90.93 Standard confirmed Dec 4, 2020
ISO
ISO/TC 107 Metallic and other inorganic coatings
International Standard
25.220.50 Enamels
ISO 2746:2015 describes two test methods of high voltage testing:
- Test A is used to detect and locate defects in vitreous and porcelain enamels;
- Test B is used to detect and locate defects and weak spots in vitreous and porcelain enamels.
The tests are performed using DC or pulsed DC high voltage.
The tests are applicable to dry surfaces of enamel coatings. In the case of moist surfaces, care should be taken to ensure that the locating of any defects is correctly performed.
Since test voltages depend on the coating thickness, the test method, especially with test A, may not be suitable for test specimens for which the coating thickness varies to a large extent.
WITHDRAWN
ISO 2746:1998
PUBLISHED
ISO 2746:2015
90.93
Standard confirmed
Dec 4, 2020