1、BRITISH STANDARD AEROSPACE SERIES BS SP 172:1999 ISO 9418:1998 Aerospace Rivets, solid, in aluminium oraluminium alloys Procurement specification ICS 49.080.60BSSP 172:1999 This British Standard, havingbeen prepared under the direction of the Engineering SectorCommittee, was publishedunder the autho
2、rity ofthe Standards Committee andcomes into effect on 15 February 1999 BSI 05-1999 ISBN 0 580 30942 8 National foreword This British Standard reproduces verbatim ISO 9418:1998 and implements it as the UK national standard. The UK participation in its preparation was entrusted by Technical Committee
3、 ACE/12, Aerospace fasteners and fastening systems, to Subcommittee ACE/12/1, Aerospace fasteners and fastening systems (International), which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretat
4、ion, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which
5、implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not
6、purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside fro
7、nt cover, pages i and ii, the ISO title page, pages ii to iv, pages 1 to 9 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd.
8、 No. Date CommentsBSSP 172:1999 BSI 05-1999 i Contents Page National foreword Inside front cover Foreword iii Text of ISO 9418 1ii blankBSSP 172:1999 ii BSI 05-1999 Contents Page Foreword iii 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Quality assurance 2 4.1 General 2 4.1.1 Appro
9、val of manufacturers 2 4.1.2 Acceptance of solid rivets 2 4.2 Acceptance inspection and test conditions 2 4.3 Use of “Statistical process control (SPC)” 2 5 Requirements and test methods 3 6 Records and test reports 9 7 Certificate of compliance 9 Figure 1 8 Figure 2 9 Figure 3 9 Table 1 Technical r
10、equirements and test methods 3 Table 2 Classification of defects 6 Table 3 Double shear strength 6 Table 4 Sampling plans for the inspection of double shear strength 7 Table 5 Sampling plans for visual inspection and dimensional characteristics 7 Table 6 Sampling plans for the inspection of mechanic
11、al and metallurgical characteristics 8 Descriptors: Aircraft industry, fasteners, aluminium products, rivets, specifications, procurement specifications, shear strength, tests, acceptance testing, sampling tables, quality assurance.BSSP172:1999 BSI 05-1999 iii Foreword ISO (the International Organiz
12、ation for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established
13、 has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. I
14、nternational Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of th
15、e member bodies casting a vote. International Standard ISO 9418 was prepared by Technical Committee ISO/TC20, Aircraft and space vehicles, Subcommittee SC 4, Aerospace fastener systems.iv blankBSSP 172:1999 BSI 05-1999 1 1 Scope This International Standard specifies the characteristics and quality a
16、ssurance requirements for solid rivets made in aluminium or aluminium alloy for aerospace construction. It is applicable whenever it is referenced in a definition document. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute p
17、rovisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of
18、 the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 2859-1:1989, Sampling procedures for inspection by attributes Part 1: Sampling
19、 plans indexed by acceptable quality level (AQL) for lot-by-lot inspection. ISO 7870:1993, Control charts General guide and introduction. ISO 7966:1993, Acceptance control charts. ISO 8258:1991, Shewhart control charts. ISO 9002:1994, Quality systems Model for quality assurance in production, instal
20、lation and servicing. ISO/TR 13425:1995, Guide for the selection of statistical methods in standardization and specification. ASTM E112:1996, Standard Test Methods for Determining Average Grain Size 1) . 3 Terms and definitions For the purposes of this International Standard, the following terms and
21、 definitions apply. 3.1 batch quantity of finished rivets, manufactured using the same process, from a single material cast (single heat of alloy), having the same definition document number, diameter and length code, heat treated together to the same specified condition and produced as one continuo
22、us run 3.2 rivet wire sample length of wire, sampled at one end of the coil used for the manufacture of rivets of the batch NOTEThe rivet wire samples must undergo the same heat treatments as the rivets of the batch, at the same time. 3.3 rivet sample rivet sampled at random from the batch 3.4 defin
23、ition document document specifying directly or indirectly all the requirements for rivets NOTEThe definition document may be an International Standard, an in-house standard or a drawing. 3.5 crack rupture in the material which may extend in any direction and which may be intercrystalline or transcry
24、stalline in character 3.6 seam longitudinal open surface defect 3.7 lap surface defect caused by folding over metal fins or sharp corners and then forming them into the surface 3.8 cold shut doubling over of metal which may occur during the cold heading operation 3.9 blistering defect in the metal o
25、n or near the surface, resulting from expansion of gas in a sub-surface zone 3.10 pit small cavity in a metal surface caused by non-uniform electrodeposition or by corrosion 3.11 critical defect defect that, according to judgement and experience, is likely to result in hazardous or unsafe conditions
26、 for individuals using, maintaining, or depending upon the considered product, or that is likely to prevent performance of the function of a major end item 1) Published by: American Society for Testing and Materials (ASTM), 1916, Race street, Philadelphia, PA 19103, USA.BSSP 172:1999 2 BSI 05-1999 3
27、.12 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 3.13 minor defect defect that is not likely to reduce materially the usability of the considered product for its intended purpo
28、se, or that represents a departure from established specification having little bearing on the effective use or operation of this product 3.14 sampling plan plan according to which one or more samples are taken in order to obtain information and to reach a decision, if possible 3.15 acceptable quali
29、ty level AQL 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 NOTEVariant: quality level which in a sampling plan corresponds to a specified but relatively high probability of
