Well Type Tempering Furnace

  RJ2 series 650℃ pit type resistance furnace, the furnace shell is welded by section steel and steel plate. Inside the shell is a furnace made of lightweight refractory materials. The gap between the shell and the furnace is partially filled with thermal insulation materials to form the furnace body. It is characterized by small size, light weight, less heat storage, and good performance. A fan is installed on the furnace cover to force hot air to circulate to ensure uniform furnace temperature. The thermocouple is inserted from the side wall of the furnace and combined with the intelligent temperature control instrument, it can achieve high-temperature control accuracy. The lifting and lowering of the furnace cover are carried out by manual levers or electric motors. A travel switch is installed on the starting shaft of the furnace cover, which is interlocked with the opening and closing action of the furnace cover. When the furnace cover is opened, the power supply of the electric furnace is cut off to ensure that the operator’s security.

Electrical aspects:

• The temperature control instrument adopts an intelligent program control instrument, the precision is 0.3, and the temperature control deviation can reach ±2℃. The man-machine interface adopts a 7-inch touch screen, which is connected to the smart instrument through a communication protocol, and the instrument operation menu is fully expanded on the touch screen so that the operation is more realistic and convenient. When the instrument parameters are not changed, the touch screen displays the working status of each electric furnace area.
• The data recorded by the paperless recorder can be directly checked on it, or it can be copied to the computer through the SD card to realize the recording and printing of the data.
• PID and automatic self-tuning adjustment of the thermal inertia of the heating system, when the furnace temperature is about to reach the set temperature, the instrument automatically reduces the output to prevent the overshoot of the temperature.
• The executive element adopts a solid state relay power module, which has extremely low working noise (there is a faint sound from its matching axial flow fan), fast switching speed, high switching frequency per unit time, and high-temperature control can be achieved by using it.
• The components have high reliability and long service life, which are 3 times that of AC contactors.
• Perfect fault protection measures, such as damage to solid state relay components, fan failure, and automatic sound and light alarm.