BS-302-3-1987.pdf
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1、BRITISH STANDARD BS 302-3: 1987 Stranded steel wire ropes Part 3: Specification for zinc coated ropes for ships UDC 677.721:669.58:629.12 BS 302-3:1987 This British Standard, having been prepared under the direction of the Mechanical Handling Standards Committee, was published under the authority of
2、 the Board of BSI and comes into effect on 30 June 1987 BSI 03-1999 First published, as BS 302, September 1927 First revision, as BS 302 and 621, December 1957 Second revision, as BS 302, May 1968 Third revision, as BS 302-3, June 1987 The following BSI references relate to the work on this standard
3、: Committee reference MHE/2 Draft for comment 85/70787 DC ISBN 0 580 15642 7 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Mechanical Handling Standards Committee (MHE/-) to Technical Committee MHE/2, upon which the following bodies we
4、re represented: Associated Offices Technical Committee Association of Supervisory and Executive Engineers British Coal British Ports Association and the National Association of Ports Employers British Railways Board British Steel Industry (Wire Section) Bureau Veritas Chain Testers Association of Gr
5、eat Britain Department of the Environment (Property Services Agency) Federation of Manufacturers of Construction Equipment and Cranes Federation of Wire Rope Manufacturers of Great Britain Health and Safety Executive Institution of Mechanical Engineers Institution of Mining Engineers Institution of
6、Mining and Metallurgy Ministry of Defence National Association of Lift Makers Zinc Development Association Amendments issued since publication Amd. No.Date of issueComments BS 302-3:1987 BSI 03-1999i Contents Page Committees responsibleInside front cover Forewordii 1Scope1 2Definitions1 3Compliance1
7、 4Wire rope constructions and sizes1 5Material1 6Direction of lay2 7Lubrication2 8Minimum breaking load2 Table 1 Wire rope constructions and sizes1 Table 2 Construction groups with steel core2 Table 3 6 12 construction group with fibre cores3 Table 4 6 24 construction group with fibre cores4 Table 5
8、 6 19 construction group with fibre main core5 Table 6 6 37 construction group with fibre main core6 Publications referred toInside back cover BS 302-3:1987 ii BSI 03-1999 Foreword This Part of BS 302 has been prepared under the direction of the Mechanical Handling Standards Committee. It is one Par
9、t of a combined revision of BS 302:1968, BS 236:1968, BS 329:1968, BS 330:1968, BS 365:1968 and BS 3530:1968, which are withdrawn. BS 302 is now published in six Parts and takes account of both national and international developments since 1968. This Part (Part 3) specifies requirements for zinc coa
10、ted ropes for ships additional to the general requirements in Part 1. Other Parts specify the additional requirements for other particular uses of ropes: Part 2: Specification for ropes for general purposes; Part 4: Specification for ropes for lifts; Part 5: Specification for ropes for hauling purpo
11、ses; Part 6: Specification for ropes for mine hoisting. Two further Parts are in preparation, covering larger diameter ropes (64 mm to 205 mm diameter) and higher strength ropes and will be Parts 7 and 8 respectively. In line with the principles of international standard ISO 2408, published by the I
12、nternational Organization for Standardization (ISO), the constructions are grouped according to the number of outer wires in the strands. The general requirements of BS 302-1 and the methods used for calculating breaking loads and approximate masses are in accordance with ISO 2408. In respect of ind
13、ividual usages the ropes in Parts 2 and 3 are fully in accordance with ISO 2408 and those in section two of Part 4 are in accordance with ISO 4344. In each of these Parts however, certain additional ropes still in common use in the UK have been included. In line with current international practice,
14、the term “zinc coated” has been adopted in this standard in place of “galvanized”. The terms are synonymous. Purchasers ordering to BS 302 are advised to specify in their purchasing contract that the manufacturer operate a quality system in compliance with the appropriate Part of BS 5750, or suitabl
15、e equivalent, to ensure themselves that products claimed to comply with BS 302 consistently achieve the required level of quality. Wire rope users will find valuable information in the companion publication BS 6570 “Code of practice for the selection, care and maintenance of steel wire ropes”. A Bri
16、tish 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 document comprises a fro
17、nt cover, an inside front cover, pages i and ii, pages 1 to 6, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. BS 302-3:1987 BSI 03-19991 1 Sc
18、ope This Part of BS 302 specifies the requirements for zinc coated steel wire ropes for ships and includes ropes for standing rigging, cargo lashings, moorings, towing and certain types of cargo handling gear. It is for use in conjunction with Part 1. NOTE 1Information to be supplied by the purchase
19、r on the enquiry and order is given in Appendix F of BS 302-1:1987. NOTE 2The titles of the publications referred to in this standard are listed on the inside back cover. 2 Definitions For the purposes of this Part of BS 302, the definitions given in BS 302-1 apply. 3 Compliance Ropes in accordance
20、with BS 302-3 shall comply with this Part and with BS 302-1. 4 Wire rope constructions and sizes Constructions and size ranges shall be as given in Table 1. NOTEIn the absence of a precise indication by the purchaser on the enquiry and order, the choice of construction within a group is at the discr
21、etion of the supplier. 5 Material 5.1 Wire 5.1.1 General. The wire used for the manufacture of wire ropes specified in this Part, as shown in Table 1, shall comply with sections one and two of BS 2763:1982. The mechanical tests shall be confined to the tensile strength and torsion requirements. 5.1.
22、2 Wire finish. The wire shall be zinc coated according to BS 2763. The zinc coating shall be class Z or class A. NOTEIt will need to be stated by the purchaser on the enquiry and order if class A is required, otherwise class Z will be supplied. 5.1.3 Tensile grade of wires. The tensile grade of the
23、wires, other than the king wires, shall be 1 420 N/mm2 1) or 1 570 N/mm2 tensile grades, as indicated in Table 2 to Table 6 except in the case of 3 mm to 7 mm diameter 6 12 and 6 19 constructions which shall be 1 770 N/mm2 tensile grade. Table 1 Wire rope constructions and sizes 1) 1 N/mm2 = 1 MPa.
24、Rope group DescriptionSize range (diameter) Typical construction mm Ropes with steel wire main core 7 7Up to seven outer wires in a strand. One layer of wires over a king wire. 12 to 286 7 (6/1) WSC 7 198 to 12 outer wires in a strand. Two layers of wires over a king wire. 32 to 486 19 (12/6/1) WSC
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