BS 7579-1992 Specification for designation and nominal sizes of openings for woven wire cloth perforated plate and electroformed sheet for industrial screens《工业筛用金属丝网布、多孔板和电铸板的筛孔标记.pdf
《BS 7579-1992 Specification for designation and nominal sizes of openings for woven wire cloth perforated plate and electroformed sheet for industrial screens《工业筛用金属丝网布、多孔板和电铸板的筛孔标记.pdf》由会员分享,可在线阅读,更多相关《BS 7579-1992 Specification for designation and nominal sizes of openings for woven wire cloth perforated plate and electroformed sheet for industrial screens《工业筛用金属丝网布、多孔板和电铸板的筛孔标记.pdf(10页珍藏版)》请在麦多课文档分享上搜索。
1、BRITISH STANDARD BS 7579:1992 ISO 2194:1991 Specification for Designation and nominal sizes of openings for woven wire cloth, perforated plate and electroformed sheet for industrial screensBS7579:1992 This British Standard, having been prepared under the directionof the General Mechanical Engineerin
2、g Standards Policy Committee,waspublished underthe authorityof the StandardsBoardand comesintoeffect on 15May1992 BSI 10-1999 The following BSI references relate to the work on this standard: Committee reference GME/28 Draft for comment 90/76585 DC ISBN 0 580 20883 4 Committees responsible for this
3、British Standard The preparation of this British Standard was entrusted by the General Mechanical Engineering Standards Policy Committee (GME/-) to Technical Committee GME/28, upon which the following bodies were represented: BCIRA British Cement Association British Coal Corporation British Laborato
4、ry Ware Association Coated Abrasives Manufacturers Association Guild of Metal Performance Institution of Chemical Engineers Institution of Mining and Metallurgy Mechanical Handling Engineers Association Ministry of Defence NABIM Society of Chemical Industry Society of Cosmetic Scientists Woven Wire
5、Association The following bodies were also represented in the drafting of the standard, through subcommittees and panels: British Aggregate Construction Materials Industries British Steel Industry British Industry (Wire Section) National Federation of Clay Industries Ltd. Refractories Association of
6、 Great Britain Amendments issued since publication Amd. No. Date CommentsBS7579:1992 BSI 10-1999 i Contents Page Committees responsible Inside front cover National foreword ii Introduction 1 1 Scope 1 2 Normative reference 1 3 Definitions 1 4 Designation 1 5 Nominal sizes of openings 1 Annex A (info
7、rmative) Bibliography 4 Table 1 Nominal sizes of openings Millimetre sizes 2 Table 2 Nominal sizes of openings Micrometre sizes 3 List of references Inside back coverBS7579:1992 ii BSI 10-1999 National foreword This British Standard has been prepared under the direction of the General Mechanical Eng
8、ineering Standards Policy Committee. It is identical with ISO2194:1991 Industrial screens Woven wire cloth, perforated plate and electroformed sheet Designation and nominal sizes of openings, published by the International Organization for Standardization (ISO) and prepared by Technical Committee IS
9、O/TC24, Sieves, sieving and other sizing methods, subcommittee SC3, industrial wire screens. ISO2194 was produced as a result of international discussions in which the UK took an active part. Cross-references The Technical Committee has reviewed the provisions of ISO9045:1990 to which normative refe
10、rence is made in the text, and has decided that they are acceptable for use in conjunction with this standard. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a Britis
11、h Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages1 to 4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments inc
12、orporated. This will be indicated in the amendment table on the inside front cover.BS7579:1992 BSI 10-1999 1 Introduction The nominal sizes of openings specified in this International Standard are taken from the R10, R20 and R40 series of preferred numbers in accordance with ISO3 and from the R10, R
13、20 and R40 series of rounded values in accordance with ISO497. The sizes within each series follow a geometric progression. Therefore, each size of a series differs from the successive size by a constant percentage. Apart from the omission of a few unusual values in the range of the very small sizes
14、, the ratios of the successive sizes are as follows. 1 Scope This International Standard specifies the designation and nominal sizes of openings for woven wire cloth, perforated plate and electroformed sheet used as screening media for industrial purposes. 2 Normative reference The following standar
15、d contains provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the edition indicated was valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to inve
16、stigate the possibility of applying the most recent edition of the standard indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 9045:1990, Industrial screens and screening Vocabulary. 3 Definitions For the purposes of this International Standard
17、, the definitions given in ISO9045 apply. 4 Designation 4.1 General Nominal sizes of openings of1mm and above shall be expressed in millimetres (mm); sizes below1mm shall be expressed in micrometres (4m). 4.2 Woven wire cloth Woven wire cloth shall be designated by the nominal size of the apertures
18、w, the type of weave, and the nominal diameter d and the material of the wire. 4.3 Perforated plate Perforated plate shall be designated by the nominal size of the holes w (central separation of opposite sides or diameter), the shape of the holes (square, circular or any other regular geometric shap
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