1、BRITISH STANDARDBS ISO 16232-10:2007Road vehicles Cleanliness of components of fluid circuits Part 10: Expression of resultsICS 13.040.50; 43.180g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g
2、37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS ISO 16232-10:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 June 2007 BSI 2007ISBN 978 0 580 50919 3National forewordThis British Standard was published by BSI. It is the UK implementati
3、on of ISO 16232-10:2007. The UK participation in its preparation was entrusted to Technical Committee MCE/22, Engines for road vehicles.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary pro
4、visions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments issued since publicationAmd. No. Date CommentsReference numberISO 16232-10:2007(E)INTERNATIONAL STANDARD ISO16232-10First edition2007-0
5、6-01Road vehicles Cleanliness of components of fluid circuits Part 10: Expression of results Vhicules routiers Propret des composants des circuits de fluide Partie 10: Expression des rsultats BS ISO 16232-10:2007ii iiiContents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references . 1 3
6、Terms and definitions. 2 4 Principles. 2 5 Expression of results of gravimetric analysis .2 5.1 Necessary data 2 5.2 Expression of results . 2 6 Expression of results of particle size distribution analysis - Component Cleanliness Code, CCC 3 6.1 Necessary data 3 6.2 Size classes. 3 6.3 Contamination
7、 level 5 6.4 Component Cleanliness Code (CCC) 5 7 Expression of results by the number of particles per component 6 7.1 Size classes. 6 7.2 Contamination level 6 7.3 Component Cleanliness Code. 6 8 Largest particle . 7 9 Test report . 7 Annex A (informative) Recommendation of use of the Component Cle
8、anliness Code (CCC). 9 Annex B (informative) Determination of the wetted volume of a component 10 Annex C (informative) Examples of Component Cleanliness Codes 13 Annex D (informative) Alternative transitional expression of cleanliness . 15 Annex E (informative) Example of test report - Cleanliness
9、inspection report according to ISO 16232. 16 Bibliography . 19 BS ISO 16232-10:2007iv 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 th
10、rough 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 take part in the work. ISO collab
11、orates 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 to prepare International Stan
12、dards. 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 possibility that some of the elements of
13、 this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 16232-10 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 5, Engine tests. ISO 16232 consists of the following parts, under the genera
14、l title Road vehicles Cleanliness of components of fluid circuits: Part 1: Vocabulary Part 2: Method of extraction of contaminants by agitation Part 3: Method of extraction of contaminants by pressure rinsing Part 4: Method of extraction of contaminants by ultrasonic techniques Part 5: Method of ext
15、raction of contaminants on functional test bench Part 6: Particle mass determination by gravimetric analysis Part 7: Particle sizing and counting by microscopic analysis Part 8: Particle nature determination by microscopic analysis Part 9: Particle sizing and counting by automatic light extinction p
16、article counter Part 10: Expression of results BS ISO 16232-10:2007vIntroduction The presence of particulate contamination in a fluid system is acknowledged to be a major factor governing the life and reliability of that system. The presence of particles residual from the manufacturing and assembly
17、processes will cause a substantial increase in the wear rates of the system during the initial run-up and early life, and may even cause catastrophic failures. In order to achieve reliable performance of components and systems, control over the amount of particles introduced during the build phase i
18、s necessary, and measurement of particulate contaminants is the basis of control. The ISO 16232 series has been drafted to fulfil the requirements of the automotive industry, since the function and performance of modern automotive fluid components and systems are sensitive to the presence of a singl
19、e or a few critically sized particles. Consequently, ISO 16232 requires the analysis of the total volume of extraction liquid and of all contaminants collected using an approved extraction method. The ISO 16232 series has been based on existing ISO International Standards such as those developed by
