1、Industrial wire screens and woven wire cloth - Guide to the choice of aperture size and wire diameter combinations I IS0 4783-1 Part 1 : Generalities (IS0 4783-1 : 1989) DIN - ICs 19.120 Supersedes March 1995 edition. Drahtgewebe und Drahtgitter fr industrielle Zwecke - Leitfaden zur Auswahl von Kom
2、binationen aus Maschenweite und Drahtdurchmesser - Teil 1 : Allgemeines (IS0 4783-1 : 1989) This standard incorporates International Standard IS0 4783-1 Industrial wire screens and woven wire cloth - Guide to the choice of aperture size and wire diameter combinations - Part 1 : Generalities. A comma
3、 is used as the decimal marker, National foreword This standard has been prepared by ISO/TC 24. The responsible German body involved in its preparation was the Normenausschuss Siebbden und Korn- messung (Sieve Analysis Standards Committee), Technical Committee Drahfsiebbden. Amendments As compared t
4、o the March 1995 edition, some printing errors have been corrected. Previous edition DIN IS0 4783-1 : 1995-03. IS0 Standard comprises 12 pages. No part of this standard may be reproduced without the prior permission of Ref. No. DIN IS0 4783-1 : 1996-1 O IN Deutsches Institut fr Normung e. V., Berlin
5、. Beuth Verlag GmbH, 10772 Berlin, Germany, as the exclusive right of sale for German Standards (DIN-Normen). English price group O9 Sales No. 0409 08.00 Page 1 IS0 4783-1 : 1989 Industrial wire screens and woven wire cloth - Guide to the choice of aperture size and wire diameter com binations Part
6、1 : Generalities Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each member body interested in a subj
7、ect for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (
8、IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the IS0 Council. They are approved in accordance with IS0 procedures requi
9、ring at least 75 % approval by the member bodies voting. International Standard IS0 4783-1 was prepared by Technical Committee ISO/TC 24, Sieves, sieving and other sizing methods. This second edition cancels and replaces the first edition (IC0 4783-1 : 1981 1, of which it constitutes a minor revisio
10、n. IS0 4783 consists of the following parts, under the general title lndustrial wire screens and woven wire cloth - Guide to the choice of aperture size and wire diameter combi- nations : - Part 1 : Generalities - Part 2: Preferred combinations for woven wire cloth - Part 3: Preferred combinations f
11、or pre-crimped or pressure-welded wire screens Page 2 IS0 4783-1 : 1989 1 Scope 3 Designation This part of IS0 4783 tabulates combinations of aperture sizes and wire diameters for industrial wire screens and woven wire cloth. It provides thereby a comprehensive range from which preferred groups of c
12、ombinations may be chosen. The percentage open area A, of each aperture/wire combi- nation is stated to assist in assessing a combination for screen- ing purposes. IS0 4783-2 gives the preferred combinations for woven wire cloth, and IS0 4783-3 the preferred combinations for pre- crimped or pressure
13、-welded wire screens. Industrial wire screens and woven wire cloth shall be designated in the following sequence by a) width of aperture w; b) diameter of wire d; c) material of wire; d) type of weave (see IS0 4783-2) or type of crimp (see IS0 4783-3). 2 Normative references The following standards
14、contain provisions which, through reference in this text, constitute provisions of this part of IS0 4783. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of IS0 4783 are encouraged to investigate the p
15、ossibility of applying the most recent editions of the standards indicated below. Members of IEC and IS0 maintain registers of currently valid International Standards. 4 Aperture size and wire diameter combinations For each width of aperture, table 1 gives a number of associated diameters of wire an
16、d states the corresponding ap- proximate percentage open area of the wire screen. Selections taken from this list may supply additional data such as mass per unit area (see clause 51 or mesh count per unit length (see clause 6). The open area may be calculated, as a percentage, from the formula IS0
17、3 : 1973, Preferrednumbers - Series ofpreferrednumbers. IS0 497 : 1973, Guide to the choice of series of preferred numbers and of series containing more rounded values of preferred numbers. IS0 2194 : 1972, Wire screens and plate screens for industrial purposes - Nominal sizes of apertures. IS0 4782
18、 : 1987, Metal wire for industrial wire screens and woven wire cloth. A, = 100 - (w y dy where A, is the open area, in percentage; w is the width of the aperture, in millimetres; d is the diameter of the wire, in millimetres. Page 3 IS0 4783-1 : 1989 Open area A, % Table 1 - Aperture size and wire d
