BS ISO 6106-2013 en_9208 Abrasive products Checking the grain size of superabrasives《磨料制品.超级磨料的磨料粒度检验》.pdf

1、raising standards worldwide NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BSI Standards Publication BS ISO 6106:2013 Abrasive products Checking the grain size of superabrasivesBS ISO 6106:2013 BRITISH STANDARD National foreword This British Standard is the UK implementation

2、of ISO 6106:2013. It supersedes BS ISO 6106:2005 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee MTE/13, Grinding wheels, abrasive tools, paper and cloths, and powders. A list of organizations represented on this committee can be obtained on request t

3、o its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2013. Published by BSI Standards Limited 2013 ISBN 978 0 580 70618 9 ICS 25.100.70 Compliance with a British

4、Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2013. Amendments issued since publication Date Text affectedBS ISO 6106:2013 ISO 2013 Abrasive products Checking the grain size o

5、f superabrasives Produits abrasifs Vrification de la dimension des grains de superabrasifs INTERNATIONAL STANDARD ISO 6106 Third edition 2013-04-15 Reference number ISO 6106:2013(E)BS ISO 6106:2013ISO 6106:2013(E)ii ISO 2013 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2013 All rights reserv

6、ed. 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 posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO

7、at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in SwitzerlandBS ISO 6106:2013ISO 6106:2013(E) ISO 2013 All rights reserved

8、iii Contents Page Foreword iv 1 Scope . 1 2 Normative references 1 3 T erms and definitions . 1 4 Apparatus . 1 4.1 Sieving machine . 1 4.2 Sieves . 1 4.3 Sampling the batch 2 4.4 Balance . 2 4.5 Timer . 2 5 Test conditions . 3 6 Test sieving . 3 6.1 Sampling . 3 6.2 Preparation for sieving 3 6.3 Si

9、eving procedure . 3 7 Evaluation 3 7.1 Weighing sieved fractions 3 7.2 Calculation of results . 3 8 Designation and grading limits . 4 8.1 General . 4 8.2 Grain sizes . 4 8.3 Designation 4 9 Example showing the use of Table 2. 4 Annex A (normative) Adaptors for 75 mm sieves . 7 Bibliography 9BS ISO

10、6106:2013ISO 6106:2013(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested

11、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-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commi

12、ssion (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technica

13、l committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shal

14、l not be held responsible for identifying any or all such patent rights. ISO 6106 was prepared by Technical Committee ISO/TC 29, Small tools, Subcommittee SC 5, Grinding wheels and abrasives. This third edition cancels and replaces the second edition (ISO 6106:2005), which has been technically revis

15、ed. Significant changes against the previous edition are the following: a) the English title has been editorially improved; b) the requirements for the sampling techniques in 4.3 have been specified in more detail; c) there has been a minor technical change in the requirements for the sieving proced

16、ure in 6.3; d) an editorial error in Table 2 and Table 3 was corrected; e) in Table 2, smaller grain designations, i.e. 39 and 33, have been included; f) in Table 3, larger grain designations, i.e. 302, 357 and 712, have been included; g) in Table 2, undersize limiting sieves have been changed for g

17、rain designations 46 and 54.iv ISO 2013 All rights reservedBS ISO 6106:2013INTERNATIONAL ST ANDARD ISO 6106:2013(E) Abrasive products Checking the grain size of superabrasives 1 Scope This International Standard specifies a method for determining or checking the grain size of superabrasives (diamond

18、 or cubic boron nitride) as used for the manufacture of industrial products, such as grinding wheels and saws. It is applicable to grain size designations as defined in Tables 2 and 3. This International Standard describes the grain size designations, the size limits, the sieves for use in determini

19、ng them and the procedure to be adopted for checking the grain size exclusive of any coating. 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, only the edition cited appli

20、es. 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 T erms a nd definiti ons For the purposes of this document, the following terms and definitions apply. 3.1 grai

21、n product whose size is defined by sieving 3.2 grain size designated on-size fraction located between the upper and a lower control sieve as specified Note 1 to entry: The grain may include oversize and undersize factors as specified. 4 Apparatus 4.1 Sieving machine The test shall only be carried ou

22、t with test-sieving machines giving reproducible and comparable results, e.g. test-sieving machines in accordance with ISO 9284. 4.2 Sieves Electroformed sieves with standard 200 mm or 75 mm diameter stainless frame nested sieves, half- height (nominal 25 mm) shall be used. A cover and pan are requi

