1、AECMA STANDARD prEN 4800-6 NORME AECMA Edition P 1 AECMA NORM September 2002 k!EJmbsTAm Gulledelle 94 - 8-1200 Brussels - Tel. + 32 2 775 81 10 - Fax. + 32 2 775 81 11 - www.aecma-stan.org PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES - STANDARDIZATION Edition approved for publicatio
2、n Comments should be sent within six months after the date of publication to Gulledelle 94 30 September 2002 AECMA-STAN 8-1200 BRUXELLES ICs: Descriptors: Material Domain ENGLISH VERSION Aerospace series Titanium and titanium alloys Technical specification Part 6: Pre-production and production forgi
3、ngs Srie arospatiale Luft- und Raumfahrt Titane et alliages de titane Partie 6: Pices types et pices de srie, forges et matrices Titan und Titanlegierungen Kneterzeugnisce Teil 6: Ausfallmuster- und Serienschmiedestcke Spcification technique Technische Lieferbedingungen This “Aerospace Series“ Prest
4、andard has been drawn up under the responsibility of AECMA-STAN (The European Association of Aerospace Industries - Standardization). It is published on green paper for the needs of the European Aerospace Industry. It has been technically approved by the experts of the concerned Domain following mem
5、ber 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-identification of the standard. After examination and review by users and formal agreement of AECMA-ST
6、AN it will be submitted as a draff European Standard to CEN (European Committee for Standardization) for formal vote. Page 2 prEN 4800-6: 2002 Contents Page O Introduction _. . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . , . , . , , . . . . . . . . . . . . . . . .
7、 . . . , , , . , . . . . , . . . , , , , , . , . . , . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . , ._. 3 1 Scope 3 2 Normative references 3 3 Definitions . 4 4 Wording of order _._._._. 4 5 Health and safety 5 6 Technical requirements . . . 5 . . . ._. , . . . , , . , . ._ _. Page 3
8、prEN 4800-6: 2002 O Introduction This standard is part of the series of EN metallic material standards for aerospace applications. The general organization of this series is described in EN 4258. 1 Scope This standard defines the requirements for the ordering, manufacture, testing, inspection and de
9、livery of titanium and titanium alloy pre-production and production forgings. It shall be applied when referred to and in conjunction with the EN material standard unless otherwise specified on the drawing, order or inspection schedule. 2 Normative references This European Standard incorporates by d
10、ated 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
11、 only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 2000 EN 2002-1 EN 2002-2 EN 2002-5 EN 2002-8 EN 2002-16 EN 2003-9 EN 2032-1 EN 2032-2 EN 2078 EN 2954-2 EN 3042 EN 31 14-1 EN 31 14-2 Aerospace series - Qualit
12、y assurance - EN aerospace products - Approval of the quality system of manufacturers Aerospace series - Test methods for metallic materials - Part 1 : Tensile testing at ambient temperature 1) Aerospace series - Test methods for metallic materials - Part 2: Tensile testing at elevated temperature 1
13、) Aerospace series - Test methods for metallic materials - Part 5: Uninterrupted creep and stress-rupture testing 1) Aerospace series - Metallic materials - Test methods - Part 8: Micrographic determination of grain size 1) Aerospace series - Metallic materials - Test methods - Part 16: Non-destruct
14、ive testing - Penetrant testing 1) Aerospace series - Test methods - Titanium and titanium alloys - Part 9: Determination of surface contamination 1) Aerospace series - Metallic materials - Part 1 : Conventional designation Aerospace series - Metallic materials - Part 2: Coding of metallurgical cond
15、ition in delivery condition Aerospace series - Metallic materials - Manufacturing schedule, inspection schedule, inspection and test report - Definition, general principles, preparation and approval Aerospace series - Macrostructure of titanium and titanium alloy wrought products - Part 2: Macrostru
16、cture of bar, section, forging stock and forgings 2) Aerospace series - Quality assurance - EN aerospace products - Qualification procedure Aerospace series - Test method - Microstructure of (a + ) titanium alloy wrought products - Part I : General requirements 1) Aerospace series - Test method - Mi
17、crostructure of (a + ) titanium alloy wrought products - Part 2: Microstructure of bars, sections, forging stock and forgings 1) Page 4 prEN 4800-6: 2002 EN 3683 EN 3874 EN 3976 EN 3987 EN 3988 EN 4050-1 EN 4050-4 EN 4258 EN 4259 EN 4268 EN 4800-5 TR 2410 Aerospace series - Test methods - Titanium a
18、lloy wrought products - Determination of primary a content - Point count method and line intercept method 1) Aerospace series - Test methods for metallic materials - Constant amplitude force- controlled low cycle fatigue testing 1) Aerospace series - Titanium and titanium alloys - Test method - Chem
