Metal heat treatment is a process in which the metal or alloy workpiece is heated to a suitable temperature in a certain medium, and maintained at this temperature for a certain time, and cooled in different media at different speeds, and its performance is controlled by changing the surface or internal microstructure of the metal material. Metal heat treatment is one of the important processes in machinery manufacturing, heat treatment process generally includes heating, insulation, cooling three processes, the need for high precision temperature measurement and control, the use of appropriate instruments for metal heat treatment process temperature monitoring is very important.

In the process of metal heat treatment, due to the limitation of production conditions, it is often not suitable for contact temperature measurement. It is recommended to use infrared thermal imaging instrument for temperature monitoring. Infrared thermal imaging instrument adopts non-contact temperature measurement and can realize 24-hour real-time temperature monitoring, which is suitable for all processes of metal heat treatment. Can also set the alarm temperature, for too low/too high temperature alarm Settings, to ensure that the temperature in the appropriate temperature range.

Application of infrared thermal imager in metal heat treatment annealing process:

During annealing, the metal needs to be heated above its recrystallization temperature, which increases the ductility of the metal and reduces the hardness for easy processing. The infrared thermal imager can accurately measure the temperature, ensuring that the correct temperature is reached at each stage of the process to produce the desired performance.

Application of infrared thermal imager in metal heat treatment quenching process:

In the flame quenching process, the flame is applied directly to the metal to harden the surface of the metal without affecting the base material. Temperature monitoring is essential to control the level of surface hardening so as not to affect the entire metal component. Traditional contact temperature measuring instruments measure the temperature of the flame, rather than the temperature of the component itself, so it is necessary to use non-contact methods for measurement. A short-wave thermal imager is usually used to measure the surface temperature of a metal through a flame.

Application of infrared thermal imager in laser hardening process:

The laser hardening process uses lasers to harden the metal surface while maintaining the flexibility of the underlying metal. Precise temperature monitoring helps to ensure that the surface is heated to the correct level to achieve the desired strength, while ensuring that the internal properties of the metal are not affected.

In order to achieve high precision temperature monitoring, it is necessary to ensure that the temperature of the metal surface is measured and not the temperature of the laser. Therefore, contact measuring instruments cannot be used, as they themselves will be heated by the laser. Generally, the temperature monitoring of laser hardening process is carried out by using short-wave infrared thermal imager.

Application of infrared thermal imager in heat treatment plasma nitriding process:

The plasma nitriding process uses plasma to quench metal surfaces. The plasma temperatures involved are generally between 420-660°C (788-1220 °F). Accurate temperature measurements are important to ensure that the desired hardening level is achieved.

Plasma nitriding depends on thermochemical processes, so the correct temperature must be maintained in order for this reaction to occur.

The temperature monitoring of the infrared thermal imager in the metal heat treatment process can ensure that the process is in the appropriate temperature range, improve product quality and reduce energy consumption.