1、BSI Standards PublicationBS ISO 16872:2015Round steel short link chainsfor lifting purposes Finetolerance hoist chains for handoperated chain hoists GradeVHBS ISO 16872:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 16872:2015. Itsupersedes BS ISO 16872:2
2、008 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee MHE/1, Chains and fittings.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a
3、 contract. Users are responsible for its correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 80088 7ICS 53.020.30Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the
4、authority of theStandards Policy and Strategy Committee on 31 January 2015.Amendments issued since publicationDate Text affectedBS ISO 16872:2015 ISO 2015Round steel short link chains for lifting purposes Fine tolerance hoist chains for hand operated chain hoists Grade VHChanes de levage en acier de
5、 section ronde maillons courts Chanes de palans de tolrances fine pour palans la main Classe de qualit VHINTERNATIONAL STANDARDISO16872Second edition2015-01-15Reference numberISO 16872:2015(E)BS ISO 16872:2015ISO 16872:2015(E)ii ISO 2015 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2015All ri
6、ghts reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from
7、either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 16872:2015ISO 16872:2015(E)Contents PageForeword v1
8、 Scope . 12 Normative references 13 Terms and definitions . 14 General conditions of acceptance . 25 Dimensions . 25.1 Nominal size, dn25.2 Diameter tolerance 45.3 Pitch 45.4 Width . 45.5 Standard gauge length 45.6 Weld diameter . 45.7 Length dimensionally affected by welding . 56 Material and manuf
9、acture 56.1 Quality of material . 56.1.1 General 56.1.2 Type of steel . 56.1.3 Deoxidation 56.1.4 Weldability 56.1.5 Chemical composition . 56.1.6 Finished condition 56.2 Heat treatment 66.3 Working load limits (WLL) . 66.4 Mechanical properties 66.4.1 Manufacturing proof force (MPF) . 66.4.2 Breaki
10、ng force (BF) . 76.4.3 Total ultimate elongation, A 76.4.4 Bend deflection, f 76.4.5 Surface hardness 76.4.6 Toughness 77 Verification of safety requirements .117.1 Size of lot and selection of samples 117.2 Manufacturing proof force (MPF) Acceptance criteria 117.3 Breaking force (BF) and total ulti
11、mate elongation Acceptance criteria 117.4 Bend deflection 117.4.1 Bend test 117.4.2 Bend deflection Acceptance criteria .127.5 Hardness test Acceptance criteria . 127.6 Toughness of chain test material 137.6.1 Toughness test 137.6.2 Toughness test Acceptance criteria .138 Marking .138.1 Grade markin
12、g 138.2 Manufacturers marking 139 Manufacturers certificate .1310 Information for assembly into the chain hoist and for use .1310.1 General 1310.2 Assembly of hoist chain into the chain hoist 1310.3 Hoist chain use . 1410.4 Inspection . 14 ISO 2015 All rights reserved iiiBS ISO 16872:2015ISO 16872:2
13、015(E)Annex A (normative) Bases for calculation 15Bibliography .18iv ISO 2015 All rights reservedBS ISO 16872:2015ISO 16872:2015(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Intern
14、ational 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 committee. International organizations, governmental and non-governmental, in liaison with
15、 ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives,
16、Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of th
17、e elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations r
18、eceived (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs
19、adherence to the WTO principles in the Technical Barriers to Trade (TBT), see the following URL: Foreword Supplementary information .The committee responsible for this document is ISO/TC 111, Round steel link chains, chain slings, components and accessories, Subcommittee SC 1, Chains and chain sling
20、s.This second edition cancels and replaces the first edition (ISO 16872:2008). Subclause 6.4.5 “Toughness” has been technically revised. ISO 2015 All rights reserved vBS ISO 16872:2015BS ISO 16872:2015Round steel short link chains for lifting purposes Fine tolerance hoist chains for hand operated ch
21、ain hoists Grade VH1 ScopeThis International Standard specifies the requirements for fine-tolerance hoist chains of grade VH for use as load chains in hand operated chain hoists for lifting purposes. They are round steel short link chains, electrically welded, heat treated, and tested; they comply w
