AECMA PREN 3225-4-1993 Aerospace Series Heat Resisting Alloys Produced from Atomized Powder Powder Compacted Forging Stock and Parts Technical Specification Part 4 - Pre-Production.pdf

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1、CEN PRENr3225 PART*4 93 m 3404589 0050989 2T8 = AECMA STANDARD NORME AECMA AECMA NORM prEN 3225 Part 4 Edition P 1 October i993 DIT PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATERIEL AEROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - Tl. (1 1 47.36.9

2、8.76 UDC : Descriptors : ENGLISH VERSION Aerospace series Heat resisting alloys produced from atomized powder Powder compacted forging stock and parts Technical specification Part 4 - Pie-production and production parts Srie arospatiale Luft- und Raumfahrt Alliages rsistant chaud produits partir de

3、poudre atomise Poudre, produits compacts Pulver, verdichtetes destins le forge et pices Partie 4 - Pices types et pices de sries Hochwarmfesten Legierungen aus zerstubtem Pulver Schmiedevormaterial und Bauteile Teil 4 - Ausfallrnuster- und Serienbauteile Spcification technique Technische Lieferbedin

4、gungen This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA (Association Europenne des Constructeurs de Matriel Arospatial). It is published on green paper for the needs of AECMA-Members. It has been technically approved by the experts of the concerned Technical Co

5、mmittee folio wing comment by the Member countries. Subsequent to the publication of this prestandard, the technical content shall not be changed to an extent that interchangeability is affected, ph ysically or functionally, without re-identification of the standard. After examination and signature

6、of the AECMA Standard Checking Centre INPS) and formal agreement of the Official Services of the Member countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. Nota - Extra copies can be supplied by B.N.A.E. - Technopolis 54 - 199.

7、 rue Jean-Jacques Rousseau - 921 38 ICSY-LES-MOULINEAUX CEDEX Comments should be sent within six months after the date of publication to I Edition approved for publication 1993-10-29 AECMA Technopolis - 175, rue Jean-Jacques Rousseau 921 38 Issy-les-Moulineaux Cedex - FRANCE C5 Chairman Mi. Odorico

8、aecma 1993 Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-CEN PRENr3225 PART*Y 93 3404589 0050990 TIT W prEN 3225-4 Page 2 Contents Scope References P

9、re-production parts Manufacture Inspection and testing Marking Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-CEN PREN*3225 PARTS4 93 3Y04589 0050993

10、95b prEN 3225-4 Page 3 1 Scope This standard specifies the particular requirements for heat resisting alloy pre-production and production parts produced directly from atomized powder complying with EN 3225-2 or forged from compacted forging stock complying with EN 3225-3 and shall be used in conjunc

11、tion with EN 3225-1. 2 References EN 2002-1 EN 2002-2 EN 2002-5 EN 2002-7 EN 2002-16 EN 2003-8 EN 3225-1 EN 3225-2 EN 3225-3 EN 3749 Aerospace series - Test methods for metallic materials - Part 1 - Tensile testing at ambient temperature Aerospace series - Test methods for metallic materials - Part

12、2 - Tensile testing at elevated temperature Aerospace series - Test methods for metallic materials - Part 5 - Uninterrupted creep and rupture testing 2, Aerospace series - Test methods for metallic materials - Part 7 - Hardness test Aerospace series - Test methods for metallic materials - Part 16 -

13、Dye penetrant testing 2) Aerospace series - Test methods for steel, titanium, titanium alloys and heat resisting alloy products - Part 8 - Ultrasonic inspection of billets, bars, plates, and forgings 2, Aerospace series - Heat resisting alloys produced from atomized powder - Powder, compacted for in

14、g stock and parts - Technical specification - Part 1 - General requirements 18 Aerospace series - Heat resisting alloys produced from atomized powder - Powder, compacted forging stock and parts - Technical specification - Part 2 - Atomized powder l) Aerospace series - Heat resisting alloys produced

