1、STD-AECMA PREN 7001-ENGL 1998 = L0123L1 OOL5064 8TT Edition approved for publication 1998-09-30 AECMA STANDARD NORME AECMA AECMA NORM Comments should be sent within six months after the date of publication to AECMA Gulledelle 94 8-1 200 BRUXELLES prEN 7001 Edition P 1 September 1998 PUBLISHED BY THE
2、 EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMAJ Gulledelle 94 - 6-1 200 BRUXELLES - Tel. (+32) 2 775 81 1 O - Fax. (+32) 2 775 81 11 ICs: Descriptors: ENGLISH VERSION Aerospace series Process standards Rules for the drafting and presentation of surface treatment standards Srie arospatiale Luft
3、- und Raumfahrt Normes de procds Verfahrensnormen Rgles pour la prparation et ia prsentation des normes de traitement de surface Regeln fr die Erstellung und die Gestaltung von Normen ber die Behandlung von Oberflchen This “Aerospace Series“ Prestandard has been drawn up under the responsibility of
4、AECMA (The European Association of Aerospace Industries). It is published on green paper for the needs of AECMA-Members. It has been technically approved by the experts of the concerned Technical Committee following comment by the Member countries. Subsequent to the publication of this Prestandard,
5、the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and signature of the AECMA Standard Checking Centre (NPS) and formal agreement of the Official Services of the Member
6、countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. I Nota - Extra copies can be supplied by B.N.A.E. - Technopolis 54 - 199, rue Jean-Jacques Rousseau - 921 38 ISSY-LES-MOULINEAUX CEDEX C7 Chairman Mr Wright aecma 1991 Content
7、s 1. Scope Page 4 2. Normative references Page 4 3. Definitions Page 4 4. Rules for the drafting and presentation of EN Process Standards Page 5 SMP.Ref A : 1996. Previous page is blank This standard specifies the rules for the drafting and the presentation of surface treatment process standards for
8、 aerospace applications. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequen
9、t amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision . For undated references the latest edition of the publication referred to applies. IS0 31-0 IS0 31-1 IS0 31 -3 IS031 -4 IS0 31 -9 IS0 31 -1 1 IS0 1000 EN20
10、00 EN3042 General principles concerning quantities, units and symbols Quantities and units of space and time Quantities and units of Mechanics Quantities and units of heat Quantities and units of atomic and nuclear physics Mathematical signs and symbols for the use in the physical sciences and techn
11、ology SI units and recommendations for use in their multiples and of certain other units Quality assurance - EN aerospace products - Approval of the quality system of manufacturers Quality assurance - EN aerospace products - Qualification procedure. 3 Definitions For the purpose of this standard the
12、 following definitions apply:- 3.1 Process Standard A standard which defines a series of requirements and the technical procedures necessary to ensure that a process is correctly applied and controlled. 3.2 Material Standard 3.2.1 Metallic Material See EN4500 3.2.2 Non-metallic Material See EN7000 S
13、TD-AECMA PREN 7001-ENGL 1996 1012311 0015067 509 Page 5 prEN 7001 : 1996 3.3 Process Schedule This document shall state in chronological order, all the necessary operations required to achieve the technical requirements of the process standard. 3.4 Batch As defined in the relevant process standard 3
14、.5 Pre-production Batch Parts manufactured and processed to a particular processing schedule, which demonstrates that the requirements can be met and enable the processing schedule to be qualified on those parts. 4 Rules for the drafting and presentation of EN process standards Note: Symbols for qua
15、ntities and units of measurement shall be in accordance with IS0 31-0, 31-1, 31-3, 31-4, 31-9,31-11 and IS0 1000. 4.1 Page 1 : Title of the process standard The title shall give sufficient information to unambiguously identify the process and its intended application. Consequently: 1. The same title
16、 shall not be used for different process standards. 2. Overlapping of applicability of the process shall not be permitted. Each part of the title shall form one or several different lines: - Aerospace series - The family of the process - An unambiguous description and applicability of the process Wh
17、ere reference is made to the tensile strength of the substrate, then the convention to be used within EN process standards shall be based upon Rm max, where Rm max equals the maximum tensile strength (Rm) stated by the material standard. 4.2 Page 2 Blank, or contents if necessary. 4.3 Page 3 and sub
