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1、BRITISH STANDARD BS EN 586-3:2001 Aluminium and aluminium alloys Forgings Part 3: Tolerances on dimensions and form The European Standard EN 586-3:2001 has the status of a British Standard ICS 77.120.10; 77.150.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy:
2、sheffieldun sheffieldun, na, Mon Nov 06 09:30:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 586-3:2001 This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy
3、 Committee on 11 April 2002 BSI 11 April 2002 ISBN 0 580 38157 9 National foreword This British Standard is the official English language version of EN 586-3:2001. The UK participation in its preparation was entrusted by Technical Committee NFE/35, Light metals and their alloys, to Subcommittee NFE/
4、35/5, Wrought aluminium and aluminium alloys, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this docum
5、ent may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of Br
6、itish Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for chang
7、e, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 56, an inside back cover and a back cover. The BSI copyright date
8、 displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:30:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 586-3 Oct
9、ober 2001 ICS 77.150.10 English version Aluminium and aluminium alloys - Forgings - Part 3: Tolerances on dimensions and form Aluminium et alliages daluminium - Pices forges - Partie 3: Tolrances sur dimensions et forme Aluminium und Aluminiumlegierungen - Schmiedestcke - Teil 3: Grenzabmae und Form
10、toleranzen This European Standard was approved by CEN on 30 September 2001. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and biblio
11、graphical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a
12、CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway,
13、 Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2001 CENAll rights of exploitation in any form and by any means reserved worldwide for
14、 CEN national Members. Ref. No. EN 586-3:2001 E Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:30:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 586-3:2001 (E) 2 Contents Foreword3 1Scope 4 2Normative references 4 3Terms and definitions5 4Identification of symbols.6 5General requirement
15、s7 5.1Technical conditions for inspection and delivery7 5.2Application of tolerances7 5.3Summarised references7 5.4Chemical composition.8 5.5Alloy groups.8 6Tolerances on dimensions and form.10 6.1Die forgings10 6.2Hand forgings.25 Annex A (informative) Design guidelines for die and hand forgings30
16、Bibliography56 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:30:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 586-3:2001 (E) 3 Foreword This European Standard has been prepared by Technical Committee CEN /TC 132, “Aluminium and aluminium alloys“, the secretariat of which is held by AF
17、NOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2002, and conflicting national standards shall be withdrawn at the latest by April 2002. Within its programme of work, Technical Committe
18、e CEN/TC 132 entrusted CEN/TC 132/WG3 “Forgings and cast and wrought forging stock” to prepare the following standard : EN 586-3, Aluminium and aluminium alloys - Forgings - Part 3 : Tolerances on dimensions and form This standard is part of a set of three standards. The other standards deal with :
19、EN 586-1, Aluminium and aluminium alloys - Forgings - Part 1 : Technical conditions for inspection and delivery EN 586-2, Aluminium and aluminium alloys - Forgings - Part 2 : Mechanical properties and additional properties Annex A is informative. This standard includes a Bibliography. According to t
20、he CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain,
21、Sweden, Switzerland and the United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:30:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 586-3:2001 (E) 4 1 Scope This European Standard specifies the tolerances on dimensions and form of aluminium and aluminium alloy forgings for gene
22、ral engineering applications of usual design concepts which are formed hot. It applies to : ? die forgings without machining all over : shape dimensions nmax ? 2 000 mm, die closure dimensions tmax ? 600 mm and projected area A ? 4 000 cm; ? die forgings with machining all over : shape dimensions nm
23、ax ? 6 000 mm and projected area A ? 22 000 cm; ? hand forgings : profile dimensions nmax ? 8 000 mm. Tolerances on forgings outside the scope of this standard or of complex design can be mutually agreed between supplier and purchaser. Design guidelines for die and hand forgings are given in annex A
24、. NOTESome of the products mentioned in this European Standard may be the subject of patent or patent applications, and their listing herein is not to be construed in any way as the granting of a licence under such patent right. CEN/TC 132 affirms it is its policy that in the case when a patentee re
25、fuses to grant licenses on standardized standards products under resonable and non discriminatory conditions then this product should be removed from the corresponding standard. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publicatio
26、ns. These normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. F
27、or undated references the latest edition of the publication referred to applies (including amendments). EN 573-3, Aluminium and aluminium alloys - Chemical composition and form of wrought products - Part 3 : Chemical composition. EN 573-4, Aluminium and aluminium alloys - Chemical composition and fo
28、rm of wrought products - Part 4 : Form of products. EN 586-1, Aluminium and aluminium alloys - Forgings - Part 1 : Technical conditions for inspection and delivery. EN 586-2, Aluminium and aluminium alloys - Forgings - Part 2 : Mechanical properties and additional property requirements. EN 12258-1,
29、Aluminium and aluminium alloys - Terms and definitions - Part 1 : General terms. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:30:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 586-3:2001 (E) 5 3 Terms and definitions For the purposes of this European Standard, the terms and definition
