1、BRITISH STANDARDBS EN 4300:2008Aerospace series Identification marking of engine items Design standardICS 49.050g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g5
2、5g3g47g36g58BS EN 4300:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 May 2008 BSI 2008ISBN 978 0 580 60984 8National forewordThis British Standard is the UK implementation of EN 4300:2008. The UK participation in its preparation was
3、entrusted to Technical Committee ACE/12, Aerospace fasteners and fastening systems.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its
4、correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments/corrigenda issued since publicationDate CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 4300April 2008ICS 49.050English VersionAerospace series - Identification marking of engine
5、 items -Design standardSrie arospatiale - Marquage pour articles moteurs -Normes de conceptionLuft- und Raumfahrt - Kennzeichnung vonTriebwerkbauteilen - KonstruktionsnormThis European Standard was approved by CEN on 29 February 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regu
6、lations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This Eu
7、ropean Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the nat
8、ional standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and U
9、nited Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 4300:2008: E2
10、 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Abbreviation.4 4 Presentation .4 4.1 Definition 4 4.2 Marking .5 4.3 Relationship between identifier and mark 5 5 Application of use5 5.1 General5 5.2 Selection of the marks (see Table 3) 6 5.3 Selection of the marking locations 7 5.4 Sel
11、ection of the marking processes 7 6 Information to be entered on the drawing.8 6.1 General8 6.2 Definition of the item .8 6.3 Location of indication marks9 6.4 Automatic identification methods10 BS EN 4300:20083 Foreword This document (EN 4300:2008) has been prepared by the Aerospace and Defence Ind
12、ustries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of ASD, prior to its presentation
13、 to CEN. 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 October 2008, and conflicting national standards shall be withdrawn at the latest by October 2008. Attention is drawn to the possibility th
14、at some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound t
15、o implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switz
16、erland and the United Kingdom. BS EN 4300:20084 1 Scope This standard: describes the location and the layout of the marks of the item; describes the marking processes to be used according to the environment and the function of the items; determines the selection conditions of the marks; determines t
17、he compatibility conditions of the marking processes with the constitution, the production and the use of the items. This document applies to aerospace engine items and shall be used in conjunction with EN 4301. 2 Normative references The following referenced documents are indispensable for the appl
18、ication of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 4301, Aerospace series Identification marking methods for engine items. AS 478J, Identification Marking Methods
19、. 1) 3 Abbreviation O.C.R. Optical Character Recognition 4 Presentation 4.1 Definition 4.1.1 Identity mark An identity is represented by a mark affixed by means of a marking process. An identity mark allows for example: the identity of an item and its design origin; the initial compliance of the ite
20、m with its definition to be proved; the data relating to the various stages of the items life in production and in use to be traced (traceability); the conditions of use to be specified; etc. 4.1.2 Description of an identity mark An identity mark is information (coded identity or not), consisting of
21、 characters presented in a clear and orderly manner. A mark is characterised by a composition and a size and is applied directly to the item or to a separate support. 1) Published by: Society of Automotive Engineers (SAE), 400 Commonwealth Drive, Warrendale, PA 15096-0001 USA. BS EN 4300:20085 4.2 M
22、arking Marking is the action of affixing the marks on a medium (item, label, etc.). Marking is defined by a process (or several alternative processes) at a location identical for all the units of the same item. The marking process is selected according to: its ability not to affect the material, the
23、 geometry or the characteristics of the item; its ease of implementation; its cost; its long-term resistance. Selection shall be thorough. An ill-suited process or sign size may damage an item during the last phases of manufacturing. 4.3 Relationship between identifier and mark The following example
24、s in Table 1 illustrate the relationship between identifier and mark. Table 1 Identity requirement Mark to be applied To identify items definition. F0320 37356-12-6 To indicate the conditions of use. VENT BEFORE OPENING To state the compliance of an item with its definition. (inspection punch) To pr
25、ovide for traceability of the item. 12345678 (serial number) To specify a functional aspect of the item. (flow direction of a fluid) To specify the condition of the item. REP R2738 (item having been subjected to repair) To specify a grade of material. Colour dot on an elastomer seal 5 Application of
26、 use 5.1 General Minimum identification shall be provided to clearly identify the part and be compatible with the item and its environment. SX OCB BS EN 4300:20086 5.2 Selection of the marks (see Table 3) 5.2.1 General Selection and layout of the marks shall not be detrimental to the function of the
27、 item. Avoid repeating existing marks. All the characters of all the identity marks shall be readable by a single means, whether automated or not. In the case of automated reading of codified identity marks, character readable identification should also be provided if possible. It is necessary to me
28、asure the size of the medium to be marked since the height chosen for the characters is to be as great as possible with respect to the space available. 5.2.2 Reduced markings for small items For small-size items and those difficult to mark, the number of marks placed on the actual item can be reduce
