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1、 Reference number ISO 23297:2008(E) ISO 2008 INTERNATIONAL STANDARD ISO 23297 First edition 2008-12-15 Thermoplastics hoses and hose assemblies Wire or synthetic yarn reinforced single-pressure types for hydraulic applications Specification Tuyaux et flexibles en matire thermoplastique Types hydraul
2、iques pression unique, avec armature de fils mtalliques ou synthtiques Spcifications Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 01/31/2009 04:26:06 MSTNo reproduction or networking permitted without li
3、cense from IHS -,-,- ISO 23297:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing
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6、riat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2008 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
7、 from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2008 All rights reserved Copyright In
8、ternational Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 01/31/2009 04:26:06 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 23297:2008(E) ISO 2008 All rights reserved iii Contents Page Foreword iv
9、 Introduction.v 1 Scope1 2 Normative references1 3 Terms and definitions .2 4 Classification .2 4.1 Classes .2 4.2 Types 2 4.3 Grades 2 5 Materials and construction.3 5.1 Hoses3 5.2 Hose assemblies3 6 Dimensions and tolerances3 6.1 Diameters .3 6.2 Outer cover thickness.5 6.3 Concentricity5 7 Physic
10、al properties .6 7.1 Fluid and UV resistance of thermoplastic compounds.6 7.2 Performance requirements.6 8 Frequency of testing .9 9 Marking.9 9.1 Hoses9 9.2 Hose assemblies9 10 Recommendations for packaging and storage 10 11 Test report10 Annex A (normative) Type tests and routine tests11 Annex B (
11、informative) Production acceptance tests.12 Annex C (informative) Recommendations for lengths of supplied hoses and hose assemblies.13 Bibliography14 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 01/31/20
12、09 04:26:06 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 23297:2008(E) iv ISO 2008 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing
13、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 has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaiso
14、n with ISO, also take part in the work. 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 2. The main task of tec
15、hnical committees is to prepare International Standards. 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 the member bodies casting a vote. Attention is dra
16、wn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 23297 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 1, Hoses (rubber
17、 and plastics). Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 01/31/2009 04:26:06 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 23297:2008(E) ISO 2008 All rights reserved v
18、 Introduction Based on the information received from plastics experts from the Netherlands and the UK, it was decided to exclude, for the time being, the abrasion resistance tests for compounds and hose cover from this International Standard. However, the manufacturers of this product recognize the
19、need for determining the abrasion resistance of the hose cover, as the users require it. ISO 6945 is being revised to include a special test for this property and an amendment to 7.2, setting standards of acceptability for performance of hoses, is planned. Copyright International Organization for St
20、andardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 01/31/2009 04:26:06 MSTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Bo
21、eing Co/5910770001 Not for Resale, 01/31/2009 04:26:06 MSTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 23297:2008(E) ISO 2008 All rights reserved 1 Thermoplastics hoses and hose assemblies Wire or synthetic yarn reinforced single-pressure types fo
22、r hydraulic applications Specification 1 Scope This International Standard specifies requirements for eight classes and two types (construction with adhesive bond between layers and construction without adhesive bond between layers) of wire or synthetic yarn reinforced hydraulic hoses and hose assem
23、blies of nominal size from 3,2 to 31,5. Each class has a single maximum working pressure for all sizes. Such hoses are suitable for use with hydraulic fluids HH, HL, HM, HR, and HV as defined in ISO 6743-4 at temperatures ranging from 40 C to +100 C for grades A and B and 40 C to +120 C for grades C
24、 and D. This International Standard does not include requirements for end fittings. It is limited to the performance of hoses and hose assemblies. The hose assembly maximum working pressure is governed by the lowest maximum working pressure of the components. NOTE It is the responsibility of the use
25、r, in consultation with the hose manufacturer, to establish compatibility of the hose with the fluid to be used. 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 referen
26、ces, the latest edition of the referenced document (including any amendments) applies. ISO 1402, Rubber and plastics hoses and hose assemblies Hydrostatic testing ISO 1746, Rubber or plastics hoses and tubing Bending test ISO 1817, Rubber, vulcanized Determination of the effect of liquids ISO 4671,
27、Rubber and plastics hoses and hose assemblies Methods of measurement of the dimensions of hoses and the lengths of hose assemblies ISO 4672:1997, Rubber and plastics hoses Sub-ambient temperature flexibility tests ISO 4892 (all parts), Plastics Methods of exposure to laboratory light sources ISO 680
28、3, Rubber or plastics hoses and hose assemblies Hydraulic-pressure impulse test without flexing ISO 7233, Rubber and plastics hoses and hose assemblies Determination of resistance to vacuum ISO 7326:2006, Rubber and plastics hoses Assessment of ozone resistance under static conditions ISO 8033, Rubb
