1、July 2015 Translation by DIN-Sprachendienst.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 19
2、.120!%D b) the standard has been editorially revised. Previous editions DIN ISO 3310-2: 1992-02, 2001-093IDINISO3310-2:2015-07 This page is intentionally blank 4IDIN ISO 3310-2:2015-07 IntroductionAs the accuracy of test sieving depends on the dimensional accuracy of the test sieve openings, it is c
3、onsidered necessary in this part of ISO 3310 to keep tolerances on the holes in perforated metal plate as close as possible as the manufacturing process allows.Requirements other than tolerances on the holes, such as requirements for the pitch of holes, any corner radii, and plate thickness, have no
4、t been limited more closely than necessary, since the influence of these criteria on test sieving is of minor importance, and excessively strict requirements may make manufacturing unnecessarily difficult.5IDINISO3310-2:2015-07Test sieves Technical requirements and testing Part 2: Test sieves of per
5、forated metal plate1 ScopeThis part of ISO 3310 specifies the technical requirements and corresponding test methods for test sieves of perforated metal plate.It applies to test sieves having round holes, with sizes from 125 mm down to 1 mm, or square holes, with sizes from 125 mm down to 4 mm,in acc
6、ordance with ISO 565.2 Normative referencesThe 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 applies. For dated references, only the edition cited applies. For undated refe
7、rences, the latest edition of the referenced document (including any amendments) applies.ISO 565, Test sieves Metal wire cloth, perforated metal plate and electroformed sheet Nominal sizes of openingsISO 2395, Test sieves and test sieving Vocabulary3 Terms and definitionsFor the purposes of this doc
8、ument, the terms and definitions given in ISO 2395 apply.4 DesignationTest sieves of perforated metal plate shall be designated by the nominal size of the holes, expressed in millimetres, and by the shape of the holes.5 Perforated metal plate5.1 RequirementsThe tolerances on the individual size of h
9、oles and the selection of pitches shall be as specified in Table 1.5.1.1 Tolerances on individual size of holesThe tolerances on the individual size of holes as given in Table 1, Column 4, apply to the widths of the mid-sections of square holes and to the diameters of round holes.6IDIN ISO 3310-2:20
10、15-07 5.1.2 Pitch, p5.1.2.1 The pitches given in Table 1 apply to both round and square holes.5.1.2.2 The nominal pitches given in Table 1, Column 5, are preferred.The nominal pitches should be within the limits of pmaxand pminas given in Table 1, Columns 6 and 7. These are defined by a permissible
11、range of choice of approximately 15 % of the value calculated from the nominal size of holes and the preferred pitch.Table 1 Tolerances on individual size of holes and selection of pitchesDimensions in millimetresNominal sizes of holes, w aTolerances on individual size of hole Pitch, pPrincipal size
12、s Supplementary sizes Preferred sizes Permissible range of choiceR 20/3 R 20 R 40/3 pnompmaxpmin(1) (2) (3) (4) (5) (6) (7)125 125 125 1 160 184 143112 0,95 140 161 126106 0,9 132 152 119100 0,85 125 144 11390 90 90 0,8 112 129 10180 0,7 100 115 9075 0,7 95 109 8571 0,65 90 103 8163 63 63 0,6 80 92
13、7256 0,55 71 82 63,553 0,55 67 77 6050 0,55 63 72,5 56,545 45 45 0,5 56 64,5 50,540 0,45 50 57,5 4537,5 0,45 47,5 54,6 42,535,5 0,4 45 51,7 40,531,5 31,5 31,5 0,4 40 46 3628 0,35 35,5 40,8 31,826,5 0,35 33,5 38,5 3025 0,35 31,5 36 28,522,4 22,4 22,4 0,3 28 32,2 25,520 0,3 25 29 22,519 0,29 23,6 27,1
14、 21,318 0,28 22,4 25,8 20,216 16 16 0,27 20 23 1814 0,26 18 20,7 1613,2 0,25 17 19,5 15,112,5 0,24 16 18,4 14,3aIn accordance with ISO 565, the lower limit of the nominal size of square holes is 4 mm.7IDINISO3310-2:2015-07Nominal sizes of holes, w aTolerances on individual size of hole Pitch, pPrinc
15、ipal sizes Supplementary sizes Preferred sizes Permissible range of choiceR 20/3 R 20 R 40/3 pnompmaxpmin(1) (2) (3) (4) (5) (6) (7)11,2 11,2 11,2 0,23 14 16,1 12,610 0,21 12,6 14,5 11,39,5 0,21 12,1 13,8 10,29 0,2 11,6 13,3 9,88 8 8 0,19 10,4 12 9,27,1 0,18 9,4 10,8 86,7 0,17 8,9 10,2 7,56,3 0,17 8