18、sequent pages The body of the standard shall commence on page 3 , using the following clause headings:- O. Introduction 1. Scope 2. Normative references 3. Definitions M M A A SMP.Ref A : 1996. STDOAECMA PREN 7001-ENGL 1998 1012311 00l150b8 445 QI Page 6 prEN 7001 : 1996 4. 5. 6. 7. 8. 9. 10. 11. 12
19、. 13. 14. Classification Apparatus and materials Information to be supplied to the processor Condition of parts prior to processing Process schedule 8.1. Pre-treatment 8.2. Treatment 8.3. Post treatment Removal of surface treatment Required characteristics Inspection Quality Assurance Health Safety
20、and environmental aspects Designations A M M M M A M A A M M M h.1 O Note :- Clauses marked O are optional M are mandatory A are if applicable. Clause O : Introduction This clause shall state :- This standard has been prepared in accordance with EN7001. Clause 1 : Scope This clause shall state :- Th
21、is standard specifies the method of - - (repeat the relevant information in the title, in a grammatical sequence that satisfies the language used) - of parts for aerospace applications. Where necessary, further information shall be added to clarify the field of applications and identify any limits o
22、f the process. This information shall be presented as follows: “The procedure is applicable to parts - (state here any relevant information concerning the intended use or limitations of the process). Clause 2 : Normative references This clause shall state:- This European Standard incorporates by dat
23、ed or undated reference, provisions from other publications. 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
24、only when incorporated in i by amendment or revision . For undated references the latest edition of the publication referred to applies. This shall be followed by a list of all documents, together with their oficial titles, to which reference is made in the text. STDmAECMA PREN 7001-ENGL 1998 101231
25、1 00150b9 381 , Page ? prEN 7001 : 1996 Clause 3 : Definitions This clause shall state:- For the purpose of this standard the following definitions shall apply:- Only define those terms which are not generally defined and are specific to a particular standard. Clause 4 : Classification When required
26、 this clause shall state the various treatment classeskategories specified in the standard. An alphabetical expression shall be used to identify the class. Clause 5 : Equipment/Apparatus and Materials This clause shall state the technical requirements relating to any equipmentiapparatus or material
27、required to undertake the process. Two cases are possible: a) The process does not require the use of any controlled equipmentiapparatus or material, in which case this clause is written as follows:- “Commonly used equipment/apparatus (and/or materials) shall be used.” or b) The process requires the
28、 use of specific equipmenVapparatus or material, e.g., vacuum vaporisation chamber, pulsating current generator, material to a specification number etc., in which case the clause shall describe the equipment/apparatus/materials together with all necessary technical requirements. Proprietary names sh
29、all not be use. Materials applicable to the process described within the standard, e.g., anodes etc., which are required to be controlled, should be fully described as part of the process control (e.g., plating solution control) identified within the process standard, however, if a material is alrea
30、dy adequately covered by an existing material standard e.g., steel shot to EN2749, than this shall be stated. Alternatively, when no material standard exists at the sponsors discretion a material standard may be created to cover the requirements. Clause 6 : information to be supplied to the processo
31、r This clause shall state ALL the necessary information to be supplied by the purchaser to the processor to enable the processor to correctly process the parts to achieve the necessary technical requirements. Clause 7 : Condition of the parts supplied to the processor This clause shall state the con
32、dition of the parts prior to the application of the process as defined within the process standard. Considerations to be addressed are:- - requirements for surface texture - any physico-chemical properties at the surface SMP.Ref A : 1996. STDmAECMA PREN 7001-ENGL 1998 LOL23LL DOL5070 OT3 ” . Page 8
33、prEN 7001 : 1996 - stress relief requirements - any requirements relating to the completion of other manufacturing operations e.g., weldinghrazing, other surface treatments, peening etc - any requirements for completion of material inspection, e.g., Non-destructive testing, grinding abuse etc Clause