20、ISO/TC 131/SC 6. These International Standards have been extended, modified and new ones have been developed to produce a comprehensive suite of International Standards to measure and report the cleanliness levels of parts and components fitted to automotive fluid circuits. This part of ISO 16232 de
21、fines rules for expressing these cleanliness levels when measured by the methods defined in ISO 16232-6, ISO 16232-7, ISO 16232-8 and ISO 16232-9. Users of the ISO 16232 series introducing this coding system are encouraged to inform the ISO/TC 22/SC 5 secretariat of any problems met, through their n
22、ational standards organization. BS ISO 16232-10:2007blank1Road vehicles Cleanliness of components of fluid circuits Part 10: Expression of results 1 Scope This part of ISO 16232 defines the rules and the forms of expression and presentation of the results of measurements of particulate cleanliness o
23、f components for the fluid circuits of motor vehicles. It also defines a cleanliness coding system for simplifying the reporting and communication of particulate contamination data. This part of ISO 16232 also defines the rules to be used for specifying cleanliness requirements. This part of ISO 162
24、32 does not concern the expression of particulate cleanliness of fluids. 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 reference
25、d document (including any amendments) applies. ISO 16232-1, Road vehicles Cleanliness of components of fluid circuits Part 1: Vocabulary ISO 16232-2, Road vehicles Cleanliness of components of fluid circuits Part 2: Method of extraction of contaminants by agitation ISO 16232-3, Road vehicles Cleanli
26、ness of components of fluid circuits Part 3: Method of extraction of contaminants by pressure rinsing ISO 16232-4, Road vehicles Cleanliness of components of fluid circuits Part 4: Method of extraction of contaminants by ultrasonic techniques ISO 16232-5, Road vehicles Cleanliness of components of f
27、luid circuits Part 5: Method of extraction of contaminants on functional test bench ISO 16232-6, Road vehicles Cleanliness of components of fluid circuits Part 6: Particle mass determination by gravimetric analysis ISO 16232-7, Road vehicles Cleanliness of components of fluid circuits Part 7: Partic
28、le sizing and counting by microscopic analysis ISO 16232-8, Road vehicles Cleanliness of components of fluid circuits Part 8: Particle nature determination by microscopic analysis ISO 16232-9, Road vehicles Cleanliness of components of fluid circuits Part 9: Particle sizing and counting by automatic
29、 light extinction particle counter BS ISO 16232-10:20072 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 16232-1 apply. 4 Principles Particulate contamination, as measured in the whole volume of extraction fluid used in one of the methods of extracti
30、on and analyses described in ISO 16232 series, is quantified: per component; to a reference surface of 1 000 cm2of wetted surface of a component; to a reference volume of 100 cm3of wetted volume of a component. The level of particulate contamination can be expressed by the total mass, by the particl
31、e-size distribution (number of particles per size class) possibly combined with the nature of particles or by the dimension of the largest particle(s) found. Data can also be combined, e.g. total mass and largest particle. Cleanliness levels shall only be compared if they are in the same measurement
32、 units, i.e. either per 1000 cm2of wetted surface area or 100 cm3of wetted volume. The cleanliness levels expressed per component shall never be compared one with the other. They shall only be used to compare a result to a specification. Annex A gives recommendation for using the appropriate Compone
33、nt Cleanliness Code (CCC) codification. NOTE In view of the different physical principles used to evaluate the size of the particles (e.g. a microscope or a light extinction automatic particle counter), the particulate contamination level measured on the same extraction sample can be different. 5 Ex
34、pression of results of gravimetric analysis 5.1 Necessary data The expression of the results of a gravimetric analysis requires knowledge of the following characteristics: 1) wetted volume (VC) or wetted surface area (AC) or VC/ACratio of the component (see Annex B for an example); 2) number of comp
35、onents analysed if the contaminants are collected from more than one component; 3) total mass (mg) of contaminants collected by extraction. NOTE There is no relationship between the gravimetric analysis results and the other contamination analysis results (e.g. particle counting). 5.2 Expression of
