1、April 2017 English price group 12No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 25.100.70!%c7“2649920www.din.deDIN
2、 EN 13743Safety requirements for coated abrasive products;English version EN 13743:2017,English translation of DIN EN 13743:2017-04Sicherheitsanforderungen fr Schleifmittel auf Unterlagen;Englische Fassung EN 13743:2017,Englische bersetzung von DIN EN 13743:2017-04Prescriptions de scurit pour les pr
3、oduits abrasifs appliqus;Version anglaise EN 13743:2017,Traduction anglaise de DIN EN 13743:2017-04SupersedesDIN EN 13743:200910www.beuth.deDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.Document comprises 20 pages 03.17 2 A comma
4、is used as the decimal marker. National foreword This standard includes safety requirements. This document (EN 13743:2017) has been prepared by Technical Committee CEN/TC 143 “Machine tools Safety” (Secretariat: SNV, Switzerland). The responsible German body involved in its preparation was DIN-Norme
5、nausschuss Werkzeuge und Spannzeuge (DIN Standards Committee Tools and Clamping Devices), Working Committee NA 121-04-03 AA “Coated abrasives”. The DIN Standard corresponding to the International Standard referred to in this document is as follows: ISO 3864-2 DIN ISO 3864-2 Amendments This standard
6、differs from DIN 13743:2009-10 as follows: a) the Scope has been clarified and the types of permissible abrasive grains have been specified; b) Table 3 has been updated with additional hazard designations; c) Table 5 has been revised according to current scientific and technical knowledge; d) Clause
7、 7 has been modified in order to avoid overlap with European legislation; e) the short signs on the restriction of use have been removed from Annex A. Previous editions DIN EN 13743: 2002-03, 2009-10 National Annex NA (informative) Bibliography DIN ISO 3864-2 Graphical symbols Safety colours and saf
8、ety signs Part 2: Design principles for product safety labels DIN EN 13743:2017-04 ,EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13743 January 2017 ICS 25.100.70 Supersedes EN 13743:2009English Version Safety requirements for coated abrasive products Prescriptions de scurit pour les produits
9、 abrasifs appliqus Sicherheitsanforderungen fr Schleifmittel auf Unterlagen This European Standard was approved by CEN on 14 November 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a natio
10、nal standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A vers
11、ion in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, C
12、zech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
13、Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 137
14、43:2017 EEN 13743:2017 (E) 2 Contents Page European foreword . 3 Introduction 4 1 Scope 5 2 Normative references 5 3 Terms and definitions . 5 3.1 General 5 3.2 Grinding machines 5 3.3 Type of application . 6 3.3.1 General 6 3.4 Symbols . 7 4 List of significant hazards 7 5 Safety requirements . 8 5
15、.1 General requirements . 8 5.1.1 General 8 5.1.2 Sequence of maximum operating speeds . 8 5.2 Safety factors. 9 5.2.1 Safety factors for flap wheels, flap discs and vulcanised fibre discs 9 5.2.2 Safety factors for spindle mounted flap wheels . 9 5.2.3 Safety factor for back-up pads for vulcanised
16、fibre discs . 9 5.3 Dimensional limitations and maximum operating speeds 9 5.4 Marking 11 6 Verification of the safety requirements . 11 6.1 Verification of the general requirements 11 6.2 Verification of the safety factor . 11 6.3 Verification of the dimensional requirements 12 6.4 Verification of
17、the marking 12 7 Information for use . 12 Annex A (normative) Marking 13 A.1 Content of marking 13 A.1.1 Marking requirements . 13 A.1.2 Additional inscriptions 15 A.2 Execution of marking 15 Annex B (normative) Colour codes . 16 Annex C (informative) Speed conversion table 17 Bibliography . 18 DIN
18、EN 13743:2017-04 EN 13743:2017 (E) 3 European foreword This document (EN 13743:2017) has been prepared by Technical Committee CEN/TC 143 “Machine tools - Safety”, the secretariat of which is held by SNV. This European Standard shall be given the status of a national standard, either by publication o
