《ISO-6194-4-2009.pdf》由会员分享，可在线阅读，更多相关《ISO-6194-4-2009.pdf（24页珍藏版）》请在三一文库上搜索。
1、 Reference number ISO 6194-4:2009(E) ISO 2009 INTERNATIONAL STANDARD ISO 6194-4 Third edition 2009-03-15 Rotary shaft lip-type seals incorporating elastomeric sealing elements Part 4: Performance test procedures Bagues dtanchit lvres pour arbres tournants incorporant des lments dtanchit en lastomre
2、Partie 4: Mthodes dessai de performance Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=HP Monitoring/1111111164 Not for Resale, 04/07/2009 20:11:26 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 6194-4:2009(E) P
3、DF 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 the editing. In downloading this file, p
4、arties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relati
5、ve to the file; the PDF-creation parameters were optimized for printing. Every care has been taken 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. COPYRIG
6、HT PROTECTED DOCUMENT ISO 2009 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 either ISO at the address below or
7、 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 2009 All rights reserved Copyright International Organization for Standardiza
8、tion Provided by IHS under license with ISO Licensee=HP Monitoring/1111111164 Not for Resale, 04/07/2009 20:11:26 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 6194-4:2009(E) ISO 2009 All rights reserved iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Norma
9、tive references. 1 3 Terms, definitions and symbols 2 3.1 Terms and definitions. 2 3.2 Symbols. 2 4 Pre-test procedure 2 5 Dynamic normal-temperature test 2 5.1 Test apparatus 2 5.2 Installation. 5 5.3 Test conditions . 5 5.4 Test procedure 5 5.5 Post-test measurements 5 5.6 Recording 5 5.7 Acceptan
10、ce criteria. 5 6 Dynamic low-temperature test 5 6.1 General. 5 6.2 Test apparatus 6 6.3 Installation. 7 6.4 Test procedure 7 6.5 Post-test measurements 7 6.6 Recording 7 6.7 Acceptance criteria. 7 7 Material testing of elastomeric components . 7 7.1 Elastomeric material requirements. 7 7.2 Density.
11、8 7.3 Hardness 8 7.4 Compression set. 8 7.5 Fluid immersion 8 7.6 Dry-heat ageing in air. 8 7.7 Stiffness at low temperature 9 7.8 Recording 9 8 Identification statement (Reference to this part of ISO 6194). 9 Annex A (informative) Typical example of a seal test report for the dynamic test 10 Annex
12、B (informative) Typical example of a seal test report for the dynamic low-temperature test 13 Annex C (informative) Typical example of an elastomeric material test report. 15 Bibliography. 17 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=HP
13、Monitoring/1111111164 Not for Resale, 04/07/2009 20:11:26 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 6194-4:2009(E) iv ISO 2009 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bod
14、ies (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 organization
15、s, 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. International Standards are drafted in accordance with the rules given in the I
16、SO/IEC 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
17、 member 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 6194-4 was prepared by Technical Committee ISO/TC 131, Fluid power
18、 systems, Subcommittee SC 7, Sealing devices. This third edition cancels and replaces the second edition (ISO 6194-4:1999), which has been technically revised. ISO 6194 consists of the following parts, under the general title Rotary shaft lip-type seals incorporating elastomeric sealing elements: Pa
19、rt 1: Nominal dimensions and tolerances Part 2: Vocabulary Part 3: Storage, handling and installation Part 4: Performance test procedures Part 5: Identification of visual imperfections Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=HP Monitor
20、ing/1111111164 Not for Resale, 04/07/2009 20:11:26 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 6194-4:2009(E) ISO 2009 All rights reserved v Introduction Rotary shaft lip-type seals are used to retain fluid, e.g. lubricant, in equipment where the differential pressu
21、re is relatively low. Typically, the shaft rotates, and the housing is stationary, although in some applications the shaft is stationary, and the housing rotates. Dynamic sealing is normally the result of a designed interference fit between the shaft and a flexible element incorporated in the seal.
22、Similarly, a designed interference fit between the outside diameter of the seal, and the diameter of the housing bore, retains the seal and prevents static leakage. Careful storage, handling and proper installation of all seals are necessary to avoid hazards, both prior to and during installation, w
23、hich would adversely affect service life. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=HP Monitoring/1111111164 Not for Resale, 04/07/2009 20:11:26 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright Internat
24、ional Organization for Standardization Provided by IHS under license with ISO Licensee=HP Monitoring/1111111164 Not for Resale, 04/07/2009 20:11:26 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 6194-4:2009(E) ISO 2009 All rights reserved 1 Rotar
25、y shaft lip-type seals incorporating elastomeric sealing elements Part 4: Performance test procedures WARNING Persons using this part of ISO 6194 should be familiar with normal laboratory practice. Whilst this part of ISO 6194 does not purport to address all the safety problems, if any, associated w
26、ith its application, attention is drawn to the need to employ sensible precautions while handling hot and cold fluids and equipment. It is the responsibility of the user of this part of ISO 6194 to establish appropriate safety and health practices and to ensure compliance with any national regulator
27、y conditions. 1 Scope ISO 6194 describes seals utilizing elastomeric sealing elements. They are considered suitable for use under low-pressure conditions (see ISO 6194-1:2007, 6.1). This part of ISO 6194 specifies general test requirements for rotary shaft lip-type seals. The tests may be used for q
28、ualification purposes. NOTE ISO 6194 is complementary to ISO 16589 which covers seals incorporating thermoplastic sealing elements. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies.
