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1、BRITISH STANDARD BS ISO 6106:2005 Abrasive products Checking the grit size of superabrasives ICS 25.100.70 ? Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 08:43:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 6106:2005 This British Standard was published under the authority of the Stan
2、dards Policy and Strategy Committee on 10 November 2005 BSI 10 November 2005 ISBN 0 580 46229 3 National foreword This British Standard reproduces verbatim ISO 6106:2005 and implements it as the UK national standard. It supersedes BS 5851:1980 which is withdrawn. The UK participation in its preparat
3、ion was entrusted to Technical Committee MTE/13, Grinding wheels, abrasive tools, paper, cloths and powders, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement inte
4、rnational publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to incl
5、ude all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enqui
6、ries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to iv, pages 1 to 10
7、, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 08:43:15 GMT+00:00 2006, Uncontrolled Copy, (c) B
8、SI Reference number ISO 6106:2005(E) INTERNATIONAL STANDARD ISO 6106 Second edition 2005-05-15 Abrasive products Checking the grit size of superabrasives Produits abrasifs Vrification de la dimension des grains des superabrasifs BS ISO 6106:2005 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26
9、 08:43:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 08:43:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iii Contents Page Forewordiv 1 Scope1 2 Normative references .1 3 Terms and definitions.1 4 Apparatus.2 4.1 Sieving machine2 4.2 Sieves.2
10、 4.3 Sample splitter 3 4.4 Balance.3 4.5 Timer.3 5 Test conditions3 6 Test sieving .3 6.1 Sampling3 6.2 Preparation for sieving.3 6.3 Sieving procedure.3 7 Evaluation4 7.1 Weighing sieved fractions4 7.2 Calculation of results4 8 Designation and grading limits .4 8.1 General.4 8.2 Grit sizes4 8.3 Des
11、ignation4 9 Example showing the use of Table 25 Annex A (normative) Adaptors for 75 mm sieves.8 Bibliography .10 BS ISO 6106:2005 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 08:43:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv Foreword ISO (the International Organization for Standardiza
12、tion) 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 in a subject for which a technical committee has been established has the right to be
13、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 Commission (IEC) on all matters of electrotechnical standardization. International Standard
14、s 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 technical committees are circulated to the member bodies for voting. Publication as an Interna
15、tional 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 shall not be held responsible for identifying any or all such patent rights. ISO 6106 was
16、prepared by Technical Committee ISO/TC 29, Small tools, Subcommittee SC 5, Grinding wheels and abrasives. This second edition cancels and replaces the first edition (ISO 6106:1979), which has been technically revised. BS ISO 6106:2005 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 08:43:15 G
17、MT+00:00 2006, Uncontrolled Copy, (c) BSI 1 Abrasive products Checking the grit size of superabrasives 1 Scope This International Standard specifies a method for determining or checking the grit size of superabrasives (diamond or cubic boron nitride) as used for the manufacture of industrial product
18、s such as grinding wheels and saws. It is applicable to grit size designations as defined in Tables 2 and 3. This International Standard describes the grit size designations, the size limits, the sieves to be used in determining them and the procedure to be adopted for checking the grit size exclusi
19、ve of any coating. 2 Normative references The following referenced documents are indispensable for the 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. ISO 554
20、:1976, Standard atmospheres for conditioning and/or testing Specifications 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 grit product whose size is defined by sieving NOTE The smallest grit designation is D or B46. 3.2 grit size designated
21、on-size fraction located between the upper and a lower control sieve as specified in this International Standard NOTE The grit may include oversize and undersize factors as specified. BS ISO 6106:2005 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 08:43:15 GMT+00:00 2006, Uncontrolled Copy,
22、(c) BSI 2 4 Apparatus 4.1 Sieving machine The test shall only be carried out with test sieving machines giving reproducible and comparable results, e.g. RO-TAP1) test sieving machines in accordance with ISO 9284. 4.2 Sieves Electroformed sieves with standard 200 mm to 75 mm diameter stainless frame
23、nested sieves, half-height (nominal 25 mm) shall be used. A cover and pan are required. The precision electroformed sieves with square apertures to be used in the size checking procedure described in this specification must have a supporting grid of 2,2 lines per cm bonded to the top surface of the
24、sieve. Unless this is done, the superabrasive slides over 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 to Table 1. Table 1 Apertur
25、es sizes and ruling lines of electroformed sieves Aperture size Aperture size m Ruling lines/cm m Ruling lines/cm 1 830 4,97 227 30,3 1 520 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 59,1 541
26、 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 37 98,4 255 26,2 32 98,4 1) RO-TAP is an example of a suitable product available commercially. This information is given for the convenience of users of this
27、International Standard and does not constitute an endorsement by ISO of this product. BS ISO 6106:2005 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 08:43:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 3 4.3 Sample splitter A sample splitter which will produce a representative sample shall b
28、e used. 4.4 Balance A laboratory balance shall be used which has 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. 5 Test conditions The test shall be performed under the following condi
29、tions: Temperature: 23 C 2 C Relative humidity: 50 % 5 % in accordance with ISO 554 6 Test sieving 6.1 Sampling The material to be tested should preferably 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
30、pan and allowed to acclimatize at a relative humidity and temperature as specified in Clause 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.