29、er and plastics hoses Determination of adhesion between components ISO 8330, Rubber and plastics hoses and hose assemblies Vocabulary ISO 8331, Rubber and plastics hoses and hose assemblies Guidelines for selection, storage, use and maintenance Copyright International Organization for Standardizatio
30、n Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 01/31/2009 04:26:06 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 23297:2008(E) 2 ISO 2008 All rights reserved 3 Terms and definitions For the purposes of this document, the terms a
31、nd definitions given in ISO 8330 apply. 4 Classification 4.1 Classes Eight classes of hose are specified, distinguished by their maximum working pressure, as shown in Table 1. Each class may be manufactured in up to 10 nominal sizes. Table 1 Classes, nominal size and maximum working pressure Class 3
32、5 70 140 210 280 350 420 560 MWP a (bar) 35 70 140 210 280 350 420 560 MWP a (MPa) 3,5 7 14 21 28 35 42 56 Nominal size 3,2 X X X X X X X X 5 X X X X X X X X 6,3 X X X X X X X X 8 X X X X X X X X 10 X X X X X X X X 12,5 X X X X X X X X 16 X X X X X X X X 19 X X X X X X X X 25 X X X X X X X X 31,5 X
33、X X X X X X X a Maximum working pressure. 4.2 Types Two types are specified according to their construction: type 1 with adhesion between the layers; and type 2 without adhesion between the layers. In type 1 hoses, the lining and cover are adhesively bonded (i.e. only separable by force) to the rein
34、forcement; in type 2 hoses, these layers are not attached to the reinforcement. 4.3 Grades Hoses are classified according to their resistance to impulse into four grades: A, B, C and D, as shown in Table 2. Table 2 Grades Resistance to impulse Grade Temperature C Impulse pressure (% of MWP a) Minimu
35、m number of cycles A 100 133 % 200 000 B 100 133 % 500 000 133 % (classes 35, 70, 140, 210) C 120 120 % (classes 280, 350, 420, 560) 500 000 133 % (classes 35, 70, 140, 210) D 120 120 % (classes 280, 350, 420, 560) 1 000 000 a Maximum working pressure. Copyright International Organization for Standa
36、rdization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 01/31/2009 04:26:06 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 23297:2008(E) ISO 2008 All rights reserved 3 The maximum working pressure by class is shown in Table 3. Tab
37、le 3 Maximum working pressure Class 35 70 140 210 280 350 420 560 MWP a (bar) 35 70 140 210 280 350 420 560 MWP a (MPa) 3,5 7 14 21 28 35 42 56 Grade A X X X X X X X X B X X X X X X X X C X X X X X X X X D X X X X X X X X NOTE X = Applicable. a Maximum working pressure. 5 Materials and construction
38、5.1 Hoses Hoses shall consist of a hydraulic-fluid-resistant thermoplastic lining, one or multiple layers of steel wire or synthetic yarn and an oil- and weather-resistant thermoplastic cover. Other protective materials over the thermoplastic cover are allowed for improved abrasion or other resistan
39、ce. 5.2 Hose assemblies Hose assemblies shall only be manufactured with those hose fittings which conform to the requirements of 7.2.1, 7.2.4 and 7.2.5 of this International Standard. Follow the manufacturers instructions for proper preparation and fabrication of hose assemblies. 6 Dimensions and to
40、lerances 6.1 Diameters When measured in accordance with ISO 4671, the diameters of the hoses shall conform to the values given in Table 4. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 01/31/2009 04:26:06
41、 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 23297:2008(E) 4 ISO 2008 All rights reserved Table 4 Diameters of hoses Inside diameter (all classes) mm Maximum outside diameter of hose mm Nominal size min. max. Class 35 Class 70 Class 140 Class 210 Class 280 Class 350
42、 Class 420 Class 560 3,2 3,1 4,0 8 8 9 9,5 9,5 9,5 10,5 10,5 5 4,6 5,4 10 10 11 12 12 12 14 15 6,3 6,1 7,0 12 12 14 14 14 14 16 16 8 7,7 8,5 13 13 15,5 15,5 (16,6 a) 16 16 17 17 10 9,3 10,3 16 16 17,5 18,5 19 19 20 21 12,5 12,3 13,5 20 20 21 23 23 23 24 25 16 15,5 16,8 23 23 25 27 (28 a) 28 28 28 29
43、 19 18,6 19,8 27 28 29 32 32 33 33 34 25 25,0 26,4 34 36 36 39 (40,4 a) 39 40,5 40,5 43,5 31,5 31,4 33,0 45 45 46 48 49 50 50 51,5 a These dimensions are allowable for textile yarn braided reinforcement only; for metal wire braided reinforcement of other classes and sizes, the standard dimensions ap
44、ply. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 01/31/2009 04:26:06 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 23297:2008(E) ISO 2008 All rights reserved 5 6.2 Outer
45、cover thickness When measured in accordance with ISO 4671, the outer cover thickness of the hoses shall conform to the values given in Table 5. Table 5 Outer cover thickness Outer cover thickness mm Nominal size min. max. 3,2 0,1 1,4 5 0,1 1,4 6,3 0,1 1,4 8 0,1 1,4 10 0,1 1,4 12,5 0,2 1,5 16 0,2 1,5
46、 19 0,2 1,5 25 0,2 1,5 31,5 0,4 1,7 6.3 Concentricity When measured in accordance with ISO 4671, the concentricity of the hoses shall conform to the values given in Table 6. Table 6 Concentricity of hoses Maximum variation in wall thickness Between internal diameter and outside diameter Between inte
47、rnal diameter and outside diameter of the tubing Nominal size mm mm Wire Textile 3,2, 5 and 6,3 0,5 0,8 0,2 over 6,3 and up to and including 19 0,8 1,0 0,5 25 1,1 1,3 0,6 31,5 1,2 1,3 0,7 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 01/31/2009 04:26:06 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 23297:2008(E) 6 ISO 2008 All rights reserved 7 Physical properties 7.1 Fluid and UV resistance of thermoplastic compounds 7.1.1 Fluid resistance 7.1.1.1 Test pieces
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