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1、 Reference number ISO 2398:2006(E) ISO 2006 INTERNATIONAL STANDARD ISO 2398 Fifth edition 2006-04-15 Rubber hoses, textile-reinforced, for compressed air Specification Tuyaux en caoutchouc renforcs textile pour lair comprim Spcifications Copyright International Organization for Standardization Provi
2、ded by IHS under license with ISO Licensee=Defense Supply Ctr/9960866100 Not for Resale, 04/24/2007 11:16:58 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 2398:2006(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing pol
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5、to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2006 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or
6、 utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing 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
7、 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2006 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Defense Supply Ctr/9960866100 Not for Resale, 04/24/2007 11:16:58 MDTNo rep
8、roduction or networking permitted without license from IHS -,-,- ISO 2398:2006(E) ISO 2006 All rights reserved iii Contents Page Foreword iv 1 Scope . 1 2 Normative references. 1 3 Terms and definitions. 2 4 Classification. 2 5 Materials and construction 2 6 Dimensions 2 6.1 Internal diameters and t
9、olerances 2 6.2 Concentricity. 3 6.3 Tolerance on length 3 6.4 Minimum thickness of lining and cover . 4 7 Physical properties. 4 7.1 Rubber compounds 4 7.2 Finished hose 5 8 Marking 5 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Defense Su
10、pply Ctr/9960866100 Not for Resale, 04/24/2007 11:16:58 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 2398:2006(E) iv ISO 2006 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
11、(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 has the right to be represented on that committee. International organizations, g
12、overnmental 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. International Standards are drafted in accordance with the rules given in the ISO/I
13、EC Directives, Part 2. The main task of technical 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 mem
14、ber bodies casting a vote. Attention is drawn 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 2398 was prepared by Technical Committee ISO/TC 45, Rubber and rubber
15、products, Subcommittee SC 1, Hoses (rubber and plastics). This fifth edition cancels and replaces the fourth edition (ISO 2398:1995), which has been technically revised. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Defense Supply Ctr/996086
16、6100 Not for Resale, 04/24/2007 11:16:58 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 2398:2006(E) ISO 2006 All rights reserved 1 Rubber hoses, textile-reinforced, for compressed air Specification WARNING Persons using this International Standa
17、rd should be familiar with normal laboratory practice. This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate health and safety practices and to ensure compliance with any national regulator
18、y conditions. 1 Scope This International Standard specifies the requirements for three types, three classes and two categories of textile-reinforced rubber hose for compressed air, up to a maximum working pressure of 25 bar1) with an operating-temperature range of 40 C to + 70 C, depending on the ty
19、pe and category. 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. ISO 37, R
20、ubber, vulcanized or thermoplastic Determination of tensile stress-strain properties ISO 188, Rubber, vulcanized or thermoplastic Accelerated ageing and heat resistance tests ISO 1307, Rubber and plastics hoses Hose sizes, minimum and maximum inside diameters and tolerances on cut lengths ISO 1402,
21、Rubber and plastics hoses and hose assemblies Hydrostatic testing ISO 1746:1998, Rubber or plastics hoses and tubing Bending tests ISO 1817, Rubber, vulcanized Determination of the effects of liquids ISO 4671, Rubber and plastics hoses and hose assemblies Methods of measurement of dimensions ISO 467
22、2:1997, Rubber and plastics hoses Sub-ambient temperature flexibility tests ISO 7326:1991, Rubber and plastics hoses Assessment of ozone resistance under static conditions ISO 8033, Rubber and plastics hoses Determination of adhesion between components ISO 8330, Rubber and plastics hoses and hose as
23、semblies Vocabulary 1) 1 bar = 0,1 MPa Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Defense Supply Ctr/9960866100 Not for Resale, 04/24/2007 11:16:58 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 2398:2006(E)
24、 2 ISO 2006 All rights reserved 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 8330 apply. 4 Classification Hoses are designated as one of the following types, depending on their pressure rating: Type 1: Low pressure Designed for a maximum working p
25、ressure of 10 bar Type 2: Medium pressure Designed for a maximum working pressure of 16 bar Type 3: High pressure Designed for a maximum working pressure of 25 bar These types can be sub-divided into three classes depending on their oil resistance: Class A Non-oil-resistant Class B Nominal oil resis
26、tance Class C Good oil resistance The types and classes above can also be further sub-divided into two categories, depending on their operating-temperature range: Category N-T (Normal Temperature) 25 C to + 70 C Category L-T (Low Temperature) 40 C to + 70 C 5 Materials and construction The hose shal
