BS EN ISO 8289-2001 釉瓷和搪瓷.检测和确定缺陷位置的低电压试验

标准号：BS EN ISO 8289-2001
中文标准名称：釉瓷和搪瓷.检测和确定缺陷位置的低电压试验
英文标准名称：Vitreous and porcelain enamels - Low voltage test for detecting and locating defects
标准类型：Y24;Y26
发布日期：2001/9/5 12:00:00
实施日期：2001/9/5 12:00:00
中国标准分类号：Y24;Y26
国际标准分类号：25.220.50
适用范围：This International Standard 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 suitable for the rapid detection and determination of the general location of defects. Method B (optical), based on colour effects, is suitable for the more precise detection of defects and their exact locations. Method A is commonly applied to flat surfaces, whereas method B is preferred for more intricate shapes. 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 (see clause 3) and therefore, is completely differ-ent from the high voltage test specified in ISO 2746. The results of high and low voltage tests are not comparable and will differ.