1、BRITISH STANDARD AEROSPACE SERIES BS EN 3833:2004 Bolts, MJ threads, in heat resisting nickel base alloy NI-PH2601 (Inconel 718), passivated Classification: 1 550 MPa (at ambient temperature) / 650 C Technical specification The European Standard EN 3833:2004 has the status of a British Standard ICS
2、49.030.20 BS EN 3833:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 5 January 2005 BSI 5 January 2005 ISBN 0 580 45182 8 National foreword This British Standard is the official English language version of EN 3833:2004. It supersedes BS
3、EN 3833:2003 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee ACE/12, Fasteners and fastening systems, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references
4、The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Stand
5、ards Online. 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 does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the
6、responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside fron
7、t cover, the EN title page, pages 2 to 28, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3833 Nove
8、mber 2004 ICS 49.030.20 Supersedes EN 3833:2003 English version Aerospace series - Bolts, MJ threads, in heat resisting nickel base alloy NI-PH2601 (Inconel 718), passivated - Classification: 1 550 MPa (at ambient temperature) / 650 C - Technical specification Srie arospatiale - Vis filetage MJ, en
9、alliage rsistant chaud base de nickel NI-PH2601 (Inconel 718), passives - Classification : 1 550 MPa ( temprature ambiante) / 650 C - Spcification technique Luft- und Raumfahrt - Schrauben, MJ-Gewinde, aus hochwarmfester Nickelbasislegierung NI-PH2601 (Inconel 718), passiviert - Klasse: 1 550 MPa (b
10、ei Raumtemperatur) / 650 C - Technische Lieferbedingungen This European Standard was approved by CEN on 11 September 2003. 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 with
11、out any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language m
12、ade by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, German
13、y, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management
14、 Centre: rue de Stassart, 36 B-1050 Brussels 2004 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3833:2004: E EN 3833:2004 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Quality assur
15、ance6 5 Requirements.6 Annex A (normative) Passivation treatment for bolts .26 Annex B (informative) Tensile, stress rupture and tension fatigue Areas and loads formulae .27 EN 3833:2004 (E) 3 Foreword This document (EN 3833:2004) has been prepared by the European Association of Aerospace Manufactur
16、ers - Standardization (AECMA-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of AECMA, prior to its presentation to CEN. This European
17、 Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2005, and conflicting national standards shall be withdrawn at the latest by May 2005. This document supersedes EN 3833:2003. According to the CEN/CENELEC In
18、ternal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Net
19、herlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 3833:2004 (E) 4 1 Scope This standard specifies the characteristics, qualification and acceptance requirements for bolts with MJ threads in NI-PH2601, passivated, for aerospace applications.
20、 Classification: 1 550 MPa 1)/650 C 2)It is applicable whenever referenced. 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 refere
21、nced document (including any amendments) applies. ISO 2859-1, Sampling procedures for inspection by attributes Part 1: Sampling schemes indexed by acceptable quality limit (AQL) for lot-by-lot inspection ISO 3452, Non-destructive testing Penetrant inspection General principles ISO 4288, Geometrical
22、Product Specifications (GPS) Surface texture: Profile method Rules and procedures for the assessment of surface texture ISO 6508-1, Metallic materials Rockwell hardness test Part 1: Test method (scales A, B, C, D, E, F, G, H, K, N, T) ISO 6892, Metallic materials Tensile testing at ambient temperatu
23、re ISO 7961, Aerospace Bolts Test methods ISO 9227, Corrosion tests in artificial atmospheres Salt spray tests EN 9133, Aerospace series Quality management systems Qualification procedure for aerospace standard parts 3)ASTM E 112-96, Standard Test Methods for Determining Average Grain Size 4)3 Terms
24、 and definitions For the purposes of this standard, the following terms and definitions apply. 3.1 batch quantity of finished parts, of the same type and same diameter, produced from the same material obtained from the same melt, manufactured in the course of the same production cycle, following the
25、 same manufacturing route and having undergone all the relevant heat treatments and surface treatments. 3.2 inspection lot quantity of parts from a single production batch with the same part number which completely defines the part 1) Minimum tensile strength of the material at ambient temperature 2
26、) Maximum test temperature of the parts 3) Published as AECMA Prestandard at the date of publication of this standard 4) Published by: American Society for Testing and Materials (ASTM), 1916 Race street, Philadelphia, PA 19103-1187, USA EN 3833:2004 (E) 5 3.3 Surface discontinuities 3.3.1 crack rupt
27、ure 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 forging them into the surface 3.3.4 inclusions non-m
28、etallic 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 3.5 simple random sampling the taking of n items from a population of N items in such a way that all possi
29、ble combinations of n items have the same probability of being chosen 3.6 critical defect a 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 pre
30、vent performance of the function of a major end item 3.7 major defect a 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 3.8 minor defect a defect that is not likely to reduce materially the usa