30、 acceptance 4 Quality assurance 4.1 General 4.1.1 Approval of manufacturers The manufacturer shall conform to the quality assurance and approval procedures defined in ISO9002. The purpose of these procedures is to ensure that a manufacturer has a quality system and is capable of continuous productio
31、n of solid rivets complying with the specified quality requirements. The approval of the manufacturer shall be granted by the Certification Authorities, or their appointed representative, who may be the prime contractor. 4.1.2 Acceptance of solid rivets The purpose of acceptance inspection and tests
32、 of a solid rivet is to check, as simply as possible, using a method which is inexpensive but the most representative of the actual conditions of use, with the uncertainty inherent in statistical sampling, that the solid rivets satisfy the requirements of this International Standard. Acceptance insp
33、ections and tests shall be carried out by the manufacturer, or under his responsibility. The manufacturer is responsible for the quality of the solid rivets manufactured. 4.2 Acceptance inspection and test conditions Acceptance inspections and tests (requirements, methods, numbers of solid rivets) a
34、re specified in Table 1. They shall be carried out on each batch. Solid rivets shall be selected from the batch to be tested by simple random sampling. Each solid rivet may be submitted to several inspections or tests, provided that none of its characteristics has been altered during any of these in
35、spections or tests. The solid rivets to be subjected to destructive inspections or tests may be those on which non-destructive inspections or tests have been carried out. Batches declared unacceptable after the acceptance inspection shall be resubmitted for acceptance only after all the defective un
36、its have been removed and/or defects have been corrected. In this case, the attribute(s) which caused the rejection shall be verified using a sample of twice the normal size with the same acceptable level. If the reason for rejection results from the operating method, the test apparatus or from faul
37、ty heat treatment which can be rectified in a satisfactory manner, the tests may be repeated after elimination of the cause, provided that any surface treatment be removed prior to heat treatment, without being detrimental to rivet final use. A note to this effect shall be added to the corresponding
38、 inspection documents. Unless otherwise specified, the test temperature shall be the ambient temperature. 4.3 Use of “Statistical process control (SPC)” When a characteristic is obtained by a controlled statistical process, the manufacturer has the possibility, in order to declare conformity of the
39、characteristic, of refraining from the final systematic sampling provided for in this International Standard, if he is capable of formally justifying this choice by using ISO/TR 13425 and the standards quoted in it as a basis. This justification will include the following phases: analysis of the pro
40、ducts key characteristics; analysis of the risks for each implemented process; determination of the parameters and/or characteristics to be respected under SPC; determination of the capabilities of each process; drawing up an inspection plan and integration in the manufacturing process;BSSP 172:1999
41、 BSI 05-1999 3 drawing up of routes and control charts (ISO7966, ISO7870, ISO8258); use of control charts for data consolidation; determination of the audits to be run and the control to be carried out to ensure reliability of the device. To be usable in production, this process should have been val
42、idated beforehand by the qualifying body, either during the qualification phase, or a posteriori according to the case, by analyzing the justificatory file and the results of the qualification inspections such as provided for in clause5. 5 Requirements and test methods SeeTable 1. Table 1 Technical
43、requirements and test methods Subclause Characteristic Requirement Inspection and test method Classification of defects and sampling 5.1 Material In accordance with the product standard or definition document See material standard. 5.2 Dimensions In accordance with the product standard or definition
44、 document Usual instrumentsIn case of dispute, the projection method at a magnification of 25 times for diameters k 6 mm and 10 times for diameters 6 mm, shall be used as the reference method. Checks shall be made at three equidistant points around the rivet. Table 2 5.3 Manufacturing 5.3.1 Heat tre
45、atment As specified in the material standard 5.3.2 Workmanship No cracks or blistering Visual examination with or without magnification. The magnification shall be limited to six times. Table 2 Localized, non-continuous seams, laps, cold shuts, tool marks and pits having a maximum depth of 0,07 mm a
46、re permissible. Defect depth shall be measured perpendicular to a line tangent with the surface. In the event of any doubt, the test specified in 5.4.2 shall be used as the reference method. 5.3.3 Surface treatment Treatment: in accordance with the product standard or definition document; anodizing
47、thickness is not mandatory. See applicable surface treatment standard. Table 2BSSP 172:1999 4 BSI 05-1999 Table 1 Technical requirements and test methods Subclause Characteristic Requirement Inspection and test method Classification of defects and sampling 5.4 Mechanical properties 5.4.1 Double shea
48、r strength See Table 3. Will be the subject of a future InternationalStandard. Table 4 5.4.2 Drivability Test device: seeFigure 1. Table 2 Test method: a) progressively upset the protruding end, until the values specified in Figure 2 are obtained; b) examine visually without magnification. Sample de
49、finition: seeFigure 3. 5.4.2.1 Rivets in aluminium alloys 1050A, 2017A, 2117, 2119, 5056A, 7050, V 65 a Absence of cracks Test carried out at delivery condition 5.4.2.2 Rivets in aluminium alloy 2024 a Absence of cracks Test carried out within a maximum interval of 1 h after solution treatment 5.5 Metallurgical properties 5.5.1 Grain size Grain size shall be finer than 3.5 in accordance with ASTM E 112. Longitudinal cutting through the shank, polishing and etching using the appropriate reagents and then macroscopic examinatio
