ISO-7866-1999.pdf
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1、A Reference number ISO 7866:1999(E) INTERNATIONAL STANDARD ISO 7866 First edition 1999-06-15 Gas cylinders Refillable seamless aluminium alloy gas cylinders Design, construction and testing Bouteilles gaz Bouteilles sans soudure en alliage daluminium destines tre recharges Conception, construction e
2、t essais ISO 7866:1999(E) ISO 1999 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International O
3、rganization for Standardization Case postale 56 CH-1211 Genve 20 Switzerland Internetisoiso.ch Printed in Switzerland ii ContentsPage 1 Scope1 2 Normative references1 3 Terms and definitions .2 4 Symbols2 5 Inspection and testing.3 6 Materials .3 7 Design.6 8 Construction and workmanship.10 9 Type a
4、pproval procedure11 10 Batch tests13 11 Tests on every cylinder.18 12 Certification20 13 Marking.20 Annex A (normative) Corrosion tests .21 Annex B (normative) Test method to determined sustained-load-cracking resistance of aluminium alloy cylinders31 Annex C (informative) Typical type approval cert
5、ificate .38 Annex D (informative) Acceptance certificate39 Bibliography41 ISOISO 7866:1999(E) iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally ca
6、rried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established 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
7、. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical com
8、mittees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 7866 was prepared by Technical Committee ISO/TC 58, Gas cylinders, Subcommittee SC 3, Cylinder design. A
9、nnexes A and B form a normative part of this International Standard. Annexes C and D are for information only. -,-,- ISO 7866:1999(E) ISO iv Introduction The purpose of this International Standard is to provide a specification for the design, manufacture, inspection and testing of a seamless alumini
10、um cylinder for worldwide usage. The objective is to balance design and economic efficiency against international acceptance and universal utility. This International Standard aims to eliminate the concern about climate, duplicate inspections and restrictions currently existing because of lack of de
11、finitive International Standards. This International Standard should not be construed as reflecting on the suitability of the practices of any nation or region. -,-,- INTERNATIONAL STANDARD ISOISO 7866:1999(E) 1 Gas cylinders Refillable seamless aluminium alloy gas cylinders Design, construction and
12、 testing 1 Scope This International Standard specifies minimum requirements for the material, design, construction and workmanship, manufacturing processes and tests at manufacture of refillable seamless aluminium alloy gas cylinders of water capacities from 0,5 l up to and including 150 l for compr
13、essed, liquefied and dissolved gases for worldwide use (normally up to + 65 C). NOTE If so desired, cylinders of water capacity less than 0,5 l may be manufactured and certified to this International Standard. 2 Normative references The following normative documents contain provisions which, through
14、 reference in this text, constitute provisions 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
15、applying the most recent editions of 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 6506:19811), Metallic materials Hardness t
16、est Brinell test. ISO 6508:19862), Metallic materials Hardness test Rockwell test (scales A - B - C - D - E -F - G - H - K). ISO 6892:1998, Metallic materials Tensile testing at ambient temperature. ISO 7438:1985, Metallic materials Bend test. ISO 7539-6:1989, Corrosion of metals and alloys Stress c
17、orrosion testing Part 6: Preparation and use of pre- cracked specimens. ISO 11114-1:1997, Transportable gas cylinders Compatibility of cylinder and valve materials with gas contents Part 1: Metallic materials. ISO 13341:1997, Transportable gas cylinders Fitting of valves to gas cylinders. ISO 137693
18、), Gas cylinders Stamp marking. 1) To be withdrawn and replaced by ISO 6506-1, ISO 6506-2 and ISO 6506-3. 2) To be withdrawn and replaced by ISO 6508-1, ISO 6508-2 and ISO 6508-3. 3) To be published. ISO 7866:1999(E) ISO 2 3 Terms and definitions For the purpose of this International Standard the fo
19、llowing terms and definitions apply. 3.1 yield stress value corresponding to the 0,2 % proof stress (non-proportional elongation), Rp0,2 3.2 solution heat treatment thermal treatment which consists of heating the products to a suitable temperature and holding at that temperature long enough to allow
20、 constituents to enter into solid solution 3.3 quenching controlled rapid cooling in a suitable medium to retain the solute phase in solid solution 3.4 artificial ageing heat treatment process in which the solute phase is precipitated to give an increased yield stress and tensile strength 3.5 batch
21、quantity of up to 200 cylinders, plus cylinders for destructive testing, of the same nominal diameter, thickness and design, made successively from the same cast of aluminium alloy and subjected to the same heat treatment for the same duration of time NOTE The lengths of the cylinders in a batch may
22、 vary by up to 12 %. 3.6 design stress factor (F)(variable) ratio of equivalent wall stress at test pressure (ph) to the guaranteed minimum yield stress (Re) 3.7 IAA registration record of international alloy designations and chemical composition limits for wrought aluminium and wrought aluminium al
23、loys as published by the Aluminum Association4) 4 Symbols aCalculated minimum thickness, in millimetres, of the cylindrical shell (see Figure 1) aGuaranteed minimum thickness, in millimetres, of the cylindrical shell APercentage elongation bGuaranteed minimum thickness, in millimetres, at the centre
24、 of a convex base (see Figure 1) DNominal outside diameter, in millimetres, of the cylinder (see Figure 1) DfDiameter, in millimetres, of former (see Figure 5) EModulus of elasticity in MPa FDesign stress factor (variable) (see 3.6) 4) Aluminum Association Inc., 900, 19th Street N.W., Washington D.C
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