Primer / Paint / Top Coat Curing (or Baking)
1. Electric Fired
2. Diesel Fired
3. LPG / PNG Fired
SURFEX® designs and manufactures the Curing Oven (or Baking Oven) for Primer / Paint / Top Coat Baking.
The oven is constructed from a self-supporting fabricated angle iron frame, and the double walled, insulated sheet steel cassettes, which slide fit into each other. The cassettes are being fixed into the iron frame. A special silicon based heat resistant sealing compound additionally seals off the joints between the cassettes. This totally unique twin angle frame and cassettes construction of the oven minimize direct metal contact, in-turn ensuring low heat transfer to the oven surface and saving on precious energy resources.
The air from the working chamber of the oven is drawn by the circulating air blowers over the centralized heat source. This heated air is then feed back in to the working chamber through the hot air ducts. This control is essential for temperature uniformly over the entire oven cross section. The design and placement of air duct with louvers/grills would be in such a way to minimize the heat loss and to provide over all uniformity of temperature. Moreover, the easy movement of articles at entry and exit point is provided so that no damage could occur to painted surface of articles. A number of major safety elements like temperature controller, safety thermostat, blower-heat source interlock etc. shall also be provided.
The heat exchanger box consists of a mono bloc burner coupled to a four-pass heat exchanger. The flue gases pass through the heat exchanger whereas air to be heated is made to pass over the heat exchanger. The four-pass design for the flue gas path of the heat exchanger and the flow direction of the air to be heated draws out the maximum quantum of heat from the flue gas.
Oven works on the theory of the Thermal Radiations i.e. When Diesel / LPG / PNG fired burner / Electrical Heaters fires then it heat exchanger become red hot and air passing over heat exchanger becomes hot due to getting radiation energy of red hot heat exchanger and after re-circulating repeatedly air inside oven becomes hot and the reverse process happens to cure the coated components.