致密成型耐火制品 加热时尺寸永久变化的测定

[中文适用范围]： 本文件规定了确定致密成型耐火制品尺寸永久变化的两种方法。成型耐火材料是指在交付给用户时具有固定几何形状和尺寸的制品。因此，本文件适用于标准形状的耐火砖，也适用于特殊形状的耐火制品和预制制品。本文件不适用于含碳制品。注：这些方法也可用于对氧化敏感的材料。然而，在测试过程中，某些材料可能会受到的影响使得尺寸变化的测量无法达到所需的精度。 [外文原描述]： This document specifies two methods for determining the permanent change in dimensions of a dense shaped refractory product. Shaped refractories are those which have fixed geometry and dimensions when delivered to the user. This document is accordingly applicable to standard shape refractory bricks, but also special shapes refractory products and pre-cast products. This document does not apply to products containing carbon. NOTE The methods can be applied to materials sensitive to oxidation. However, some of these materials can be affected during the test in such a way as to make the measurement of the dimensional changes impossible to carry out to the required accuracy.