16、,5 9,8 7,25,6 5,6 5,6 0,15 7,7 8,9 6,65 0,14 6,9 7,9 5,94,75 0,14 6,6 7,6 5,64,5 0,14 6,3 7,2 5,34 4 4 0,13 5,8 6,7 4,93,55 0,12 5,2 6 4,43,35 0,11 5 5,7 4,23,15 0,11 4,7 5,3 3,92,8 2,8 2,8 0,11 4,35 5 3,62,5 0,11 3,9 4,5 3,32,36 0,11 3,75 4,3 3,22,24 0,1 3,6 4,1 3,12 2 2 0,09 3,3 3,8 2,81,8 0,08 3,
17、1 3,6 2,71,7 0,08 3 3,4 2,51,6 0,08 2,75 3,2 2,31,4 1,4 1,4 0,08 2,6 3 2,21,25 0,08 2,45 2,9 2,11,18 0,07 2,4 2,7 21,12 0,07 2,22 2,5 1,81 1 1 0,07 2 2,3 1,7aIn accordance with ISO 565, the lower limit of the nominal size of square holes is 4 mm.5.1.3 Plate thicknessThe nominal thicknesses given in
18、Table 2, Column 2, are preferred. The nominal thickness may, however, depart from these values within the permissible range of choice given in Table 2, Columns 3 and 4.Table 1 (continued)8IDIN ISO 3310-2:2015-07 Table 2 Plate thicknessesDimensions in millimetresNominal sizes of holes wPlate thicknes
19、sPreferred thicknessPermissible range of choicemax. min.(1) (2) (3) (4)125 to 50 3 3,5 245 to 16 2 2,5 1,514 to 8 1,5 2 17,1 to 1,7 1 1,5 0,81,6 to 1,0 0,6 1 0,55.1.4 Arrangement of holesRound and square holes in perforated metal plates in test sieves (see Figure 1) shall be arranged in straight or
20、staggered rows.Sieves with hole sizes 4 mm and above shall have an unperforated margin. Partial holes are not permitted (see Figure 2). The unperforated margin is influenced by the hole size, pitch, and manufacturing method, resulting in different margin widths.The corners of square holes may be rou
21、nded with a maximum permissible radius of rounding given by the formularwmax=015, (1)wherermaxis the maximum radius of rounding, in millimetres;w is the nominal size of the hole, in millimetres.a) Round holes b) Square holesFigure 1 Arrangement of square and round holes in test sieves5.1.5 Material
22、of platePlated steel is usually supplied. At the lower end of the aperture range, brass may be used. The purchaser should state specific requirements in the enquiry, such as stainless steel.9IDINISO3310-2:2015-075.2 Test methodsEvery hole in the perforated metal plate in a test sieve shall have the
23、same probability of being inspected for compliance with the requirements listed in 5.1, Table 1, Column 4.Measure the hole sizes using appropriate equipment with a precision of reading of 20 m or 1/4 of the tolerance concerned (Table 1, Column 4), whichever is greater.Test 1 Visual examination of ge
24、neral conditionView the perforated metal plate against a uniformly illuminated background. If obvious deviations from uniformity of appearance are found, for example partial holes (4 mm and larger), the sieve is unacceptable.Test 2 Measurement of size of hole and pitchMeasure the hole size on the ce
25、ntre lines of square holes and on the diameter of round holes according to Table 3.Table 3 Minimum number of holes to be measured in a 200 mm diameter test sieveNominal sizes of holes w mmProcess for compliance and inspectionProcess for calibration(1) (2) (3)125 to 22,4All (max. 25 in larger sieves
26、with diameter more than 200 mm)All (max. 50 in larger sieves with diameter more than 200 mm)20 to 4 2 15 2 303,55 to 2,24 2 20 2 402 to 1,6 2 25 2 501,4 to 1 2 40 2 80Measure the dimensions of the holes and the pitches, p, over any selected area of the plate, along two straight lines and different d
27、irections, each line being at least 150 mm in length and including at least eight holes in each direction.If the dimension of any hole exceeds the tolerance, the sieve is unacceptable.If the minimum number of holes prescribed for examination is not available in the plate, check all the holes in the
28、sieve.Figure 2 Example of hole configuration for measurement of up to 20 holes10IDIN ISO 3310-2:2015-07 5.3 Documentation for sieve conformity5.3.1 Test sieve record cardThe manufacturer may provide a record card (see Annex A) with each new sieve, confirming that it has been inspected by the procedu
29、res described in 5.2. This card can be used subsequently to record the results of periodic tests and performance checks.5.3.2 CertificatesAll certificates shall mention the manufacturers sieve serial number, date, and name or signature.5.3.2.1 Compliance certificateIf no specific request has been ma
