1、Industrial wire screens and woven wire cloth - Guide to the choice of aperture size and wire diameter combinations wire screens Part 2: Preferred combinations for pre-crimped or pressure-welded (IS0 4783-3 : 1981) ICs 19.120 DIN - IS0 4783-3 Supersedes March 1995 edition. Drahtgewebe und Drahtgitter
2、 fr industrielle Zwecke - Leitfaden zur Auswahl von Kombinationen aus Maschenweite und Draht- durchmesser - Teil 3: Vorzugskombinationen fr vorgeformte oder pregeschweite Drahtgitter (IS0 4783-3 : 1989) This standard incorporates International Standard IS0 4783-3 Industrial wire screens and woven wi
3、re cloth - Guide to the choice of aperture size and wire diameter combinations - Part 3: Preferred combinations for pre-crimped or pressure-welded wire screens. A comma is used as the decimal marker. National foreword This standard has been prepared by ISO/TC 24. The responsible German body involved
4、 in its preparation was the Normenausschuss Siebbden und Korn- messung (Sieve Analysis Standards Committee), Technical Committee Drahfsiebbden. Amendments As compared to the March 1995 edition, some printing errors have been corrected. Previous editions DIN 4192-1: 1968-02; DIN IS0 4783-3: 1995-03.
5、IS0 Standard comprises 6 pages. No pari of this standard may be reproduced without the prior permission of Y Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany, s the exclusive right of sale for German Standards (DIN-Normen). Ref. No. DIN IS0 4783-3 : 1996-1 Englis
6、h price group 07 Sales No. 0407 08.00 Page 1 IS0 4783-3 : 1981 Industrial wire screens and woven wire cloth - Guide to the choice of aperture size and wire diameter combinations Part 3: Preferred combinations for pre-crimped or pressure-welded wire screens Foreword IS0 (the International Organizatio
7、n for Standardization) is a worldwide federation of national standards institutes (IS0 member bodies). The work of developing Inter- national Standards is carried out through IS0 technical committees. Every member body interested in a subject for which a technical committee has been set up has the r
8、ight to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as Int
9、ernational Standards by the IS0 Council. International Standard IS0 4783/3 was developed by Technical Committee ISO/TC 24, Sieves, sieving and other sizing methods, and was circulated to the member bodies in December 1979. It has been approved by the member bodies of the following countries : Canada
10、 Ireland Spain Egypt, Arab Rep. of Netherlands Switzerland France Portugal United Kingdom Germany, F.R. Romania USA India South Africa, Rep. of USSR No member body expressed disapproval of the document. 1 Scope and field of application This part of IS0 4783 tabulates preferred combinations of aper-
11、ture size and wire diameter for pre-crimped or pressure welded wire screens for industrial purposes which are taken from the general list of aperture/wire combinations given in IS0 4783/1. It applies to wire screens of aperture size from 125 to 1 mm. NOTE - This is the first International Standard o
12、n pre-crimped or pressure welded wire screens for industrial purposes; these specifica- tions are a compromise which takes account of existing national stan- dards. IS0 Member Bodies are earnestly requested to rationalize fur- ther in order to reduce the number of wire diameters per aperture width w
13、ithin the next 5 years without excluding the option of increasing the numbers of preferred apertures. Part 2 of this International Standard gives the preferred com- binations for woven-wire cloth. 2 References IS0 3, Preferred numbers - Series of preferred numbers. IS0 497, Guide to the choice of se
14、ries of preferred numbers and of series containing more rounded values of preferred numbers. IS0 2194, Wire screens and plate screens for industrial pur- poses - Nominal sizes of apertures. IS0 4782, Industrial wire screens and woven wire cloth - Diameters of metal wire. IS0 4783, Industrial wire sc
15、reens and woven wire cloth - Guide to the choice of aperture size and wire diameter com- binations Part 1 : Generalities. Part 2 : Preferred combinations for woven wire cloth. Page 2 IS0 4783-3 : 1981 3 Designation Pre-crimped or pressure welded screens for industrial purposes shall be designated in
16、 the following sequence by a) width of aperture w; b) diameter of wire d; c) material of wire; di type (see table 1 I. w = width of aperture wire M Figure - Width of aperture and diameter of wire 4 Aperture size and wire diameter combinations Table 2 lists the preferred combinations of aperture size
