AECMA PREN 2545-3-1991 Aerospace Series Titanium and Titanium Alloy Remelting Stock and Castings - Technical Specification - Part 3 - Pre-Production and Production Castings Edition.pdf

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1、CEN PRENsZ545 (PT*3)*ED*1 91 W 3404589 0015980 7 a A. E .C, M. A. STAN DARD NORME A.E.C.M.A. A.E.C.M.A. NORM prEN 2545 Part 3 Edition 1 June 1991 DITE PAR LASSOCIATION EURCPEENNE DES CONSTRUCTEURS DE MATERIEL AEROSPATIAL 88, boulevard Malesherbes, 75008 PARIS - TEL. 45-63-82-85 UDC : Key words : ENG

2、LISH VERSION Aerospace series Titanium and titanium alloy remelting stock and castings ., Technical specification - Part 3 - Pre-production and production castings Srie arospatiale Luft- und Raumfahrt Produits pour refusion et pices moules en titane et alliages de titane - Spcification technique - P

3、artie 3 - Pices types Vormaterial und Gupstcke aus Titan und Titanlegierungen - Technische Lieferbedngungen - Teil 3 - Ausfallmuster- und et pices de srie Seriengustcke This *Aerospace series standard has been drawn up under the responsibility ofAECMA (Association Europenne des Constructeurs de Matr

4、iel Arospatial). It is published on yellow paper in three equivalent versions (English, French German). It will be submitted as a draft European Standard to CEN (European Committee for Standardization) for final vote. Approved by The eiiiiivaleni versions in French and Gornian languages Ciin be supp

5、lied - Technopolis 54 . 199, rue Jean-Jacques fioussoaii of A.E.C.M.A. 1991-06-25 92139 ISSY LES MOULINCAUX CEDEX - FHARCE 0 aecma 1991 Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permit

6、ted without license from IHS-,-,-CEN PREN*K25Y5 (PT*3)*ED*L 91 m 3404589 OOL598L 9 m prEN 2545-3 Page 2 Contents 1 2 References 3 Recommandation for casting development 4 Pre-production castings 5 Manufacture of production castings 6 7 We1 ding repair 8 Marking Annex A Annex B Annex C Annex D Annex

7、E Scope and field of application Inspection and testing of production castings a O O a 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*2545 (P

8、T*3)*ED*3 93 3404589 0035982 O = - prEN 2545-3 Page 3 1 The present standard defines the particular requi rements for pre-production and production castings in titanium and titanium alloys. This standard shall be used in conjunction with EN 2545-1. Where remelting stock is used it shall conform to E

9、N 2545-2. Unless otherwise required by the order, drawing or ins ection schedule, the castings shall be supplied to quality level 2 (see table 3 B . 2 References Scope and field of application EN 2002-1 EN 2002-2 EN 2002-5 EH 2002-16 EN 2002-21 EN 2003-10 EN 2078 EN 2545-1 EN 2545-2 ASTM E 192-85 Ae

10、rospace 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 eievated temperature 1) Aerospace series - Test methods for metallic materials - Part 5 - Uninterrupted creep

11、 and rupture testing 2) Aerospace series - Test methods for metallic materials - Part 16 - Dye penetrant testing 2) Aerospace series - Test methods for metallic materials - Part 21 - Radiographic testing on cast components 1) Aerospace series - Test methods for products in steel, titanium, titanium

12、alloys and heat resisting alloys - Part 10 - Sampling for determination of hydrogen content in titanium and titanium alloys 2) Manufacturing schedule, inspection schedule and inspection report - General definitions - Aerospace series 3) Aerospace series - Titanium and titanium alloy remelting stock

13、and castings - Technical Specification - Part 1 - General requirements 2) Aerospace series - Titanium and titanium alloy remelting stock and castings - Technical specification - Part 2 - Remelting stock 2) Standard reference radiographs of investment steel castings of aerospace appl i cations 4) 1)

14、Published as AECMA pre-standard at the date of publication of the present 2) In preparation at the date of publication of the present standard. 3) Published as AECMA Standard at the date of publication of the present 4) This standard is published by American Society for Testing and Materials standar

15、d. standard. (ASTM) , 1916 Race street, Philadelphia PA 19 103. 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-,-,-prEN 2545-3 Page 4 3 Recommandation for

