hot air curing circulation oven for drying, curing, and heat - treating various materials
1. The working principle of a hot air curing circulation oven
1. 1Heating Element The oven is equipped with a heating element, typically an
electric heating coil or a gas burner. When the oven is powered on, the heating
element converts electrical or chemical energy into heat. For example, in an
electric - heated oven, an electric current passes through the high - resistance
heating coil, generating heat due to the Joule effect.
1.2 Air Circulation A fan is a crucial part of the oven. Once the air is heated, the
fan starts to operate. It draws in the heated air from around the heating element
and then blows it into the oven chamber. The circulated hot air spreads evenly
throughout the chamber, reaching all the items placed inside. This ensures that
every part of the product experiences the same temperature, eliminating hot
and cold spots.
1. 3 Temperature Control A thermostat or a more advanced temperature - control
system is used to regulate the temperature inside the oven. Temperature sensors,
such as thermocouples, are placed inside the chamber. These sensors continuously
monitor the temperature and send the data to the controller. If the temperature is
lower than the set value, the controller signals the heating element to produce
more heat. Conversely, if the temperature exceeds the set value, the heating element's
power is reduced or turned off.
1. 4 Curing Process As the hot air circulates around the products in the oven, it
transfers heat to them. For materials like coatings or adhesives, this heat initiates
chemical reactions that cause them to cure. During the curing process, the material
changes from a liquid or semi - liquid state to a solid state, developing its desired
physical and chemical properties such as hardness, strength, and adhesion.
1.5 Exhaust System Some hot air curing circulation ovens also have an exhaust system.
This system is used to remove any volatile organic compounds (VOCs) or other
by - products generated during the curing process. The exhaust helps maintain a
clean and safe working environment and can prevent the accumulation of potentially
harmful substances inside the electric drying oven.
| 2.Basic parameters of the equipment (could be as aging test oven) | |
| External Material: | SUS304 stainless steel |
| Studio Material: | SUS304 stainless steel |
| Studio size: | (Depth*Width*Height) Image device size |
| Equipment bottom structure: | Load-bearing feet, wheels and adjustment feet, Foma wheels (customer-selected) |
| Temperature range: | Room temperature RT~300℃ |
| Heating material/power: | Surface low-load metal heating element, service life 30,000 to 50,000 hours |
| Blower power: | |
| Temperature uniformity: | ±3℃ (tested after 20 minutes of no-load constant temperature) |
| Temperature control accuracy: | ±1℃ |
| Control method: | The SSR module controls the output to achieve fine PID temperature control. (It covers the impact of large instantaneous current impact and large control fluctuation caused by traditional zero-crossing triggering, and can make the output voltage change smoothly and linearly, and automatically adjust the output power size according to the temperature error, so that the internal temperature of the equipment is stable and the performance is excellent.) |
| Air supply mode: | Forced horizontal air supply/strong pressure horizontal air supply |
| Timing device: | HS48S-99.99 timing device can be switched on and off manually or automatically. When the temperature reaches the set temperature, the timing starts. When the time reaches the set range, the heating power is cut off. A buzzer alarm is sounded. |
| Secondary mechanical protection: |
Prevent the main temperature control of the equipment from failing, causing the temperature to continue to rise. When the secondary protection setting value is reached, the heating is cut off and an audible and visual alarm is issued. |
| Studio Configuration: | |
| Control optional accessories: |
Recorder, touch screen control, ventilation and smoke exhaust, timer power on and off, Remote Control |
| Studio accessories: | Trolleys, pallets, partitions, mesh |
| Other requirements: | We can design and manufacture equipment according to the actual size and function requirements of customers. |