29、For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 48, Rubber, vulcanized or thermoplastic Determination of hardness (hardness between 10 IRHD and 100 IRHD) ISO 188, Rubber, vulcanized or thermoplastic Accelerated ageing and heat resistance
30、tests ISO 812, Rubber, vulcanized or thermoplastic Determination of low-temperature brittleness ISO 815-1, Rubber, vulcanized or thermoplastic Determination of compression set Part 1: At ambient or elevated temperatures ISO 815-2, Rubber, vulcanized or thermoplastic Determination of compression set
31、Part 2: At low temperatures ISO 1817, Rubber, vulcanized Determination of the effect of liquids ISO 2781, Rubber, vulcanized or thermoplastic Determination of density ISO 5598, Fluid power systems and components Vocabulary ISO 6194-1:2007, Rotary shaft lip-type seals incorporating elastomeric sealin
32、g elements Part 1: Nominal dimensions and tolerances ISO 6194-2, Rotary-shaft lip-type seals incorporating elastomeric sealing elements Part 2: Vocabulary Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=HP Monitoring/1111111164 Not for Resale,
33、 04/07/2009 20:11:26 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 6194-4:2009(E) 2 ISO 2009 All rights reserved 3 Terms, definitions and symbols 3.1 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 6194-2 and ISO 5598 an
34、d the following apply. 3.1.1 batch identifiable and traceable consignment of rubber compound of definite composition and manufactured in a single production operation 3.2 Symbols For the purposes of this document, the symbols given in ISO 6194-1 apply. 4 Pre-test procedure 4.1 Inspect all seals subm
35、itted for testing for conformity to a relevant drawing or detailed specification declared by the seal manufacturer. 4.2 For seals with an elastomeric component, ensure that the seal manufacturer has stated the material designation batch number from which the seals have been made, together with the n
36、ominal density, nominal hardness, maximum compression set value and maximum volume change after immersion in the test fluid. Where the seal is required for the low-temperature stiffness test, ensure that the seal manufacturer has also stated the maximum modulus after test at the selected test temper
37、ature. Ensure that the batch of elastomer has been tested in accordance with Clause 7. 4.3 To facilitate accurate analysis of the test results, determine the following data concerning the physical characteristics of the seal and test apparatus before testing: a) lip diameter (with spring); b) lip di
38、ameter (without spring, measured not less than 24 h after removal of spring); c) outer case mean diameter and out-of-roundness; d) shaft diameter, material hardness and surface roughness; e) housing diameter, material and surface roughness; f) protection lip diameter, where applicable (with and with
39、out sealing lip spring fitted). 4.4 Ensure that the specified shaft eccentricity and housing off-set of the test apparatus have been incorporated. 5 Dynamic normal-temperature test 5.1 Test apparatus The test apparatus shall be similar to the typical example shown in Figure 1 and shall consist of a
40、suitable housing for retaining the test fluid and for positioning the test seals, as well as a rotating member having a spindle mounted horizontally on suitable bearings. The design of the housing for the seal shall be in accordance with the dimensions specified in ISO 6194-1. The housing and the ro
41、tating member shall be capable of reproducing the eccentricity and off-set specified in 4.4. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=HP Monitoring/1111111164 Not for Resale, 04/07/2009 20:11:26 MDTNo reproduction or networking permitte
42、d without license from IHS -,-,- ISO 6194-4:2009(E) ISO 2009 All rights reserved 3 Key 1 filler tray 2 insulation 3 drive from prime mover 4 heater band 5 cooling coil 6 seal housing 7 test seal 8 test shaft 9 test head support 10 locking ring 11 spacer ring 12 test fluid b nominal seal width D1 nom
43、inal diameter of the shaft to be used with the seal D2 nominal diameter of the housing bore or outer diameter of the seal Figure 1 Typical example of dynamic normal-temperature test apparatus Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=HP
44、Monitoring/1111111164 Not for Resale, 04/07/2009 20:11:26 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 6194-4:2009(E) 4 ISO 2009 All rights reserved Where it is not practicable to provide a test apparatus with the particular shaft and housing size relevant to the app
45、lication, the test apparatus shall be selected from the standard sizes listed in Table 1. The size selected shall be that nearest to the application size. Table 1 Standard shaft and housing dimensions Dimensions in millimetres Shaft diameter Housing diameter Seal width D1 D2 b 20 35 7 40 55 8 60 80
46、8 90 120 12 200 230 15 The test apparatus shall also conform to the following additional requirements. a) The shaft shall be capable of cycling and/or maintaining the shaft speeds to within 3 %. b) The shaft shall be capable of maintaining the specified test eccentricity under dynamic conditions to
47、within 0,03 mm throughout each test. c) The test head shall be designed and constructed so as to maintain the housing bore alignment relative to the test shaft axis within 0,03 mm throughout the operating temperature range. d) The design of the test head support shall ensure minimum deformation and
48、vibration. e) The test head and heat transfer system shall be capable of maintaining the temperature of the test fluid within 3 C, and shall be vented to atmosphere. f) Heat shall be applied in a manner that does not subject the test fluid to high localized temperatures that could cause fluid decomposition. g) The test shaft shall have a surface that is free of helical machine marks and shall comp