Principle and application of melting thermometer

Melting thermometer is a device used to measure the temperature of high-temperature metal liquid, which is mainly used in metallurgy, casting, steel and other industries. Its working principle is based on the thermoelectric effect, using thermocouples to convert the temperature of the measured object into electrical signals, which are processed and displayed through the circuit.

Usually, the smelting thermometer consists of a probe and a display. The probe usually adopts nickel chromium / nickel chromium or platinum rhodium thermocouple materials, which can withstand temperatures up to 1600 ℃. When the probe is inserted into the molten metal to be measured, the thermocouple will produce a small potential difference, which is proportional to the measured temperature. After this potential difference is amplified and converted, the corresponding temperature value can be obtained on the display.

Melting thermometer is widely used. In the metallurgical industry, it is mainly used to measure the temperature of different kinds of molten steel and plays an important role in regulating the smelting process. In the casting industry, melting thermometer can monitor the temperature change of metal liquid to avoid the casting quality problems caused by overheating or supercooling. In addition, when manufacturing various superalloys, melting thermometer is also required to ensure the temperature control accuracy of metal liquid.

In a word, melting thermometer is an indispensable important equipment in modern industrial production, and its accuracy and stability are of great significance to ensure product quality and production efficiency.