23、red. The precision electroformed sieves with square apertures, which shall be used in the size checking procedure described in this International Standard, shall have a supporting grid of 2,2 lines per centimetre bonded to the top surface of the sieve. Unless this is done, the superabrasive slides o

24、ver the smooth top surface of the sieve and sieving efficiency is drastically reduced. It is the users responsibility to ensure continuous compliance of the test sieve to the aperture sizes which shall be in accordance with Table 1. ISO 2013 All rights reserved 1BS ISO 6106:2013ISO 6106:2013(E) Tabl

25、e 1 Aperture sizes and ruling lines of electroformed sieves Aperture size Ruling line Aperture size Ruling line m cm m cm 1 830 4,97 227 30,3 1 530 5,8 213 30,3 1 280 6,5 197 35,8 1 080 7,9 181 35,8 915 8,5 165 39,4 850 9,2 151 43,7 770 10,9 139 46,3 710 11,8 127 49,2 645 12,2 116 49,2 600 13,4 107

26、59,1 541 15,0 97 65,6 505 15,7 90 65,6 455 16,4 85 71,6 425 17,9 75 78,7 384 18,7 65 78,7 360 20,3 57 87, 5 322 21,9 49 98,4 302 24,6 41 98,4 271 26,2 32 98,4 255 26,2 28 98,4 4.3 Sampling the batch Appropriate sampling techniques shall be used to ensure that the sample taken is representative of th

27、e batch tested. C A U T I O N C a r e sh o u l d b e t a k e n n o t t o p o u r o r s c o o p s a m p l e t h e m a t e r i a l w i t h o u t f i r s t e n s u r i n g t h a t t h e m a t e r i a l i s t h o r o u g h l y b l e n d e d . S a m p l e s p l i t t e r s l i k e r i f f l i n g m a y b

28、 e u s e d f o r s m a l l samples, but this might not always be viable for very large batches as the entire would need to be r i f f l e d ( n u m e r o u s t i m e s ) b e f o r e t h e r e q u i r e d s a m p l e s i z e i s o b t a i n e d . 4.4 Balance A laboratory balance shall be used which h

29、as a precision of at least 0,01 g if using 200 mm sieves or at least 0,001 g if using 75 mm sieves. 4.5 Timer A timer with an accuracy of 1 % in 15 min shall be used.2 ISO 2013 All rights reservedBS ISO 6106:2013ISO 6106:2013(E) 5 Test conditions The test shall be performed under the following condi

30、tions: 6 Test sieving 6.1 Sampling The material under test should be blended and divided utilizing a sample splitter (4.3) so as to obtain a representative sample. The resulting sample shall be spread out on a pan and allowed to acclimatize at a relative humidity and temperature as specified in Clau

31、se 5. The mass of the sample, measured with the precision specified in 4.4, shall fall within the required range indicated in Tables 2 and 3. 6.2 Preparation for sieving Assemble the desired stack of sieves (4.2) in the order of aperture sizes, with the coarsest sieve on top and with a receiver pan

32、on the bottom. Pour the test sample on to the top sieve and place a lid over it. Place the entire unit into the sieving machine (4.1). The sieve stack shall be free to rotate during the sieving cycle; otherwise, incomplete sieving and erratic results can occur. To facilitate rotation, maintain a cle

33、arance of 3 mm between the sieve stack lid and head yoke of the machine, and ensure that the receiver spring clip does not bind on the bottom pan. Adaptors for 75 mm sieves are specified in Annex A. 6.3 Sieving procedure Set the timer (4.5) controlling the sieve shaker to 15 min and turn on the shak

34、er. At the completion of the cycle, remove the stack of sieves from the shaker. Beginning with the top (coarsest) sieve, empty the portion of the superabrasive retained on to a clean piece of glossy paper or another appropriate container and tap the frame lightly to aid particle removal. This proced

35、ure should be repeated with each subsequent sieve, care being taken not to damage the sieves. Electroformed sieves should not require brushing, but should be cleaned periodically by ultrasonic methods. 7 Evaluation 7.1 Weighing sieved fractions Oversize, on-size and undersize shall be weighed to the

36、 precision specified in 4.4. If the sum of the masses of all fractions is less than 99 % of the original mass, this procedure shall be repeated on a new sample. 7.2 Calculation of results Calculate the percentage retained on each sieve and the pan, relative to the cumulative final mass of the sample