34、 8 : Process schedule This clause shall state all those operations which are dependent on other considerations and shall be suitably annotated in brackets as “either when required” or ”when applicable” or by a qualifying statement relating to when they shall be applied. The order of presentation sha
35、ll be grouped under three headings as follows;- 8.1 Pre-treatment 8.2 Treatment 8.3 Post treatment The listings shall begin with the words:- “Unless otherwise agreed with the purchaser, the following process schedule is mandatory” Clause 8.1 : Pretreatment When required, this clause shall state ALL
36、the necessary pre-treatments, in correct chronological order. The description shall provide guidance on pre-treatment selections where appropriate, and shall state any limitations which may be applicable. Where there is no pre-treatment requirements the clause shall state: “No requirements”. Clause
37、8.2 : Treatment This clause shall state the treatment process. Any specific details regarding such items as, the process solution, composition control, make up instructions, material controls , impur controls, operational controls, etc., shall be detailed in a normative annex referenced by this clau
38、se. Clause 8.3 : Post treatment When required, this clause shall state ALL the necessary post treatment requirements (e.g., mechanical, chemical, physico-chemical, heat treatment etc.,) in chronological order. The wording shall cover all permitted variations. Where there are no post treatment requir
39、ements the clause shall state: “No requirements” Clause 9 : Removal of surface treatment When required, this clause shall state the condition under which the surface treatment may be removed. Clause 10 : Required characteristics This clause shall state the required Characteristics following processi
40、ng. Clause 11 : Inspection This clause comprises three elements- - Inspection requirements of the parts after processing - Inspection requirements of any test pieces - Inspection requirements relating to the process If necessary the clause may refer to a normative annex, tabulating the requirements.
41、 Clause 11.1 : Inspection requirements of the parts after processing This clause shall be sub-divided according to each characteristic described under clause 10. Against each characteristic there shall be a statement of the test method to be used to asses that characteristic. Clause 11.2 : Inspectio
42、n requirements of any test pieces This clause shall state the required definition of the test pieces and their relationship to the parts if their use is permitted in lieu of part inspection. Clause 11.3 : Inspection requirements relating to the process This clause shall state ALL the necessary requi
43、rements relating to the process, such as: - temperature calibration of heating equipment - analysis of process solutions and or materials used Clause 12 : Quality Assurance This clause shall state the requirements relating:- - Approval of the processors quality system - Qualification of the process
44、- Acceptance requirements - Reworking procedures Clausel 2.1 : Approval of the processors quality system This clause shall state:- See EN2000. SMP.Ref A : 1996. Page ,lo prEN 7001 : 1996 L01231L 0015072 97b Clause 12.2 : Qualification of the process This clause shall state:- See EN3042. If necessary
45、 a schedule of process qualification requirements shall be tabulated in a normative annex. Clause 12.3 : Acceptance requirements This clause shall state the requirements for the acceptance of production parts and/or test samples which have been surface treated under the same condition as the parts.
46、Unless otherwise stated the part shall be subjected to visual examination (see 11). Include the requirements for frequency of testing for each characteristic as required. A normative annex may be used if necessary. Alternatively, these requirements may be subjected to agreement between the processor
47、 and purchaser. Clause 12.4 : Reworking procedures When required this clause shall state the reworking procedures to be followed for parts not meeting the acceptance requirements of 12.3. Include full details of any limitations covering the parts to be reworked and details of the reworking procedure
48、, such as coating removal etc. Clause 13 : Designation Specify the designation requirements for the process as follows:- Description block Identity block Number of this standard 1 Coating class Other designationldimensional requirements Vacuum deposition of cadmium X :xx Note. If the classification given in this standard is not used the designation shall be limited to EN2535.