19、iameter combinations 125 1 O0 80 63 R 10 125 112 1 O0 90 80 71 63 56 R 20 125 118 112 106 100 95 90 85 80 75 71 67 63 60 56 53 R40 I I Width of aperture w, mm 1 Page 4 IS0 4783-1 : 1989 Table 1 - Aperture size and wire diameter combinations (continuedl Open area AO % I 2.50 I I 2.00 I 84 I 3,s 4.50
20、I 3.15 3.55 4,00 I I I I 74 I 3,55 I 73 - 149 I 4.00 5.00 I I 4,50 I I 4.53 I I 72 I l I I I I 5m I I 5,OO I I 4,s I 169 6.30 5,60 5.53 67 66 7.10 63 61 8.00 60 8.00 7.10 6,30 59 9.00 52 10,o 9.00 51 Page 5 IS0 4783-1 : 1989 42 41 40 42 5,OO 41 5.00 40 Page 6 IS0 4783-1 : 1989 Table 1 - Aperture siz
21、e and wire diameter combinations (conrinuedi 1 Width of aperture w, rnrn i Open area Ao % Diameter of wire d, rnrn 80 79 1.00 78 n 1,12 76 75 1,25 74 73 72 1.40 71 70 69 1,60 68 67 1.80 - 581250 + 50 49 48 3.55 47 0,710 0,710 0,710 0,710 0,710 0,800 1.12 O. 900 0,900 1.12 1.60 2.24 2.00 1 .80 2,50 I
22、 I 2,24 I I 2,oo I 2.50 I I 2.24 I 2.80 I I 2.50 I I 2.24 I 11 I 3.55 I I 3,15 I j 2.80 I I I I - 0.710 0,800 0,710 0.630 0.800 0,710 0,710 0,710 2.00 I I 1.80 I I 1.60 j I 2.00 I I 1.80 I I 1.60 I I 1.40 2.24 I I 2.00 I I 1,m I I 1.60 I 2.00 2,24 1.80 1.60 2,50 2.24 2.00 1.80 2,24 3.15 2,m 2.50 3,1
23、5 2.80 80 0.450 79 O. 630 3% 0,710 1.40 2.50 2,50 Page 7 IS0 4783-1 : 1989 Table 1 - Aperture size and wire diameter combinations (continued) 70 69 0,280 27 Page 8 IS0 4783-1 : 1989 Table 1 - Aperture size and wire diameter combinations (continued) Open area Ao % 72 71 70 69 68 67 66 66 64 63 62 61
24、60 59 58 57 56 55 54 53 52 51 49 48 47 46 45 44 43 42 41 ._ 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 - Page 9 IS0 4783-1 : 1989 Page 10 IS0 4783-1 : 1989 Table 1 - Aperture size and wire diameter combinations (continued) Open area Ao % 53 Diameter of wire d, rnrn I *o 0,071 I I 0,056 p 50 52
25、51 0,071 0,071 50 49 0.056 0,050 0,045 0,063 0,056 0,050 0.045 48 47 0,071 46 - 0.100 45 44 0,071 0,050 0,056 0,056 43 42 10.071 I I I I I 41 0,112 0,071 0,056 0,080 0,080 0,071 0.063 0,112 0.056 I 0,050 I 40 40 39 -too56 38 0,125 - - 0,140 37 36 35 - O, 125 0,112 O, 125 0,112 34 0,140 10,125 I 1 0,
26、112 0,140 O, 125 33 32 31 30 29 2% 27 26 25 - 132 0,160 - - 0,112 I Io,100 I Io,090 I 10.080 0,071 I 30 0,125 0,160 0,180 0,180 0,200 10,180 I Io.160 I 0.08 0.08 0,071 0,063 0.056 0.05 0.045 0.04 0.036 R 20 0,075 0,071 0,067 0.063 0,06 0,056 0.053 0.05 0.048 0.045 0,042 0.04 0,038 0.036 0,034 R 40 O
27、pen area Ao % 46 45 44 43 42 41 40 0,028 zl= 0,030 39 38 37 0,045 0,040 0,036 0,032 0,050 0,045 0.040 0,036 36 0,050 0,045 0,040 0,032 0,056 0.036 0,050 0,045 0.040 0,036 35 34 10,056 I I 0,050 I I O,W5 I I 0,036 I 0,040 I 33 32 31 30 0,045 29 28 0,071 0,071 0.050 27 26 0.080 I 0,071 I 0,063 I 0.056
28、 0,050 25 Table 1 - Aperture size and wire diameter com bina tions conc/uded) Page 12 IS0 4783-1 : 1989 5 Mass per unit area The mass per unit area, A, of an industrial wire screen or woven wire cloth is given, in kilograms per square metre, by the formula 6 Mesh count where d is the diameter of wir
29、e, in millimetres; w is the width of aperture, in millimetres; is the material density, in kilograms per cubic metre; f is the wire screen conversion factor. Values for e shall be taken from table 2. For plain and twilled weave of woven wire cloth, f = 1 (see IS0 4783-2). Values of f for pre-crimped
30、 and pressure-welded wire screens are tabu- lated in IS0 47833. NOTE - Values for the mass per square metre obtained from the above formula are empirical and based on data collected over several decades. Table 2 - Material densities Material Plain steel Carbon steel Stainless steel (17-19 % Cr, 8-10
31、 % Ni) Aluminium (AIMg5) Copper Brass (CuZn37) Brass (CuZnPO) Brass (CuZnlO) Nickel Nickel-copper (NiCu 30 Fe) Copper-tin (CuSn6) (Phosphor bronze) Density e kglm3 7850 7 850 7900 2 700 8900 8450 8650 8800 8900 8 830 8800 The identification of a wire screen or woven wire cloth by the dimensions d an
32、d w may be carried out by direct measurement of - the wire diameter d with a micrometer, - the aperture width w with a vernier inside calliper. The width of apertures which are too small to be measured by calliper may be calculated using the formula 1 w=-d n where w is the aperture width, in millime
33、tres; n is a convenient number of apertures; I is the length covered by n apertures and n wires, in millimetres; d is the wire diameter, in millimetres. For aperture widths of 1 mm and greater, n shall be at least 10 and for smaller aperture widths at least 20. For these smaller apertures, the value
34、 for d shall be determined as an average value of at least five measurements. The length I shall be measured with a steel rule or, in the case of wire cloth with very small apertures, a micrometer magnify- ing glass. Example - A woven wire cloth which has a measured length of 36mm covered by 10 apertures and 10 wires and a measured wire diameter of O,& rnrn, has an aperture width of 36 10 w = - - O,& = 3,15 mm I- Figure - Mesh count of wire cloth
