《BS-EN-3915-2008.pdf》由会员分享，可在线阅读，更多相关《BS-EN-3915-2008.pdf（22页珍藏版）》请在三一文库上搜索。
1、BRITISH STANDARD BS EN 3915:2008 Aerospace series Insert, thin wall, self-locking, MJ threads, in heat resisting nickel base alloy NI-PH2601 (NI-P100HT, Inconel 718), for salvage of components Classification: 1 275 MPa (at ambient temperature) / 550 C Technical specification ICS 49.030.99 ? Copyrigh
2、t British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 20:31:02 MDTNo reproduction or networking permitted without license from IHS -,-,- BS EN 3915:2008 This British Standard was published under the authori
3、ty of the Standards Policy and Strategy Committee on 30 May 2008 BSI 2008 ISBN 978 0 580 60982 4 National foreword This British Standard is the UK implementation of EN 3915:2008. The UK participation in its preparation was entrusted to Technical Committee ACE/12, Aerospace fasteners and fastening sy
4、stems. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immun
5、ity from legal obligations. Amendments/corrigenda issued since publication DateComments Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 20:31:02 MDTNo reproduction or networking permitted with
6、out license from IHS -,-,- EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3915 April 2008 ICS 49.030.99 English Version Aerospace series - Insert, thin wall, self-locking, MJ threads, in heat resisting nickel base alloy NI-PH2601 (NI-P100HT, Inconel 718), for salvage of components - Classifica
7、tion: 1 275 MPa (at ambient temperature) / 550 C - Technical specification Srie arospatiale - Douilles filetes, paroi mince, freinage interne, filetage MJ, en alliage rsistant chaud base de nickel NI-PH2601 (NI-P100HT, Inconel 718), pour rcupration - Classification : 1 275 MPa ( temprature ambiante)
8、 / 550 C - Spcification technique Luft- und Raumfahrt - Gewindeeinstze, dnnwandig, selbstsichernd, MJ-Gewinde, aus hochwarmfester Nickelbasislegierung NI-PH2601 (NI-P100HT, Inconel 718), zur Nacharbeit von Bauteilen - Klasse: 1 275 MPa (bei Raumtemperatur) / 550 C - Technische Lieferbedingungen This
9、 European Standard was approved by CEN on 29 February 2008. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical refere
10、nces concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member i
11、nto its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latv
12、ia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brus
13、sels 2008 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3915:2008: E Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 20:3
14、1:02 MDTNo reproduction or networking permitted without license from IHS -,-,- 2 Contents Page Foreword3 1 Scope 4 2 Normative references4 3 Terms and definitions .5 4 Quality assurance7 4.1 Qualification.7 4.1.1 Purpose.7 4.1.2 EN 9133.7 4.2 Acceptance.7 4.2.1 Purpose.7 4.2.2 Conditions8 4.2.3 Resp
15、onsibility 8 4.2.4 Inspection and test report.8 5 Requirements.8 BS EN 3915:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 20:31:02 MDTNo reproduction or networking permitted without lic
16、ense from IHS -,-,- 3 Foreword This document (EN 3915:2008) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of
17、 the National Associations and the Official Services of the member countries of ASD, prior to its presentation to CEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2008, and conflicting
18、 national standards shall be withdrawn at the latest by October 2008. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the
19、 CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuani
20、a, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 3915:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale
21、, 08/14/2008 20:31:02 MDTNo reproduction or networking permitted without license from IHS -,-,- 4 1 Scope This standard specifies the characteristics, qualification and acceptance requirements for self-locking thin wall salvage inserts with MJ threads in NI-PH2601 (NI-P100HT). Classification: 1 275
22、MPa 1) / 550 C 2). 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2404
23、 3), Heat resisting nickel base alloy NI-P100-HT Solution treated and precipitation treated Bars Aerospace series. 4) EN 3298, Aerospace series Inserts, thin wall, self-locking Installation and removal procedure. EN 3676, Aerospace series Inserts, thin wall, self-locking Design standard. EN 4376, Ae
24、rospace series Heat resisting alloy NI-PH2601 (NiCr19Fe19Nb5Mo3) Solution treated and precipitation treated Bar and section De 200 mm. 5) EN 4377, Aerospace series Heat resisting alloy NI-PH2601 (NiCr19Fe19Nb5Mo3) Non heat treated Forging stock a or D 300 mm. 5) EN 9133, Aerospace series Quality man
25、agement systems Qualification procedure for aerospace standard parts. EN ISO 4288, Geometrical Product Specifications (GPS) Surface texture: Profile method Rules and procedures for the assessment of surface texture (ISO 4288:1996). ISO 2859-1, Sampling procedures for inspection by attributes Part 1:
26、 Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection. ISO 3452, Non-destructive testing Penetrant inspection General principles. ISO 3534:1977, Statistics Vocabulary and symbols. ISO 5855-2, Aerospace MJ threads Part 2: Limit dimensions for bolts and nuts. ISO 8642,
27、Aerospace Self-locking nuts with maximum operating temperature greater than 425 C Test methods. 1) The strength class of the insert is equal to the minimum tensile stress which the insert is able to withstand at ambient temperature without breaking or cracking when tested with a bolt of higher stren
28、gth class. 2) Maximum test temperature of the parts. 3) Inactive for new designation, see EN 4376 and EN 4377. 4) Published as ASD Standard at the date of publication of this standard. 5) Published as ASD Prestandard at the date of publication of this standard. BS EN 3915:2008 Copyright British Stan
