1、BS ISO 9044:2016 Industrial woven wire cloth Technical requirements and tests BSI Standards Publication WB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS ISO 9044:2016 BRITISH STANDARD National foreword This British Standard is the UK implementation of ISO 9044:2016. It supersedes BS ISO 90
2、44:1999 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee LBI/37, Particle characterization including sieving. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to includ
3、e all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2016. Published by BSI Standards Limited 2016 ISBN 978 0 580 83349 6 ICS 73.120 Compliance with a British Standard cannot confer immunity from legal obligations. This Br
4、itish Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2016. Amendments/corrigenda issued since publication Date T e x t a f f e c t e dBS ISO 9044:2016 ISO 2016 Industrial woven wire cloth Technical requirements and tests Tissus mtalliques industr
5、iels Exigences techniques et vrifications INTERNATIONAL STANDARD ISO 9044 Third edition 2016-07-01 Reference number ISO 9044:2016(E)BS ISO 9044:2016ISO 9044:2016(E)ii ISO 2016 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2016, Published in Switzerland All rights reserved. Unless otherwise sp
6、ecified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or
7、 ISOs member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyrightiso.org www.iso.orgBS ISO 9044:2016ISO 9044:2016(E)Foreword iv 1 Scope . 1 2 Normative references 1 3 T erms and
8、 definitions . 1 4 Requirements 4 4.1 Aperture width and wire diameter combination 4 4.2 Maximum permissible errors on aperture width . 4 4.3 Permissible number of major blemishes 7 4.4 Maximum permissible error on overall size 7 4.5 Flatness 8 4.6 Surface conditions 8 4.7 Weaving wire 8 4.7.1 Mater
9、ial 8 4.7.2 Maximum permissible error on wire diameter . 8 5 Test methods . 8 5.1 Wire diameter, d (see 4.7.2) . 8 5.2 Aperture width, w 9 5.2.1 Average aperture width maximum permissible error, Y i(see 4.2.1) 9 5.2.2 Maximum permissible error of aperture width, X i(see 4.2.3) 10 5.3 Material compos
10、ition .10 5.4 Overall size (see 4.4) .10 5.5 Weaving blemishes .11 6 Inspection documents 11 6.1 Certificate of compliance with the order .11 6.2 Test report 11 6.3 Inspection certificate 11 6.4 Chemical analysis .11 6.5 Other tests 11 7 Ordering information .11 7.1 Essential information .11 7.2 Add
11、itional information .11 8 Delivery .12 8.1 Rolls .12 8.2 Packing 12 8.3 Labelling 12 Annex A (informative) Major blemishes 13 Annex B (informative) Calculation of mean value and standard deviation 14 Annex C (informative) Calculation of sub values for standard deviation s 0in Table 1 .16 Bibliograph
12、y .17 ISO 2016 All rights reserved iii Contents PageBS ISO 9044:2016ISO 9044:2016(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out thr
13、ough ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collabo
14、rates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval
15、 criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subj
16、ect of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trad
17、e name used in this document is information given for the convenience of users and does not constitute an endorsement. For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Te
18、chnical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information ISO 9044 was prepared by Technical Committee ISO/TC 24, Particle characterization including sieving, Subcommittee SC 8, Test sieves, sieving and industrial screens. This third edition cancels and replaces the
19、 second edition (ISO 9044:1999), which has been technically revised.iv ISO 2016 All rights reservedBS ISO 9044:2016INTERNATIONAL ST ANDARD ISO 9044:2016(E) Industrial woven wire cloth Technical requirements and tests 1 Scope This International Standard defines terms regarding industrial woven wire c
20、loth for screening purposes and specifies maximum permissible error, requirements, and test methods. It applies to industrial woven wire cloth with square apertures, made of steel, stainless steel, or non- ferrous metals (see ISO 4783-2). It does not apply to woven wire cloth coated after weaving no
