The hot air circulation oven is composed of angle steel, stainless steel plate and cold steel plate. The thermal insulation layer is filled with high-density aluminum silicate cotton, which ensures the thermal insulation of the drying oven and the safety of users. The heater can be installed at the bottom, top or both sides. Use digital intelligent instrument to control temperature. There are two types of air duct design for hot air circulation oven: horizontal air supply and vertical air supply!

　　Product features: The shell is made of high-quality cold-rolled steel plate, and the surface is made of electrostatic spraying technology, with novel appearance and durability. The studio is made of high-quality stainless steel plate or cold-rolled steel plate, which has the advantages of high temperature resistance, corrosion resistance and no black smoke. The movable pull-out grid frame increases the storage space of materials in the box. A double-layer tempered glass observation window is installed in the middle of the box door to observe the condition of heated items in the studio at any time. The hot air circulation oven is a device that uses electric heating wire to heat and dry objects.

　　It is suitable for baking, drying, heat treatment, etc. in the range of 5~300 ℃ higher than room temperature (some 200 ℃ higher), and the sensitivity is usually ± 1 ℃. It has many models, but its basic structure is similar. It is generally composed of three parts: box, electric heating system and automatic temperature control system. Its use and precautions are summarized as follows:

　　1. The hot air circulation oven must be placed indoors in a dry and horizontal place to prevent vibration and corrosion.

　　2. Attention should be paid to the safe use of electricity. Install a power switch with sufficient capacity according to the power consumption of the hot air circulation oven. Select enough power conductors and have good grounding wire.

　　3. The mercury thermometer thermostat with electric contact shall connect the two wires of the electric contact thermometer to the two terminals on the top of the box. In addition, insert an ordinary mercury thermometer into the exhaust valve (the thermometer in the exhaust valve is used to calibrate the electric contact mercury thermometer and observe the actual temperature in the box) and open the hole of the exhaust valve. Adjust the electric contact mercury thermometer to the required temperature and tighten the screws on the steel cap to achieve the purpose of constant temperature. However, attention must be paid not to rotate the indicator iron outside the scale during adjustment.

　　4. After all preparations are ready, put the test sample into the hot air circulation oven, and then connect and turn on the power supply. The red indicator light is on, indicating that the oven has been heated. When the temperature reaches the controlled temperature, the red light goes out and the green light goes on, and the constant temperature starts. In order to prevent the failure of temperature control, we must also take care of it.