ASD-STAN PREN 6109-2015 Aerospace series Static seal elements elastomer moulded phosphate ester resistant Technical specification (Edition P 2).pdf

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1、ASD-STAN STANDARD NORME ASD-STAN ASD-STAN NORM prEN 6109 Edition P 2 March 2015 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATION Rue Montoyer 10 - 1000 Brussels - Tel. 32 2 775 8126 - Fax. 32 2 775 8131 - www.asd-stan.org ICS: Supersedes edition P 1 of Decemb

2、er 2004 Descriptors: ENGLISH VERSION Aerospace series Static seal elements elastomer, moulded, phosphate ester resistant Technical specification Srie arospatiale Joint dtanchit statique lastomre, moul, rsistant lester phosphorique Spcification technique Luft- und Raumfahrt Statische Dichtungen Elast

3、omer, geformt, bestndig gegen Phosphorsureester Technische Lieferbedingungen This “Aerospace Series“ Prestandard has been drawn up under the responsibility of ASD-STAN (The AeroSpace and Defence Industries Association of Europe - Standardization). It is published for the needs of the European Aerosp

4、ace Industry. It has been technically approved by the experts of the concerned Domain following member comments. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-iden

5、tification of the standard. After examination and review by users and formal agreement of ASD-STAN, it will be submitted as a draft European Standard (prEN) to CEN (European Committee for Standardization) for formal vote and transformation to full European Standard (EN). The CEN national members hav

6、e then to implement the EN at national level by giving the EN the status of a national standard and by withdrawing any national standards conflicting with the EN. Edition approved for publication 1st March 2015 Comments should be sent within six months after the date of publication to ASD-STAN Mecha

7、nical Domain Copyright 2015 by ASD-STAN prEN 6109:2015 (E) 2 Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Terms and definitions . 4 4 Requirements . 6 5 Quality assurance 7 6 Preparation for delivery 11 7 Storage and storage life 12 Annex A (informative) Standard evolution form .15

8、Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Mechanical Domain. After inquiries and votes carried out in accordance with the rules of ASD-STAN defined in ASD-STANs General Process Manual, this standard has received approval for Publication. prEN 6109:2015 (E)

9、3 1 Scope This technical specification defines the requirements for moulded elastomer seal elements for use in hydraulic systems using phosphate ester fluids for aerospace application. It shall be applied in conjunction with relevant material standards unless otherwise specified on the drawing, orde

10、r, inspection schedule or contractual document. 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

11、 of the referenced document (including any amendments) applies. EN 2751, Aerospace series Storage conditions for rubber products Requirements for storage, cleaning and maintenance 1) EN 3445, Aerospace series Guidelines for the permissible storage life of rubber products 1) EN 6075, Aerospace series

12、 Static seal elements O-Ring ethylene-propylene, moulded, phosphate ester resistant ( 55 C to 107 C) Inch series 2) EN 6076, Aerospace series Static seal elements O-Ring straight thread tube fitting boss, ethylene-propylene, moulded, phosphate ester resistant ( 55 C to 107 C) Inch series 2) EN 6102,

13、 Aerospace series Fluid Hydraulic Phosphate ester-base Fire resistant Technical specification 1) EN 9102, Aerospace series Quality systems First article inspection EN 9133, Aerospace series Quality management systems Qualification procedure for aerospace standard parts EN 10204, Metallic products Ty

14、pes of inspection documents ISO 48, Rubber, vulcanized or thermoplastic Determination of hardness (hardness between 10 IRHD and 100 IRHD) ISO 188, Rubber, vulcanized or thermoplastic Accelerated ageing and heat resistance tests ISO 1817, Rubber, vulcanized or thermoplastic Determination of the effec

15、t of liquids ISO 2781, Rubber, vulcanized or thermoplastic Determination of density ISO 2859-1, Sampling procedures for inspection by attributes Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection ISO 3601-3, Fluid power systems O-rings Part 3: Quality accept

16、ance criteria ISO 23529, Rubber General procedures for preparing and conditioning test pieces for physical test methods 1) In preparation at the date of publication of this standard. 2) Published as ASD-STAN Prestandard at the date of publication of this standard. http:/www.asd-stan.org/ prEN 6109:2

