Safe use of hot air circulation oven and four points for attention

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 wool. The high-density aluminum silicate wool ensures the heat preservation of the drying oven and also ensures the safety of users. The heater can be installed at the bottom, top or both sides. Use digital display intelligent instrument to control temperature. There are two types of hot air circulation oven air duct design: horizontal air supply and vertical air supply!

Features: The shell is made of high-quality cold-rolled steel plate, the surface uses electrostatic spraying technology, the appearance is novel, 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 net rack increases the storage space for the materials in the box. A double-layer tempered glass observation window is installed in the middle of the box door, which can observe the situation of heated objects in the working room at any time. The hot air circulation oven is a device that uses electric wire interlayer heating to dry objects.

It is suitable for baking, drying and heat treatment in the range of 5~300℃ higher than room temperature (some 200℃ higher), the sensitivity is usually ±1℃. There are many types of it, but the basic structure is similar, generally composed of three parts: the cabinet, the electric heating system and the 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 level place to prevent vibration and corrosion.

   2. Pay attention to the safe use of electricity. Install a power knife with sufficient capacity according to the power consumption of the hot air circulation oven. Select enough power wires and have a good ground wire.

  3. The mercury thermometer thermostat with electrical contacts should connect the two wires of the electrical contact thermometer to the two terminals on the top of the box. In addition, insert a common mercury thermometer into the exhaust valve (the thermometer in the exhaust valve is used to check the electrical contact mercury thermometer and observe the actual temperature in the box) to open the hole of the exhaust valve. After adjusting the electrical contact mercury thermometer to the desired temperature, tighten the screws on the steel cap to achieve the purpose of constant temperature. However, it must be noted that when adjusting, do not turn the indicator iron out of the scale.

  4. When everything is ready, put the sample into the hot air circulation oven, and then connect and turn on the power. The red indicator light indicates that the inside of the box 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 the temperature control, it must also be looked after.