《ISO-6626-3-2008.pdf》由会员分享，可在线阅读，更多相关《ISO-6626-3-2008.pdf（28页珍藏版）》请在三一文库上搜索。
1、 Reference number ISO 6626-3:2008(E) ISO 2008 INTERNATIONAL STANDARD ISO 6626-3 First edition 2008-06-15 Internal combustion engines Piston rings Part 3: Coil-spring-loaded oil control rings made of steel Moteurs combustion interne Segments de piston Partie 3: Segments racleurs rgulateurs dhuile, en
2、 acier, mis en charge par ressort hlicodal Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 02:15:59 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 6626-3:2008(E) PD
3、F 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, pa
4、rties 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 relativ
5、e 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. COPYRIGH
6、T 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 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 2008 All rights reserved Copyright International Organization for Standardizat
8、ion Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 02:15:59 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 6626-3:2008(E) ISO 2008 All rights reserved iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative
9、references. 1 3 Symbols. 1 4 Piston ring types and designation examples 2 4.1 Type SOR Steel oil control rings with R-shaped groove . 2 4.2 Type SOV Steel oil control rings with V-shaped groove 3 5 Common features . 4 5.1 Ring width h1 and radial wall thickness a1. 4 5.2 Land width h5. 5 5.3 Land an
10、gle , 5 5.4 Land spacing B3 6 5.5 Slot sizes . 6 5.6 Nitrided surface. 7 5.7 Nominal contact pressure and tangential force 7 5.8 Tolerance of tangential force Ft. 7 6 Coil springs . 8 6.1 Types of coil spring 8 6.2 Coil-spring excursion (extended gap) 10 6.3 Position of coil spring gap and fixing. 1
11、0 6.4 Material 10 7 Type SOR. 11 8 Type SOV. 11 9 Dimensions 12 Bibliography. 20 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 02:15:59 MDTNo reproduction or networking permitted without licens
12、e from IHS -,-,- ISO 6626-3:2008(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 International Standards is normally carried out through ISO technica
13、l 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. ISO collaborates closely wit
14、h 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 technical committees is to prepare International Standards. Draft Inter
15、national 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 drawn to the possibility that some of the elements of this document may
16、 be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 6626-3 was prepared by Technical Committee ISO/TC 22, Road vehicles. ISO 6626 consists of the following parts, under the general title Internal combustion engines Piston rings: Coil
17、-spring-loaded oil control rings1) Part 2: Coil-spring-loaded oil control rings of narrow width made of cast iron Part 3: Coil-spring-loaded oil control rings made of steel 1) ISO 6626:1989, published without a part number, is regarded as the first part of the ISO 6626 series since publication of th
18、e other parts. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 02:15:59 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 6626-3:2008(E) ISO 2008 All rights reserved v
19、 Introduction ISO 6626 is one of a series of International Standards dealing with piston rings for reciprocating internal combustion engines. Others are ISO 6621, ISO 6622, ISO 6623, ISO 6624, ISO 6625 and ISO 6627 (see Clause 2 and Bibliography). The common features and dimensional tables presented
20、 in this part of ISO 6626 constitute a broad range of variables and, in selecting a particular ring type, the designer will bear in mind the conditions under which it will be required to operate. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee
21、=Boeing Co/5910770001 Not for Resale, 07/25/2008 02:15:59 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 02:15:59 MDTNo
22、reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 6626-3:2008(E) ISO 2008 All rights reserved 1 Internal combustion engines Piston rings Part 3: Coil-spring-loaded oil control rings made of steel 1 Scope This part of ISO 6626 specifies the essential dimen
23、sions of coil-spring-loaded, nitrided oil control rings made of steel, of piston ring types SOR (with R-shaped groove) and SOV (with V-shaped groove). This part of ISO 6626 applies to coil-spring-loaded, nitrided oil control rings made of steel with a diameter of between 60 mm and 200 mm inclusive f
24、or reciprocating internal combustion engines. It can also be used for piston rings of compressors working under analogous conditions. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies
25、. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 6621-4, Internal combustion engines Piston rings Part 4: General specifications 3 Symbols The following symbols are used in this part of ISO 6626. NOTE These symbols (including associated
26、indices) are in accordance with the symbols used in ISO 6621, ISO 6622, ISO 6623, ISO 6624, ISO 6625, ISO 6627 and other parts of ISO 6626. a1 radial wall thickness a4 groove depth a12 radial thickness over coil spring a13 groove depth and bridge a14 external land depth B3 land spacing c1 slot width
27、 d1 nominal diameter (nominal bore diameter) d7 coil-spring diameter Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 02:15:59 MDTNo reproduction or networking permitted without license from IHS -
28、,-,- ISO 6626-3:2008(E) 2 ISO 2008 All rights reserved d14 coil-spring groove diameter for type SOR f1 coil-spring excursion Ft tangential force h1 ring width h5 land width p0 contact pressure s1 closed gap w1 slot length w3 slot spacing land angle inside land angle outside groove angle for type SOV