30、de, the manufacturer shall provide a certificate of compliance stating that the test sieve has been inspected in accordance with 5.2 and found to be in compliance with this part of ISO 3310. This certificate may be combined with the test sieve record card (see 5.3.1 and Annex A).5.3.2.2 Inspection c
31、ertificateThe manufacturer may provide, at the specific request of the purchaser, a test sieve inspection certificate stating the test results for the average hole size. See Table 3, Column 2.5.3.2.3 Calibration certificateThe manufacturer may provide, at the specific request of the purchaser, a tes
32、t sieve calibration certificate stating the results of their assessment. Results shall be stated for the number of holes measured, the average hole size, the plate thickness, and pitch. See Table 3, Column 3.6 Test sieve framesIt is recommended that the 200 mm round metal frame be used as far as pos
33、sible.Larger frames may be appropriate for larger quantities of material to be sieved and for hole sizes larger than 25 mm.The shape and size of the test sieve frame have little effect on the results of the sieving operation (see ISO 2591-1). Sieves complete with a lid and receiver in a set shall be
34、 assembled so that escape of sample during a test sieving operation is prevented.The frames shall be smoothly finished and they shall nest easily with other sieves, lids, and receivers of the same nominal frame size.The seal of the perforated metal plate with the frame shall be so constructed as to
35、prevent lodging of material to be sieved (see Figure 3).The tolerances on test sieves of diameter 200 mm shall comply with Table 4.11IDINISO3310-2:2015-07Key1 perforated metal plate2 main part3 base4 frameFigure 3 Cross section of test sieve (diagrammatic)Table 4 Tolerances on 200 mm diameter test s
36、ievesDimensions in millimetresTest sieve nominal frame sizeDiameter or length of effective sieving surfaceApproximate depthD1D2min. max. H1200060+ ,2000701,185 200 50NOTE The tolerances on D1and D2should also apply to other nominal frame sizes, such as 100 mm, 300 mm, and 400 mm.7 Marking of test si
37、evesA metal label permanently attached to the frame shall give the following information:a) the nominal size and shape of holes;b) a reference to the standard(s) with which the test sieve is claimed to comply;c) the material of the perforated metal plate and of the frame;d) the name of the party (ma
38、nufacturer or vendor) that is responsible for the sieve;e) the manufacturers test sieve serial number.12IDIN ISO 3310-2:2015-07 Annex A (informative) Test sieve record cardTable A.1 Example of a test sieve record card for a perforated metal plate sieveStandard: ISO 3310-2TEST SIEVE RECORD CARD Date:
39、 1999-05-05 Signed:Sieve serial No.: 987654Nominal size of holes Certificate 5.3.2Compliance 1Certificate No.:mm 100Round Inspection 2 Square Calibration 3 (Mark 1, 2, or 3)DateTimes usedVisual surveyTolerance on individual size of holes1998-05-05New Yes Within tolerance YesNOTE It is the users resp
40、onsibility to ensure that a used sieve is re-examined according to the circumstances and with a frequency appropriate to the degree of use that the sieve has undergone.The sizes and tolerances in this part of ISO 3310 apply to new test sieves. With continued use, however, sieves will wear and it is
41、necessary that all sieves should be examined visually for damage or blinding before each use. Sieves should also be checked periodically, depending on the frequency of use.One method for checking consists of remeasuring the sieve apertures using the procedures described in 5.2. If the user is not pr
42、epared to make such periodic reinspections, recourse may be made by the sieve manufacturer/vendor or by specialists in testing.Alternatively, sieves can be checked for performance by sieving a known material and comparing the amount of residue on the sieve with that expected.Known material can be ei
43、thera) reference material with an agreed particle size distribution, orb) material that has also been sieved on a set of master test sieves reserved solely for this checking operation.Further guidance on checking procedures is provided in ISO 2591-1:1988,16.2.13IDINISO3310-2:2015-07Bibliography1 ISO 2591-1:1988, Test sieving Part 1: Methods using test sieves of woven wire cloth and perforated metal plate.2 EN 10204:2004, Metallic materials Types of inspection documents14IDIN ISO 3310-2:2015-07
