These are typically applied for shortening cure cycle or Out-gassing application for Aluminium / Zinc castings before coating application. All industrial finishing ovens designed by Surfin are modular cassette type for ease of transportation, installation, future needs of expansion and dismantling.
Convection High Velocity
In Principle, high velocity air ovens are used to impinge hot high velocity air against parts to be dried / cured, through a series of specially designed nozzles. This high velocity air removes the stagnant air surrounding the parts and replaces it with fresh heated air.
Infrared Booster Zones
These are ‘Pre-Gel’ ovens that precede traditional convection ovens to rapidly raise coated substrate temperature to a point where the powder flows and gels delivering substrate to CONVECTION OVEN which is close to cure the temperature. This results in a short-cure cycle, floor space saving and energy saving.
High Velocity Slot Nozzles
This oven operation elevates product & the water film to a specific set temperature and holds this for a set period. This effectively drives-off moisture and water film carried through preceding pretreatment.
Straight Tunnel Ovens
Straight tunnel ovens are mainly used for ground chain conveyor applications as well as a stop-and-go conveyor. Surfin provides carefully designed air seals, canopies, sliding doors at entry and exit ends.
Straight Tunnel Ovens
Straight Tunnel Ovens
Camel Back Oven
These ovens elevate the product temperature for a specified time as recommended by paint / powder manufacturing company, namely, Baking window. The combination of time and temperature set the curing. Surfin speciality design integrates results of Pretreatment, Application process and cure process to produce a coating with desired targeted physical and chemical properties.
Drying Ovens
Paint Baking Ovens
Powder Cure Ovens
Powder Curing Oven
Powder Cure Ovens
CED Cure Oven
Surfin designs these ovens based on thermal requirement, geometry, the material of construction and size of the parts to be processed to hold-up time specified by paint/powder supplier company with due considerations of conveyor speed. Our modular Infrared heating gives advantages of lower heat loss, lower CAPEX, saving floor space and quicker installation with no combustion products.
Surfin Process Engineering Team designs IR ovens considering following aspects :
- Power density required Kw/sq. met required and capacity of the element.
- Wavelength required for the Application.
- The optimum distance between emitter and products processed.
- Inside oven surface reflective characteristics.
- Resultant air temperature and movement inside the oven.
- Residence time inside the oven.
- Product’s physical characteristics Viz- Shape, Geometry, Area, Weight, basic material, etc.
- Specific heat, emissivity, conductivity of various product materials involved.
Surfin designs these based on thermal requirement, geometry, material of construction, size of the parts to be processed in hold-up time specified by paint / powder supplier company with due considerations of conveyor speed. Surfin modular Infrared heating gives advantages of lower heat loss, lower CAPEX, saving in floor space and quicker installation.
Gas:
Most suited when clean fuels like LPG / Propane / CNG are available as a fuel source. This increases overall efficiency by reducing heat loss through flue gases.
Gas Fired Ovens
Direct Gas Firing
Oil:
Oil fired indirect heating is also a popular source of energy in which mono block oil burner fires inside 4 pass heat exchanger. The oven recirculating air flows over the first pass STAINLESS STEEL drum followed by stainless steel tube banks and subsequently over the rest of the two tube passes. The flue gas residence time is carefully designed to keep optimum surface temperatures to achieve the highest heat exchange efficiency. The flue gases are exhausted out via an insulated duct to outside atmosphere following local pollution norms.
Gas Burner Accessories
Heater Box
Thermic Fluid:
This option is chosen when pretreatment hot tanks’ heating source / dry-off and liquid paint curing ovens’ heating source is to be kept same or at an existing plant location, offer spare capacity of heating through existing centralized Thermic fluid heater.
Indirect Heat Exchanger Box
Thermic Fluid