22、ith the general conditions of acceptance of ISO 1834.NOTE 1 The letter “V” expresses the grade in accordance with ISO 1834.NOTE 2 The letter “H” expresses that these hoist chains are for hand operated hoists only.NOTE 3 Resistance butt welding and flash welding are listed in ISO 4063.The range of no
23、minal sizes covered by this International Standard is from 3 mm to 13 mm. Fine-tolerance hoist chains, according to this International Standard, are for use in the temperature range 10 C to 150 C.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this d
24、ocument and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 148-1, Metallic materials Charpy pendulum impact test Part 1: Test methodISO 497, Guid
25、e to the choice of series of preferred numbers and of series containing more rounded values of preferred numbersISO 643, Steels Micrographic determination of the apparent grain sizeISO 1834, Short link chain for lifting purposes General conditions of acceptanceISO 6507-1, Metallic materials Vickers
26、hardness test Part 1: Test methodISO 7500-1, Metallic materials Verification of static uniaxial testing machines Part 1: Tension/compression testing machines Verification and calibration of the force-measuring systemISO 14556, Steel Charpy V-notch pendulum impact test Instrumented test method3 Terms
27、 and definitionsFor the purposes of this document, the terms and definitions given in ISO 1834 and the following apply.3.1standard gauge lengthmultiple pitch length based on 11 chain linksINTERNATIONAL STANDARD ISO 16872:2015(E) ISO 2015 All rights reserved 1BS ISO 16872:2015ISO 16872:2015(E)4 Gener
28、al conditions of acceptanceThe hoist chains shall comply with the requirements of ISO 1834, as well as those of this International Standard.5 Dimensions5.1 Nominal size, dnA selection of nominal sizes, dn, of hoist chains is presented in Table 1, column 1. Other nominal sizes may be used, provided t
29、hat the dimensions and tolerances are calculated in accordance with Annex A.Table 1 Typical dimensions (see Figure 1)Dimensions in millimetres1 2 3 4 5 6 7 8 9 10 11Nominal sizeDiameter tolerancePitch Width Standard gauge lengthWeld diameterInternal External Internal Nominal Tolerance Type 2 Types 1
30、 and 2Type 1 Nominal Tolerance Types 1 and 2Type 2dnpnw1w3w4lndwGmin. max. min. max. max.3 0,2 9,0 0,2 3,8 10,7 3,6 99 0,5 3,3 3,84 0,2 12,0 0,3 5,0 14,3 4,8 132 0,6 4,3 5,05 0,2 15,0 0,3 6,3 17,9 6,0 165 0,8 5,4 6,36,3 0,3 18,9 0,4 7,9 22,6 7,6 208 1,0 6,8 7,97,1 0,3 21,3 0,4 8,9 25,4 8,5 234 1,1 7
31、,7 8,98 0,3 24,0 0,5 10,0 28,6 9,6 264 1,3 8,6 10,09 0,4 27,0 0,5 11,3 32,2 10,8 297 1,4 9,8 11,310 0,4 30,0 0,6 12,5 35,8 12,0 330 1,6 10,8 12,511,2 0,4 33,6 0,7 14,0 40,1 13,4 370 1,8 12,1 14,012,5 0,5 37,5 0,7 15,6 44,8 15,0 413 2,0 13,5 15,613 0,5 39,0 0,8 16,3 46,6 15,6 429 2,1 14,1 16,3NOTE Ty
32、pical dimensions for the selected nominal sizes are given, calculated, and rounded in this table, in accordance with the formulae specified in Annex A, based upon a nominal pitch of 3dn.2 ISO 2015 All rights reservedBS ISO 16872:2015ISO 16872:2015(E)la) Multiple pitch lengthpw4w3eedwdmb) Dimensions
33、of chain link Type 1Gd ww1dmeew3pc) Dimensions of chain link Type 2 ISO 2015 All rights reserved 3BS ISO 16872:2015ISO 16872:2015(E)Keyl multiple pitch lengthp pitch (internal link length)dmmeasured diameter of material, except at the welddwmeasured diameter of material at the weld (type 1) orweld d
34、imension perpendicular to the plane of the chain link (type 2)G dimension in other planes (type 2)e length affected by welding, on either side of the centre of the chain linkw1internal width away from the weld (type 2)w3external width over the weld (type 1 and type 2)w4internal width at the weld (ty
35、pe 1)Figure 1 Chain link and chain dimensions5.2 Diameter toleranceThe definition of the material diameter and method of measurement shall be in accordance with ISO 1834. The diameter tolerance of the selected nominal sizes shall be as listed in Table 1, column 2 and shall be calculated in accordanc