36、results 5.2.1 Mass per component (mCp) Let n be the number of components analysed and m the total mass of contaminants collected, then: Cpmg per componentmmn= BS ISO 16232-10:20073When low weight or/and small components are analysed, the result can be expressed as the mass of contaminants for n comp
37、onents. This is written as: Cpmg for componentsmm n= NOTE The cleanliness level reported by the mass per component varies arbitrarily depending on both, the size of the part and amount of its contamination. 5.2.2 Mass per unit surface area of component (mA) If ACis the wetted surface area of the com
38、ponent (cm2) and m the total mass (mg) of contaminant collected, then: 2C1000in mg/1000 cm of componentAmmA= 5.2.3 Mass per unit volume of component (mV) If VCis the wetted volume of the component (cm3) and m the total mass (mg) of contaminant collected, then: C100VmmV= in mg/100 cm3of component 6 E
39、xpression of results of particle size distribution analysis - Component Cleanliness Code, CCC 6.1 Necessary data To present the data from the extraction tests in this form and obtain the CCC requires the information detailed in 5.1 and the following: all or part of the counting size intervals chosen
40、 from Table 1 as specified in the inspection document; wetted volume (VC) or wetted surface area (AC) or VC/ACratio of the component (see Annex B for an example); number of components analysed if the contaminants are collected from more than one component; the numbers of the particles extracted from
41、 the component(s) analysed in each of the specified size ranges. 6.2 Size classes The particles are counted in all or part of the size ranges defined by an inclusive lower size (called x1) and an exclusive higher one (called x2) among those listed in Table 1. Each size range is labelled by a letter
42、which defines a size class. BS ISO 16232-10:20074 Table 1 Size classes for particle counting Size class Size x (m) B 5 u x 15 C 15 u x 25 D 25 u x 50 E 50 u x 100 F 100 u x 150 G 150 u x 200 H 200 u x 400 I 400 u x 600 J 600 u x 1 000 K 1 000 u x NOTE According to individual requirements, size range
43、s may be combined and/or left out. Table 2 Definition of the cleanliness level of a component Number of particles per 100 cm3or per 1 000 cm2More than Up to and including Cleanliness level 0 0 00 0 1 0 1 2 1 2 4 2 4 8 3 8 16 4 16 32 5 32 64 6 64 130 7 130 250 8 250 500 9 500 1 10310 1 1032 10311 2 1
44、034 10312 4 1038 10313 8 10316 10314 16 10332 10315 32 10364 10316 64 103130 10317 130 103250 10318 250 103500 10319 500 1031 10620 1 1062 10621 2 1064 10622 4 1068 10623 8 10616 10624 NOTE In the test report, it is advisable that the raw number of particles also be noted. BS ISO 16232-10:200756.3 C
45、ontamination level The level of particulate contamination of a component in a given particle size class is expressed by the number specified in Table 2 as a function of the number of particles counted on the component with respect to the geometrical unit (100 cm3or 1 000 cm2) chosen. 6.4 Component C
46、leanliness Code (CCC) 6.4.1 The Cleanliness Code of Components (CCC) is written as a sequence, enclosed in parentheses and separated by slashes, of alphanumerical pairs specifying all or several of the size classes from Table 1 and their level of contamination given by Table 2. The capital letters A
47、 or V printed before the parentheses explains if the code refers either to 1 000 cm2of wetted surface area or to 100 cm3of wetted volume of the component. 6.4.2 When the CCC refers to the whole size ranges all letters of Table 1 and corresponding levels are written: for instance CCC = V (B20/C16/D18
48、/E12/F12/G12/H8/I0/J0/K00) 6.4.3 When the CCC refers to some size classes, only the relevant letters and corresponding levels are written: for instance CCC = V (C16/D18/E12/F12/G12/J0) means that there was no requirement (or no results) for cleanliness data at size ranges B,H, I and K. 6.4.4 When se
49、veral successive size classes are at the same cleanliness level, they are reported by their letters side by side and the relevant level is written after the last letter: e.g. : ./EFG12/. CCC = V (C16/D18/EFG12/H8/J0) means that between 2 000 and 4 000 particles (level 12) are in three size ranges 50 u x 100 (size E), 100 u x 150 (size F) and 150 u x 200 (size G) m and that there is no requirement or data for size B, I and K. 6.4.5 When the