21、r does it apply to pre-crimped and welded wire screens which are covered in ISO 4783-3 and ISO 14315. It is of limited application to woven wire cloth used for purposes other than screening which may necessitate other requirements. The alternative requirements may be agreed between the purchaser and
22、 the supplier at the time of placing the order. 2 Normative references The 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 undated references, the latest edition
23、 of the referenced document (including any amendments) applies. ISO 2194, Industrial screens Woven wire cloth, perforated plate and electroformed sheet Designation and nominal sizes of openings ISO 4782, Metal wire for industrial wire screens and woven wire cloth ISO 4783-1, Industrial wire screens
24、and woven wire cloth Guide to the choice of aperture size and wire diameter combinations Part 1: Generalities ISO 4783-2:1989, Industrial wire screens and woven wire cloth Guide to the choice of aperture size and wire diameter combinations Part 2: Preferred combinations for woven wire cloth 3 T erms
25、 a nd definiti ons For the purposes of this document, the following terms and definitions apply. 3.1 aperture width w distance between two adjacent warp or weft wires, measured in the projected plane at the mid- positions Note 1 to entry: See Figure 1. ISO 2016 All rights reserved 1BS ISO 9044:2016I
26、SO 9044:2016(E) Figure 1 Aperture width, wire diameter, and pitch 3.2 wire diameter d diameter of the wire in the wire screen Note 1 to entry: The wire diameter may be altered slightly during the weaving process. See Figure 1. 3.3 pitch p distance between the mid-points of two adjacent wires Note 1
27、to entry: The pitch is the sum of the aperture width, w, and the wire diameter, d. See Figure 1. 3.4 warp all wires running lengthwise in the cloth as woven 3.5 weft all wires running crosswise in the cloth as woven 3.6 number of apertures per unit length n number of measurements taken 3.7 open scre
28、ening area A 0 percentage of the surface of all the apertures in the total screening surface Note 1 to entry: The open screening area is calculated as the ratio of the square of the nominal aperture width, w, and the square of the nominal pitch, p = w + d, rounded to a full percentage value: %2 ISO
29、2016 All rights reservedBS ISO 9044:2016ISO 9044:2016(E) 3.8 type of weave way in which the warp (3.4) and weft (3.5) wires cross each other Note 1 to entry: Industrial woven wire cloth is manufactured with square apertures in plain or twilled weave (see Figure 2). a) Plain weave b) Twilled weave Fi
30、gure 2 Types of weave 3.9 f i r m n e s s o f w o v e n w i r e c l o t h tension existing between the crossing warp (3.4) and weft (3.5) wires and which determines the firmness of the wire cloth Note 1 to entry: It is affected by the relationship of w to d and by the type of weave. 3.10 mass per un
31、it area A quantity calculated using the following formula: , whered is the wire diameter, in mm;w is the aperture width, in mm; is the material density, in kg/m(s) 3 ; A is the mass per unit area, in kg/m(s) 2 Note 1 to entry: This formula gives the calculated mass per unit area. Note 2 to entry: Th
32、e value 618,1 is based on the crimped wire. Note 3 to entry: Typical values of for various materials are given in ISO 4783-2:1989, Table 2. For example, the mass per unit area for plain or carbon steel with a density of 7 850 kg/m 3can be calculated using the formula provided as follows: , , ISO 201
33、6 All rights reserved 3BS ISO 9044:2016ISO 9044:2016(E) The formula provided can also be used to calculate the wire diameter (3.2), d, when the pitch (3.3), p, or (w + d), and the mass per unit area, A,are known. ln the case of plain or carbon steel ( = 7 850 kg/m 3 ), see the following formula: , 3
34、.11 major blemishes production defects which significantly affect the aperture width (3.1) or surface quality of the wire cloth Note 1 to entry: See Annex A for information. 4 Requirements 4.1 Aperture width and wire diameter combination Unless otherwise agreed between the supplier and the purchaser
