1、November 2015 English price group 9No 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!%G5“2365718www.din.deD
2、IN ISO 6106Abrasive products Checking the grain size of superabrasives (ISO 6106:2013),English translation of DIN ISO 6106:2015-11Schleifmittel berprfung der Korngren von Diamant oder kubischem Bornitrid (ISO 6106:2013),Englische bersetzung von DIN ISO 6106:2015-11Produits abrasifs Vrification de la
3、 dimension des grains des superabrasifs (ISO 6106:2013),Traduction anglaise de DIN ISO 6106:2015-11SupersedesDIN ISO 6106:2006-03See start of applicationwww.beuth.deDocument comprises 13 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered author
4、itative.11.15 A comma is used as the decimal marker. Contents PageNational foreword 31 Scope . 52 Normative references 53 Terms and definitions . 54 Apparatus . 54.1 Sieving machine . 54.2 Sieves . 54.3 Sampling the batch 64.4 Balance . 64.5 Timer . 65 Test conditions . 76 Test sieving . 76.1 Sampli
5、ng . 76.2 Preparation for sieving 76.3 Sieving procedure . 77 Evaluation 77.1 Weighing sieved fractions 77.2 Calculation of results . 78 Designation and grading limits . 88.1 General . 88.2 Grain sizes . 88.3 Designation 89 Example showing the use of Table 2. 8Annex A (normative) Adaptors for 75 mm
6、sieves . 11Bibliography . 13DIN ISO 6106:2015-11 2National Annex NA (informative) Bibliography4National foreword This document (ISO 6106:2013) has been prepared by Technical Committee ISO/TC 29 “Small tools”, Subcommittee SC 5 “Grinding wheels and abrasives” (Secretariat: DIN, Germany). The responsi
7、ble German body involved in its preparation was DIN-Normenausschuss Werkzeuge und Spannzeuge (DIN Standards Committee Tools and Clamping Devices), Working Committee NA 121-04-06 AA Krnungen. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
8、 rights. DIN shall not be held responsible for identifying any or all such patent rights. The DIN Standard corresponding to the International Standard referred to in this document is as follows: ISO 9284 DIN ISO 9284 Amendments This standard differs from DIN ISO 6106:2006-03 as follows: a) the Engli
9、sh title of the standard 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 procedure in 6.3; d) an editorial error in Table 2 and Table 3 has been co
10、rrected; 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 grain designations 46 and 54. Previous editions DIN 848: 1944-06
11、, 1965-06 DIN 848-1: 1980-03, 1988-03 DIN 848-2: 1980-03, 1988-03 DIN ISO 6106: 2006-03 DIN ISO 6106:2015-11 3 National Annex NA (informative) Bibliography DIN ISO 9284, Abrasive grains - Test-sieving machines DIN ISO 6106:2015-11 4 Abrasive products Checking the grain size of superabrasives1 ScopeT
12、his International Standard specifies a method for determining or checking the grain size of superabrasives (diamond 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.T
13、his International Standard describes the grain size designations, the size limits, the sieves for use in determining them and the procedure to be adopted for checking the grain size exclusive of any coating.2 Normative referencesThe following documents, in whole or in part, are normatively reference
14、d in this document 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.ISO 554, Standard atmospheres for conditioning and/or testing Specifications3 T
15、erms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1grainproduct whose size is defined by sieving3.2grain sizedesignated on-size fraction located between the upper and a lower control sieve as specifiedNote 1 to entry: The grain may include oversize an
16、d undersize factors as specified.4 Apparatus4.1 Sieving machineThe test shall only be carried out with test-sieving machines giving reproducible and comparable results, e.g. test-sieving machines in accordance with ISO 9284.4.2 SievesElectroformed sieves with standard 200 mm or 75 mm diameter stainl
17、ess frame nested sieves, half-height (nominal 25 mm) shall be used. A cover and pan are required. 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 centi
18、metre bonded to the top surface of the 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
19、 accordance with Table 1.DIN ISO 6106:2015-11 5 Table 1 Aperture sizes and ruling lines of electroformed sievesAperture size Ruling line Aperture size Ruling linem cm m cm1 830 4,97 227 30,31 530 5,8 213 30,31 280 6,5 197 35,81 080 7,9 181 35,8915 8,5 165 39,4850 9,2 151 43,7770 10,9 139 46,3710 11,
20、8 127 49,2645 12,2 116 49,2600 13,4 107 59,1541 15,0 97 65,6505 15,7 90 65,6455 16,4 85 71,6425 17,9 75 78,7384 18,7 65 78,7360 20,3 57 87,5322 21,9 49 98,4302 24,6 41 98,4271 26,2 32 98,4255 26,2 28 98,44.3 Sampling the batchAppropriate sampling techniques shall be used to ensure that the sample ta
21、ken is representative of the batch tested.CAUTION Care should be taken not to pour or scoop sample the material without first ensuring that the material is thoroughly blended. Sample splitters like riffling may be used for small samples, but this might not always be viable for very large batches as
22、the entire would need to be riffled (numerous times) before the required sample size is obtained.4.4 BalanceA 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 TimerA timer with an accuracy of 1 % in 15 min
23、shall be used.DIN ISO 6106:2015-11 6 5 Test conditionsThe test shall be performed under the following conditions:Temperature: 23C 2CRelative humidity: 505in ac % %ccordance with ISO554. 6 Test sieving6.1 SamplingThe material under test should be blended and divided utilizing a sample splitter (4.3)
24、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 Clause 5.The mass of the sample, measured with the precision specified in 4.4, shall fall within the required range indicated in
