Necessary conditions for safe use of hot air circulation ovens

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

　　Product features:The shell is made of high-quality cold-rolled steel plate, and the surface adopts electrostatic spraying technology. The appearance is novel, sturdy, and durable. 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 structure increases the storage space for materials inside the box. The middle of the box door is equipped with a double layer tempered glass observation window, which can observe the situation of heated items in the studio at any time. A hot air circulation oven is a device that uses an electric heating wire interlayer to heat and dry objects.

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

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

　　2. Attention should be paid to the safe use of electricity, and a power switch with sufficient capacity should be installed according to the power consumption of the hot air circulation oven. Choose sufficient power leads and have a good grounding wire.

　　3. The mercury thermometer type temperature controller with electric contact should connect the two wires of the electric contact thermometer to the two terminals on the top of the box. 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 inside 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 constant temperature. But it is necessary to pay attention not to rotate the indicator iron outside the scale during adjustment.

　　4. After all preparations are ready, the test sample can be placed in the hot air circulation oven, and then connected and turned on the power. The red indicator light lights up to indicate that the oven has been heated. When the temperature reaches the controlled temperature, the red light turns off and the green light turns on, and the constant temperature begins. To prevent temperature control failure, it is also necessary to take care of it.