31、2) in the order of aperture sizes with the coarsest sieve on top and with a receiver pan on the bottom. Pour the test sample onto the top sieve and place a lid over it. Place the entire unit into the sieving machine (4.1). The sieve stack must be free to rotate during the sieving cycle, otherwise in
32、complete sieving and erratic results may occur. To facilitate rotation, maintain a clearance 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 pro
33、cedure Set the timer (4.5) controlling the sieve shaker to 15 min and turn on the shaker. 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 onto a clean piece of glossy paper and tap th
34、e frame lightly to aid particle removal. This procedure 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. BS ISO 6106:2005 Licensed Copy: sheffieldun sh
35、effieldun, na, Sun Nov 26 08:43:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 7 Evaluation 7.1 Weighing sieved fractions Oversize, on-size and undersize shall be weighed to the precision specified in 4.4. If the sum of the masses of all fractions is less than 99 % of the original mass, this proced
36、ure 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. 8 Designation and grading limits 8.1 General The standard grit size designation and allowable limits for each size of su
37、perabrasive labelled, designated or otherwise represented as complying with this International Standard are given in Tables 2 and 3 in accordance with Clauses 4 to 6. 8.2 Grit sizes Tables 2 and 3 present the ISO designations of the superabrasive grit sizes together with the allowable limits for the
38、 particle size distribution of each grit size. The numerical designation in Tables 2 and 3 are based upon the requirements specified in Table 1. 8.3 Designation Superabrasives conforming to this International Standard shall be designated by a) “Superabrasives”, b) reference to this International Sta
39、ndard, i.e. ISO 6106, c) the type of superabrasive, D (diamond) or B (cubic boron nitride), and d) the ISO grit designation according to Table 2 or 3. EXAMPLE Superabrasive with D and grit size 151 is designated as follows: Superabrasive ISO 6106 - D 151 BS ISO 6106:2005 Licensed Copy: sheffieldun s
40、heffieldun, na, Sun Nov 26 08:43:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 5 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 superabrasive must pass through the oversize limiting sieve in this
41、 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, and remain on the lower control sieve (127 m), the requirement being tha
42、t the grit passing through the upper control sieve, and retained on the lower control sieve, must 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 the undersize limiting sieve (90 m). As further clarification, if 100
43、% 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 through the lower nominal sieve exceeds the maximum 7 % allowed for this
44、 grit size. BS ISO 6106:2005 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 08:43:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 6 Table 2 Narrow range grit sizes Test weight according to 6.1 for 200 mm sieves for 75 mm sieves Sieve through which 99,9 % must pass (oversize limiting sieve) Upp
45、er control sieve Max. on sieve Lower control sieve Min. on sieve Max. through sieve 0,5 % max. through undersize limiting sieve ISOa grit designation Equivalent mesh sizesb g g m m % m % % m 1 181 16/18 1 830 1 280 1 010 710 1 001 18/20 80 to 120 9,6 to 14,5 1 520 1 080 5 850 93 5 600 851 20/25 1 28
46、0 915 710 505 711 25/30 80 to 120 9,6 to 14,5 1 080 770 5 600 93 5 425 601 30/35 915 645 505 360 502 35/45 80 to 120 9,6 to 14,5 770 541 5 360 93 5 255 501 35/40 770 541 425 302 426 40/45 80 to 120 9,6 to 14,5 645 455 5 360 93 5 255 356 45/50 541 384 302 213 301 50/60 80 to 120 9,6 to 14,5 455 322 5
47、 255 93 5 181 251 60/70 384 271 213 151 213 70/80 80 to 120 9,6 to 14,5 322 227 5 181 93 5 127 181 80/100 271 197 151 107 151 100/120 227 165 127 90 126 120/140 40 to 60 4,8 to 7,2 197 139 7 107 90 7 75 107 140/170 165 116 90 65 91 170/200 40 to 60 4,8 to 7,2 139 97 75 57 76 200/230 116 85 65 49 64
48、230/270 97 75 8 57 88 8 41 54 270/325 85 65 49 37 46 325/400 20 to 30 2,4 to 3,6 75 57 12 41 83 12 32 a To add D or B depending on the abrasive type (D for diamond) or (B for cubic boron nitride), see 8.3. b These mesh size designations are not part of this International Standard. They are shown for
49、 easy reference only. The manufacturers of superabrasive grit shall ensure that the size distribution within any of their grit products is maintained at a reasonably consistent proportional degree. BS ISO 6106:2005 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 08:43:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 7 Table 3 Wide range grit sizes Test weight according to 6.1 for 200 mm sieves for 75 mm sieves Sieve through which 99,9 % must pass (oversize limiting