6933 International Standard (ISO Railway rolling stock material Magnetic particle acceptance testing Materiel roulant de chemin de fer --- Essai de réception magnetoscopique First edition - 1986-06-01 UDC 629.4.02 : 620.179.4 Ref. No. ISO 6933-1986 (E) ISO 6933-1986 (E) Descriptors : railway equipment, railway rolling stock, steel products, axles, wheels, tests, magnetic tests, acceptance testing. Price based on 6 pages d without license from IHS Not for Resale 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 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, govern- mental and non-governmental, in liaison with Iso, also take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the IsO Council. They are approved in accordance with IsO procedures requiring at least 75 % approval by the member bodies voting. International Standard ISO 6933 was prepared by Technical Committee ISO/TC 17, Steel. Users should note that all International Standards undergo revision from time to time and that any reference made herein to any other International Standard implies its latest edition, untess otherwise stated. International Organization for Standardization, 1986 ? Printed in Switzerland Copyright International Organization for Standardization from IHS ISO 6933-1986 (E) INTERNATIONAL STANDARD Railway rolling stock material --- Magnetic particle acceptance testing 5 Main characteristics of the equipment; 1 Scope and field of application inks and testing procedure 1.1 This International Standard specifies a method and pro- 5.1 Survey cedure for detection of surface discontinuities by means of magnetic particle acceptance testing of railway rolling stock material such as axles and wheels (see iS0 1005/3 and Table 1 gives a survey of the main testing variables permitted by ISO 1005/6). this clause provided that the requirements for sensitivity setting in clause 6 are complied with. Unless otherwise agreed, this international Standard 1.2 shall be applied when magnetic particle tests are agreed or 5.2 Testing equipment and recommendations for specified for products to be delivered in accordance with the use various parts of Iso 1005. The testing equipment shall be suitable for performing the following operations : 2 References magnetization (see 5.2.1) ISo 1005, Railway rolling stock material. - application of magnetic particles (see 5.2.2) Part 3: Axles for tractive and trailing stock -- Quality observation with suitable lighting (see 5.2.3) requirements. where required (see clause 9), demagnetization Part 6 : Solid wheels for tractive and trailing stock -- Quality (see 5.2.4). requirements. 5.2.1 Magnetization facilities and methods 3 Information to be supplied by the purchaser 5.2.1.1 Magnetization facilities Where magnetic particle acceptance tests are to be carried out the purchaser shall, where applicable, state on his enquiry and The magnetization facilities shafl be suitable for the application order of one of the following basic magnetization methods : a) which surface areas shall be inspected and the ap- a) the current flow method (see 5.2.1.2); propriate direction of magnetic field as given in table 2; b) the magnetic flux method (see 5.2.1.3 and also 5.4). b) . whether, in the case of axles, a demagnetization of the products is required (see clause 9). 5.2.1.2 Current flow method Magnetization is achieved by passing an electric current, by General requirements means of electrodes, of such an intensity that at each extremity 4 of the region to be tested [see figure 1 a)] the requiremen