15、from atomized powder - Powder, compacted for ing stock and parts - Technical specification - Part 3 - Hot compacted forging stock 8, Aerospace series - Test method - Product in heat resisting alloy manufactured by powder metallurgy - Conditions for macrographic and micrographic examination - Atlas o

16、f structures and defects 2, 1) Published as AECMA Prestandard at the date of publication of this standard 2) In preparation at the date of publication of this standard Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo r

17、eproduction or networking permitted without license from IHS-,-,-(EN PRENr3225 PARTx4 93 3404589 0050992 892 prEN 3225-4 Page 4 3 Pre-production parts 3.1 General The inspection and testing of pre-production parts shall be carried out and recorded to allow the definition of the optimum techniques to

18、 be used for production parts. The following requirements shall be specified in the order, on the drawing, or in the inspection schedule : - Number of parts to be examined by the manufacturer and/or the purchaser; - Heat treatment condition of these parts; -Type and number of tests and inspections t

19、o be carried out (dimensions, mechanical and metallurgical properties, etc.), at least all those that will be applied on production parts at the beginning of the production; - Location and orientation of test samples. 3.2 Inspection and test report In addition to the information required by EN 3225-

20、1, the inspection and test report on the pre- production parts shall state all technical information or records allowing the evaluation of the quality of these parts, e.g. : photographs of the macro- and microscopic examination, results of dimensional measurements, etc. 3.3 Acceptance of pre-product

21、ion parts When the inspection and test results carried out on the pre-production parts are recognized by the purchaser as being satisfactory, the manufacturing and inspection schedules shall possibly be updated and completed, then frozen and accepted by the purchaser who will give his written agreem

22、ent for starting the manufacture of production parts. 4 Manufacture of production parts 4.1 Process reproducibility At the beginning of the production, the manufacturing process may undergo minor adjustments to allow the manufacturer to guarantee the reproducibility of the product with more certaint

23、y. In this case, the manufacturing schedule shall be completed and accepted by the purchaser. If at a latter stage, production parts need to be submitted to additional or different operations from those carried out on the pre-production parts, an agreement must be obtained from the purchaser who wil

24、l decide if new pre-production parts shall be produced and tested. The manufacturing and inspection schedules shall then be modified. 4.2 When a manufacturing schedule has been approved, no modification of the manufacturing method shall be allowed without a previous written agreement from the purcha

25、ser who shall decide if new pre- production parts shall be manufactured and tested. The manufacturing and process schedules shall then be modified by the manufacturer and accepted by the purchaser before they are applied to the series. Modification of the manufacturing method Where a manufacturing s

26、chedule is not required, any major change in the manufacturing process which could influence the quality of the products shall be reported to the purchaser. Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction

27、 or networking permitted without license from IHS-,-,-prEN 3225-4 Page 5 4.3 Modification of the drawing Any modification to the part requiring a revision of the drawing can lead to, at the request of the purchaser or manufacturer : - manufacture of new pre-production parts, or - modification of the

28、 manufacturing schedule and/or inspection schedule. The manufacturing and inspection schedule shall then be modified by the manufacturer and accepted by the purchaser before being applied to the series. 4.4 Straightening No straightening operation shall be permitted after final heat treatment unless

29、 previously agreed between the manufacturer and the purchaser and stated in the manufacturing schedule. 5 Inspection and testing 5.1 General The requirements that apply to production parts shall be specified in the order, on the drawing and / or on the inspection schedule in accordance with a proced

30、ure identical to that defined for pre-production parts under 3.1 of this standard. The inspection and tests used for the pre-production parts and production parts shall be carried out in accordance with the following 5.2 to 5.5. 5.2 Non destructive tests Inspection shall be carried out after a suita

31、ble chemical and / or mechanical surface preparation. 5.2.1 Dimensions and tolerances The dimensions and tolerances of the parts shall be as defined in the order. The dimensions specifically designated by the purchaser shall be checked on each part. As far as the other dimensions are concerned, the

32、capability clause shall apply. 5.2.2 External defects Two visual examinations shall be carried out on all surfaces of each part : - the first, after macrographic etching in accordance with EN 3749; - the second, after etching and penetrant flaw detection in accordance with EN 2002-1 6. The surface o

