Details
1. The operator uses a micrometer to measure the length of the temperature measuring brick and then refers to the comparison table of the same model of temperature measuring brick. The comparison table lists the corresponding data between the length of the temperature measuring brick and the sintering temperature, so the sintering temperature of the temperature measuring brick can be known by referring to the comparison table.
2. Unused temperature measuring brick should be stored in a cool environment, as high temperatures and humidity can cause the temperature measuring brick to corrode.
3. After the surface of the temperature measuring brick is squeezed by a hard object, the squeezing object should be gently removed. Then, use a soft cloth to gently wipe the surface of the temperature measuring brick.
4. When the gas flow in the furnace is large, it will cause larger "material loss" than in static airflow, resulting in greater shrinkage of the temperature measuring brick.
5. The shrinkage degree varies with the placement position in the furnace.
6. If there is a significant temperature difference between the upper and lower surfaces of the temperature measuring brick, the temperature measuring brick will bend, with the bend direction facing the lower temperature side. It is impossible to obtain accurate data using a bent temperature measuring brick. In this case, the temperature measuring brick can be placed sideways before sintering to avoid bending.
7. In a vacuum or low-oxygen atmosphere, the temperature measuring brick will produce MgO, ALO, SiO gas, and the comparison table cannot be used in this case. Pay attention to whether the volatile substances produced by the temperature measuring brick will contaminate the furnace and products.
8. Different models of temperature measuring bricks have different compositions, and the volatile substances produced during sintering are also different, which can contaminate each other. Avoid using different models of temperature measuring bricks in the same environment.
9. The selection of temperature measuring brick models should make the measured temperature value be as close as possible to the middle of the temperature measurement range of the type of temperature measuring brick. If the measured temperature is between the intersection of two types of temperature measuring bricks, look at the sintering time. If the sintering time is more than 2 hours, use the type of temperature measuring brick with a higher temperature value; otherwise, use the type of temperature measuring brick with a lower temperature value. This can better ensure measurement accuracy.
1. Can easily, conveniently, and quickly determine the temperature distribution of various test points in the three-dimensional space of the furnace, and can be placed in different positions as needed.
2. Can be close to the product and accurately determine the heating state of the fired product, reflecting the firing temperature.
3. Good temperature consistency, can ensure good reproducibility of the firing temperature of the product, and can determine the actual firing temperature, assisting in improving the yield of fired products.
4. Can be placed arbitrarily, so destructive testing of fired products is no longer necessary, reducing quality control costs in the production process.
5. Accurately reflects the actual test temperature at different positions and temperature differences between different points during firing.
6. It is quite complex to calibrate a thermocouple or an optical pyrometer. To be able to conveniently grasp the accuracy of the furnace temperature, using temperature measuring bricks is a simple and feasible method.
7. Similar to temperature measuring bricks, there are other temperature measuring objects such as temperature measuring cones, but temperature measuring cones can only measure high temperatures (the cone collapses after reaching a high temperature), and cannot continuously measure temperature values like temperature measuring bricks.
8. Draw quality tracking charts based on the results of temperature measuring bricks to facilitate quality control.
9. Regular use of temperature measuring bricks for testing is beneficial for early detection of temperature anomalies.
10. Compare the performance of different kilns.
Temperature measuring block is a series of standardized products produced by JFCC for temperature measurement, which utilizes the principle of object shrinkage due to heating for temperature measurement.
The raw material composition, particle size distribution, and bulk density of the temperature measuring block are strictly controlled to ensure highly reliable measurement data of the temperature measuring block.
The temperature measuring block is made of alumina and other ceramic powders, pressed and formed into a block. Similar to other ceramic objects, the temperature measuring brick shrinks and increases in density as the temperature rises until the density reaches its maximum value.