29、 4 Piston ring types and designation examples 4.1 Type SOR Steel oil control rings with R-shaped groove 4.1.1 General features and dimensions Figure 1 shows the general features and dimensions of piston ring type SOR. Copyright International Organization for Standardization Provided by IHS under lic
30、ense with ISO Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 02:15:59 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 6626-3:2008(E) ISO 2008 All rights reserved 3 Dimensions in millimetres For definitions of symbols, see Clause 3. For dimensions, see Tables 3
31、, 4, 5, 10, 13, 14, 15 and 16. Key 1 reference plane Figure 1 General features and dimensions of piston ring type SOR 4.1.2 Designation EXAMPLE A coil-spring-loaded, nitrided oil control ring made of steel with R-shaped groove (SOR), a radial wall thickness class = small (S), of nominal diameter d1
32、= 100 mm (100), a nominal ring width h1 = 3 mm (3), a land width h5 = 0,20 mm (0,20), a nitrided depth of 0,030 mm min. (NT030), coil spring with reduced heat set (WF), and variable pitch with coil diameter d7 ground (CSE), medium nominal contact pressure p0 = 1,5 MPa (PN1,5): Piston ring ISO 6626-3
33、-SOR-S 100 x 3 x 0,20 NT030 WF CSE PN1,5 4.2 Type SOV Steel oil control rings with V-shaped groove 4.2.1 General features and dimensions Figure 2 shows the general features and dimensions of piston ring type SOV. Copyright International Organization for Standardization Provided by IHS under license
34、with ISO Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 02:15:59 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 6626-3:2008(E) 4 ISO 2008 All rights reserved Dimensions in millimetres For definitions of symbols, see Clause 3. For dimensions, see Tables 3, 4,
35、5, 11, 17, 18 and 19. Key 1 reference plane Figure 2 General features and dimensions of piston ring type SOV 4.2.2 Designation EXAMPLE A coil-spring-loaded, nitrided oil control ring made of steel with V-shaped groove (SOV), a radial wall thickness class = small (S), V-shaped groove angle 40 (V40),
36、of nominal diameter d1 = 100 mm (100), a nominal ring width h1 = 3 mm (3), a land width h5 = 0,20 mm (0,20), a nitrided depth of 0,030 mm min. (NT030), coil spring with reduced heat set (WF), and constant pitch with coil diameter d7 ground (CSN), medium nominal contact pressure p0 = 1,5 MPa (PN1,5):
37、 Piston ring ISO 6626-3-SOV-S-V40-100 x 3 x 0,20 NT030 WF CSN PN1,5 5 Common features 5.1 Ring width h1 and radial wall thickness a1 Table 1 shows common features for ring width h1 and radial wall thickness a1. Copyright International Organization for Standardization Provided by IHS under license wi
38、th ISO Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 02:15:59 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 6626-3:2008(E) ISO 2008 All rights reserved 5 Table 1 Ring width h1 and radial wall thickness a1 Dimensions in millimetres Radial wall thickness 1 0,
39、15a Ring width 0,01 10,03 h = Small (Code: S) Large (Code: L) Type 2,0 1,8 to 2,0 SOR 2,5 1,8 to 2,0 SOR 3,0 1,8 to 2,0 2,3 to 2,6 SOR and SOV 4,0 2,0 to 2,6 2,8 to 3,2 SOR and SOV 5.2 Land width h5 Table 2 shows common features for land width h5. Table 2 Land width h5 Dimensions in millimetres Ring
40、 width h1 Land width 5 0,07h 2,0 0,20 2,5 0,20 0,25 3,0 0,20 0,25 0,30 4,0 0,20 a 0,25 0,30 a For diameters greater than 120 mm and ring width equal to 4,0 mm, land width equal to 0,20 mm shall not be used. 5.3 Land angle , Table 3 shows common features for land angle , . Table 3 Land angle , Land a
41、ngle Range of nominal angle Tolerance inside 5 to 20 a 5 outside 10 to 30 a 5 a Nominal angle subject to agreement between manufacturer and client. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008
42、 02:15:59 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 6626-3:2008(E) 6 ISO 2008 All rights reserved 5.4 Land spacing B3 Table 4 shows common features for land spacing B3. Table 4 Land spacing B3 Dimensions in millimetres Ring width h1 Land spacing B3 a 2,0 1,25 to 1
43、,45 2,5 1,35 to 1,75 3,0 1,45 to 2,10 4,0 1,80 to 3,20 a () 31 0,95Bc+ 5.5 Slot sizes Table 5 shows common features for slot sizes. Table 5 Standard slot sizes Dimensions in millimetres Ring width h1 Slot width c1 Slot length w1 Slot spacing w3 2,0 0,3 to 0,5 1,4 to 2,5 5 to 10 2,5 0,4 to 0,6 2,0 to
44、 3,0 5 to 10 3,0 0,5 to 0,7 2,5 to 3,5 5 to 10 4,0 0,6 to 1,0 3,0 to 5,0 5 to 10 Slots may open into the gap faces (see Figure 3). Figure 3 Arrangement of slots Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resal
45、e, 07/25/2008 02:15:59 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 6626-3:2008(E) ISO 2008 All rights reserved 7 5.6 Nitrided surface Table 6 shows common features for nitrided surfaces. Table 6 Nitrided case depth of peripheral surface and sideface Dimensions in mi
46、llimetres Nitrided case depth a Code Peripheral surface min. Sideface min. NT010 0,010 0,005 NT030 0,030 0,010 NT050 0,050 0,015 a For tolerances, see ISO 6621-4. 5.7 Nominal contact pressure and tangential force Table 7 shows common features for nominal contact pressure. Table 7 Nominal contact pre
47、ssure classes Dimensions in millimetres Nominal contact pressure p0 MPa Ring width h1 Code PN1,0 Code PN1,5 Code PN2,0 Code PN2,5 2,0 1,0 1,5 2,0 2,5 1,0 1,5 2,0 3,0 1,5 2,0 2,5 4,0 1,5 2,0 2,5 5.8 Tolerance of tangential force Ft Table 8 shows common features for tangential force Ft, where t150 Fdhp= (1) Table 8 Tolerance of tangential force Ft Tangential force N Tolerance Ft 20 4 N Ft W 20 20 % Copyright International Organization for Standardization Provided by IHS under lice