1、BSI Standards PublicationBS ISO 5718:2013Harvesting equipment Blades for agricultural rotarymowers RequirementsCopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO
2、5718:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 5718:2013. Itsupersedes BS ISO 5718:2002 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee AGE/32, Agricultural implements and trailers.A list of organization
3、s represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978
4、0 580 72694 1ICS 65.060.50Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 28 February 2014.Amendments issued since publicationDate Text affectedCopyright British S
5、tandards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO 5718:2013 ISO 2013Harvesting equipment Blades for agricultural rotary mowers RequirementsMatriel de rcolte Lames pour faucheuses r
6、otatives agricoles PrescriptionsINTERNATIONAL STANDARDISO5718Second edition2013-12-15Reference numberISO 5718:2013(E)Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-B
7、S ISO 5718:2013ISO 5718:2013(E)ii ISO 2013 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2013All rights 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 po
8、sting on the internet or an intranet, without prior written permission. Permission can be requested from 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 copyrigh
9、tiso.orgWeb www.iso.orgPublished in SwitzerlandCopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO 5718:2013ISO 5718:2013(E) ISO 2013 All rights reserved iiiConten
10、ts PageForeword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Requirements for blades 34.1 Material requirements 34.2 Test procedures for blades . 35 Marking and documentation . 85.1 Marking . 85.2 Documentation . 8Copyright British Standards Institution Provided by IHS under lic
11、ense with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO 5718:2013ISO 5718:2013(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work o
12、f 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 committee. International organizations, governmental and non-governmenta
13、l, 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.The procedures used to develop this document and those intended for its further maintenance are described in the IS
14、O/IEC Directives, 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 possibil
15、ity that some of the 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 pa
16、tent declarations received (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 inf
17、ormation about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 23, Tractors and machinery for agriculture and forestry, Subcommittee SC 7, Equipment for harv
18、esting and conservation.This second edition cancels and replaces the first edition (ISO 5718:2002), which has been technically revised.iv ISO 2013 All rights reservedCopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or ne
19、tworking permitted without license from IHS-,-,-BS ISO 5718:2013INTERNATIONAL STANDARD ISO 5718:2013(E)Harvesting equipment Blades for agricultural rotary mowers Requirements1 ScopeThis International Standard specifies requirements for blades used on rotary disk mowers and rotary drum mowers, mounte
20、d, semi-mounted, trailed, or self-propelled, as used for forage crop harvesting in agriculture only.It specifies requirements for testing and marking of such blades.NOTE 1 The main purpose of this International Standard is to set material characteristics. Blades on agricultural rotary mowers are exp
21、osed to considerable centripetal forces and impacts with foreign objects. A bend test and impact test to check the brittleness and toughness of the material is therefore included in this International Standard.NOTE 2 This International Standard does not specify dimensional requirements.2 Normative r
22、eferencesThe following documents, in whole or in part, are normatively referenced in this document 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
23、.ISO 6508-1, Metallic materials Rockwell hardness test Part 1: Test method (scales A, B, C, D, E, F, G, H, K, N, T)3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1rotary mowermower in which one or more functional components cut or shear forage c
24、rop by impact without mulching and rotate about a vertical axis3.1.1drum mowerrotary mower (3.1) where the drive line is above the path of the cutting elementsNote 1 to entry: See Figure 1. ISO 2013 All rights reserved 1Copyright British Standards Institution Provided by IHS under license with BSI -
25、 Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO 5718:2013ISO 5718:2013(E)Figure 1 Drum mower3.1.2rotary disc mowerrotary mower (3.1) where the drive line is below the path of the cutting elementsNote 1 to entry: See Figure 2.Figure 2 Disc
26、mower3.2bladespivoting element, which can be flat, twisted, wrenched, or deformed, otherwise performing the cutting of the crop3.3bending zonearea in which the blade is deformed by the bend testNote 1 to entry: See Figure 3.2 ISO 2013 All rights reservedCopyright British Standards Institution Provid
27、ed by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO 5718:2013ISO 5718:2013(E)4 Requirements for blades4.1 Material requirementsBlades shall be made of steel chosen by the manufacturer. The values of Rockwell h
28、ardness shall be at least 38 HRC, in accordance with ISO 6508-1. The degree of brittleness shall meet the requirements of 4.2.4.2 Test procedures for blades4.2.1 Bend testThe blade shall progressively be bent within the bending zone with an inside radius r = 16 mm (see Figure 3), at least through an