19、ical analysis for the determination of hydrogen content 1) Aerospace series - Test method for metallic materials - Constant amplitude force- controlled high cycle fatigue testing 2) Aerospace series - Test methods for metallic materials - Constant amplitude strain- controlled low cycle fatigue testi
20、ng 1) Aerospace series - Test method for metallic materials - Ultrasonic inspection of bars, plates, forging stock and forgings - Part 1 : General requirements 1) Aerospace series - Test method for metallic materials - Ultrasonic inspection of bars, plates, forging stock and forgings - Part 4: Accep
21、tance criteria 1) Aerospace series - Metallic materials - General organization of standardization - Links between types of EN standards and their use Aerospace series - Metallic materials - Definition of general terms 1) Aerospace series - Metallic materials - Heat treatment facilities - General req
22、uirements 2) Aerospace series - Titanium and titanium alloys - Technical specification - Part 5: Forging stock Aerospace series - Metallic materials - Relationship between dimensional standards and material standards 3) 3 Definitions General definition, see EN 4259. 4 Wording of order The order shal
23、l clearly indicate: - quantities to be supplied; - dates of delivery; - material standard number; - partnumber; - delivery condition and metallurgical code of products; - dimensions and tolerances or reference to an appropriate dimensional standard; - product designation, when required; - forwarding
24、 address; - nature and type of packing, if required; - definition and frequency of any special tests and their retest procedures, if required. 1) Published as AECMA Prestandard at the date of publication of this standard 2) In preparation at the date of publication of this standard 3) Published as A
25、ECMA Technical Report at the date of publication of this standard Page 5 prEN 4800-6: 2002 5 Health and safety Products in the delivery condition shall fulfil the health and safety laws of the area of the country when and where it is to be delivered. A product safety data sheet shall be available. 6
26、 Technical requirements 6.1 General The product shall satisfy the requirements of the order, drawing inspection schedule or material standard: see table 1, line 5. The order, drawing or inspection schedule shall specify the tests to be performed upon (i) pre-forgings for qualification and/or requali
27、fication (i) serial production forgings for process control testing (Procedure X: see section 6.5) and (iii) batch release when cut-up testing or forgings is required. Unless otherwise specified on the order, drawing or inspection schedule, acceptance criteria for the tests are stated in the materia
28、l standard, the requirements for each line of which are detailed in tables 1 and 2 of this technical specification. Table 1 related to lines 1 to 29 (inclusive) of the material standard and table 2 relates to lines 30 onwards in which the sub-line format is also used. If a particular test is needed
29、but not shown in a specific line in tables 1 and 2, the requirement shall be specified on the order, drawing, inspection schedule or material standard. 6.2 Qualification requirements See line 1 O0 in table 2 of this technical specification. Qualification shall normally comprise assessment of pre-pro
30、duction forgings. See table 1, section 4.2. 6.3 Re-qualification requirements Re-qualification of serial production forgings may be required, at the purchasers discretion, in the following cases: - modification of the drawing; - use of forging stock from a different source; - modifications to the fo
31、rging stock form and/or manufacturer route; - modifications to an existing die; - use of a new (replacement) die; - modifications to the forging manufacturing route; - use of a new forging manufacturer; - when a significant time interval (usually several years) had elapsed between forging campaigns
32、for a specific part number; - when required by the purchaser for any other reason. Re-qualification testing requirements, especially location of test pieces, shall be identical to those used for the initial qualification of the pre-production forgings unless otherwise specified on the order, drawing
33、 or inspection schedule. Page 6 prEN 4800-6: 2002 Mass of forging (kg) II I mass I 2 2 25 6.4 Release requirements Release testing shall be the responsibility of the manufacturer. The sampling procedure for release testing shall be one of the following, as specified on the order, drawing or inspecti
34、on schedule. Where no procedure is specified, procedure A shall be used. - Procedure A: Separate forged test samples shall be produced from the same batch of forging stock as that used to make the serial production forgings. Procedure A may be used alone unless denoted AX on the drawing, order or in
