Infrared Powder Coating Curing
Infrared emitters and modules that melt, flow and cure powder coatings in minutes instead of long oven cycles.
How infrared changes powder curing
In a convection oven, hot air has to heat the whole part, often a heavy steel substrate, before the powder can melt and cure. Infrared radiation heats the powder layer and the part surface directly, so the coating gels and flows within a short time while the part as a whole stays cooler.
Infrared is used on its own for flat or simple parts, as a booster zone in front of an existing convection oven to gel the powder before it can be disturbed by air movement, or to increase the capacity of a line without lengthening the oven.
- Fast gelling: powder is fixed before air movement can disturb it
- Shorter heat-up and curing zones, smaller footprint
- Heat only where the coating is, with power adjusted to the part
- Instant on and off with shortwave emitters: no long warm-up
Shortwave, medium wave or both?
Shortwave emitters deliver very high power density and respond in a second or two, which suits gelling zones and thick metal substrates. Medium wave emitters are absorbed well by the powder itself and give a gentler cure, which suits heat-sensitive substrates such as MDF and plastics. Many lines combine both: shortwave to gel, medium wave or convection to finish the cure.
Modules, systems and complete ovens
We supply individual emitters for building your own heater banks, ready-to-install shortwave and medium wave heating modules with reflectors, and complete infrared drying and curing systems and ovens with control panels. For a new line we recommend a consultation with a sample part so that power, distance and conveyor speed can be sized correctly.
Which infrared heater fits?
| Heater type | Wavelength & response | Best for |
|---|---|---|
| Shortwave quartz (IR-A) | Peak about 1.0–1.4 µm, full power in 1–2 s | Gelling zones, steel and aluminium parts, high line speeds |
| Carbon / fast medium wave | Peak about 2 µm, full power in 1–2 s | Fast, gentler heating of thin parts |
| Medium wave quartz (IR-B) | Peak about 2.4–2.8 µm, full power in about a minute | Curing on heat-sensitive substrates (MDF, plastics) |
| Ceramic (IR-C, long wave) | Peak about 3–5 µm, heats up in several minutes | Slow, very even curing in batch ovens |
Wavelengths are typical values for each emitter type.
Recommended products
Frequently asked questions
Can powder coating be cured with infrared alone?
Yes, for many flat and simple parts infrared can melt and fully cure the powder. For complex shapes infrared is often combined with convection, using infrared to gel the powder quickly and convection to finish the cure in recesses.
Can infrared be added to my existing powder coating oven?
Yes. An infrared booster zone in front of a convection oven gels the powder quickly and can raise line capacity without extending the oven.
Which infrared wavelength is best for powder coating?
Shortwave emitters suit gelling and metal substrates thanks to their high power and fast response. Medium wave emitters give a gentler cure on heat-sensitive materials. Many lines use both.
Do you build complete infrared curing ovens?
Yes. We supply individual emitters, heating modules, and complete infrared drying and curing systems and ovens with control panels.
Related
Other applications
Tell us about your process
Share the material, line speed and the heater or lamp you use today. Our engineers in Chennai will recommend the right infrared solution.
