1、June 2012 Translation by DIN-Sprachendienst.English price group 8No 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 91
2、.100.15!$|tm“1898174www.din.deDDIN EN 14617-4Agglomerated stone Test methods Part 4: Determination of the abrasion resistance,German version EN 14617-4:2012English translation of DIN EN 14617-4:2012-06Knstlich hergestellter Stein Prfverfahren Teil 4: Bestimmung der AbriebbestndigkeitEnglische berset
3、zung von DIN EN 14617-4:2012-06Pierre agglomre Mthodes dessai Partie 4: Dtermination de la rsistance lusureTraduction anglaise de DIN EN 14617-4:2012-06SupersedesDIN EN 14617-4:2005-06www.beuth.deDocument comprises 12 pagesIn case of doubt, the German-language original shall be considered authoritat
4、ive.05.12 DIN EN 14617-4:2012-06 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 246 “Natural stones” (Secretariat: UNI, Italy). At present a DIN committee does not exist for this standard since the parties concerned have not s
5、hown any interest in work on the subject. The DIN Standard corresponding to the International Standard referred to in this document is as follows ISO 8486-1 DIN ISO 8486-1 Amendments This standard differs from DIN EN 14617-4:2005-06 as follows: a) in Clause 6 “Calibration” the method used to make th
6、e groove has been changed; b) the groove measurement method has been rendered more precise; c) the standard has been editorially revised. Previous editions DIN EN 14617-4: 2005-06 National Annex NA (informative) Bibliography DIN ISO 8486-1, Bonded abrasives Determination and designation of grain siz
7、e distribution Part 1: Macrogrits F4 to F220 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14617-4 April 2012 ICS 91.100.15 Supersedes EN 14617-4:2005English Version Agglomerated stone - Test methods - Part 4: Determination of the abrasion resistance Pierre agglomre - Mthodes dessai - Partie
8、4: Dtermination de la rsistance lusure Knstlich hergestellter Stein - Prfverfahren - Teil 4: Bestimmung der Abriebbestndigkeit This European Standard was approved by CEN on 9 March 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for givi
9、ng this European Standard the status of a national 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 offi
10、cial versions (English, French, German). A version 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
11、 Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
12、Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14617-4:2012: E
13、EN 14617-4:2012 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Principle of the test method .44 Abrasive material .45 Apparatus .46 Calibration 77 Test specimen preparation .77.1 Sampling .77.2 Specimens preparation .78 Procedure .88.1 Test method 88.2 Groove measurement 89 Test re
14、sults .810 Test report 9Bibliography . 10DIN EN 14617-4:2012-06 EN 14617-4:2012 (E) 3 Foreword This document (EN 14617-4:2012) has been prepared by Technical Committee CEN/TC 246 “Natural stones”, the secretariat of which is held by UNI. This European Standard shall be given the status of a national
15、 standard, either by publication of an identical text or by endorsement, at the latest by October 2012, and conflicting national standards shall be withdrawn at the latest by October 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent r
16、ights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 14617-4:2005. Clause 6 has been modified since the last edition of this European Standard. This European Standard is one of a series of standards for test methods for ag
17、glomerated stones which includes the following: EN 14617-1, Agglomerated stone Test methods Part 1: Determination of apparent density and water absorption EN 14617-2, Agglomerated stone Test methods Part 2: Determination of flexural strength (bending) EN 14617-4, Agglomerated stone Test methods Part
18、 4: Determination of the abrasion resistance EN 14617-5, Agglomerated stone Test methods Part 5: Determination of freeze and thaw resistance EN 14617-6, Agglomerated stone Test methods Part 6: Determination of thermal shock resistance EN 14617-8, Agglomerated stone Test methods Part 8: Determination
19、 of resistance to fixing (dowel hole) EN 14617-9, Agglomerated stone Test methods Part 9: Determination of impact resistance EN 14617-10, Agglomerated stone Test methods Part 10: Determination of chemical resistance EN 14617-11, Agglomerated stone Test methods Part 11: Determination of linear therma
20、l expansion coefficient EN 14617-12, Agglomerated stone Test methods Part 12: Determination of dimensional stability EN 14617-13, Agglomerated stone Test methods Part 13: Determination of electrical resistivity EN 14617-15, Agglomerated stone Test methods Part 15: Determination of compressive streng
21、th EN 14617-16, Agglomerated stone Test methods Part 16: Determination of dimensions, geometric characteristics and surface quality of modular tiles According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European
22、 Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey a
23、nd the United Kingdom DIN EN 14617-4:2012-06 EN 14617-4:2012 (E) 4 1 Scope This European Standard specifies a method for determining the abrasion resistance of agglomerated stone products. 2 Normative references The following documents, in whole or in part, are normatively referenced in this documen
24、t 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. EN 13373, Natural stone test methods Determination of geometric characteristics on units ISO 84
25、86-1, Bonded abrasives Determination and designation of grain size distribution Part 1: Macrogrits F4 to F220 3 Principle of the test method The test method is based on scraping off the upper face of the agglomerated stone specimen using an abrasive material under standard conditions. 4 Abrasive mat
26、erial The abrasive required for this test is corundum (white fused aluminium oxide, i.e. alumina) with grit size of F80 according to standard ISO 8486-1. It shall not be used more than three times. 5 Apparatus The wearing machine is of the type of Figure 1, which consists of a rotating abrasion whee
27、l, a storage hopper with one or two control valves to regulate the feed of the abrasive material into a flow guidance hopper, a clamping trolley, a counterweight and a device measuring the number of revolutions. Whenever two valves are used, one, which can be permanently set, shall be used to contro