36、e with Annex A.5.3 PitchThe dimensions and tolerances of the pitch for the selected nominal sizes shall be as listed in Table 1, column 3 and column 4, as shown in Figure 1, and calculated in accordance with Annex A.The nominal pitch, pn, is based upon 3dn(where dnis the nominal size of the hoist ch
37、ain). This formula can be varied up to a maximum of 3,3dn, subject also to the tolerances specified in Annex A.5.4 WidthThe dimensions of the width for the selected nominal sizes shall be as listed in Table 1, column 5, column 6, and column 7, as shown in Figure 1, and calculated in accordance with
38、Annex A.5.5 Standard gauge lengthThe dimensions and tolerances of the standard gauge length for the selected nominal sizes shall be as listed in Table 1, column 8 and column 9, and calculated in accordance with Annex A.5.6 Weld diameterThe maximum diameter at the weld for the selected nominal sizes
39、shall be as listed in Table 1, column 10 and column 11, as shown in Figure 1, and shall not exceed the following: type 1: the maximum diameter at the weld shall not be in excess of 8 % above the nominal size in any direction; type 2: the maximum diameter at the weld shall not be in excess of 8 % abo
40、ve the nominal size in any direction perpendicular to the plane of the chain link and 25 % in the other planes; the diameter of the steel at the weld shall nowhere be less than the actual diameter of the steel adjacent to the weld.4 ISO 2015 All rights reservedBS ISO 16872:2015ISO 16872:2015(E)5.7 L
41、ength dimensionally affected by weldingThe length dimensionally affected by welding, e, shall not extend by more than 0,6dnto either side of the centre of the chain link (see Figure 1).6 Material and manufacture6.1 Quality of material6.1.1 GeneralWithin the limitations given in 6.1.2 to 6.1.5, it is
42、 the responsibility of the manufacturer of the hoist chain to select the type of steel to be used so that the finished hoist chain, when suitably heat treated, complies with the mechanical properties specified in this International Standard and also possesses adequate low-temperature ductility and t
43、oughness to provide resistance against impact loading.The low-temperature ductility and toughness shall be achieved by complying with the toughness-testing requirements specified in 6.4.6.6.1.2 Type of steelThe steel used shall be produced by the electric process or by an oxygen-blown process.6.1.3
44、DeoxidationThe 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 six or finer when tested in accordance with ISO 643.To ensure the hoist chain is stabilized against strain-age embrittlement during services,
45、the steel shall contain at least 0,025 % aluminium.6.1.4 WeldabilityThe steel shall be of reliable weldable quality.6.1.5 Chemical compositionThe steel shall contain alloying elements in sufficient quantities so that the finished hoist chain, when heat treated in accordance with 6.2, complies with t
46、he mechanical properties specified in this International Standard.The steel shall contain no more sulfur and phosphorus than the limits given in Table 2.Table 2 Sulfur and phosphorus contentElementMax. content (% by mass) as determined byCast analysis Check analysisSulfur (S) 0,020 0,025Phosphorus (
47、P) 0,020 0,025Sum of S + P 0,035 0,0456.1.6 Finished conditionIn its finished condition, as supplied to the manufacturer of the hoist chain, the steel shall comply with the requirements of 6.1.2 to 6.1.5 as determined by check analysis on the rod, wire, or finished chain link. ISO 2015 All rights re
48、served 5BS ISO 16872:2015ISO 16872:2015(E)6.2 Heat treatmentHoist chains shall be hardened from a temperature above the Ac3point and tempered before being subjected to the manufacturing proof force (MPF), FMP.6.3 Working load limits (WLL)Table 3 gives values for the working load limits (WLL), calcul
49、ated on the basis given in Annex A for the selected nominal sizes.For nominal sizes not included in Table 3, the values for the working load limits (WLL) shall be calculated in accordance with Annex A.Table 3 Working load limits (WLL)Nominal size dnWorking load limit (WLL) t3 0,364 0,635 1,06,3 1,67,1 2,08 2,59 3,1510 4,011,2 5,012,5 6,313 6,76.4 Mechanical properties6.4.1 Manufacturing proof force (MPF)All hoist chains shall be subjected to the manufacturing proof