25、 Tables 2 and 3.6.2 Preparation for sievingAssemble the desired stack of sieves (4.2) in the order of aperture sizes, with the coarsest sieve on top and with a receiver pan on the bottom. Pour the test sample on to the top sieve and place a lid over it. Place the entire unit into the sieving machine
26、 (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 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
27、 on the bottom pan.Adaptors for 75 mm sieves are specified in Annex A.6.3 Sieving procedureSet 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
28、 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 procedure should be repeated with each subsequent sieve, care being taken not to damage the sieves. Electroformed sieves should not requ
29、ire brushing, but should be cleaned periodically by ultrasonic methods.7 Evaluation7.1 Weighing sieved fractionsOversize, 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 procedure shall be
30、 repeated on a new sample.7.2 Calculation of resultsCalculate the percentage retained on each sieve and the pan, relative to the cumulative final mass of the sample.DIN ISO 6106:2015-11 7 8 Designation and grading limits8.1 GeneralThe standard grain size designation and allowable limits for each siz
31、e of superabrasive 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 Grain sizesTables 2 and 3 present the ISO designations of the superabrasive grain sizes together with the allowable limits
32、for the particle size distribution of each grain size. The numerical designation in Tables 2 and 3 are based upon the requirements specified in Table 1.8.3 DesignationSuperabrasives conforming to this International Standard shall be designated bya) “Superabrasives”,b) reference to this International
33、 Standard, i.e. ISO 6106,c) the type of superabrasive, D (diamond) or B (cubic boron nitride), andd) the ISO grain designation according to Table 2 or 3.EXAMPLE Superabrasive with D and grain size 151 is designated as follows:Superabrasive ISO 6106 - D 1519 Example showing the use of Table 2The foll
34、owing is an example of the use of this International Standard. Consider ISO size D 151. At least 99,9 % of superabrasive 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
35、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 that the grain passing through the upper control sieve, and retained on the lower control sieve shall be at least 90 %. No
36、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 % of a superabrasive claimed to be D 151 passes both the oversize limiting and upper control sieves, and 90 % is retain
37、ed 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 grain size.DIN ISO 6106:2015-11 8 Table 2 Narrow range grain sizesISOagrain designationEquivalent mesh sizesbTest mass
38、 according to 6.1Sieve through which 99,9 % has to pass (over-size limiting sieve)Upper con-trol sieveMax. on sieveLower con-trol sieveMin. on sieveMax. through sieve0,5 % max. through undersize limiting sievefor 200 mm sievesfor 75 mm sievesg g m m % m % % m1 181 16/1880 to 120 9,6 to 14,51 830 1 2
39、8051 01093 57101 001 18/20 1 530 1 080 850 600851 20/2580 to 120 9,6 to 14,51 280 915571093 5505711 25/30 1 080 770 600 425601 30/35 80 to 120 9,6 to 14,5 915 645 5 505 93 5 360501 35/4080 to 120 9,6 to 14,5770 541542593 5302426 40/45 645 455 360 255356 45/5080 to 120 9,6 to 14,5541 384530293 521330
40、1 50/60 455 322 255 181251 60/7080 to 120 9,6 to 14,5384 271521393 5151213 70/80 322 227 181 127181 80/10040 to 60 4,8 to 7,2271 197715190 7107151 100/120 227 165 127 90126 120/140 197 139 107 75107 140/17040 to 60 4,8 to 7,2165 11689088 86591 170/200 139 97 75 5776 200/23020 to 30 2,4 to 3,6116 85
41、65 4964 230/270 97 75 57 4154 270/325 85 65124983 123246 325/400 75 57 41 2839 400/500 20 to 30 2,4 to 3,6 65 49 15 32 80 15 2533 500/600 20 to 30 2,4 to 3,6 57 41 15 28 80 15 20aTo add D or B depending on the abrasive type (D for diamond) or (B for cubic boron nitride); see 8.3.bThese mesh size des
42、ignations 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.D I N I S O 6106 : 201 5 - 11
43、 9Table 3 Wide range grain sizesISOagrain designationEquivalent mesh sizesaTest mass according to 6.1Sieve through which 99,9 % has to pass (over-size limiting sieve)Upper con-trol sieveMax. on sieveLower con-trol sieveMin. on sieveMax. through sieve0,5 % max. through undersize limiting sievefor 200
44、 mm sievesfor 75 mm sievesg g m m % m % % m1 182 16/2080 to 120 9,6 to 14,51 830 1 280585093 5600852 20/30 1 280 915 600 425712 25/35 1 080 770 505 360602 30/40 915 645 425 302502 35/45 770 541 360 255427 40/50 645 455 302 213357 45/60 541 384 255 181302 50/70 455 322 213 151252 60/80 384 271 181 12
45、7aSee Table 2.D I N I S O 6106 : 201 5 - 11 10Annex A (normative) Adaptors for 75 mm sievesA.1 GeneralWhere 75 mm sieves are used instead of those of 200 mm, adaptors in accordance with A.2 and A.3 shall be used.A.2 Cover plate adaptorThis consists, essentially, of a spacer ring made of 6 mm-thick w
46、ood, plastic or reinforced plastics material, fitted beneath the standard cover plate of the sieving machine, such that the centre of the ring accommodates the 75 mm cover, while still allowing the stack of sieves some freedom to move, as required by 6.2. See Figure A.1.Dimensions in millimetresaHol
47、es to suit.Figure A.1 Cover plate adaptorA.3 Bottom plate adaptorThis consists, essentially, of a light, U-shaped spacing piece made of 6 mm-thick wood, plastic or reinforced plastics material designed to hold the stack of 75 mm sieves in an axial position on the sieving machine, while at the same time permitting the stack of sieves to slide into position. See Figure A.2.DIN ISO 6106:2015-11 11 Dimensions in millimetresaHoles to suit.Figure A.2 Bottom plate adaptorDIN ISO 6106:2015-11 12