17、015 (E) 4 ASTM D 1414, Standard test methods for rubber O-rings 3) ASTM D 3677, Standard test methods for rubber Identification by infrared spectrophotometry 3) ASTM E 1131, Standard test method for compositional analysis by thermogravimetry 3) 3 Terms and definitions For the purposes of this docume

18、nt, the following terms and definitions apply. 3.1 acceptance testing testing performed by the manufacturer to demonstrate that the product supplied is of the same type, form and quality as that supplied for qualification testing 3.2 batch of rubber compound batch consisting of one or more rubber co

19、mpounds of the same clearly specified composition, produced in one single production run with full trace ability 3.3 capability clause certain requirements may be assured by the manufacturer on the basis of sufficient statistical test results, i.e. special testing of the respective characteristic pe

20、r batch is not mandatory 3.4 first article inspection FAI the first article inspection is used to demonstrate that all definitions are suitable for series production and ensure that the product complies with the drawings, standards and/or specifications 3.5 individual product specification IPS the I

21、PS gives the individual information about a certain product of one manufacturer and its specific performance 3.6 material standard MS the MS lists all requirements/data limits for qualification testing and in general for acceptance testing 3.7 manufacturer company or organization manufacturing produ

22、cts 3.8 production batch batch consisting, for the purpose of the present standard, of elastomeric products originating from the same batch of rubber compound and vulcanized under the same operating conditions at one time by the manufacturer 3) Published by: ASTM National (US) American Society for T

23、esting and Materials. http:/www.astm.org/ prEN 6109:2015 (E) 5 3.9 purchaser body which purchases the product from a manufacturer or a supplier in accordance with the requirements of the user Note 1 to entry: The purchaser may also be the user. 3.10 qualification process of demonstrating that the ma

24、nufacturer and the product supplied are capable of fulfilling the specified requirements as laid down in the technical specification (TS) and the relevant MS. The proof is given by the qualification testing 3.11 qualification testing testing of representative samples manufactured in accordance with

25、the series production requirements, manufactured with specified raw materials and a frozen process, to demonstrate compliance of the product with the requirements of the TS and the relevant MS. These results are used to establish the IPS 3.12 mandated body body who officially handle the qualificatio

26、n with the manufacturer 3.13 rubber compound a homogenous mix of all the constituents of a rubber formulation, e.g. rubber gumstock, curing agents, accelerators, fillers 3.14 standard parts standard parts are all detail parts as defined by a product standard 3.15 supplier company or organization sup

27、plying products (e.g. stockist) Note 1 to entry: The supplier may also be the manufacturer. 3.16 technical specification TS the TS lists all requirements for qualification and acceptance testing including test frequency and test methods, marking, packing and shipping 3.17 user body which procures pr

28、oducts used to manufacture aircraft components under relevant contractual responsibilities. prEN 6109:2015 (E) 6 4 Requirements 4.1 General requirements 4.1.1 Manufacturing schedule The product shall be manufactured to reproducible quality and shall fulfill the requirements of the relevant MS, IPS a

29、nd this TS. The manufacturer shall define the raw materials processes and inspections in a manufacturing schedule and present this to the Mandated body/user upon request on occasion of qualification or audit. The Mandated body/user shall treat any information contained in the schedule as confidentia

30、l. Changes of the manufacturing schedule which may adversely affect the quality of the product must be stated by the manufacturer and shall be subject to written approval of the Mandated body before first delivery. If necessary Mandated body may define a re-qualification program prior to approval. T

31、he acceptance test certificate for the first delivery made after the approved changed manufacturing schedule shall contain a reference to the change. 4.1.2 Trace ability Each individual product shall be traceable to the pre-materials at all stages of manufacture and delivery. 4.1.3 Freedom of defect

32、s All products shall be free from irregularities not complying with the requirements of the MS, IPS and Subclause 4.2.2.6. Further irregularities prejudicial to the subsequent manufacture or use of products shall be the subject of further investigations with the manufacturer. 4.1.4 Workmanship The p

33、roduct specified herein shall be processed as required in order to obtain the specified quality. Any defects attributed to bad workmanship shall be cause for rejection of the specific delivery. 4.1.5 Hazardous constituents For qualification the product has to fulfill the requirements, defined in the

