BS EN 15865-2009 Adhesives - Determination of torque strength of anaerobic adhesives on threaded fasteners《粘合剂 螺纹紧固件上用厌氧粘合剂的扭矩强度的测定》.pdf

1、BS EN 15865:2009ICS 83.180NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDAdhesives Determination oftorque strength ofanaerobic adhesiveson threaded fasteners(ISO 10964:1993modified)This British Standardwas published under theauthority of the StandardsPolicy and

2、 StrategyCommittee on 31 May 2009 BSI 2009ISBN 978 0 580 63988 3Amendments/corrigenda issued since publicationDate CommentsBS EN 15865:2009National forewordThis British Standard is the UK implementation of EN 15865:2009. Itsupersedes BS EN ISO 10964:1997 which is withdrawn.The UK participation in it

3、s preparation was entrusted to TechnicalCommittee PRI/52, Adhesives.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct applicati

4、on.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS EN 15865:2009EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 15865April 2009ICS 83.180 Supersedes EN ISO 10964:1997 English VersionAdhesives - Determination of torque strength of anaerobicadhesives on threaded fa

5、steners (ISO 10964:1993 modified)Adhsifs - Dtermination des couples fonctionnels sur desfixations filetes colles avec des adhsifs anarobies (ISO10964:1993 modifie)Klebstoffe - Bestimmung der Drehfestigkeit von anaerobenKlebstoffen auf geklebten Gewinden (ISO 10964:1993modifiziert)This European Stand

6、ard was approved by CEN on 26 March 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such

7、 nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language an

8、d notified to the CEN Management Centre has the same status as theofficial versions.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,

9、 Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of explo

10、itation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15865:2009: EBS EN 15865:2009EN 15865:2009 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Principle 6 5 Apparatus .6 6 Test specimens 8 7 Application of adhesiv

11、e 8 8 Assembly 9 9 Test procedure 10 10 Precision 10 11 Test report . 11 Bibliography . 12 BS EN 15865:2009EN 15865:2009 (E) 3 Foreword This document (EN 10964:2009) has been prepared by Technical Committee CEN/TC 193 “Adhesives”, the secretariat of which is held by AENOR. This European Standard sha

12、ll be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2009, and conflicting national standards shall be withdrawn at the latest by October 2009. Attention is drawn to the possibility that some of the elements of this doc

13、ument may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 10964:1997. Safety statement Persons using this document should be familiar with the normal laboratory practice, if applicable. T

14、his document cannot address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any regulatory conditions. Environmental statement It is understood that some of the materi

15、al permitted in this standard may have negative environmental impact. As technological advantages lead to better alternatives for these materials, they will be eliminated from this standard to the extent possible. At the end of the test, the user of the standard shall take care to carry out an appro

16、priate disposal of the wastes, according to local regulation. According 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, Finlan

17、d, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 15865:2009EN 15865:2009 (E) 4 1 Scope The test method described in this Eur

18、opean Standard is used to make comparative assessments of the securing or locking effect of anaerobic adhesives used in threaded assemblies. This method may be used for other types of adhesives, if considered suitable. 2 Normative references The following referenced documents are indispensable for t

19、he application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 20898-2, Mechanical properties of fasteners - Part 2: Nuts with specified proof load values Coarse threa

20、d (ISO 898-2:1992) EN ISO 291, Plastics - Standard atmospheres for conditioning and testing (ISO 291:2008) EN ISO 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel - Part 1: Bolts, screws and studs with specified property classes - Coarse thread and fine pitch thread (IS

21、O 898-1:2009) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 on torque, ON maximum torque required to screw the nut onto a bolt precoated with adhesive 3.2 input torque, INtorque applied to introduce or increase the axial load in the assembl

22、y It is used to overcome friction in the thread and under the bolt head 3.3 breakaway torque, BAinitial torque required to break the bond measured at the first movement between the nut and bolt, when unscrewing an unseated assembly (without spacer sleeve, see Figure 1) BS EN 15865:2009EN 15865:2009

23、(E) 5 Dimensions in millimetres General tolerances 0,2 mm Roughness value in micrometres Key 1 Sliding friction NOTE 47 HRC to 50 HRC hardness carbon steel. Surface condition: corrosion and grease-free. Figure 1 Spacer sleeve 3.4 breakloose torque, BLinitial torque required to decrease or eliminate

24、the axial load in a preloaded assembly 3.5 prevailing torque, Ptorque measured after the initial breakage of the bond at a specified angle of rotation of the nut. For testing against a specification, the angle shall be 180 BS EN 15865:2009EN 15865:2009 (E) 6 NOTE 1 A round-robin test program showed

25、there is no significant difference between prevailing torque measured at 180 and prevailing torque determined as the mean of the four torque readings determined at 90, 180, 270 and 360. NOTE 2 For quality control or purposes other than testing the adhesive against a specification, other angles may b

26、e agreed between the manufacturer and the purchaser of the adhesive. If prevailing torque is measured at an angle other than 180, the angle shall be denoted by a subscript; i.e. 360. Otherwise, prevailing torque measured at 180 shall be designated by PNOTE 3 The prevailing torque can be defined as m

27、axwhen not testing to a specification, maxbeing the maximum torque measured within the first 360 rotation of the nut after the initial breakage of the bond. 4 Principle The test method consists of determining the torque required to unscrew a bonded nut and bolt assembly, including the initial torque

