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 CEN PRENr3225 PART*Y 93 3404589 0050990 TIT W prEN 3225-4 Page 2 Contents Scope References Pre-production parts Manufacture Inspection and testing Marking CEN PREN*3225 PARTS4 93 3Y04589 0050993 95b prEN 3225-4 Page 3 1 Scope This standard specifies the particular requirements for heat re
9、sisting 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 conjunction with EN 3225-1. 2 References EN 2002-1 EN 2002-2 EN 2002-5 EN 2002-7 EN 2002-16 EN 2003-8
10、 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 2 - Tensile testing at elevated temperature Aerospace series - Test methods for metallic mater
11、ials - 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 - Dye penetrant testing 2) Aerospace series - Test methods for steel, titanium, titanium alloys
12、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 ing stock and parts - Technical specification - Part 1 - General requirements 18 Aerospace serie
13、s - 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 from atomized powder - Powder, compacted for ing stock and parts - Technical specification - P
14、art 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 of structures and defects 2, 1) Published as AECMA Prestandard at the date of publication of th
15、is standard 2) In preparation at the date of publication of this standard (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 tech
16、niques to 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 insp
17、ections to 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
18、 EN 3225-1, 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 pr
19、e-production 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 writt
20、en agreement 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
21、 certainty. 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 purchase
22、r who will 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 t
23、he purchaser 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 manufa
24、cturing schedule is not required, any major change in the manufacturing process which could influence the quality of the products shall be reported to the purchaser. 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 th
25、e request of the purchaser or manufacturer : - manufacture of new pre-production parts, or - modification of the 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
26、to the series. 4.4 Straightening No straightening operation shall be permitted after final heat treatment unless 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
27、 shall be specified in the order, on the drawing and / or on the inspection schedule in accordance with a procedure 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 a
28、ccordance with the following 5.2 to 5.5. 5.2 Non destructive tests Inspection shall be carried out after a suitable 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 specifical
29、ly designated by the purchaser shall be checked on each part. As far as the other dimensions are concerned, the 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
30、 EN 3749; - the second, after etching and penetrant flaw detection in accordance with EN 2002-1 6. The surface of 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 prej
31、udicial to further use. Local dressing of defects may be carried out by the manufacturer provided the dimensions 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 elimina
32、ted. 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 ultrasonic inspection.The areas to be inspected shall be defined in the order. This i
33、nspection 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 2003-8. This inspection can be carried out at an intermediary stage of manufacturing by a
34、greement 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 schedule, and on tensile test pieces. Hardness shall be determined according to EN 2002-7 an
35、d 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 same load. The number of parts to be inspected per batch shall comply with the requireme
36、nts 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 requirements of 5.3.1.1 and 5.3.1.2. The quantity, the orientation and the location of the test
37、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 meet the requirements of the material standard, drawing or inspection schedule. CEN PREN
38、t3225 PARTt4 93 3404589 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 carrie
39、d out in accordance 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, s
40、tructure, nature and 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 t
41、o demonstrate that 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 precis
42、ion of f 5OC. The 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 treat
43、ment at different 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
44、 the requirements of the material standard or the order. CEN PRENw3225 PARTr4 93 m 3404589 0050996 438 m prEN 3225-4 Page 8 6 Marking Each part shall bear the following identification marking : - material standard number; - delivery condition code; - drawing number; - batch number or individual numb
45、er; - 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 manufacturer. If the shape or dimension of the parts d
46、oes not permit all of the above markings, a reduced marking may be used by agreement between the manufacturer and the purchaser provided traceability to the required information is maintained. Otherwise, the parts shall be packed in bags or in bundles each of which shall carry a durable label bearin
47、g the information required in this clause. CEN PREN*3225 PARTU4 93 m 3404589 0050997 374 m prEN 3225-4 Page 9 EN 3225-1 - -_ Table 2 - Summary of the requirements See 5.4 See 5.5 See 3225-1 Paragraph Inspection I Testing Requirements Frequency Standard Method Appropriate method Visual 5.2.1 See 5.2.
48、1 Dimension and tolerances External defects 5.2.2 EN 3749 Penetrant flaw EN 2002-16 each part 100% 5.2.3 Ultrasonic EN 2003-8 Internal defects Hardness 5.2.4 Hardness Tensile EN 2002-7 EN 2002-1 See table 1 Tensile test at room temperature Tensile test at elevated temperature 5.3.1.1 EN 2002-2 EN 2002-5 1 per batch Creep and creep rupture 5.3.1.2 Creep and stress rupture test Metallographic examination 5.3.2 Metallographic Zhemical composition 5.4 Chemical analysis Gamma prime Solvus 5.5 See 5.5 6 Marking Visual