19、f an identical text or by endorsement, at the latest by July 2017, and conflicting national standards shall be withdrawn at the latest by July 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible
20、 for identifying any or all such patent rights. This document supersedes EN 13743:2009. Significant changes against EN 13743:2009 are as follows: a) the scope was clarified and the types of permissible abrasive grains were specified; b) Table 3 was updated with additional hazard designations; c) Tab
21、le 5 was revised according to current scientific and technical knowledge; d) Clause 7 was modified in order to avoid overlap with European legislation; e) the short signs on the restriction of use were removed from Annex A. According to the CEN-CENELEC Internal Regulations, the national standards or
22、ganizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembour
23、g, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 13743:2017-04 EN 13743:2017 (E) 4 Introduction This European Standard has been prepared to provide one means of conforming to essential safety requi
24、rements, e.g. of the General Product Safety Directive and associated EFTA regulations. This European Standard is addressed to manufacturers, suppliers and importers of the coated abrasive products and back-up pads described in the scope. In addition, it helps manufacturers, suppliers and importers o
25、f grinding machines in the selection of abrasive products, in order to reduce the risks and achieve conformity of the respective machinery with the Essential Safety Requirements of the Machinery Directive. The extent to which hazards are covered is indicated in the scope of this European Standard. D
26、IN EN 13743:2017-04 EN 13743:2017 (E) 5 1 Scope This European Standard is applicable to the following coated abrasive products and a combination of coated and non-woven abrasive products: flap wheels, flap discs, vulcanised fibre discs and spindle mounted flap wheels. It also applies to back-up pads
27、 for vulcanised fibre discs. These products are manufactured using the following abrasive grains: aluminium oxide, silicon carbide, diamond, or CBN. This European Standard specifies requirements and/or measures for removal or reduction of hazards resulting from the design and application of the coat
28、ed abrasive products and clamping devices. This European Standard also contains procedures and tests for verification of compliance with the requirements as well as safety information for use, which is to be made available to the user by the manufacturer. The hazards taken into consideration are lis
29、ted in Clause 4 of this standard. This European Standard does not apply to abrasive products entirely of non-woven web. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, on
30、ly the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 554, Standard atmospheres for conditioning and/or testing Specifications 3 Terms and definitions For the purposes of this document, the following terms and defi
31、nitions apply. 3.1 General 3.1.1 coated abrasive product abrasive product composed of backing, abrasive particles and bond and optionally a supporting element Note 1 to entry: Examples for supporting elements are pads and spindles. 3.1.2 clamping device device for fixing and positioning the abrasive
32、 product on the spindle of the grinding machine Note 1 to entry: Clamping devices include e.g. back-up pads for vulcanised fibre discs, and clamping flanges for flap wheels. 3.2 Grinding machines 3.2.1 stationary grinding machine grinding machine being fixed in position during operation Note 1 to en
33、try: See for example EN ISO 16089. DIN EN 13743:2017-04 EN 13743:2017 (E) 6 3.2.2 mobile grinding machine grinding machine not being fixed in position during operation Note 1 to entry: Mobile grinding machines are manually guided (but not supported) by hand during use, e.g. floor grinding machines.
