GB/T 7322-2017 "Refractory Materials - Test Method for Refractoriness" specifies a standard method for determining the refractoriness of refractory materials by heating a specifically sized cone made from the material together with standard pyrometric cones at high temperatures and comparing their bending degrees. Refractoriness characterizes the ultimate temperature at which refractory materials resist softening and melting under high temperatures without load, serving as a fundamental indicator for evaluating their high-temperature resistance.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Active | ||
|---|---|---|---|
| CCS | Q40 | ICS | 81.080 |
| Release Date | 2017-09-07 00:00:00 | Implementation Date | 2018-08-01 00:00:00 |