1、STD-AECMA PREN r1307-ENGL 3999 1012313 0037392 291 9 AECMA STANDARD prEN 4307 NORME AECMA Edition P I AECMA NORM December 1999 Edition approved for publication 1999-1 2-31 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA) Gulledelle 94 - B-1200 BRUXELLES - Tel. (+32) 2 775 81 1 O
2、 - Fax. (+32) 2 775 81 1 1 ICs: 49.030.50 Comments should be sent within six months after the date of publication to AECMA Gulledelle 94 8-1200 BRUXELLES Descriptors: aircraft industry, sleeve, flush head screw, corrosion resistant steel, classification, dimension, surface treatment, designation, ma
3、rking ENGLISH VERSION Aerospace se ri es Sleeves, tubular, for shear screws with flush head, in corrosion resisting steel, passivated, (0,50 mm wall thickness) Srie arospatiale Luft- und Raumfahrt Douilles tubulaires, Hlsen pour vis de cisaillement tte fraise, en acier rsistant la corrosion, paasive
4、s, (paisseur de paroi 0,50 mm) fr Senkschrauben mit Scherbeanspruchung, aus korrosionsbetndigem Stahl, passiviert, (Wanddicke 0,50 mm) This “Aerospace Senes“ Prestandard has been drawn up under the responsibility of AECMA (The European Association of Aerospace Industries). It is published on green p
5、aper for the needs of AECMA- Members. It has been technically approved by the experts of the concerned Technical Committee following comment by the Member countries. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extenf that interchangeability is
6、affected, physically or functionally, without re-identification of the standard. After examination and signature of the AECMA Standard Checking Centre (NPS) and formal agreement of the Official Services of the Member countries it will be submitted as a draft European Standard to CEN (European Commit
7、tee for Standardization) for formal vofe. _ Nota -Extra copies can be supplied by B.N.A.E. -Technopolis 54 - 199, nie Jean-Jacques Rousseau - 92138 ISSY-LES-MOULINEAUX CEDEX I I C3 Chairman Mr Visconti 0 aecma 1999 STD.AECMA PREN 4307-ENGL 1999 H LOl12313 0037393 328 Page 3 prEN 4307: 1999 I Scope T
8、his standard specifies the characteristics and technical requirements of tubular sleeves for shear screws with flush head, which may be plain or provided with a series of annular grooves, in corrosion resisting steel, passivated, with a 0,50 mm wall thickness, for maximum operating temperature 650 “
9、C, for aerospace applications. 2 Normative references IS0 2859-1 Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection EN 2175 Aerospace series - Heat resisting alloy FE-PA2602 (X4NiCrTiMoV26-15) - Solution tre
10、ated and precipitation treated - Sheet, strip and plate - 0,5 mm I a I 10 mm - Rm 2 850 MPa 1) EN 2424 Aerospace series - Marking of aerospace products EN 2516 Aerospace series - Passivation of corrosion resisting steels and decontamination of nickel base alloys 3 Terms and definitions For the purpo
11、ses of this standard, the following terms and definitions apply. 3.1 crack rupture in the matkrial which may extend in any direction and which may be intercrystalline or transcrystalline in character 3.2 seam open surface defect which is the result of the extrusion of the matrial 3.3 surface defect
12、caused by folding over metal fins or sharp corners and then rolling or forging them into the surface lap 4 Required characteristics 4.1 See figure 1 and tables 1 and 2. Dimensions and tolerances are expressed in millimetres and apply after surface treatment. Configuration - Dimensions - Masses 4.2 M
13、aterial EN 2175, received in the annealed condition and cold work during manufacture 4.3 Surface treatment EN 2516 1) Published as AECMA Prestandard at the date of publication of this standard Previous page is blank STD.AECMA PREN 4307-ENGL 1777 m LOl1231l1 0017394 Ob4 m Page 4 prEN 4307: 1999 Diame
14、ter code 060 080 Values in micrometres apply prior to surface treatment. Y7 VI DI 02 max. min. f0,3 5,999 5,96 9,7 7,994 7,955 12,7 Remove sharp edges O, 1 to 0,2. 63 max. I min. Plain form (code Y) L2 L3 L4 , IO,5 Grooved form (code “G“) a 12,994 -= 11 _1 12,97 3 3,24 - Key 1 a Z: Number of grooves
15、. The Pitch of groove = 2 Unspecified dimensions: as plain form At manufactureis option Form of groove at manufacturers ption Figure 1 Table I I 100 1 9.994 I 9,955 I 15,7 I 120 111,994 111,995 I 19,4 6,999 I 7,9741 1,5 I 1,74 I 4 I I 8,994 8,97 -1 I I I I Yb (10:ll 0.25 max. ?k L5 f 0,5 7 10 STD.AE
16、CMA PREN 11307-ENGL 3999 1012333 0037395 TTO Page 5 prEN 4307: 1999 Diameter code Table 2 060 080 I O0 120 I Form code a 1 Length Mass Page 6 prEN 4307: 1999 STD-AECMA PREN 4307-ENGL 3999 3032333 0037396 937 NOTE If necessary, the code 19005 shall be placed between the description block and the iden
17、tity block. 6 Marking EN 2424, style G 7 Technical specification 7.1 Manufacture The sleeves shall be formed by a drawing process from sheet or strip stock to form a one piece tubular section and head. 7.2 Surface appearance The sleeves shall be free from cracks, seams and laps. Under visual examina
18、tion, the sleeves may show axial flow lines in the tubular section typical of a drawn sleeve. The flow lines shall be continuous at the fillet radius. A slight visible orange peel effect is also permissible. 7.3 Sampling In conformity with IS0 2859-1, using normal or reduced inspection methods. The acceptance quality limit (AQL) is 1 %.
