1、AECMA STANDARD NORME AECMA AECMA NORM prEN 2546 Edition P 1 January 2002 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES - STANDARDIZATION (AECMA-STAN) Gulledelle 94 - 8-1200 BRUXELLES - Tel. (+32) 2 775 8110 - Fax. (+32) 2 775 81 11 ICs: Will supersede EN 2546: 1988 Descriptors: ENGLI
2、SH VERSION Aerospace series Washers, lock with radial serrations in corrosion resisting steel passivated for flight control rods Dimensions Srie arospatiale Freins stries radiales en acier rsistant la corrosion passivs pour bielles de commandes de vol Dimensions Luft- und Raumfahrt Sicherungen, radi
3、alverzahnt aus korrosionsbestndigem Stahl, passiviert fr Bediengestnge von Flugsteuerungen Mae This “Aerospace Series“ Prestandard 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 nee
4、ds of the European Aerospace Industry. It has been technically approved by the experts of the concerned Domain following member comments. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or func
5、tionally, without re-identification of the standard. After examination and review by users and formal agreement of AECMA-STAN it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. Nota - Extra copies can be supplied by B.N.A.E. - Technopol
6、is 54 - 199, rue Jean-Jacques Rousseau - 92138 ISSY-LES-MOULINEAUX CEDEX I I Edition approved for publication I Comments should be sent within six months after the date of publication to I 2002-01 -31 AECMA-STAN Gulledelle 94 8-1200 BRUXELLES I Mechanical Domain Mr Feltham I I 0 aecma 20( Page 2 prE
7、N 2546: 2002 Blank page Page 3 prEN 2546: 2002 I Scope This standard specifies the characteristics of lock washers in corrosion resisting steel, with radial serrations primarily intended for flight control rods. These lock washers are intended to immobilise the rod end in relation to the rod body, w
8、hilst allowing a precise positional adjustment. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other pubiications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For date
9、d references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 2000 EN 2516 EN 2538 3 3.1 Aerospace series - Q
10、uality assurance - EN aerospace products - Approval of the quality system of manufacturers Aerospace series - Passivation of corrosion resisting steels and decontamination of nickel base alloys Aerospace series - Steel FE-PM3801 (X5CrNiCu17-4) - Air melted - Solution treated and precipitation treate
11、d - Sheet and strip - a I 6 mm - R, 2 1 310 MPa 1) Required characteristics Dimensions - Mass Configuration shall correspond with figures 1, 2 and 3. The dimensions and masses shall conform with values quoted in tables 1 and 2. 3.2 Surface roughness Ra = 3,2 vm. 3.3 Material Steel according to EN 25
12、38. 3.4 Surface treatment Passivation according to EN 251 6. 1) Published as AECMA Prestandard at the date of publication of this standard Page 4 prEN 2546: 2002 -7 - a1 - A-A a N equidistant serrations R0,5to 0,8 R0,3t0,5 Identification mark Figure 1 - Element for rod body side - Code A Dimensions
13、in millimetres I, I B-B X a N equidistant serrations R0,5 to 0,8 R0,3 to 0,4 Identification mark Figure 2 - Element for rod end side - Code B Figure 3 -Thickness of lock washer assembly Table 1 Dimensions in millimetres Page 5 prEN 2546: 2002 N a . al+ a4 Mass lock washer Dhmeter code Number of asse
14、mbly serrations mm 9 min. I max. k 0,3 e 50 1 8742 I 8842 I 2,80 1- I I l I 08 42 8721 8821 2,38 1,8 4 Designation EXAMPLE: 14 16 3,lO 58 3,16 9,6 56 8920 90“ NOTE If necessary, the code 19005 shall be placed between description block and identity block. Lock washer Element, rod body side, according
15、 to figure 1 Element, rod end side, according to figure 2 Lock washer assembly Code A B C 5 Marking In addition to the manufacturers own marking, each lock washer and its packaging shall be marked, using the identity block as defined in clause 4 of this standard. The marking position and method are at the manufacturers option. The marking, when it is possible, shall be indelible and shall not impair the characteristics of the lock washer. 6 Qualification According to EN 2000.