29、dards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 20:31:02 MDTNo reproduction or networking permitted without license from IHS -,-,- 5 ASTM E 112-96, Standard test methods for determining average grain size. 6) AMS 4
30、117, Aluminum alloy, rolled or cold finished bars, rods, and wire and flash welded rings, 1.0Mg 0.60Si 0.28Cu 0.20Cr, solution and precipitation heat treated. 7) AMS-QQ-A-225/8, Aluminum alloy 6061, bar, rod, wire, and special shapes; rolled, drawn, or cold finished. 7) 3 Terms and definitions For t
31、he purposes of this document, the following terms and definitions apply. 3.1 production batch quantity of finished thin wall salvage inserts manufactured, using the same process, from a single material cast (single heat of alloy), having the same number (of product standard or definition document),
32、thread code and diameter, heat treated together to the same specified condition and produced as one continuous run 3.2 inspection lot quantity of thin wall salvage inserts from a single production batch with same number (of product standard or definition document) which completely defines the thin w
33、all insert 3.3 Discontinuities 3.3.1 crack rupture in the material which may extend in any direction and which may be intercrystalline or transcrystalline in character 3.3.2 seam open surface defect 3.3.3 lap surface defect caused by folding over metal fins or sharp corners and then rolling or forgi
34、ng them into the surface 3.3.4 inclusions non-metallic particles originating from the material manufacturing process. These particles may be isolated or arranged in strings. 3.4 test temperature ambient temperature, unless otherwise specified 6) Published by: American Society for Testing and Materia
35、ls (ASTM), 100 Barr Harbor Drive,. PO Box C700, West Conshohocken, PA 19428-2959 USA. 7) Published by: Society of Automotive Engineers, Inc. (SAE), 400 Commonwealth Drive, Warrendale, PA 15096-0001, USA. BS EN 3915:2008 Copyright British Standards Institution Provided by IHS under license with BSI -
36、 Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 20:31:02 MDTNo reproduction or networking permitted without license from IHS -,-,- 6 3.5 single random sampling taking of n items from a population of N items in such a way that all possible combinations of n items have the
37、same possibility of being chosen ISO 3534, see definition 3.6 critical defect defect that, according to judgement and experience, is likely to result in hazardous or unsafe conditions for individuals using, maintaining or depending upon the considered product, or that is likely to prevent performanc
38、e of the function of a major end item ISO 3534, see definition 3.7 major defect defect other than critical, that is likely to result in a failure or to reduce materially the usability of the considered product for its intended purpose ISO 3534, see definition 3.8 minor defect defect that is not like
39、ly to reduce materially the usability of the considered product for its intended purpose, or that is a departure from established specification having little bearing on the effective use or operation of this product ISO 3534, see definition 3.9 sampling plan plan according to which one or more sampl
40、es are taken in order to obtain information and possibly to reach a decision ISO 3534, see definition 3.10 limiting quality (LQ10) in a sampling plan, the quality level which corresponds to the specified 10 % probability of acceptance 3.11 acceptable quality level (AQL) quality level which in a samp
41、ling plan corresponds to a specified but relatively high probability of acceptance It is the maximum percent defective (or the maximum number of defects per hundred units) that, for purposes of sampling inspection can be considered satisfactory as a process average. 3.12 finished thin wall insert th
42、in wall insert ready for use, inclusive of any possible treatments and/or surface coatings, as specified in the product standard or definition document 3.13 definition document document specifying all the requirements for finished thin wall inserts BS EN 3915:2008 Copyright British Standards Institu
43、tion Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 20:31:02 MDTNo reproduction or networking permitted without license from IHS -,-,- 7 3.14 self-locking torque torque to be applied to the bolt to maintain its movement of rotation
44、 in relation to the associated part, the assembly being under no axial load and the thin wall insert locking device being completely engaged with the bolt (minimum protrusion of two pitches, including the end chamfer) 3.15 seating torque tightening torque to be applied to the thin wall insert and bo
45、lt assembly to introduce or to increase the axial load in the assembly 3.16 unseating torque untightening torque to be applied to the thin wall insert and bolt assembly to reduce or remove the axial load in the assembly 3.17 breakaway torque torque required to start unscrewing the bolt with respect
46、to the thin wall salvage insert, with the insert locking device still fully engaged on the bolt, but after the axial load in the assembly has been removed by unscrewing half a turn followed by a halt in rotational movement 3.18 salvage insert oversize version of a thin wall insert. This allows the s
47、alvage of components with damaged threads, out of position holes, etc. 4 Quality assurance 4.1 Qualification 4.1.1 Purpose The purpose of qualification tests is to ensure that the insert design and insert manufacturing conditions allow the insert to comply with the requirements of this standard. 4.1
48、.2 EN 9133 Qualification inspections and tests (requirements, methods, numbers of thin wall salvage inserts) are specified in Table 1. They shall be carried out on: each type and diameter of thin wall insert, 25 thin wall inserts selected from a single inspection lot by simple random sampling. The test programme may possibly be reduced,