30、s given in EN 12258-1 and the following apply. 3.1 die forgings without machining all over parts entering service use whilst still retaining forged surfaces 3.2 die forgings with machining all over parts entering service use after removal of all forged surfaces by machining 3.3 shape dimensions dime
31、nsions associated with the shape length, width and height dimensions, including diameters and distances between centre axes, situated within the shape impression on the parts of the die set, designated n, see Figure1 Key 1Upper die 2Lower die 3Parting line 4Direction of forging Figure 1 - Shape dime
32、nsions n (die forgings) 3.4 die closure dimensions dimensions dissociated with the shape dimensions which cross the die parting line, measured perpendicular to the predominant mating surface, designated t, see Figure2 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:30:45 GMT+00:00 2006, Un
33、controlled Copy, (c) BSI EN 586-3:2001 (E) 6 Key 1Upper die 2Lower die 3Parting line 4Direction of forging Figure 2 - Die closure dimensions t (die forgings) 3.5 projected area area of the part viewed in the direction of forging, designated A, conventionally taken as : ? the area of a circle when th
34、e projection is a circle ; ? the area of a circumscribing rectangle in all other cases, see Figure3. NOTE Projected area is expressed in square centimetres. Key 1 Parting line 2 Direction of forging Figure 3 - Calculation of projected area A (die forgings) 4 Identification of symbols The following s
35、ymbols have been adopted for use in this standard : n is shape dimension Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:30:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 586-3:2001 (E) 7 nmaxis maximum shape dimension tis thickness and/or die closure dimension tmaxis maximum thickness/m
36、aximum die closure dimension Ais projected area in square centimetres mis mismatch (offset) xis fin height yis fin width fis flatness (plus/minus tolerance) sis flatness or straightness (plus only tolerance) pis profile tolerance (hand forgings) cis constant thickness tolerance (hand forgings) his h
37、eight of rib, flange or bead dis diameter of indentations Fis flash type Ris rounding/radius is inboard draft angle Dtis die closure tolerance Mtis mismatch tolerance 5 General requirements 5.1 Technical conditions for inspection and delivery Technical conditions for inspection and delivery of forgi
38、ngs are specified in EN 586-1. 5.2 Application of tolerances The dimensional tolerances specified on drawings shall, in principle, conform to those laid down in this standard. If no dimensional tolerances are specified on drawings, those given in this standard shall apply. In such cases it is recomm
39、ended that a suitable reference to this standard be made on drawings. If the purchaser requires tolerances on individual dimensions tighter than those laid down in this standard, these shall be agreed with the supplier. 5.3 Summarised references A summary of references to the applicable subclauses a
40、nd tables covering the different types of characteristics together with the basis on which tolerances are calculated is given in Table 1. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:30:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 586-3:2001 (E) 8 Table 1 Summarised references Chara
41、cteristicSubclauseBaseTable reference Die forgings6.1 Die forgings without machining all over6.1.2 Shape dimensions6.1.2.2nTable 3, Table 4 Die closure dimensions6.1.2.4tmax and ATable 5 Die forgings with machining all over6.1.3 Shape dimensions6.1.3.2nTable 6 Die closure dimensions6.1.3.4nmax and A
42、Table 7 Mismatch (offset)6.1.4 Die forgings without machining all over6.1.4.2nmaxTable 8 Die forgings with machining all over6.1.4.3nmaxTable 9 Flash and fin projections6.1.5nmaxTable 10, Table 11 Roundings and transitions6.1.6R nominal Ejector marks6.1.7ATable 12 Flatness and straightness6.1.8nmaxT
43、able 13 Angles6.1.9n1Table 14 Hand forgings6.2 Profile dimensions6.2.2nmax and tmaxTable 15 Flatness and straightness6.2.3nmaxTable 16 5.4 Chemical composition The chemical composition limits of the alloys shall be as specified in EN 573-3. 5.5 Alloy groups For the purposes of this European Standard
44、 alloys are divided into two groups dependent on their shaping capability. The division into Group I and Group II of these alloys is specified in Table 2. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:30:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 586-3:2001 (E) 9 The division into
45、Class A and Class B alloys shall be as specified in EN 573-4. Class A covers aluminium and aluminium alloys produced in large volume as forgings for which mechanical properties are specified in EN 586-2. Class B covers aluminium and aluminium alloys produced in limited volume as forgings for which m
46、echanical properties are not specified. Table 2 - Alloy Groups Alloy Group I (forge with ease)Alloy Group II (difficult to forge) Alloy designationClassAlloy designationClass EN AW-1050A AI 99,5BEN AW-2011AI Cu6BiPbB EN AW-2014AI Cu4SiMgA EN AW-6005A AI SiMg (A)BEN AW-2017AAI Cu4MgSi(A)B EN AW-2618A
47、AI Cu2Mg1,5NiB EN AW-6060 AI MgSiBEN AW-2219AI Cu6MnB EN AW-2024AI Cu4Mg1A EN AW-6061 AI Mg1SiCuBEN AW-2031AI Cu2,5NiMgB EN AW-4032AI Si12,5MgCuNiB EN AW-6082 AI Si1MgMnAEN AW-5454AI Mg3MnB EN AW-5754AI Mg3A EN AW-5019AI Mg5B EN AW-5083AI Mg4,5Mn0, 7A EN AW-7010AI Zn6MgCuB EN AW-7012AI Zn6Mg2CuB EN
48、AW-7020AI Zn4,5Mg1B EN AW-7075AI Zn5,5MgCuA Other alloys shall be grouped as follows : Alloy Group I ? unalloyed aluminium ; ? alloys Al Mn ; ? alloys Al Mg with a maximum of 2,8 % Mg ; ? alloys Al MgSi ; Alloy Group II : ? alloys Al Mg with more than 2,8% Mg ; ? alloys Al CuMg ; ? alloys Al ZnMg. L
49、icensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:30:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 586-3:2001 (E) 10 6 Tolerances on dimensions and form 6.1 Die forgings 6.1.1 General Dimensional variations are influenced by the fabrication accuracy of the dies, tool wear, shrinkage and the unavoidable deviations caused during the shaping process as well as during heat treatment. The different forging applications necessitate different dimensional tolerance levels for die forgings with and without machining all
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