29、 angle (see Table 1), and with a minimum test speed of the ram of 20 mm/s. The width of the ram and of the bearings shall be at least equal to or greater than the width of the blade to be tested. Table 1s mm degrees ()3,5 753,5 to 4,5 454,5 30Blades which are not flat shall be tested in the most unf
30、avourable position. The middle of the bending zone shall be at the middle of the total length of the blade. The distance, l, between the bearings shall be calculated using Formula (1):lss=+()32 32 (1)and shall be constant during the bend test. The bearings shall have an outside radius rb= 10 mm and
31、shall be mounted rotatable.A spring-back rate is not taken into account.After the bend test, the blade shall not present any visible cracks. ISO 2013 All rights reserved 3Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction
32、or networking permitted without license from IHS-,-,-BS ISO 5718:2013ISO 5718:2013(E)Dimensions in millimetresr bKey1 ram2 blade3 bearings4 bending zoneNOTE 1 The rollers are one example of bearings.NOTE 2 The flat blade shown is only one example of blades covered by this International Standard.Figu
33、re 3 Bend test4.2.2 Impact test4.2.2.1 GeneralThis test is only applicable for blades made of non-homogenous material and/or non-homogenous metallurgic properties and/or which are only partly heat treated. For homogenous material, it is only necessary for one blade out of each heat of steel.NOTE Typ
34、ically, heats are over 50 tons with many mills running heats about 300 tons.4.2.2.2 Test fixtureAll blades selected for impact testing shall be tested on a test fixture with a pitch circle diameter of between 320 mm and 500 mm (see Figure 4).4 ISO 2013 All rights reservedCopyright British Standards
35、Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO 5718:2013ISO 5718:2013(E)Dimensions in millimetresa) steel rod insertion on a straight line perpendicular into the path of the bladeb) stee
36、l rod insertion on a straight line tangential into the path of the blade ISO 2013 All rights reserved 5Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO 5718:201
37、3ISO 5718:2013(E)c) steel rod insertion on a circular line into the path of the bladed) steel rod insertion on a straight line from below into the path of the bladeKey1 rotating blade2 steel rod3 path of the steel rod4 path of the blade5 test fixture for the steel rodFigure 4 Example of a blade impa
38、ct test fixture4.2.2.3 Test procedure4.2.2.3.1 The blade shall be fixed into the test fixture as it is fixed on the disc or drum. The test fixture with the blade shall be rotated with a rotating speed of minimum 90 m/s and maximum 96,5 m/s measured at the outer blade tip circle. When at specified ro
39、tating speed, insert a steel rod with a diameter of 30 mm having a minimum tensile strength Rmof 490 N/mm2into the path of the rotating blade as follows (see Figure 4). The steel rod is oriented vertically to the plane of the rotating blade.6 ISO 2013 All rights reservedCopyright British Standards I
40、nstitution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO 5718:2013ISO 5718:2013(E) The steel rod is inserted parallel to the plane of the rotating blade with an insert speed of between 3 m/s and 5
41、m/s. The path of insertion can be either straight line or circular. In the latter case, the minimum radius of the circular path shall be 250 mm. The distance between the cutting plane of the rotating blade and the steel rod is at least 30 mm from the top surface of the rod clamp, but not more than 2
42、/3 of the total length of the steel rod exposed above the clamp surface (see Figure 5). The minimum length of the steel rod above the clamp surface is at least 90 mm. The position of insertion shall be such that the whole cross section of the steel rod is just covered by the outermost path of the bl
43、ade. The dwell period of the steel rod shall be between 1 s and 2 s. Afterwards, the steel rod shall be removed from the blade path.Dimensions in millimetresKey1 blade2 steel rod3 cutting plane4 rod clampFigure 5 Test rod and cutting plane intersection4.2.2.3.2 Blades having two cutting edges shall
44、be tested on both cutting edges.4.2.2.3.3 After each test run, prior to the next test run, the steel rod shall be either replaced or rotated to a location not damaged.4.2.2.4 Test acceptance4.2.2.4.1 After the test, the blade can show deformation but shall not show any visible cracks. ISO 2013 All r
45、ights reserved 7Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO 5718:2013ISO 5718:2013(E)4.2.2.4.2 The loss of mass shall be not more than 5 % of the total ini
46、tial mass of the blade.5 Marking and documentation5.1 MarkingFor identification, traceability, and safety purposes, the following shall be marked on each blade: name of the manufacturer or trademark; date, or lot number, or production run number, or another production marking; if necessary, the dire
47、ction of movement.Additional markings such as the dimensions of the blade are allowed.These indications, as appropriate, shall be labelled on the outside of the packing in addition to the number of this International Standard (i.e. “ISO 5718”).5.2 DocumentationFor purposes of traceability, the perfo
48、rmance of the tests including the test results shall be documented.8 ISO 2013 All rights reservedCopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO 5718:2013Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for