28、l the flow rate of corundum, while the other one is used to turn the flow on and off. The hardness of the steel shall be 203 HB to 245 HB. Its diameter shall be (200 1) mm and its edge thickness (10 1) mm. It shall be driven to a rotation speed of 75 rotations in (60 3) s. A mobile clamping trolley
29、is mounted on bearings and forced to press the test specimen against the wheel by a counterweight of constant mass. The storage hopper containing the abrasive material feeds a flow guidance hopper. The flow guidance hopper (cylindrical or rectangular) shall have a slotted outlet: the length of the s
30、lot shall be (9 1) mm and the width shall be adjustable. The body of the flow guidance hopper shall be at least 10 mm bigger than the slot in all directions (though this is not required in the case of a rectangular hopper with at least one of the sides inclined down to the length (see Figure 2, Exam
31、ple B). DIN EN 14617-4:2012-06 EN 14617-4:2012 (E) 5 Key 1 clamping trolley 2 fixing screw 3 specimen 4 control valve 5 storage hopper 6 flow guidance hopper 7 abrasion wheel 8 counterweight 9 flow guidance slot 10 groove 11 abrasive material flow 12 abrasive collector 13 wedge Figure 1 Principle of
32、 wearing machine The distance of the fall between the slot and the axle of the abrasion wheel shall be (100 5) mm, and the flow of abrasive material shall be 1 mm to 5 mm behind the leading edge of the wheel (see Figure 3). The minimum flow rate of the abrasive material through the flow guidance slo
33、t shall be 100 g/100 revolutions onto the abrasion wheel. The flow rate of abrasive material shall be constant, and the minimum level of the abrasive in the flow guidance hopper shall be 25 mm (see Figure 3). In addition, the following apparatuses are needed: a magnifying glass (preferably equipped
34、with a light), a steel ruler and a digital calliper. DIN EN 14617-4:2012-06 EN 14617-4:2012 (E) 6 Dimensions in millimetres Key A inclined side B vertical side (for key see Figure 1) Figure 2 Slot position in the flow guidance hopper (for key see Figure 1) Dimensions in millimetres Figure 3 Position
35、 slot relative to abrasion wheel (for key see Figure 1) DIN EN 14617-4:2012-06 EN 14617-4:2012 (E) 7 6 Calibration The apparatus shall be calibrated either after grinding 400 grooves or after every two months, whichever is the lesser and every time there is a new operator, a new abrasive batch or a
36、new abrasion wheel. The abrasive flow rate shall be verified by pouring the abrasive material from a height of approximately 100 mm into a pre-weighed rigid container with a smooth rim, a height of (90 10) mm and a known volume (approximately 1 litre). As the container fills, the pourer shall be rai
37、sed so as to approximately maintain the 100 mm fall. When the container is filled, the top shall be struck off level and weighed to determine the mass of abrasive for a known volume, i.e. the density. The abrasive shall then be run through the wearing machine and collected below the abrasion wheel i
38、n a pre-weighed container, the regularity of the corundum flow during the test checked approximately every 100 g/100 revolutions. The apparatus shall be calibrated against a reference sample of “glass float” using the procedure in 8.1 with the counterweight adjusted so that after 150 revolutions of
39、the wheel at a rotation rate of 75 rotations in (60 3) s the length of the groove produced is 31,5 mm 0,5 mm. The counterweight should be increased or decreased to increase or decrease the groove length respectively. The clamping trolley/counterweight assembly should be checked for undue friction. T
40、he groove shall be measured using the procedure in 8.2 to the nearest 0,1 mm, and the three results averaged to give the calibration value. An alternative material, such as fused quartz, may be used for the reference sample if a good correlation is established with a reference sample of “glass float
41、”. At every calibration of the apparatus, the squareness of the sample supports shall be checked. The groove on the reference sample shall be rectangular with a difference between the measured length of the groove at either side not exceeding 0,5 mm. If necessary, check that: the sample has been hel
42、d perpendicular to the wheel; the clamping trolley and the flow guidance slot are parallel to the wheel axle; the flow of abrasive is even across the slot; the friction in the trolley/counterweight assembly is not excessive. 7 Test specimen preparation 7.1 Sampling Sampling is not the responsibility
43、 of the test laboratory, unless otherwise agreed. It shall be appropriately assigned to the agglomerated stone consignment. Whenever possible, the random sampling method shall be used. Test specimens shall be, however, representative of the agglomerated stone sample: they shall be taken from manufac
44、tured slabs incorporating the upper face of the sample and cut to the proper size for the measuring apparatus (minimum size 100 mm 70 mm). At least six specimens shall be selected from a homogeneous batch consisting of the same material and geometric shape. 7.2 Specimens preparation The test specime
45、n shall be clean and dry. The upper face, which shall be tested, shall be flat within a tolerance of 1 mm and measured according to EN 13373 in two perpendicular directions over 100 mm. DIN EN 14617-4:2012-06 EN 14617-4:2012 (E) 8 If the upper face has a rough texture or overcomes the allowed tolera
46、nce, it shall be lightly ground to provide a smooth, flat surface that will fulfil the allowed tolerance. Immediately before testing, the surface to be tested shall be cleaned with a stiff brush to remove any dust or grit and then covered with a surface dye to facilitate measuring the groove (e.g. p
47、ainting with a permanent marker pen). 8 Procedure 8.1 Test method Fill the storage hopper with dry corundum (maximum moisture content 1,0 wt. %). Remove the clamping trolley from the abrasion wheel. Position the specimen on it so that it lies tangent to the rotating disk and so that the groove produ
48、ced shall be at least 15 mm from any edge of the specimen. Fix the specimen on a wedge to let the abrasive flow pass under it. Place the corundum collector beneath the abrasion wheel. Bring the specimen into contact with the abrasion wheel. Open the control valve and simultaneously start the motor so that the abrasion wheel attains a rotation rate of 75 rotations in (60 3) s. Visually check the regulari
