1、CEN PREN*qLb 94 = 3404589 ClOb2754 7TT = Edition approved for publication 1994-05-31 AECMA STANDARD NORME AECMA AECMA NORM C8 Chairman M. Williams Comments should be sent within six months after the date of publication to AECMA Technopolis - 175, rue Jean-Jacques Rousseau 92 138 Issy-les-Moulineaux
2、Cedex - FRANCE prEN 4167 Edition PI May 1994 DITE PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATRIEL AEROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - Tl. (1) 47.36.98.76 UDC : Descriptors : ENGLISH VERSION Aerospace series Clips, spring tension, thr
3、ee parts Inner clips in heat resisting steel FE-PA92HT (A286) Srie arospatiale Luft- und Raumfahrt Colliers de fixation ressort en trois parties Demi-colliers intrieurs, Rohrschellen, federnd, dreiteilig, Innenschelle aus hochwarmfestem Stahl en acier rsistant la corrosion FE-PA92HT (A2861 FE-PA92HT
4、 (A286) This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA (Association Europenne des Constructeurs de Matriel Arospatial). It is published on green paper for the needs of AECMA-Members. It has been technically approved by the experts of the concerned Technical C
5、ommittee following comment by the Member countries. Subsequent to the publication of this prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and signature o
6、f 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 Committee for Standardization) for formal vote. CEN PRENm42b7 94 = 3404589 00b2755 83b Page 3 prEN 4167 : 1994 1 Scope T
7、his standard specifies the characteristics of inner clips, three parts, spring tension, in FE-PA92HT for applications at a maximum temperature of 260 OC. They shall be assembled with parts from EN 4166 and EN 4168. 2 Normative references EN 2000 Aerospace series - Quality assurance - EN aerospace pr
8、oducts - Approval of the quality system of manufacturers EN 2424 Aerospace series - Marking of aerospace products 1) EN 2516 Aerospace series - Passivation of corrosion resistant steels and decontamination of nickel base alloys 2) EN 3638 Aerospace series - Heat resisting steel FE-PA92HT - Solution
9、treated - Sheet and strip - a I 3 mm 2) EN 4166 Aerospace series - Clips, spring tension, three parts - PTFE bushes 3) EN 4168 Aerospace series - Clips, spring tension, three parts - Outer clips in heat resisting steel FE-PA92HT (A286) 3) 3 Required characteristics 3.1 See figure 1 and table 1. Dime
10、nsions and tolerances are in millimetres, and apply after passivation. Configuration - Dimensions - Tolerances 3.2 Material EN 3638 3.3 Surface treatment EN 2516 3.4 Heat treatment Precipitation heat treated after forming 3.5 Hardness HV = 260 to 345 1) Published as AECMA Standard at the date of pub
11、lication of this standard 2) In preparation at the date of publication of this standard 3) Published as AECMA Prestandard at the date of publication of this standard Previous page is blank CEN PREN*4Lb7 94 m 3404589 0062756 772 m Diameter A code max. I min. Page 4 prEN 41 67 : 1994 B max. I min. max
12、. Break sharp edges O, 1 to 0,4 max. 5,8 I of grain I min. 5,5 - Marking - 006 008 o1 o o1 2 O1 4 Figure 1 9,2 14,5 14 11,8 11,2 15,5 15 13,8 13,2 16,4 15,9 15,8 15 17,8 17,3 17.8 17 18,7 18.2 019 93 Table 1 032 35,8 35 27,5 27 I t 004 I 73 I 7,2 I 13,6 I 13,l I :Il 1 :ir8 1 1: I lyt6 1 1 020 23,8 2
13、1,5 02 5 28,8 28 24 23,5 21,8 20,5 E f+- min. CEN PRENw4Lb7 94 3404589 0062757 607 Page 5 prEN 4167 : 1994 4 Designation EXAMPLE : Description block Identity block INNER CLIP Number of this standard Diameter code (see table 1) NOTE : If necessary, the code 19005 shall be placed between the description block and the identity block. 5 Marking EN 2424, style A, as indicated on figure 1. 6 Quality assurance EN 2000
