GB/T 5073-2022 in English

1. Background and significance of standard revision

GB/T5073-2022 is the second revision of the original standard GB/T5073-2005, mainly based on the following background:

• Technical alignment with the international standard ISO3187:1989
• Adapting to changes in technological progress and testing requirements in the refractory industry
• Optimizing the scientificity and operability of the test methods

This revision focused on adjusting the test principles, equipment requirements, sample preparation and result calculation methods, so that the standard is more in line with the research and development and application needs of modern refractory materials.

2. Comparative analysis of standard frameworks

3. Interpretation of key points of standard implementation

4. Implementation suggestions and precautions

1. Equipment selection:Select a test device that meets the standard requirements, especially the graduation value of the measuring instrument must be at least 0.005mm.
2. Specimen preparation:Strictly follow the provisions of GB/T7321 to ensure that the geometric dimensions and surface quality of the specimen meet the test requirements.
3. Test condition control:Reasonably set the heating rate (usually 4.5℃/min~5.5℃/min), and keep the temperature difference between the temperature-controlling thermocouple and the temperature-measuring thermocouple within 20℃ during the constant temperature stage.
4. Data recording and processing:It is recommended to use an automated recording system to ensure the integrity and accuracy of the test data, and perform numerical rounding according to GB/T8170.

5. Conclusion

The implementation of GB/T5073-2022 will provide a more scientific and accurate technical basis for quality control in the refractory industry. By rationally applying this standard, the creep performance of refractory materials under high temperature conditions can be effectively evaluated, providing reliable data support for kiln design and material selection.