16、 casting development It is strongly recommended that the technical representative of the manufacturer be given the opportunity to examine the casting drawing at the initial stages of design and td advise on the optimum design which will facilitate consistent production of acceptable castings. The di

17、mensional tolerances of the castings shall be as agreed between the purchaser and the manufacturer and indicated on the drawing or the inspection schedule. 4 Pre-production castings 4.1 General 4.1.1 The following requirements shall be specified on the order, drawing and/or inspection schedule in ad

18、dition to those specified in EN 2545-1 : - Number of castings to be examined - Who shall perform the examination - Heat treatment condition - Type and frequency of inspection and testing necessary to evaluate and qualify the manufacturing process (dimensions, mechanical and metallurgical properties,

19、 etc. ). 4.1.2 The inspection and testing of pre-production castings shall be carried out and recorded to allow the definition of the optimum techniques to be used for production castings. 4.1.3 include those which will be carried out on production castings. The inspection and tests carried out on p

20、re-production castings shall 4.2 Inspection and test report In addition to the information required by EN 2078, the inspection and test report on the pre-production castings chal 1 provide all technical information to allow evaluation of the quality of these parts, e.g. radiographs, results of dimen

21、sional measurements, . 4.3 Acceptance of pre-production castings When all inspection and test results relative to pre-production castings have been reported and accepted as satisfactory, the purchaser shall give his written agreement for series production. The inspection schedule and if required the

22、 manufacturing schedule shall be agreed between the manufacturer and the purchaser. 5 Manufacture of production castings 5.1 At the start of production, the manufacturing schedule may be completed to allow the manufacturer to guarantee the reproducibility of the product with more certainty. All info

23、rmation, no matter how minor, shall be recorded in the manufacturing 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 PREN*2545 (PT*3)*ED*

24、L 91 3404589 0015984 4 = prEN 2545-3 Page 5 5.2 When a manufacturing schedule has been agreed, no change in manufacturing method shall be made without the written approval of the purchaser. When such changes are necessary in the case of, for example : a) b) c) the purchaser shall decide if new pre-p

25、roduction castings shall be manufactured and tested. The manufacturing schedule and the inspection schedule shall be modified if necessary. alterations of pattern, mould material or position of runners and risers, alterations of the casting process, alterations of the heat treatment process, 5.3 Any

26、 change in the form of the casting requiring a new or revised drawing may at the purchasers or manufacturers request result in : - - manufacturing of new pre-producti on castings, or modification of the manufacturing schedule and/or the inspection schedule. 5.4 Manufacturing schedules and inspection

27、 schedules, which are modified during production shall be subjected to the same approval process as the original documents, 5.5 Manufacture Castings shall be poured from a melt, made by one of the following methods : - Castings shall be manufactured from remelting stock conforming to EN 2545-2. No o

28、ther material shall be introduced into the furnace during melting. - Electron beam melting Charges shall consist only of remelting stock conforming to EN 2545-2, approved wrought or inhouse cast scrap and alloying elements (excluding titanium sponge), Light scrap or machining chips shall not be used

29、. All scrap shall be grouped into identified batches, The charges used for the manufacture of castings shall be constituted in accordance with one of the following methods : Vacuum arc consumable electrode melting defined and constant percentage of each allowed consti tuant (except al 1 oyi ng addi

30、ti ons) , . proportions of each allowed constituant at the option of the manufacturer. Unless otherwise specified on the order or manufacturing schedule this method shall be applied I Alloying elements may be added during melting to compensate for losses due to evaporation - Other melting processes

31、Requirements for other melting processes shall be agreed between the manufacturer and the purchaser. 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-,-,-CE

32、N PREN82545 (PT*3)*ED*1 91 W 3404589 0015985 b mj prEN 2545-3 Page 6 5.6 Hot isostatic pressing (H.I.P.) Unless otherwise specified on the order, drawing or inspection schedule, castings shall be submitted to hot isostatic pressing, The parameters of this operation shall be stated on the manufacturi

33、ng schedu cycle. Mechanical test samples shall accompany the castings throughout this 5.7 Heat treatment Unless otherwise agreed, castings and their representative test samp heat treated under vacuum or in inert gas. 5.8 Correction of distortion es sha al 1 e. 1 be Correction of distortion shall be

