1、!? L U Y i U C - L 5 i E d O u r C a Approved by COMITE DE NORMALISATION of A.E.C.M.A. 1987-02-01 AECMA PREN207b-02 7 E L01231L 0007b53 3 E! - The equivalent versions in French and German languages can be supplied by B.NA,E., 8, rue Moreau-Vauthier 92100 BOULOGNE-BILLANCOURT - FRANCE. A.E.C.M.A. STA
2、NDARD NORME A.E.C.M.A, A.E.C.M.A. NORM prEN2076 Part 2 Edition 1 February 1987 ENGLISH VERSION Aerospace series Aluminium and magnesium alioy ingots and castings - Technical specification- - Part 2 - Ingots for remelting Srie arospatiale Luft- und Raumfahrt Lingots et pices moules Blcke und Gustcke
3、aus . en alliages daluminium et de magnsium Aluminium- und Magnesiumlegierungen - Spcification technique - - Technische Lieferbedingungen - Partie 2 - Lingots pour refusion Teil 2 - Blocke zum Umschmelzen This industrial standard for the aerospace sector has been drawn up under the responsibility of
4、 AECMA (Associa tion Europenne des Constructeurs de Matriel Arospatial). It is published on yellow paper in three equivalent versions English, French, German). It will be submitted to CEN (European Cornmittee for Standardizafion) as a draft European Standard. I AECIA PREN207b-02 7 W 10L23LL 0007b54
5、5 W prEN2076-2 Page 2 Contents 1 2 References Scope and field of application 3 Dimensions and tolerances 4 Internal defects 5 External defects 6 Chemical analysis 7 Marking a AECMA PREN207b-02 7 m 1012311 O007655 7 m prEN2076-2 Page 3 1 Scope and field of application This standard specifies the part
6、icular requirements for ingots in aluminium or magnesium alloys intended for the manufacture of castings. This standard shall be used in conjunction with EN2076-1. 2 References EN2076-1, Aerospace series - Alumin Technical specification - 3 Dimensions and tolerances um and magnesium alloy ingots and
7、 castings - Part 1 - General requirements. The form, mass, dimensions and tolerances of ingots sha agreement between the manufacturer and the purchaser. 1 be defined by The frequency of examination adopted by the manufacturer shall be sufficient to permit him to certify compliance with the requireme
8、nts. 4 Internal defects The ingots shall not contain defects prejudicial to their intended use. Unless otherwise agreed between the manufacturer and the purchaser and specified on the order or in the inspection schedule, test methods and acceptance criteria shall be at the option of the manufacturer
9、. The frequency of examination adopted by the manufacturer shall be Suff cient to permit him to certify compliance with the requirements. I AECMA PREN2076-02 87 W 1OL23Ll 0007656 9 E prEN2076-2 Page 4 5 External defects Ingots shall be vlsually examined and shall be free from corrosion, salt or slag
10、 inclusions, grease or any other foreign matter including paint, other than that approved for marking. The frequency of examination adopted by the manufacturer shall be sufficient to permit hin to certify compliance with the requirements. 6 Chemical analysis See EN2076-1. 7 Marking 7.1 Unless otherw
11、ise specified on the order, all products shall bear the fol lowing identification marking : - Material standard, - Cast number, - 1dentificati.on of the manufacturer and the plant, - Such other marking as will ensure full identification. 7.2 Unless otherwise specified on the order, the method of marking shall be at the option of the manufacturer provided the marking is permanent. 7.3 The frequency of examination adopted by the manufacturer shall be sufficient to permit him to certify compliance with the requirements.
