EN ISO 8289-1:2020
搪瓷和搪瓷.检测和定位缺陷的低压试验.第1部分:非异型表面的拭子试验

2020-08

搪瓷和搪瓷.检测和定位缺陷的低压试验.第1部分:非异型表面的拭子试验 是非强制性国家标准，您可以免费下载预览页

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适用范围: 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.

EN ISO 8289-1:2020搪瓷和搪瓷.检测和定位缺陷的低压试验.第1部分:非异型表面的拭子试验