34、3.2.3 hand-held grinding machine grinding machine being held in the hand during the grinding process Note 1 to entry: See for example EN ISO 11148-7, EN ISO 11148-9, EN 6074523 and EN ISO 19432. 3.3 Type of application 3.3.1 General See Table 1. 3.3.2 mechanically guided grinding grinding process wi
35、th feed movements of the abrasive product and/or workpiece guided by mechanical means 3.3.3 manually guided grinding grinding process with feed movements of the abrasive product and/or the workpiece manually guided by the operator 3.3.4 hand-held grinding grinding process with grinding machine entir
36、ely guided by the operators hands Table 1 Type of application Type of machine Type of application Abrasive product Workpiece Stationary grinding machines Mechanically guided grinding Fixed Guided mechanically Guided mechanically Fixed Guided mechanically Guided mechanically Stationary and mobile gri
37、nding machines Manually guided grinding Guided by hand Fixed Fixed Guided by hand Hand-held grinding machines Hand-held grinding Guided by hand Fixed DIN EN 13743:2017-04 EN 13743:2017 (E) 7 3.4 Symbols The symbols used in this European Standard are listed in Table 2. Table 2 Symbols Symbol Designat
38、ion Definition Unit nabDeflection speed of a spindle mounted flap wheel Revolutions per minute at which the spindle of a rotating spindle mounted flap wheel is deflecting under centrifugal force 1/min nmaxMaximum permissible speed of rotation Revolutions per minute of a rotating new abrasive product
39、 at maximum operating speed 1/min SabSafety factor against spindle deflection for a spindle mounted flap wheel Deflection speed divided by maximum permissible speed of rotation: abab=maxnSn vsMaximum operating speed Maximum permissible peripheral speed of a rotating abrasive product m/s vbrBursting
40、speed Peripheral speed at which a rotating abrasive product breaks due to centrifugal force m/s vbr minMinimum bursting speed Peripheral speed, which a rotating abrasive product shall at least reach without bursting due to centrifugal force m/s fbrBurst speed factor Bursting speed divided by maximum
41、 operating speed: brrs=bvfv SbrSafety factor against bursting due to centrifugal force Bursting speed divided by maximum operating speed, all squared: brbrs=2vSv 4 List of significant hazards The significant hazards are given in Table 3. DIN EN 13743:2017-04 EN 13743:2017 (E) 8 Table 3 List of signi
42、ficant hazards Hazard designation Hazardous situation (Examples) Relevant clauses in the standard Ejection of parts 1. Abrasive product breakage caused by: improper design 5.1, 5.2, 5.3 and 5.4 manufacturing defects 5.1 wrong selection 5.4, Clause 7 and Annex A improper handling and storage Clause 7
43、 improper use (mounting and grinding process) Clause 7 2. Grinding debris Clause 7 dust, airborne particles Clause 7 solid particles Clause 7 Vibration Hand arm vibration on hand-held machines caused by: improper use Clause 7 incorrect mounting Clause 7 Contact with the rotating/oscillating abrasive
44、 product Improper use Clause 7 Noise Insufficient ear protection Clause 7 5 Safety requirements 5.1 General requirements 5.1.1 General Coated abrasive products shall be designed and manufactured in such a way that they resist the forces and loads that are to be expected when used as intended. They s
45、hall not present visible defects affecting safety and shall comply with the requirements listed in the following clauses. 5.1.2 Sequence of maximum operating speeds Coated abrasive products shall be manufactured for maximum operating speeds according to the following sequence: 125 50 vs 80 3,5 1,87
46、5.2.2 Safety factors for spindle mounted flap wheels Spindle mounted flap wheels shall have a safety factor against bursting due to centrifugal forces of Sbr= 3 at their maximum operating speed. The spindle shall have a safety factor against deflection of Sab= 1,3. 5.2.3 Safety factor for back-up pa
47、ds for vulcanised fibre discs Back-up pads for vulcanised fibre discs shall fulfil a safety factor against bursting due to centrifugal force of Sbr= 3,5 at their maximum permissible speed of rotation. 5.3 Dimensional limitations and maximum operating speeds Coated abrasive products shall comply with
48、 the dimensional limitations and maximum operating speeds as specified in Table 5. DIN EN 13743:2017-04 EN 13743:2017 (E) 10 Table 5 Dimensional limitations and maximum operating speeds Designation, shape, dimensional lettersbType of machineaType of applicationaDimensional limitations mm Maximum ope
49、rating speeds vsm/s Flap wheel D T Stationary grinding machines Mechanically guided grinding / 40, 50 and 63 Stationary and mobile grinding machines Manually guided grinding D 600 T 300 D1 0,5 D 40, 50 and 63 Hand-held grinding machines Hand-held grinding Dmax Tmax250 50 200 75 125 100 100 125 D1 0,33 D 40, 50 and 63 Spindle mounted flap wheel D T SdHand-held grinding machines Hand-held grinding D 80 T 50 40 Flap disc D