37、. ISO 2013 All rights reserved 3BS ISO 6106:2013ISO 6106:2013(E) 8 Designation and grading limits 8.1 General The standard grain size designation and allowable limits for each size of superabrasive labelled, designated or otherwise represented as complying with this International Standard are given

38、in Tables 2 and 3 in accordance with Clauses 4 to 6. 8.2 Grain sizes Tables 2 and 3 present the ISO designations of the superabrasive grain sizes together with the allowable limits for the particle size distribution of each grain size. The numerical designation in Tables 2 and 3 are based upon the r

39、equirements specified in Table 1. 8.3 Designation Superabrasives conforming to this International Standard shall be designated by a) “Superabrasives”, b) reference to this International Standard, i.e. ISO 6106, c) the type of superabrasive, D (diamond) or B (cubic boron nitride), and d) the ISO grai

40、n designation according to Table 2 or 3. EXAMPLE Superabrasive with D and grain size 151 is designated as follows:Superabrasive ISO 6106 - D 151 9 Example showing the use of Table 2 The following is an example of the use of this International Standard. Consider ISO size D 151. At least 99,9 % of sup

41、erabrasive shall pass through the oversize limiting sieve, in this case, 227 m. All superabrasive may pass through the upper control sieve (in this case, the 165 m sieve), but not more than 7 % is permitted to be retained on it. It is permissible to have 100 % pass through the upper control sieve an

42、d remain on the lower control sieve (127 m), the requirement being that the grain passing through the upper control sieve, and retained on the lower control sieve shall be at least 90 %. No more than 7 % shall pass through the lower control sieve, and not more than 0,5 % is permitted to pass through

43、 the undersize limiting sieve (90 m). As further clarification, if 100 % of a superabrasive claimed to be D 151 passes both the oversize limiting and upper control sieves, and 90 % is retained on the lower control sieve, the superabrasive shall be rejected because 10 % of the superabrasive passing t

44、hrough the lower nominal sieve exceeds the maximum 7 % allowed for this grain size.4 ISO 2013 All rights reservedBS ISO 6106:2013ISO 6106:2013(E)Table 2 Narrow range grain sizes ISO agrain designation E q u i v a l e n t m e s h sizes b Test mass according to 6.1 Sieve through which 99,9 % has to pa

45、ss (over- size limiting sieve) Upper con- trol sieve Max. on sieve Lower con- trol sieve Min. on sieve Max. through sieve 0,5 % max. through undersize limiting sieve for 200 mm sieves for 75 mm sieves g g m m % m % % m 1 181 16/18 80 to 120 9,6 to 14,5 1 830 1 280 5 1 010 93 5 710 1 001 18/20 1 530

46、1 080 850 600 851 20/25 80 to 120 9,6 to 14,5 1 280 915 5 710 93 5 505 711 25/30 1 080 770 600 425 601 30/35 80 to 120 9,6 to 14,5 915 645 5 505 93 5 360 501 35/40 80 to 120 9,6 to 14,5 770 541 5 425 93 5 302 426 40/45 645 455 360 255 356 45/50 80 to 120 9,6 to 14,5 541 384 5 302 93 5 213 301 50/60

47、455 322 255 181 251 60/70 80 to 120 9,6 to 14,5 384 271 5 213 93 5 151 213 70/80 322 227 181 127 181 80/100 40 to 60 4,8 to 7,2 271 197 7 151 90 7 107 151 100/120 227 165 127 90 126 120/140 197 139 107 75 107 140/170 40 to 60 4,8 to 7,2 165 116 8 90 88 8 65 91 170/200 139 97 75 57 76 200/230 20 to 3

48、0 2,4 to 3,6 116 85 65 49 64 230/270 97 75 57 41 54 270/325 85 65 12 49 83 12 32 46 325/400 75 57 41 28 39 400/500 20 to 30 2,4 to 3,6 65 49 15 32 80 15 25 33 500/600 20 to 30 2,4 to 3,6 57 41 15 28 80 15 20 aTo add D or B depending on the abrasive type (D for diamond) or (B for cubic boron nitride)

49、; see 8.3. bThese mesh size designations are not part of this International Standard. They are shown for easy reference only.The manufacturers of superabrasive grain shall ensure that the size distribution within any of their grain products is maintained at a reasonably consistent proportional degree. ISO 2013 All rights reserved 5BS ISO 6106:2013ISO 6106:2013(E)Table 3 Wide range grain sizes ISO agrain designation E q u i v a l