporates, by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the
25、 publications are listed hereafter. For dated references, subsequent amendments to, or revisions of, any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (incl
26、uding amendments). EN 292-1, Safety of machinery - Basic concepts - General principles for design - Part 1: Basic terminology, methodology EN 292-2:1991/A1:1995, Safety of machinery - Basic concepts - General principles for design - Part 2: Technical principles and specifications (Amendment 1: 1995)
27、 EN 818-5:1999, Short link chain for lifting purposes Safety - Part 5: Chain slings - Grade 4 EN 818-6, 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 - P
28、rinciples for risk assessment EN 1492-1, Textile slings Safety - Part 1: Flat woven webbing slings made of man-made fibres. EN 1677-6:2001+A1:2008 (E) 5 EN 1492-2, Textile slings Safety - Part 2: Round slings made of man-made fibres EN 10002-2:1991, Metallic materials - Tensile test - Part 2: Verifi
29、cation of the force measuring system of the tensile testing machine EN 10025:1990+A1:1993, Hot rolled products of non-alloy structural steels Technical delivery conditions prEN 13414-1:1998, Steel wire ropes for slings Safety - Part 1: Wire rope slings EN 45012, General requirements for bodies opera
30、ting assessment and certification/registration of quality systems (ISO/IEC Guide 62:1996) EN ISO 9002:1994, Quality systems - Model for quality assurance in production, installation and servicing ISO 643:1983, Steels - Micrographic determination of the ferritic or austenitic grain size 3 Terms and d
31、efinitions For the purposes of this Part of EN 1677, the following terms and definitions apply. 3.1 working load limit (WLL) maximum mass that a link is authorized to sustain in general lifting service NOTE This term has the same meaning as the term maximum working load used in the amendment to EN 2
32、92-2:1991/A1:1995. 3.2 manufacturing proof force (MPF) force applied to the link during the manufacturing proof test 3.3 breaking force (BF) maximum force reached during the static tensile test of the link at which the link fails to retain the load 3.4 sling assembly consisting of chain, wire rope o
33、r textile joined to upper and lower terminals suitable for attaching loads to the hook of a crane or other lifting machine 3.5 master link link forming the upper terminal of a sling by means of which the sling is attached to the hook of a crane or other lifting machine 3.6 intermediate master link l
34、ink used to connect one or two legs of a sling to a master link 3.7 master link assembly assembly consisting of a master link together with two intermediate master links 3.8 lower terminal link, hook or other device fitted at the end of a leg of a sling, remote from the master link or upper terminal
35、 EN 1677-6:2001+A1:2008 (E) 6 3.9 traceability code series of letters and/or numbers marked on a link that enable its manufacturing history, including the identity of the cast of steel used, to be traced 3.10 lot specified number of links from which samples are selected for testing purposes, and tha
36、t have been manufactured from the same cast of steel and subjected to the same heat treatment process 3.11 total ultimate elongation total extension at the point of fracture of the link expressed as a percentage of the internal length of the test sample 3.12 competent person designated person, suita
37、bly trained, qualified by knowledge and practical experience, and with the necessary instruction to enable the required test and examination to be carried out NOTE 4.18 of EN ISO 9002:1994 gives guidance on training 4 Hazards Accidental release of a load, or release of a load due to failure of a lin
38、k puts at risk, either directly or indirectly, the safety or health of those persons within the danger zone. In order to provide the necessary strength and durability of links, this Part of EN 1677 gives requirements for the design, manufacture and testing to ensure that specified levels of performa
39、nce are met. Fatigue failure has not been identified as a hazard when grade 4 links having the specified levels of performance given in this standard are used for general lifting purposes. Since failure can be caused by the incorrect choice of grade and specification of link, this standard also give
40、s requirements for marking and the manufacturers certificate. Errors in fitting can also lead to failure and this Part of EN 1677 contains dimensional requirements to allow correct fit. Risk of injury due to sharp edges, sharp angles or rough surfaces when handling is also covered by this standard.
41、Those aspects of safe use associated with good practice are given in EN 818-6. Table 1 contains those hazards that require action to reduce risk identified by risk assessment as being specific and significant for links of grade 4. EN 1677-6:2001+A1:2008 (E) 7 Table 1 Hazards and associated requireme
42、nts Hazards identified in annex A of EN 1050: 1996 Relevant clause of annex A of EN 292-2: 1991/A1: 1995 Relevant clause/subclause of this Part of EN1677 1e Mechanical hazard 1.3.2 5 due to inadequacy 4.1.2.3 5 of strength 4.1.2.5 5 4.2.4 5 1.7.3 7 1.7.4 9 1.3 Cutting hazard 1.3.4 5.4 1.8 Friction o
43、r abrasion hazard 1.3.4 5.4 15 Errors of fitting hazard 1.5.4 5.2 9 5 Safety requirements 5.1 Design Links shall be parallel-sided links produced by welding. 5.2 Dimensions The internal dimensions of links covered by this Part of EN 1677 shall be such as to ensure effective articulation so that the
44、load is transmitted axially. The cross-section of links shall be so as to conform to 5.5. NOTE This requirement permits a varying shape and area of cross-section. The internal length of master links shall be WLL 58 minimum (in millimetres) and the internal width WLL 5 , 31 minimum (in millimetres) w
45、here the WLL is given in tonnes. 5.3 Materials and heat treatment 5.3.1 Quality of material 5.3.1.1 General Within the limitations given in 5.3.1.2 to 5.3.1.4, the manufacturer shall select the type of steel to be used so that the finished links, when suitably heat-treated conform to the mechanical
46、properties specified in this Part of EN 1677. 5.3.1.2 Type of steel The steel shall be produced by an electric process or by an oxygen blown process. EN 1677-6:2001+A1:2008 (E) 8 5.3.1.3 Deoxidation The steel shall be fully killed as defined in EN 10025:1990+A1:1993, stabilized against strain age em
47、brittlement, and have an austenitic grain size of 5 or finer when tested in accordance with ISO 643 : 1983 5.3.1.4 Chemical composition To ensure that links are stabilized against strain age embrittlement during service, the steel shall contain at least 0,025 % aluminium. The steel shall contain no
48、more sulfur and phosphorus than the limits given in Table 2. Table 2 Sulfur and phosphorous content Element Maximum mass content as determined by Cast analysis Check analysis % % Sulfur 0,025 0,030 Phosphorous 0,025 0,030 The silicon content of the steel shall be as specified in Table 3. NOTE The pu
49、rpose of this requirement is to limit the detrimental effect on the hook as part of a chain sling when used for lifting in galvanizing baths. Table 3 Silicon content Element Mass content as determined by Cast analysis Check analysis % % Silicon 0,12 to 0,30 0,15 to 0,35 5.3.2 Heat treatment Each link shall either be hardened from a temperature above the AC 3point and tempered, or normalized from a temperature above the AC 3point, before being subjected to the manufacturing proof force. The tempering temperature shall be a minim
