1、CEN PRENx302b 92 = 3404589 0039978 831 Approved by COMITE DE NORMALISATION Of A.E.C.M.A.1992-12-31 A. E. C. NI. A. STAN DARD NORME A.E.C.M.A. A.E.C.M.A. NORM The equivabnt versions in French 8nd German languages can be supplied by B.N.A.E. - Technopolis 54 - 199. NO Jean-Jacques Rousseau 92138 ISSY
2、- LES - MOULINEAUX CEDEX - FRANCE prEN 3026 Edition 1 December 1992 EDITE PAR LASSOCIATION EUROPCENNE DES CONSTRUCTEURS DE MATERIEL AEROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - Tl. (1) 47.36.98.76 UDC : Key words : ENGLISH VERSION Aerospace series Te
3、st method for dry film lubricants Corrosion test on steels specimens Srie arospatiale Luft- und Raumfahrt lubrifiants solides Trockenschmiermittelfilme Methode dessai pour films Essai de corrosion sur prouvettes en acier Prfverfahren fr Korrosionsprfung an Proben aus Stahl This “Aerospace series“ st
4、andard has been drawn up under the responsibility of AECMA (Association Europenne des Constructeurs de Matriel Arospatiall. It is published on yellow paper in three equivalent versions (English, French, GermanJ. It will be submitted as a draft European Standard to CEN (European Committee for Standar
5、dizationi for final vote. CEN PREN*302b 92 3404589 0039979 778 prEN 3026 Page 3 1 This standard specifies a test method to verify that the dry film lubricant has no corrosive effect on steels. Scope and field of application 2 References EN 2491 EN 3021 Aerospace series - Molybdenum disulphide dry fi
6、lm lubricants applied to fasteners l) Aerospace series - Molybdenum disulphide dry lubricants to be applied as a film - Technical specification 1) Aerospace series - Test method for dry film lubricants - Thickness measurement 2, EN 3032 3 Specimens and test equipment Three specimens in 0,18 % (nomin
7、al) carbon steel of approximately 75 mm x 150 mrri x 3 mm, polished on one surface to obtain a surface roughness Ra = 0,15 pm to 0,3 pm. A container with a lid, 23 filled with distilled water, or any olher equivalent equipment to meet the requirements of clause 4. 4 Procedure Degrease the specimens
8、with an appropriate solvent and dry them. Apply a dry film lubricant to EN 2491, to the polished surface of each specimen immediately afler degreasing. Verify to EN 3032 that the thickness meets the requirements of EN 3021. Place the specimens in a humid atmosphere (95 f 3) % at (23 i 2) “C for 30 h
9、. 5 Expression of results Examine the specimens visually. Any discolouration, pits or any other sign of corrosion, indicate that the dry film lubricant has a corrosive effect. 6 Test rep0 rt It shall include the following : - reference to this standard, - film designation to EN 3021, - application method to EN 2491, - curing conditions, - visual inspection results. 1 In preparation at the date of publication of this standard 2, Published as AECMA standard at the date of publication of this slantdrd Previous page is blank
