ASD-STAN PREN 2545-3-1991 Aerospace Series Titanium and Titanium Alloy Remelting Stock and Castings - Technical Specification - Part 3 - Pre-Production and Production Castings (Edi.pdf

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 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

6、Manufacture of production castings 6 7 We1 ding repair 8 Marking Annex A Annex B Annex C Annex D Annex E Scope and field of application Inspection and testing of production castings a O O a CEN PREN*2545 (PT*3)*ED*3 93 3404589 0035982 O = - prEN 2545-3 Page 3 1 The present standard defines the parti

7、cular 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 EN 2545-2. Unless otherwise required by the order, drawing or ins ection schedule, the castings

8、 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 Aerospace series - Test methods for metallic materials - Part 1 - Tensile testing at ambient tem

9、perature 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 and rupture testing 2) Aerospace series - Test methods for metallic materials - Part 16 - Dye

10、 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 alloys and heat resisting alloys - Part 10 - Sampling for determination of hydrogen content in

11、 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 and castings - Technical Specification - Part 1 - General requirements 2) Aerospace series - T

12、itanium 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) Published as AECMA pre-standard at the date of publication of the present 2) In preparation at

13、 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 standard. standard. (ASTM) , 1916 Race street, Philadelphia PA 19 103. prEN 2545-3 Page 4 3 Recommand

14、ation for 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 casting

15、s. The dimensional 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 sched

16、ule in addition 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 pr

17、operties, 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

18、 out on pre-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

19、 of dimensional 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 req

20、uired the 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.

21、 All information, no matter how minor, shall be recorded in the manufacturing schedule. CEN PREN*2545 (PT*3)*ED*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

22、. When such changes are necessary in the case of, for example : a) b) c) the purchaser shall decide if new pre-production castings shall be manufactured and tested. The manufacturing schedule and the inspection schedule shall be modified if necessary. alterations of pattern, mould material or positi

23、on of runners and risers, alterations of the casting process, alterations of the heat treatment process, 5.3 Any 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 modif

24、ication of the manufacturing schedule and/or the inspection schedule. 5.4 Manufacturing schedules and inspection 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 on

25、e of the following methods : - Castings shall be manufactured from remelting stock conforming to EN 2545-2. No other 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 inhous

26、e cast scrap and alloying elements (excluding titanium sponge), Light scrap or machining chips shall not be used. 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 con

27、sumable electrode melting defined and constant percentage of each allowed consti tuant (except al 1 oyi ng addi 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 Allo

28、ying elements may be added during melting to compensate for losses due to evaporation - Other melting processes Requirements for other melting processes shall be agreed between the manufacturer and the purchaser. CEN PREN82545 (PT*3)*ED*1 91 W 3404589 0015985 b mj prEN 2545-3 Page 6 5.6 Hot isostati

29、c 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 manufacturing schedu cycle. Mechanical test samples shall accompany the castings throughout this

30、 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 carried out only by agreement between the manufacturer and the purchaser. The manufac

31、turer 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 for chemical analyses, all inspection and testin after completion of H.I.P., heat trea

32、tment 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 the same conditions as applied to pre-production castings. 6.1 Dimensions and toleran

33、ces 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 manufacturer shall be sufficient to permit him to certify compliance with the requir

34、ements. 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 batch. 6.3 External defects 6.3.1 Castings shall be suitably fettled, dressed, cleaned

35、 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 otherwise indicated in the inspection schedule or the order, the condition of acceptance are

36、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 detection. e e o prEN 2545-3 Page 7 Isolated cavities Table 1 - Acceptance criteria

37、for external defects 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 m

38、m and distance between 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

39、 mm max. density 2 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 A

40、nnex A. containing the indication. CEN PREN*E545 (PT*3)*ED*L 91 3404589 O015987 T prEN 2545-3 Page 8 a 6.4 Internal defects 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 u

41、sed shall be as indicated in table 3, quality level 2. The inspection schedule shall include a specific instruction sheet 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 exami

42、nation of castings with wall thicknesses equal to or less than 25 mm are given in table 2. The normal standard of acceptance 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 c

43、riteria for castings with wall thicknesses greater than 25 mm shall be agreed between the manufacturer and the purchaser 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

44、they represent. 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

45、 7 5 5 2 1 1 4 3 3 5 4 4 $ 0,5 mm : none $ 0,8 mm : none 5 0,8 mm : 2 per area of 50 rmn x 50 mm - 2 1 1 4 3 3 5 4 4 h Table 2 - Acceptance criteria for internal defects, wall thickness 5 25 mm Defects shall be assessed by comparison with the maximum allowable radiographic reference plate 1 to 8 of

46、ASTM E 192-85. Number of maximum allowable radiograph as per ASTM E 192-85 Grade Wall thickness in Cype of defect :as holes I I Unacceptable Shrinkage cavities 2) B C prEN 2545-3 Page 10 6.5 Mechanical testing 6.5.1 Number, type and preparation of test samples 6.5.1.1 Test samples for tests required

47、 by the material standard, drawing or inspection schedule with reference to a quality level of table 3, shall cut from castings and/or gated to castings agreed between the manufacturer and the purchaser and indicated on the drawing or inspection schedule. In absence of any indication on the drawing

48、or inspection schedule, test samples shall be cast integrally with/or gated to castings. 6.5.1.2- When the test samples are to be cut from castings the purchaser shall define on the casting drawing or inspection schedule the location from which the test samples ,are to be taken and the properties to

49、 be achieved. 6.5.1.3 When the test samples are to be cast integrally with/or gated to castings the purchaser shall define on the casting drawing or inspection schedule the properties to be achieved if not specified in, or if different to the material standard. 6.5.1.4 Unless otherwise specified on the order, drawing, or inspection schedule the minimum test sample requirements per batch are as indicated for quality level 2 of table 3. Additional samples shall be provided for possible re-tests. 6.5.1.5 Heat treatment of test samples - Test