1、I , AECMA PREN223b 90 m 1012311 90025b1 b m: prEN 2236 - - - A. E, C M .A, STAN DAR D NORME A.E.C.M.A. Edltion 1 A.E.C,M.A. NORM August 1990 DIT TE PAR LASSOCIATION EUROPEENNE DES CONSTRUCTEURS DE MATERIEL AEROSPATIAL 83, boulevard Malesherbes, 75008 PARIS - TtL. 45-63-82-85 UDC : 621.882.6-034.1 4:
2、620.1:629.7 Key words : Aircraft industry, hinge pins, alloy steels, characteristics, inspection, tests, sampling ENGLISH VERSION Aerospace series Pins, shear, headed, close tolerance Technical specification Srie arospatiale Luft- und Raumfahrt Pabbolzen mit Kapf Axes lisses tte et tolrances serres
3、Spcification technique Technische Lieferbedingungen .- This Aerospace series standardhas been drawn up under the responsibility ofAECMA Association Europenne des Constructeurs de Matriel Arospatial). it is published on yellow paper in three equivalent versions (English French, German). It will be su
4、bmitted as a draft European Standardto CENIEuropean Committee for Standardization) for final vote, Approved by COMITE DE NORMALISATION The equvaleiit versions In French and German languages can be supplied by B.N.A.E, 8, rue Moreau-Vautliier of A.E.C.M,At IO90-O8-24 92100 BOULOGNE-BILLANCOURT - FRAN
5、CE I I (cs aecma 1990 I This standard specifies the requirements for close tolerance, headed, shear pins in alloy steel. It is applicable provided that it is referenced on the product standard or on the definifion document, Scope and field of application 2 References IS0 2859-1, IS0 3534, IS0 5857,
6、EN 2000, Sampling procedures for inspection by attributes - Part 1 : Sampling plans indexed by acceptable quality level (AQL) for lot-by-lot inspection Statisties - Vocabulary and symbols Aerospace - Alloy steel protruding head bolts with strength classification 1 250 MPa and MJ threads - Procuremen
7、t specification Aerospace series - Quality assurance - EN aerospace products - Approval of the quality system of manufacturers II. 3 Definitions 3.1 Production batch See IS0 5857. 3.2 Inspection lot See IS0 5857. 3,3 Discontinuities 3.3.1 Crack See IS0 5857. 3.3.2 Seam See IS0 5857. 3.3.3 Lap See IS
8、Q 5857. 3.3.4 Inclusions See IS0 5857. 3.4 Sampling plan See IS0 3534. 3.5 Limiting quality (La) See IS0 3534. 3,6 Acceptable quality level (AQL) See IS0 3534. 1) Published as AECFAA standard at the date of publication of the present standard. prEN 2236 Page 4 5.2 6.3 5.3.1 5.3.2 AECMA PREN223b 90 1
9、11 LOL23Ll 0002563 T II Dimensions Manufacture He at treat nient Surface roughness 4 Approval of manufacturers 5.3.3 See EN 2000. Surface coatini 5 Characteristics, requirements, inspection and test methods See table 1. The manufacturer shall carry out the inspections and tests on each inspection lo
10、t. Unless otherwise stated, the pins shall be selected from the batch to be tested by simple sampling. Each pin may be submitted to several tests. The pins to be subjected to destructive tests may be those on which non-destructive tests have been performed, Cliapter clause Characteristic Material 5-
11、1 I Table 1 Req uir eiii en t In conforinily with the product standard or definition document In conformity with the product standard OF defiiiition docunienf Any blanks shall nut be hardened niore than twice. In conformify with the product staiidard or definition docunient In conforniity with the p
12、roduct standard or definition document _- Inspectioii nnrl test method Soe material standard. Standard gauging - Visual or tactile camparison See coating standard. Miiiriber of piiis or speciiiiens to lie tested - Table 2 Table 2 Table 2 Table 1 (continued) CI1 ap t e r or clause 6.4 5-41 - 5.4.7 Ch
13、aracteristic Mec han c al prolicriies Teiisicii Hardness Requirement _ On n pin : RpO,;!, R, and A shall be in conformity with the tequirenients of tlie niaterial standard - line 7 (heat treatment-use), or On il specinieii : When pin diniensions do not allow to perforiii a teirsion fest on the pin.
14、R,o,z, RI, and A shall be in conformity with the requjrenients uf he material sandad - line 7 (heat treatiiient use). Prior to surface coating, hardness on one 2nd sliall be in conformity with the aquireiiients of the niaterial standard - lino 7 :heat treatiiieiit use), f a hardness value is not sat
15、isfactory : repeat the heat treatment of the inspection lot ; use wice the initial nimber of specimens and nieasure hardness as specified above. Nlien a resiilt is not in conformity with the equireniants, the inspection lot shall be e je cte 6. Inspection and test method See material standard. The s
16、pecinien shall be : - of the largest possible section ; - taken from a piece.of senii-finished producf used for tlie manufacture af pins, and treated with them, See maferial standard. See niaterial standard. Nuniber of specimens to be tesfed pins or - One pin Per inspection lot One specimen Per insp
17、ection lot ;ee IS0 5857. AECMA PREN223b 90 LOL23LL 00025b5 3 prEN 2236 Page 6 Chapter ar clause 5.5 5.6 5.7 5.8 Characteristic Discontinuities Marking Packaging Lab e Ili ng Tabl 1 (continued) Require nie ii t See tablt! 3. Prior to surface coating, pins containing cracks and those showing transvers
18、e defects (Len at an angle of mare tlian IOQ with respect to the longitudinal axis) shall he rejected and destroyed. In conformity with the product standard or definition document Pins sliall tie packed in such a way as to avoid any deterioration or corrosion during handling, transport or storage. E
19、ach basic package shall contain iily pins with the sanie designation and the saine production batch nuniber. Each basic package shall dearly iiidicate, on a label, tliB designation, quantity, production batch nuiiiber and the inspection stamp, Inspection aiitl test iiiethod Loii0itudinal and circuii
20、iferential current flow inspection. The curreiit value shall be 20 A per inni of the shank dianieter. In case of doubt niicroscopic exaniiiiation (X 100). Visual inspection Visual inspection Visual iiispection Nuiiiber of pins or speciiiiens to Lie tested 100 x Table 2 100 %I 100 % Table 2 - Samplin
21、g pians 1 Prodiiction hatch size 1) Sample size 1) 51 to 90 13 91 to 150 20 151 to 280 32 281 to 500 50 501 to 1 200 80 125 200 315 500 1 201 to 3 200 3 201 to 10 O00 10 O01 to 35 000 35 001 to 150 O00 150 001 10 500 000 ao0 I 1) Iii conforiiity with IS0 2859-1 - Sampling plan for nonnal inspection.
22、 O 16 I 2 6,5 I 3 5,4 I 5 4.6 1 3,l I I Table 3 - Maximum depfh of discontinuities Dimensions in millimetrec Noniiiial diaiiieter of pin 3 4 5 6 7 8 10 Maxiinum depth 0,05 0,o 9.10 0,13 0,15 6 Rejection and re-tests - Inspection lots declared unacceptable shall be submitted for re-inspection onlyaft
23、er ail defective units aie removed and/or defects corrected. Twice the initial number of specimens shall be used for re-inspecting or re-testing the attributes causing initial rejection. The same acceptance number (Ac) shall be used, 7 Test report A certificate of conformity shall be furnished to the purchaser when requested in the order,