35、spection schedule in which case it shall be applied only in conjunction with procedure X (See section 6.5). - Procedure B: Separate forged heat treatment control test samples shall be prepared which conform to the same material standard as the production forgings, but may originate from a different
36、batch of forging stock. Procedure B shall only be used when full heat treatment of the serial production forgings is carried out by the manufacturer and only in conjunction with procedure X (See section 6.5). - Procedure C: Integral test samples shall be removed from each forgings. The order, drawin
37、g of inspection schedule shall specify how many test samples shall be tested per batch. Procedure C may be used alone unless denoted CX on the drawing, order or inspection schedule in which case it shall be applied only in conjunction with procedure X (See section 6.5). - Procedure D: Test samples s
38、hall be machined from forging(s) selected from each production batch and at locations specified on the order, drawing or inspection schedule. The purchaser reserves the right to perform any of the inspections and/or tests required by the material standard, drawing, order or inspection schedule. When
39、 required, the manufactured shall inform the purchaser of the planned dates for extraction of samples and release testing in order that these operations may be witnessed. Number of forgings 5 2 O00 I1 O00 I400 I 200 As stated on the order, drawing, inspection schedule 6.5 Procedure X is process cont
40、rol procedure consisting of periodic “cut-up” testing to ensure that the serial production forgings continues to conform to the specified requirements. If procedure X is invoked by the order, drawing or inspection/manufacturing schedule and/or if procedures B, AX or CX are used for release tests (se
41、e section 6.4), forgings shall be selected from series production at the frequency stated therein. It is recommended that the maximum number of forgings manufactured between repeat “cut-up” testing conforming to procedure X shall be as stated in the following table: Process control testing (Procedur
42、e X) The testing requirements, including the location, type and size of test pieces shall be identical to those used for qualification of the pre-production. 6.6 Re tests Retests shall be required if the specified acceptance criteria are not fully met during qualification testing of pre-production f
43、orgings, process control testing (procedure X) or batch release testing. If the test product or test piece preparation is faulty, testing shall be re-applied at the original frequency after rectification of the original cause of failure. At least one of the retests shall be from forgings from which
44、the unsatisfactory result was obtained (unless already rejected by the manufacturer after suitable identification of the cause of failure). It insufficient material remains, the purchaser shall advise as to how to proceed. If all retest results fulfil the specified acceptance criteria, the pre-produ
45、ction forging qualification/process control test (procedure X) shall be deemed satisfactory or the batch shall be accepted, as appropriate. Page 7 prEN 4800-6: 2002 If one or more retest results fail to fulfil the specified acceptance criteria, the following actions shall be taken: a) For qualificat
46、ion testing of pre-production forgings, advice shall be sought from the purchaser as to whether the retest results are acceptable for that part of the forging. If so, this shall be denoted by a note on the drawing, together with values which are acceptable for that location. Alternatively, if it is
47、essential that the specified acceptance criteria are achieved at all locations, the purchaser may request modifications to be made to the manufacturer route. b) For process control testing (procedure X), the tests shall be repeated on a second forging taken as close as possible to the above in the p
48、roduction sequence and/or and extensive review shall be made of the manufacturing records of forgings made since the previous control tests. Serial production of the forging in question (and others if appropriate/deemed necessary) shall not continue until the cause of the unsatisfactory values has b
49、een ascertained and rectified. c) For batch release testing, the batch shall be either: - rejected, or - partially of fully re-heat treated if it is believed that re-heat treatment can rectify the cause of the failure and then test as a completely new batch from which the conforming products shall be accepted. The re-heat treatment shall be stated on the test and inspection report. No products or test sample shall be re-heat treated more than once. 6.7 Special tests Special tests and/or inspections may be required by the purchaser. In such cases, the nature of th
