BS ISO 3601-3-2005 Fluid power systems - O-rings - Quality acceptance criteria《液压流体动力 O型环 质量验收标准》.pdf
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1、BRITISH STANDARD BS ISO 3601-3:2005 Fluid power systems O-rings Part 3: Quality acceptance criteria ICS 23.100.60; 83.140.50 BS ISO 3601-3:2005 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 1 December 2005 BSI 1 December 2005 ISBN 0 580 472
2、43 4 National foreword This British Standard reproduces verbatim ISO 3601-3:2005 and implements it as the UK national standard. It supersedes BS 6442:1984 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee MCE/11, Fluid seals and their housings, which ha
3、s the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the
4、UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards
5、Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does
6、 not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to v, a blank page, pages 1 to 11 and a back cover. The BSI copyright notice displayed in this document indicates when the document was l
7、ast issued. Amendments issued since publication Amd. No. Date Comments Reference number ISO 3601-3:2005(E)INTERNATIONAL STANDARD ISO 3601-3 Second edition 2005-11-01 Fluid power systems O-rings Part 3: Quality acceptance criteria Transmissions hydrauliques et pneumatiques Joints toriques Partie 3: C
8、ritres de qualit BS ISO 3601-3:2005ii BS ISO 3601-3:2005 iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references . 1 3 Terms, definitions and symbols 1 4 Grades 3 4.1 Grade N (general purpose) 3 4.2 Grade S (special) 3 4.3 Grade CS (critical service) . 3 4.4 Selection of grad
9、e. 3 5 Surface condition 3 6 Identification statement (reference to this part of ISO 3601). 4 BS ISO 3601-3:2005 iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standa
10、rds 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 liaison with ISO, also tak
11、e 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 technical committees is
12、 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 drawn to the possibilit
13、y 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 3601-3 was prepared jointly by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 10, Aerospace fluid system
14、s and components, and by Technical Committee ISO/TC 131, Fluid power systems, Subcommittee SC 7, Sealing devices. This second edition cancels and replaces the first edition (ISO 3601-3:1987), which has been technically revised. ISO 3601 consists of the following parts, under the general title Fluid
15、power systems O-rings: Part 1: Inside diameters, cross-sections, tolerances and size identification code Part 3: Quality acceptance criteria Part 5: Suitability of elastomeric materials for industrial applications The following parts are in preparation: Part 2: Housing dimensions for general applica
16、tions Part 4: Anti-extrusion devices (back-up rings) v Introduction In fluid power systems, power is transmitted and controlled through a fluid (liquid or gas) under pressure within an enclosed circuit. Components must be designed to meet these requirements under varying conditions. Testing of compo
17、nents to meet performance requirement provides users a basis of assurance for determining design application and for checking component compliance with their stated requirements. BS ISO 3601-3:2005blank 1 Fluid power systems O-rings Part 3: Quality acceptance criteria 1 Scope This part of ISO 3601 l
18、ays down the quality acceptance criteria of O-rings used in fluid systems, the dimensions of which are standardized in ISO 3601-1, ISO 16031-1 and ISO 16031-2. This part of ISO 3601 also defines and classifies surface imperfections on O-rings and specifies maximum acceptable limits for these imperfe
19、ctions. This part of ISO 3601 is also applicable to O-rings to be used in aerospace construction. 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
20、 edition of the referenced document (including any amendments) applies. ISO 3601-1, Fluid power systems O-rings Part 1: Inside diameters, cross-sections, tolerances and size identification code ISO 5598, Fluid power systems and components Vocabulary ISO 16031-1, Aerospace fluid systems O-rings, inch
21、 series: Inside diameters and cross sections, tolerances and size-identification codes Part 1: Close tolerances for hydraulic systems ISO 16031-2, Aerospace fluid systems O-rings, inch series: Inside diameters and cross sections, tolerances and size-identification codes Part 2: Standard tolerances f
22、or non-hydraulic systems 3 Terms, definitions and symbols For the purposes of this document, the terms and definitions given in ISO 5598 and the following apply. 3.1 backrind longitudinal imperfection in which the rubber adjacent to the flash line shrinks below the level of the moulding and has a “U
23、”-like or “W”-like cross section with the flash frequently being ragged or torn see Figure 1 3.2 combined flash combination of offset, flash and parting line projection BS ISO 3601-3:20052 3.3 inside diameter d 1O-ring inside diameter 3.4 cross-section diameter d 2O-ring cross-section diameter 3.5 e
24、xcessive trimming flattened and often roughened area around the inner and/or outer diameters of an O-ring caused by the trimming process see Figures 2a and 2b 3.6 flash film-like material that extends from the parting line projection or inner and/or outer diameters, caused by mould separation or pre
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