33、f the parts shall be free from defects which are not within the acceptance criteria defined in the material standard or the order, and of defects non specified but recognized as being prejudicial to further use. Local dressing of defects may be carried out by the manufacturer provided the dimensions

34、 of the product remain within the tolerance limits. Local dressing shall not affect any subsequent tests. The dressed areas shall be re-examined to check that all defects have been eliminated. Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license wit

35、h AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-CEN PREN*3225 PART*4 93 D 3404589 005099Y 665 W prEN 3225-4 Page 6 Number of parts per (N) batch 5.2.3 Internal defects N116 When required by the material standard or the order, each part shall be submitted to

36、ultrasonic inspection.The areas to be inspected shall be defined in the order. This inspection shall be carried out in accordance with EN 2003-8 unless otherwise specified in the order. each part Unless otherwise stated by the purchaser, the acceptance criteria shall be class 6 as defined by EN 2003

37、-8. This inspection can be carried out at an intermediary stage of manufacturing by agreement between the purchaser and the manufacturer. 5.2.4 Hardness tests The tests shall be made on parts at the location selected by the manufacturer unless otherwise indicated in the drawing or inspection schedul

38、e, and on tensile test pieces. Hardness shall be determined according to EN 2002-7 and the values obtained shall meet the requirements of the material standard. The hardness of parts and tensile test pieces representing the same batch shall be determined according to the same method and with the sam

39、e load. The number of parts to be inspected per batch shall comply with the requirements of table 1. Table 1 Frequency N 16 4JN 5.3 Destructive tests 5.3.1 Mechanical tests When required by the material standard or the order, mechanical testing shall be carried out in accordance with the requirement

40、s of 5.3.1.1 and 5.3.1.2. The quantity, the orientation and the location of the test pieces shall be defined in the drawing or inspection schedule. Unless otherwise specified on the drawing or in the inspection schedule, the test frequency to be applied is indicated in table 2. The results shall mee

41、t the requirements of the material standard, drawing or inspection schedule. Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-CEN PRENt3225 PARTt4 93 34

42、04589 0050995 5TL prEN 3225-4 Page 7 5.3.1 .1 Tensile tests Testing at room temperature shall be carried out in accordance with EN 2002-1. Testing at elevated temperature shall be carried out in accordance with EN 2002-2. 5.3.1.2 Creep and stress rupture tests Tests shall be carried out in accordanc

43、e with EN 2002-5. 5.3.2 Metallographic examination When required by the material standard or the order, a metallographic examination shall be carried out on a cross section in accordance with EN 3749. The tests shall be carried out at a frequency of one per batch. The grain size, structure, nature a

44、nd level of segregation as well as the inclusion content of the product shall be checked in accordance with the requirements in the material standard or the order. 5.4 Chemical analysis The analysis shall be carried out at a frequency of one per batch. If the manufacturer is able to demonstrate that

45、 the manufacturing process does not change any specific element content of the relevant powder blend, the capability clause shall apply. 5.5 Gamma prime Solvus When required by the material standard or the order, the Gamma prime Solvus shall be measured and guaranteed with a precision of f 5OC. The

46、determination of the Gamma prime Solvus shall be carried out in accordance with a procedure approved by the purchaser, such as : - calculation from the chemical composition, or - differential thermal analysis, or - micrographic examination of test pieces submitted to solution treatment at different

47、temperatures. Testing shall be carried out at a frequency of one per batch. If the manufacturer is able to demonstrate that the manufacturing process does not change any specific element content of the relevant powder blend, the capability clause shall apply. The results shall meet the requirements

48、of the material standard or the order. Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-CEN PRENw3225 PARTr4 93 m 3404589 0050996 438 m prEN 3225-4 Page

49、 8 6 Marking Each part shall bear the following identification marking : - material standard number; - delivery condition code; - drawing number; - batch number or individual number; - identification of the manufacturer and, if necessary, of the plant; - inspectors stamp. Unless otherwise specified on the drawing, in the order or inspection schedule the location and the method of marking shall be at the discretion of the ma