标准摘要
[中文适用范围]： 本部分 ISO 28721 规定了主要用于化工厂工艺设备的搪玻璃设备、组件、附件和管道的热冲击阻力要求，以及加热和冷却程序。它使用图表（见图 1 和图 2）规定了热冲击阻力的限值。对于搪玻璃钢，区分了搪玻璃侧的热冲击（由向设备装料产生）和钢侧的热冲击（由加热或冷却设备产生）。本部分 ISO 28721 适用于 -25 °C 至 +230 °C 的操作温度。它仅适用于搪玻璃的未合金化和低合金碳素钢。 [外文原描述]： ISO 28721-3:2008 specifies requirements for the thermal shock resistance of, and heating and cooling procedures for, glass-lined apparatus, components, accessories and pipes primarily used for process equipment in chemical plants. It specifies the limits of thermal shock resistance using diagrams. For glass-lined steel, a distinction is made between a thermal shock on the glass-lined side (produced by charging an apparatus) and a thermal shock on the steel side (produced by heating or cooling an apparatus). This part of ISO 28721 applies to operating temperatures from - 25 °C to + 230 °C. It is only applicable to enamelled unalloyed and low-alloy carbon steels.
英文名称Vitreous and porcelain enamels — Glass-lined apparatus for process plants — Part 3: Thermal shock resistance