28、 required to break the bond, and the torque measured after turning the nut 180. The torque strengths are determined for unseated assemblies and for seated assemblies preloaded with a specified input torque. 5 Apparatus 5.1 Test machine with graphic recording, consisting of a clamping device to secur

29、e the bolt head, a device for turning the nut at a constant speed, a torque-measuring device (see Figure 2) and a recorder with a response time of 1 ms or less. If a recorder is not used, a data storage system shall be employed so that the torque data as a function of the angle of turning can be rec

30、alled and plotted at a later time. BS EN 15865:2009EN 15865:2009 (E) 7 Key 1 Torquemeter 2 Mandrel 3 Nut clamping or securing device 4 Test specimen 5 Bolt clamping or securing device 6 Mandrel 7 Turning device Figure 2 Example of test apparatus with graphic recording BS EN 15865:2009EN 15865:2009 (

31、E) 8 5.2 Test machine with direct reading, consisting of a clamping device to secure the head of the bolt, and a torque wrench accurate to 5 % (see Figure 3). Key 1 Torque wrench 2 Nut clamping or securing device 3 Test specimen 4 Bolt clamping or securing device Figure 3 Example of test apparatus w

32、ith direct reading 6 Test specimens 6.1 For testing against a specification, the test specimen shall be an M10 x 38, property class 8.8, zinc-phosphated steel bolt and a similar M10 nut, specified in EN ISO 898-1 and EN 20898-2. NOTE Any size and surface finish of fastener combination may be used by

33、 agreement between the interested parties. All fasteners used in unseated assemblies shall have a radial gap of 0,1 mm to 0,2 mm on the minor diameter. The cutting oil used in their manufacture shall be lanolin-free. 6.2 Degrease all nuts and bolts in a permitted cleaning medium, store in a desiccat

34、or at (23 2) C, and keep them clean. Use degreased specimens within four days or discard. 6.3 The specimens shall be conditioned and tested in one of the standard laboratory atmospheres specified in EN ISO 291, which shall be stated in the test report. 7 Application of adhesive 7.1 Nuts and bolts sh

35、all be preassembled prior to application of the adhesive. Any pairs showing sticking due to burrs or damaged threads shall be discarded. Disassemble the parts. BS EN 15865:2009EN 15865:2009 (E) 9 7.2 Apply sufficient adhesive to the bolt to completely cover an area equal to the height of the nut plu

36、s two threads. Also apply adhesive to the threads of the nut. 8 Assembly 8.1 Assemble not less than five specimens for each test according to 8.2 or 8.3. 8.2 For unseated assemblies, screw the nut onto the bolt by hand allowing two threads to protrude. For preapplied adhesive, screw the nut onto the

37、 coated bolt using the apparatus in 5.1 or 5.2 and record the on torque. Allow two coated threads to protrude (see Figure 4). Key 1 Allow two threads to show 2 Coated part Figure 4 Unseated assembly 8.3 For seated assemblies, screw the nut onto the bolt by hand until the nut strikes the spacer sleev

38、e. Using the apparatus described in 5.1 or 5.2, apply the input torque to load the assembly (see Figure 5). NOTE The preferred input torque is 40 Nm. BS EN 15865:2009EN 15865:2009 (E) 10 Key 1 Coated part Figure 5 Seated assembly 8.4 Cure the adhesive in accordance with the adhesive manufactures ins

39、truction, with the test specimens standing vertically on the bolt heads. 9 Test procedure 9.1 Secure the bolt head in the clamping device and unscrew the nut at a constant speed. The speed of testing shall be given in the test report. NOTE The preferred speeds are 2 r/min or 5 r/min or 10 r/min. Whi

40、le it is recognized that a truly constant test speed using a torque wrench as specified in 5.2 cannot be achieved, experience has show that a specified testing speed can be closely approximated if care is taken to do so. 9.2 Record the breakaway torque or breakloose torque and the prevailing torque

41、in Nm, as measured on the graphic recording equipment or from a direct reading if a torque wrench is used. If graphic recording equipment is used, breakaway and breakloose torques shall be measured at the point on the curve of initial deviation from linearity. 10 Precision The precision of this test

42、 method is not known because interlaboratory data are not available. When interlaboratory data are obtained, a precision statement will be added at the time of revision. BS EN 15865:2009EN 15865:2009 (E) 11 11 Test report The test report shall contain, at least, the following information: a) referen

43、ce to this European Standard (EN 15865); b) all information necessary for complete identification of the adhesive tested, including type, source, date of manufacture, manufactures code number, batch or lot number, and form; c) specimen size used; d) method of cleaning and surface preparation prior t

44、o bonding; e) application and bonding conditions used in preparating the specimens; f) conditioning procedure used for specimens prior to testing, and test atmosphere; g) number of specimens tested; h) testing speed; i) input torque; j) test equipment and recording mode; k) average values and standa

45、rd deviations determined for breakaway torque, breakloose torque and prevailing torque. BS EN 15865:2009EN 15865:2009 (E) 12 Bibliography 1 EN ISO 898-6, Mechanical properties of fasteners Part 6: Nuts with specifed proof load values Fine pitch thread (ISO 898-6:1994) BS EN 15865:2009This page has b

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