31、bility 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 3.9 sampling plan a plan according to which one or more samples are taken in order to obtain information and possib
32、ly to reach a decision 3.10 limiting quality (LQ 10 ) in a sampling plan, the quality limit which corresponds to a specified 10 % probability of acceptance 3.11 acceptance quality limit (AQL) a quality limit which in a sampling plan corresponds to a specified but relatively high probability of accep
33、tance It is the maximum per cent defective (or the maximum number of defects per hundred units) that, for purposes of sampling inspection can be considered satisfactory as a process average. EN 3833:2004 (E) 6 3.12 finished bolt a bolt ready for use, inclusive of any possible treatments and/or surfa
34、ce coatings, as specified in the product standard or definition document 3.13 definition document document specifying all the requirements for finished bolts 4 Quality assurance 4.1 Qualification EN 9133 Qualification inspections and tests (requirements, methods, numbers of bolts) are specified in T
35、able 1. They shall be carried out on: each type and diameter of bolt; 25 bolts selected from a single inspection lot by simple random sampling. The test programme may possibly be reduced, or the qualification of a bolt be granted without inspection or testing. Any such decision shall be based on the
36、 results obtained on similar types and diameters of bolts provided that the design and manufacturing conditions are identical. Table 2 indicates the allocation of bolt samples for the inspections and tests. 4.2 Acceptance 4.2.1 Purpose The purpose of acceptance inspections and tests is to check, as
37、simply as possible, by a method representative of actual use conditions, with the uncertainty inherent to statistical sampling, that the bolts constituting the batch satisfy the requirements of this standard. 4.2.2 Conditions Acceptance inspections and tests (requirements, methods, numbers of bolts)
38、 are specified in Table 1 ; they shall be carried out on each batch. Bolts from the batch to be tested shall be selected by simple random sampling. Each bolt may be submitted to several inspections or tests. If a more stringent inspection is deemed necessary, all or part of the qualification inspect
39、ions and tests may be performed during the acceptance inspection and testing. In this case, the number of bolts submitted to these inspections and tests is the same as that submitted for qualification inspection and tests. 4.2.3 Responsibility Acceptance inspections and tests shall be carried out by
40、 the manufacturer, or under his responsibility. 4.2.4 Inspection and test report A test report showing actual numerical values shall be provided if specified in the purchase order. 5 Requirements See Table 1. EN 3833:2004 (E) 7 Table 1 Technical requirements and test methods Clause Characteristic Re
41、quirement Inspection and test method Q/A aSample size Q 5.1 Material In accordance with the product standard or definition document Chemical analysis or certificate of compliance issued by the manufacturer of the semi-finished product A Q 25 5.2 Dimensions, tolerances and tolerances of form and posi
42、tion In accordance with the product standard or definition document Standard gauging A Tables 3 and 4 5.3 Manufacturing Q 5.3.1 Forging The head of the bolts shall be formed by hot or cold forging. If hot forged, the forging temperature shall be between 1 040 C and 1 080 C and they shall be air cool
43、ed. The equipment shall ensure a uniform temperature throughout the batch. The method of forging shall be indicated. The equipment shall be approved. Q The heat treatment medium or atmosphere shall not cause any surface contamination except as permitted by 5.5.6. Calibration of the heat treatment eq
44、uipment shall be confirmed. Any scale not removed by subsequent machining shall be removed by abrasive blasting with an appropriate equipment. Visual examination 5.3.2 Heat treatment The headed blanks shall be precipitation heat treated at (720 5) C, held at temperature for 8 h 15 min, furnace coole
45、d at (55 5) C per hour to (620 5) C, held at 620 C for 8 h 15 min, followed by air cooling or faster. Instead of the 55 C per hour cooling rate to 620 C, parts may be furnace cooled at any rate provided the time at 620 C is adjusted to give a total precipitation time of 18 h min. Examination of the
46、heat treatment specification continued EN 3833:2004 (E) 8 Table 1 (continued) Clause Characteristic Requirement Inspection and test method Q/A aSample size 5.3.3 Removal of surface contamination by machining After precipitation treatment the headed blanks shall have the shank and bearing surface of
47、the head machined: a) for the removal of all surface contamination and oxide penetration; b) to obtain a clean smooth surface. See 5.5.6. The amount of material removed (see Figure 1) shall be as little as practicable and shall not exceed the limits of Table 5. See 5.5.1. 5.3.4 Q 25 Head to shank fi
48、llet After completion of heat treatment and machining, the underhead fillet radius shall be cold rolled to remove all visual signs of machining and to create cold working. This may cause distortion which shall not exceed the values in Figure 2, unless otherwise specified on the product standard or d
49、efinition document. For parts with compound radii between head and shank (e.g. T head bolts), only the radius that blends with the head shall be cold worked, however it is acceptable for cold work to extend over the compound radius. The fillet shall not show seams or inclusions (see Table 6). Dimensional check (see 5.2) and visual examination A Tables 3 and 4 Q 5.3.5 Threads Shall be formed by a single rolling process after