35、, the aperture width and wire diameter combination shall be selected from ISO 2194, ISO 4782, ISO 4783-1, or ISO 4783-2, as appropriate. 4.2 Maximum permissible errors on aperture width The maximum permissible errors on aperture width are given in Table 1. In Table 1 and Formulae (1) to (7), the suf
36、fix “i”, used with the symbols denotes “industrial wire cloth”. In Formulae (1) to (8), X i , Y i , s 0 , and w are expressed in micrometres. NOTE Nominal apertures in Table 1 lower than 1 mm are in m, higher or equal in mm.4 ISO 2016 All rights reservedBS ISO 9044:2016ISO 9044:2016(E) Table 1 Maxim
37、um permissible error of aperture widthNominal aperture width Maximum permissible error on aperture width, w for woven wire cloth made of austenite stainless steel steel, copper, brass, bronze, alumin- ium, non-ferrous steels, and other stainless steels without austenite stainless steel (1) (2) (3) (
38、4) (5) (6) (7)mm w Y i s 0 +X i Y i s 0 +X i 16 0,69 0,913 1,89 0,78 1,026 2,09 12,5 0,54 0,741 1,58 0,62 0,831 1,74 10 0,43 0,616 1,34 0,50 0,690 1,48 8 0,35 0,513 1,14 0,40 0,574 1,26 6,3 0,28 0,423 0,96 0,32 0,473 1,06 5 0,22 0,352 0,82 0,25 0,393 0,90 4 0,18 0,295 0,70 0,20 0,330 0,77 3,15 0,14
39、0,245 0,59 0,16 0,274 0,65 2,5 0,11 0,205 0,50 0,13 0,229 0,55 2 0,09 0,174 0,43 0,10 0,193 0,47 1,6 0,07 0,147 0,37 0,08 0,164 0,41 1,25 0,06 0,122 0,31 0,07 0,136 0,34 1 0,05 0,104 0,27 0,05 0,116 0,30m w Y i s 0 +X i Y i s 0 +X i 800 39 88,8 231 44 98,8 255 630 31 75,1 197 35 83,5 218 500 25 64,1
40、 170 29 71,2 188 400 21 55,1 147 24 61,2 163 315 17 47,0 127 19 52,2 140 250 13,8 40,5 110 15,8 45,0 121 200 11,6 35,2 96 13,2 39,0 106 160 9,7 30,6 84 11,1 34,0 93 125 8,1 26,4 73 9,3 29,3 80 100 7,0 23,2 64 8,0 25,7 71 80 6,0 20,5 57 6,9 22,7 63 63 5,2 17,9 50 6,0 19,9 55 50 4,6 15,9 44 5,3 17,6 4
41、9 40 4,2 14,2 39 4,8 15,7 43 32 3,8 12,7 35 4,3 14,1 39 25 3,5 9,3 25 3,9 9,5 25 20 3,2 7,6 20 3,7 7, 8 20 ISO 2016 All rights reserved 5BS ISO 9044:2016ISO 9044:2016(E) 4.2.1 Y iis the maximum permissible error of the arithmetical mean value of the aperture widths measured and calculated separately
42、 in both warp and weft directions. The arithmetical average aperture width shall not deviate from the nominal size by more than Y; where , , (1) for column 2 in Table 1 and , , (2) for column 5 in Table 1. 4.2.2 The maximum standard deviation s of the aperture widths measured and calculated separate
43、ly in both warp and weft directions shall not exceed the values of s 0in Table 1, columns 3 and 6. (3) with (4) 4.2.3 No aperture width shall exceed the nominal size by more than the value +X. It is the maximum permissible deviation of a single aperture measured in one direction (warp or weft) and i
44、s calculated using Formulae (5) and (6): , , , (5) for column 4 in Table 1 and , , , (6) for column 7 in Table 1, but with a maximum value of X i= w. A line of apertures exceeding the value X iis deemed to be a major blemish (see Annex A). As, on the basis of experience, negative deviations of singl
45、e aperture widths do not affect the screening process, values for X ihave only positive deviations. 4.2.4 Calculation of s 0 . The maximum standard deviation of the aperture sizes in warp and weft directions taken separately shall not exceed the values of s 0in Tables 1, column 3 and 6. The standard
46、 deviation s 0is calculated normal distribution (w) based of not more than 6 % of a total number of aperture size between +X and +Z. , ; 2(7)6 ISO 2016 All rights reservedBS ISO 9044:2016ISO 9044:2016(E) 4.2.5 Calculation of sub-values aperture width for s 0in Table 1, column 3 and 6: (8) wherew x i
47、s the sub-value aperture width to be calculated;w u is the lower table value aperture width;w o is the upper table value aperture width;s u is the lower table value standard deviation;s o is the upper table value standard deviation. NOTE See Annex C for example to calculated the sub values. 4.3 Perm
48、issible number of major blemishes 4.3.1 Woven wire cloth cannot be produced commercially without there being some manufacturing blemishes. The supplier and the purchaser shall agree upon the number and nature of major blemishes which are permissible per unit area of the wire screen. The percentage yiel
