All about the polymerization oven
The powder coating is formed in a powder paint polymerization oven. This is a kind of chamber, which, due to the high temperature, melts the particles of the powder applied to the product and ensures the curing of the coating.
A powder coating line is not possible without a polymerization oven. After all, the final coating is formed in it. It must be of good quality and strong enough to ensure complete curing of the paint. The oven should be chosen based on the products to be painted.
In this article, we have gathered everything you need to know about the polymerization oven.
Polymerization oven: mechanism and operating principle
The polymerization oven is a modular prefabricated structure with good thermal insulation. In quality devices, the outer walls are heated to a maximum of 40C. The oven has a heating element that can be easily and quickly reached in order to replace or carry out its prevention.
Also, the polymerization oven has a ventilation system that circulates air.
Its design is made for decreasing heat losses.
The curing ovens have a dedicated controller for the curing oven.
The oven controller has the ability to visualize, a non-volatile multi-day archive of electricity consumption, as well as the ability to make a graph of electricity consumption during the shift, which allows more efficient use of oven modes.
On the control panel the painter can set the necessary parameters of work. And make changes if necessary.
The painted product is loaded into the polymerization oven and the doors are closed. The device begins to heat up, as a rule, up to 180-200 C. The exact value depends on the type of paint. The required temperature for polymerization is indicated on the package. In the oven, the powder particles melt, turn into a film and indurate. Polymerization timing can take up to half an hour.
Varieties of polymerization ovens
Polymerization oven schemes may differ depending on the needs of a particular production. They can be made by order. The main factors affecting the operation of polymerization ovens are the type of fuel, the estimated power and the number of parts to be painted.
There are several types of polymerization oven.
In the box ones there is one opening through which the painted product is loaded and unloaded. They are suitable for coloring small items.
When large parts have to be painted or the amount of work increases it is better to put a tunnel oven on production. They imply a transportation system and have several openings. After one part is loaded, it is unloaded through the second.
There are polymerization ovens that run on electricity or carbon fuel (diesel fuel, fuel oil, gas).
Ovens can be induction, thermo-radiation and convective. The latest are the most popular. The heating in convective ovens occurs due to streams of heated air that move throughout the space of the device.
There are also horizontal and vertical ovens.
Only a specialist will be able to make calculations and choose the best polymerization oven for a specific production.
The size of the oven depends on the size of the painted parts. The design of the device allows the manufacturer to produce absolutely any size ovens, not just standard ones. If, over time, you need to increase the size of the oven, no problem. Thanks to the design of the oven, it is easy to add the missing volume.
