标准编号：ISO 8289-1:2020
中文名称：玻璃和搪瓷 检测和定位缺陷的低压试验 第1部分：非仿形表面的拭子试验
英文名称：Vitreous and porcelain enamels — Low-voltage test for detecting and locating defects — Part 1: Swab test for non-profiled surfaces
发布日期：2020-02
标准范围
This document specifies two low voltage tests for detecting and locating defects that extend to the basis metal in vitreous and porcelain enamel coatings.
Method A (electrical) is applicable to the rapid detection and determination of the general location
of defects. Method B (optical), based on colour effects, is applicable to the more precise detection of
defects and their exact locations. Both methods are commonly applied to flat surfaces. For more
intricate shapes, such as undulated and/or corrugated surfaces, ISO 8289-2 is applicable.
NOTE 1 Selection of the correct test method is critical to distinguish the areas of increased conductivity detected by method B from actual pores that extend to the basis metal, which can be detected by both methods.
NOTE 2 The low voltage test is a non-destructive method of detecting defects and, therefore, is completely different from the high voltage test specified in ISO 2746. The results of the high and low voltage tests are not comparable and will differ.
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