34、carried out only by agreement between the manufacturer and the purchaser. The manufacturer shall specify the conditions under which such correction is to be carried out, subject to any provisions made by the purchaser. The method agreed shall be incorporated in the manufacturing schedule, 6 Except f

35、or chemical analyses, all inspection and testin after completion of H.I.P., heat treatment and, if operations and correction of distortion. Inspection and testing of production castings shall be performed appropriate , repai r Inspection and testing shall be carried out on production castings under

36、the same conditions as applied to pre-production castings. 6.1 Dimensions and tolerances They shall conform with the drawing or inspection schedule. The dimensions specially indicated by the purchaser shall be checked on every casting. For other dimensions the frequency of examination adopted by the

37、 manufacturer shall be sufficient to permit him to certify compliance with the requirements. 6.2 Chemical composition In addition to EN 2545-1, chemical composition shall be determined on samples : cast integrally with/or gated to castings and cut from solidified material at a frequency of one per b

38、atch. 6.3 External defects 6.3.1 Castings shall be suitably fettled, dressed, cleaned and etched, to enable inspection to be carried out in a satisfactory manner. 6.3.2 Each casting shall be examined for surface defects by visual inspection and penetrant flaw detection to EN 2002-16. Unless otherwis

39、e indicated in the inspection schedule or the order, the condition of acceptance are those corresponding to table 1 - grade B. 6.3.3 Surface defects may be removed by local dressing provided the castings are subsequently within the dimensional tolerances. Dressing shall be followed by penetrant flaw

40、 detection. e e o 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-,-,-prEN 2545-3 Page 7 Isolated cavities Table 1 - Acceptance criteria for external defec

41、ts Accepted if depth 5 15 % of the wall thickness and 0,5 mm max., and Grade C I Grade B 1 Grade A Isolated :racks, cracklike in- Jications, laps, cold shuts, perforation max. density 5 per area of 60 mm x 60 mm Rejected None None Local protuberances (Accepted if the height 5 0,5 mm and distance bet

42、ween 2 protuberances 25 mm N1 N2 Al A2 Accepted if the height 5 0,25 uun I Residual feeder height Excess of metal at parting line Accepted if the height 5 Q,75 mm and if sharp edges are removed by dressing (visual only) Penetrant indications round Penetrant indications linear 5 0,s mm max. density 2

43、 per area of 25 mm x 25 mm 1) 5 0,8 mm max. density 4 per area of 25 mm x 25 mm Cluster I None c1 5 1,2 mm I) max. density 6 per area of 25 mm x 25 mm c2 11 I2 Nest Aligned Rejected 1) Indications with 5 0,3 mm shall not be considered. is the minimum diameter of the circle 2) See Annex A. containing

44、 the indication. 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*E545 (PT*3)*ED*L 91 3404589 O015987 T prEN 2545-3 Page 8 a 6.4 Internal defec

45、ts Castings shall be radiographically examined in accordance with EN 2002-21. Unless otherwise specified on the drawing or inspection schedule, the technique and frequency to be used shall be as indicated in table 3, quality level 2. The inspection schedule shall include a specific instruction sheet

46、 detailing the radiographic technique. 6.4.1 Unless otherwise specified or agreed between the purchaser and manufacturer to use annex B, acceptance criteria for radiographic examination of castings with wall thicknesses equal to or less than 25 mm are given in table 2. The normal standard of accepta

47、nce shall conform to grade B of table 2, unless alternative general or localised levels are agreed and defined on the drawing or in the inspection schedule. 6.4.2 The acceptance criteria for castings with wall thicknesses greater than 25 mm shall be agreed between the manufacturer and the purchaser

48、and stated on the order, drawing or inspection schedule. 0 6.4.3 Unless otherwise agreed, all radiographs shall be forwarded to the purchaser, suitably identified to the castings they represent. Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license w

49、ith AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-CEN PREN*2545 (PT*3)*ED*L 9% 3404589 OOL5988 I Shrinkage sponge Shrinkage dentritic Inclusions (of higher or JAR- process lower density 3) 4) Inclusions of 5) higher density EBM - process 5) Inclusions of lower density 3) prEN 2545-3 Page 9 Unacceptable 4 2 2 5 3 3 Unacceptable 5 4 4 7 5 5 2 1