17、 and wire diameter for wire screens and states the open area A, and the mass per square metre, eA, for each combination. 5 Mass per unit area The mass per unit area, eA, of pre-crimped or pressure welded wire screens is given, in kilograms per square metre, by the for- mula d2 ef = 618,l (w + di whe
18、re d is the diameter of wire, in millimetres; w is the width of aperture, in millimetres; f is the screen conversion factor; e is the material density, in kilograms per cubic metre. Values for f shall be taken from table 1. For wires of plain or carbon steel, e = 7 850 kg/m3. For wires of stainless
19、steel, e = 7 800 kg/ms. Page 3 IS0 4783-3 : 1981 Table 1 - Types and screen conversion factors Figure Designation Double crimp screen Single intermediate crimp screen Double intermediate crimp screen Lock crimp screen Flat-top screen Pressure-welded screen Screen conversion factorfil 1 .o0 1) These
20、factors are given as a guideline. Actual values may vary depending on the weaving process. Page 4 IS0 4783-3 : 1981 Width of aperture R 10 R20 R40/3 Table 2 - Preferred aperture size and wire diameter combinations Diameter Open a rea Of wire c W W rnrn rnrn 45 4040 35,5 31.5 31,5 m 25 25 a4 20 20 18
21、 5,00 630 8,00 10,o 5.00 6,30 8,00 10.0 5m 630 8,00 10,o 4m 5.00 63 8.00 10,o 4,00 5.00 6.30 8,OO 3,15 4.00 5,oo 6.30 8,OO 4800 5.00 630 8.00 3,15 4m 5.00 630 8.00 74 69 64 58 72 67 60 54 71 65 59 53 74 69 64 57 51 72 67 61 54 75 69 64 58 51 68 63 56 50 72 67 61 55 48 Wid R 10 mrn 125 W - - - - 100
22、of Mass!) per unit area A kg/m2 9.83 15.34 23,9 34.51 53.31 W mrn d rnm 45 - 69 8.00 10,o 12,5 16.0 77 72 67 61 54 75 69 64 58 63 8.00 10,o 12,5 10.89 1633 25.40 37.80 37,5 630 8,00 10.0 12.5 74 68 63 56 11.51 17,67 26.46 39.69 734 12.06 18,96 27,91 77 72 67 61 31,5 - 8.70 133 30,60 20.58 9.62 14.70
23、 22,s 33.42 26.5 - 10.08 15,37 23.56 3,80 7.01 1033 16,lO 24.63 36,29 22.4 7,70 11,s 17.56 26,74 5.44 8.47 12,70 19,17 29.03 19 8,83 13.23 19.92 30.10 5,s 9,24 13,N 20,74 31,26 1) For type A (see table 1) of plain or carbon steel, = 7 850 kg/d (see clause 5). Page 5 IS0 4783-3 : 1981 Width of apertu
24、re R 20 R 40/3 W W mm rnrn 5,6 5,6 Table 2 - Preferred aperture size and wire diameter combinations (continued) Diameter Of wire d mrn 1.60 2,00 2.50 3,15 Open area % Ao R10 rnm 16 W 12,5 10 8 Mass) pei unit area A kg/m2 R20 rnm 16 W 14 12,5 11.2 10 9 8 Mass11 per unit area A kg/rn2 4.29 658 10.16 1
25、5,12 22860 4.81 7.35 11,29 16.71 24,83 7,71 11,81 5 4.5 4 3.55 3.15 2,8 2.5 1 2,m 2,50 3.15 4,75 1.60 1 2.24 3.15 1,40 2,24 2.50 4 1.25 1.60 2,00 2,24 2.50 1.25 1.40 1,m 1,80 2,00 3,35 1 ,00 1,25 1,80 2,24 1,12 1 1 ,60 1 .80 2.00 2,8 0.900 1.12 1.40 1880 1 ,00 1.12 1.25 Diameter of wire d rnm 2.50 3
26、,15 4m 5m 630 2.50 3,15 4m 5m 6.30 3.15 4.00 5.00 630 2,50 3.15 4.00 5.00 630 2.50 3.15 3,s 4,m 5,oo 2,00 2.50 3.15 4.00 5m 2.24 3,15 4m 5.00 Open area Ao % 75 70 64 58 51 -l 401: mrn 16 W - R 10 mm W 60 54 48 41 4,52 6,3 9.80 14.40 5 57 51 44 38 4,93 7,26 1038 15.46 72 67 60 54 48 65 59 56 53 47 36
27、 5.12 6.28 9.12 15,s - 13,2 - 11,2 53 I 17,47 58 51 45 41 42 653 9,45 11,34 3.78 5,81 8,47 10,21 12.21 4.13 5,03 6,31 73-9 9,15 2,92 4,31 739 11,40 64 57 51 8.05 123 18,41 4 58 51 45 41 38 61 I 8.78 lo,% 13,37 19.60 423 6.35 9,58 14.51 21,17 5.43 99 15.05 21.90 58 54 48 69 64 58 51 44 65 56 50 43 69
28、 64 61 55 48 64 58 51 48 44 64 61 55 48 62 53 46 39 64 58 51 44 55 51 48 44 41 - 9,5 59 53 42 36 1.80 2,24 2,50 3,15 4.00 3.81 5,67 690 10.37 15.63 - 3,15 - 54 48 44 41 37 3.73 5,47 634 8,31 9.86 8 2.00 2.50 3,15 3,55 4,00 1.80 2.00 2,50 3.15 5m 7.56 11,N 13,86 16,93 4.62 5.58 8,27 12.29 57 51 45 37
29、 2.78 4.06 5.93 835 51 48 44 41 37 3,63 4,40 529 638 7.93 4,84 863 12,79 18.99 56 49 39 32 2.57 3.78 6.62 9.89 4.12 6,12 9.02 133 1 For type A (see table 1) of plain or carbon steel, Q = 7 850 kg/rn3 (see clause 5). Page 6 IS0 4783-3 : 1981 1,18 1 Table 2 - Preferred aperture size and wire diameter
30、com binations i conchded i 0.450 52 0,630 43 0,710 36 0,450 51 0,560 44 0,710 37 0.400 51 0.500 44 0,630 38 0,710 34 R 10 mrn W - - 2 mm mm 1 0,710 0,710 0,800 51 0.900 48 1,12 41 1,25 38 - 1.6 1.25 - 1 R 20 mm 2,24 W - - 2 1.25 1,12 - 1 57 51 44 37 57 51 44 37 Masst) per unit area A 2,17 3,28 4.74 684 2.36 2,90 355 5,11 6,11 kg/d 255 3,81 5,46 7,78 2,16 3,25 535 8.03 1,51 23 33 4,88 139 2.03 3,03 4.47 1,u 2.37 3,50 1.45 2,12 3,09 3.74 1) (see clause 5). For type A (see table 1) of plain or carbon steel, Q = 7 850 kglm3