27、l consist of: a rubber lining; a reinforcement of natural or synthetic textile, applied by any suitable technique; a rubber cover. The lining and cover shall be of uniform thickness, concentric to comply with the minimum thickness specified, and free from holes, porosity and other defects. The cover
28、 finish may be smooth or fabric-marked. 6 Dimensions 6.1 Internal diameters and tolerances When measured in accordance with ISO 4671 the internal diameters and their tolerances shall conform to the values specified in Table 1. Copyright International Organization for Standardization Provided by IHS
29、under license with ISO Licensee=Defense Supply Ctr/9960866100 Not for Resale, 04/24/2007 11:16:58 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 2398:2006(E) ISO 2006 All rights reserved 3 Table 1 Minimum and maximum internal diameters Hose size Minimum internal diamet
30、er mm Maximum internal diameter mm 4 3,25 4,75 5 4,25 5,75 6,3 5,55 7,05 8 7,25 8,75 10 9,25 10,75 12,5 11,75 13,25 16 15,25 16,75 19 18,25 19,75 20 19,25 20,75 25 23,75 26,25 31,5 30,25 32,75 38 36,50 39,50 40 38,50 41,50 51 49,50 52,50 63 61,50 64,50 76 74,50 77,50 80 78,00 82,00 100 98,00 102,00
31、102 100,00 104,00 6.2 Concentricity When determined in accordance with ISO 4671, the concentricity, based on a total indicator reading between the internal diameter and the outside surface of the cover, shall be no greater than 1,0 mm for hoses of internal diameter up to and including 76 mm, and no
32、greater than 1,5 mm for hoses of inside diameter greater than 76 mm. 6.3 Tolerance on length The tolerance on cut lengths shall be as specified in ISO 1307, the length being measured in accordance with ISO 4671. Copyright International Organization for Standardization Provided by IHS under license w
33、ith ISO Licensee=Defense Supply Ctr/9960866100 Not for Resale, 04/24/2007 11:16:58 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 2398:2006(E) 4 ISO 2006 All rights reserved 6.4 Minimum thickness of lining and cover When measured in accordance with ISO 4671, the minimu
34、m thickness of the lining and cover shall be as follows: Type 1 lining 1,0 mm cover 1,5 mm Type 2 lining 1,5 mm cover 2,0 mm Type 3 lining 2,0 mm cover 2,5 mm 7 Physical properties 7.1 Rubber compounds When determined by the methods listed in Table 2, the physical properties of the compounds used fo
35、r the lining and cover shall conform to the values specified in Table 2. Tests shall be carried out either on samples taken from the hose or from separately vulcanized sheets, 2 mm in thickness and vulcanized to the same cure state as the production hoses. Table 2 Physical properties of rubber compo
36、unds Requirement Property Lining Cover Test method Minimum tensile strength 7,0 MPa 7,0 MPa ISO 37 (dumb-bell test piece) Minimum elongation at break 250 % 250 % ISO 37 (dumb-bell test piece) Resistance to ageing Change in tensile strength from original value (max.) 25 % 25 % Change in elongation at
37、 break from original value (max.) 50 % 50 % ISO 188 (3 days at 100 C 1 C), air-oven method ISO 37 (dumb-bell test piece) Resistance to liquids Increase in volume (class A) N/A N/A Increase in volume (max.) (class B only) 115 % No shrinkage allowed N/A ISO 1817 (72 h at 70 C 2 C in oil No. 3), gravim
38、etric method Increase in volume (max.) (class C only) 30 % No shrinkage allowed 75 % No shrinkage allowed ISO 1817 (72 h at 70 C 2 C in oil No. 3), gravimetric method Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Defense Supply Ctr/996086610
39、0 Not for Resale, 04/24/2007 11:16:58 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 2398:2006(E) ISO 2006 All rights reserved 5 7.2 Finished hose When determined by the methods listed in Table 3, the physical properties of the finished hose shall conform to the values
40、 specified in Table 3. Table 3 Physical properties of finished hose Property Requirement Test method Proof pressure 20 bar (type 1) 32 bar (type 2) 50 bar (type 3) ISO 1402 Change in length at maximum working pressure 5 % ISO 1402 Change in diameter at maximum working pressure 5 % ISO 1402 Minimum b
41、urst pressure 40 bar (type 1) 64 bar (type 2) 100 bar (type 3) ISO 1402 Adhesion between components 2,0 kN/m (min.) ISO 8033 Ozone resistance No cracking observed under 2 magnification ISO 7326:1991 method 1 (up to 25 mm id) method 2 or 3 for other sizes Flexibility at 23 C T/D not less than 0,8 ISO
42、 1746:1998, method A Low-temperature flexibility No cracks and shall pass the proof test specified above ISO 4672:1997, method B Category N-T at 25 C 2 C Category L-T at 40 C 2 C 8 Marking The hose shall be continuously and durably marked with the following minimum information: a) manufacturers name
43、 or identification; b) number and year of publication of this International Standard (ISO 2398:2006); c) hose type and class; d) category, if low-temperature (L-T); e) internal diameter, in mm; f) maximum working pressure, in bars; g) date of manufacture, by giving the quarter and year of manufactur
44、e or using another suitable date code. EXAMPLE MAN/ISO 2398:2006/2B/L-T/25 mm/16 bar/2Q06. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Defense Supply Ctr/9960866100 Not for Resale, 04/24/2007 11:16:58 MDTNo reproduction or networking permi
45、tted without license from IHS -,-,- ISO 2398:2006(E) ICS 23.040.70 Price based on 5 pages ISO 2006 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Defense Supply Ctr/9960866100 Not for Resale, 04/24/2007 11:16:58 MDTNo reproduction or networking permitted without license from IHS -,-,-