34、 relevant MS. For release the product has to fulfill the local requirements of the current health and safety/environmental protection laws of the countries of the purchaser/purchasers. 4.2 Technical requirements 4.2.1 Material The product shall fulfill the requirements of the relevant MS/or IPS. 4.2

35、.2 Specific 4.2.2.1 Test specimens For the minimum number of test specimens see Tables 1 and 2. Test specimens for qualification shall be O-Rings according to EN 6075 or EN 6076. If not specified otherwise in the Table 1, the cross section of the test specimen shall be between 2,62 mm and 3,53 mm (0

36、.103 inch to 0.139 inch) with an optional diameter. For acceptance testing of O-Rings and other seal elements the original parts shall be tested. prEN 6109:2015 (E) 7 4.2.2.2 Conditioning and testing The conditioning and testing of the test specimens shall comply with ISO 23529 at (23 2) C (72 3.6)

37、F and with ambient relative humidity. The time interval between vulcanization and testing shall comply with ISO 23529. 4.2.2.3 Phosphate ester test fluids For qualification testing, all phosphate ester hydraulic fluids that meet EN 6102 shall be taken. 4.2.2.4 Dimensions, tolerances and mass The dim

38、ensions, tolerances and mass shall comply with the requirements of the product standards. 4.2.2.5 Marking of parts Each seal element shall be marked with two (2) white stripes. 4.2.2.6 Surface condition 4.2.2.6.1 Trimming Mold flash shall be removed from the elastomer parts in such a manner that the

39、y conform to the requirements specified herein and on applicable drawings. The method used to trim the mold flash shall not remove the original molded finish of the elastomer part over an area wider than 25 % of the cross section of the part, but not to exceed 1,5 mm (.06 inch) maximum adjacent to t

40、he flash. 4.2.2.6.2 Sealing surfaces Sealing surfaces of elastomers shall be smooth and free from defects, blemishes or irregularities except as permitted by ISO 3601-3 Grade S. The entire surface of the seal element is considered as a sealing surface. 5 Quality assurance 5.1 Test methods 5.1.1 Gene

41、ral The manufacturer shall obtain qualification in accordance with Table 1 and EN 9133. 5.1.2 Specific 5.1.2.1 Examination of product Elastomer parts shall be carefully examined to determine conformance to the applicable product standard, workmanship, finish, trimming and marking. Inspection of the

42、seal elements shall be in accordance with 4.2.2.6. 5.1.2.2 Phosphate ester fluid wetting prior testing If wetting by a phosphate ester fluid is required in the MS, the seal elements wetting shall be done by dipping. Shake off excess fluid before testing. prEN 6109:2015 (E) 8 5.2 Manufacturers respon

43、sibility The manufacturer shall be responsible for the development and manufacture of any product submitted in accordance with this specification. 5.3 Product qualification The product tested in the qualification shall be manufactured in accordance with the same specification and manufacturing sched

44、ule as the serial products which will be delivered afterwards. The qualification is directed to the raw material specification/sources, the equipment and the processes which have been identified in the manufacturing schedule. As part of the qualification, the Mandated body reserves the right to carr

45、y out manufacturing/shop trials and/or additional tests in house or at an independent facility. Qualification to this specification includes the manufacturers acceptance to a quality-audit of the entire production procedure, from the raw material acquisition, through processing steps to release test

46、ing and the use of relevant specifications including the quality assurance documentation of the Mandated body. If required the quality-audit can be carried out in the framework of a non-disclosure agreement. All results of the qualification tests including the manufacturing schedule and approval of

47、the raw materials, the manufacturing of the specimens and the test procedures carried out shall be collected by the manufacturer in a QUALIFICATION TEST REPORT. Upon successful qualification, officially confirmed by the Mandated body, the requirements based on this qualification shall be given in th

48、e MS and IPS. Adjustment of the manufacturing schedule to accommodate improved manufacturing techniques to the state of the art is the manufacturers responsibility but may require side- or requalification to this TS, the MS and IPS. 5.3.1 Qualification testing Unless otherwise required by the MS the

49、 full qualification testing shall consist of the tests given in this standard. The test results shall demonstrate compliance with the technical requirements of this standard and the MS. For products of new materials or for manufacturers without experience of supplying for aerospace applications, this full qualification testing shall be required. If the product is already qualified by an aerospace company against a recogn