GB/T 7991.3-2021 "Test methods for vitreous and porcelain enamel — Part 3: Determination of resistance to thermal shock" specifies the method for determining the resistance of vitreous enamel layers to thermal shock. The test involves rapidly immersing a sample heated to a specified high temperature into a low-temperature water medium. After multiple cycles, the enamel surface is inspected for defects such as cracks or peeling to evaluate its ability to withstand drastic temperature changes.
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 | G94 | ICS | 71.120;25.220.50 |
| Release Date | 2021-12-31 00:00:00 | Implementation Date | 2022-07-01 00:00:00 |