29、d. However when reduced marking is used, a tag or the packaging should bear all the information required by the definition. For non-serialised items, replace code 3 (serial number) with code 9 (manufacturing date). In some cases, only the production sources company monogram, code 6, is acceptable. T
30、he order of preference for using reduced marking is given below: EXAMPLES Identification marks Code (see EN 4301, Table 1) Designers company code : 2 Item identification number : 1 Production sources company code : 10 Preference 1 Serial number (or manufacturing date) : 3 (or 9) Item identification
31、number : 1 Production sources company code : 10 Preference 2 Serial number (or manufacturing date) : 3 (or 9) Production sources company monogram : 6 Preference 3 Serial number (or manufacturing date) : 3 (or 9) Preference 4 Production sources company monogram : 6 BS EN 4300:20087 5.3 Selection of t
32、he marking locations 5.3.1 General The surface selected for marking shall be such as to be accessible and compatible to the marking process, and adequate to contain all the marks. For replaceable elements, the location shall be selected such that, where possible, the marks remain visible after assem
33、bly. 5.3.2 Prohibited areas The application of marks is prohibited in the following areas: proximity to fillet radius, chamfers and component edges or angled surfaces because of the risk of stress cracking; flow areas, because of the risk of flow disturbance; assembly areas e.g. welding, clamping, b
34、onding because of the risks of bearing surface defect, alignment defect, loss of clamping loads, contamination, etc.; friction or sliding areas because of the risk of seizing, stiff points, etc.; stressed areas, because of the cracks, fatigue, life cycle reduction, etc. The surface hardened (case ha
35、rdening) hence embrittled areas shall be avoided, because of the risk of fatigue failure. 5.3.3 Restricted marking area If a designer specifies a specific controlled area to contain the marking (see 6.3.2), he shall first contact manufacturing, to ensure all relevant information can be fitted into t
36、hat area. 5.3.4 For the pipe assemblies, tubing and electrical wiring A minimum of one mark shall be provided at or near one of the connection points. Where more than one mark is used on a tube run for ease of reading, inversion of every second group of marks is acceptable. 5.4 Selection of the mark
37、ing processes 5.4.1 General Whatever the environment of the component the marking process chosen must ensure a permanent marking is achieved: select the processes which can be applied to an item according to the selection of Table 3, i.e.: geometry, material, environment, function. Refer to 5.3 for
38、the marking selection criteria and to Table 2 for the design criteria as given above, according to the marking process chosen; BS EN 4300:20088 ensure that the process: presents no danger to the item: risk of distortion, corrosion, embrittlement, etc., is compatible with the items utilisation enviro
39、nment: temperature, fluids, etc., is compatible with the geometry of the location: accessibility, surface condition, etc., produces legible marks: contrast with the background, impastation, etc.; examine the possibilities of later rework or additions: upgrading of the item to a new definition, appli
40、cation of repair, etc.; if automatic identification and/or recording of the marks is required, refer to EN 4301; compatible O.C.R. marking processes are given in Table “Marking method codes, class letter and depth“ of EN 4301. 5.4.2 Permanent marking process Permanent markings ensure identification
41、during the normal service life of the item. Permanent markings are permitted on finished items only when specified by the engineering drawing from which the item is manufactured. Permanent markings shall not affect the function or serviceability of the item. Permanent marking is not recommended on c
42、ontacting surfaces, nor on surfaces which are in motion with respect to the mating surface during operation of the items. However, when permanent markings must be placed on such surfaces, all raised metal and burrs shall be removed in accordance with the requirements given on the engineering drawing
43、 of the item. Permanent markings shall not be applied on surfaces which have been chemically processed, painted, or plated unless the marking will be legible and the minimum requirements of the surface treatment process is maintained or restored. See EN 4301. 5.4.3 Temporary marking process Temporar
44、y markings ensure identification during ordinary handling and storage of items prior to assembly and use. Under certain service conditions these markings may exhibit the characteristics of permanent markings. Temporary markings shall not adversely affect the function or serviceability of the item. O
45、n items subject to intense heat, any temporary marking method which leaves heavy carbon deposit or sufficient detrimental residue such as cadmium, copper, zinc, lead, etc., should be avoided or, when used, shall be removed before subjection to intense heat. See EN 4301. 6 Information to be entered o
46、n the drawing 6.1 General The identification marking methods are described in EN 4301. 6.2 Definition of the item The drawing calls out: the identification marking codes in accordance with EN 4301, see Figure 1 (*); standard combinations of identification marks in accordance with EN 4301, see Figure
47、 2 (*); BS EN 4300:20089 EN 4301 for marking method (*); the process(es) code(s) in accordance with EN 4301, see Figure 2 (*) 2); any additional descriptors. 6.3 Location of indication marks 6.3.1 For unrestricted marking on a component surface The callout line shall show the surface that is to be m
48、arked refer to examples in Figures 1 and 2. See EN 4301 “Indication on drawings“. MARKING Code combination * 2 9 1 - 3 MARKING Code combination * B Process(es) * EN4301-02F2 Process(es) * EN4301-02F2 Note Note Figure 1 Figure 2 6.3.2 For restricted marking on a component surface The callout line sha
49、ll indicate the area the marking is to be positioned delineated by a fine dot and dash line, refer to example in Figure 3. The marking area shall be dimensioned and indicated by a fine dotted and dashed line refer to 5.3.3. See EN 4301 “Indication on drawings“. Figure 3 NOTE Designer shall not in choosing a position on the component surface to place the marking area, he shall provide minimum clearance for the margin requirements as given in EN 4301. 2) If automa
