What are the selection principles for high temperature testers?

High temperature tester is a key equipment used to detect and evaluate the performance and quality of products such as refractory materials, glass/quartz, and investment casting ceramics in high temperature environments. Since different types of tested samples have differences in use environment, required indicators, etc., it is particularly important to choose a suitable high temperature tester. Below, Hutt Xiaobian will give you a detailed introduction to the selection principles of high temperature testers.

Selection principles of high temperature tester

1. Temperature range and accuracy

Different types of high temperature testers have different temperature ranges and accuracy. Refractory materials usually need to test high temperature performance above 1600℃, while the test temperature range of glass and ceramic samples is relatively low. Therefore, when selecting a high temperature tester, it is necessary to ensure that its temperature range can cover the use temperature of the tested sample and that the temperature accuracy meets the test requirements to obtain accurate data.

2. Heating method and heating rate

The heating methods of high temperature testers include resistance heating, induction heating, radiation heating, etc. Different heating methods are suitable for different types of samples. In addition, the heating rate is also an important indicator. Some tests require rapid heating, while others require slow heating. Reasonable selection of heating methods and heating rates can simulate the actual use environment and improve the reliability of test results.

3. Atmosphere control capability

Some high-temperature tests need to be carried out in a specific atmosphere, such as a reducing atmosphere, a neutral atmosphere, or an oxidizing atmosphere. Therefore, for this type of test, the high-temperature tester must have the corresponding atmosphere control capability to provide the required gas type and flow rate and maintain the stability of the atmosphere.

4. Automation and data acquisition

Modern high-temperature testers usually have a high degree of automation and can realize functions such as program control, automatic data acquisition and processing. The higher the level of automation, the less workload the operator has, and the lower the risk of human error, improving test efficiency and data accuracy.

5. Sample shape and size

Different types of tested samples differ in shape and size. For example, refractory materials may be blocks or cylinders, while glass may be strips or spheres. The size and shape of the sample chamber of the high-temperature tester must match the sample to be tested to avoid test errors caused by thermal stress accumulation.

6. Consumables and auxiliary facilities

During long-term use, some consumable parts of the high-temperature tester, such as heating elements and thermal insulation materials, will need to be replaced. In addition, corresponding auxiliary facilities, such as temperature calibration devices and gas supply systems, are also required. These factors should be considered when selecting to reduce the cost of later operation and maintenance.

In short, the selection principles of high temperature testers include temperature range, heating method, atmosphere control, automation level and other factors, and reasonable choices need to be made according to specific test requirements. Only in this way can the accuracy and reliability of high temperature testing be guaranteed, providing strong data support for product quality evaluation.