Microwave technology inside Dymotec

Dymotec, a company that automates industrial processes, decided after 17 years that it was time to diversify. At that time, a professor at the university of Leuven who was an expert in microwave technology came to them, asking if they were interested in building a machine based on microwave technology.

Dymotec originally started making a “microwave” that was able to replace an oven used for a manufacturing process called lost-wax casting: a method of casting, in which a mould is formed around a wax pattern, which is subsequently melted and drained away.

With a convention industrial oven, the dewaxing of a mall can easily take more than a week. This is because the temperature of the mall has to rise very slowly and even to ±700 degrees for the wax to get out without making any cracks in the shell.
With the new microwave machine, the wax could be removed much faster and much environmentally friendlier: it takes 1/10th of the time, 1/4th of the energy and you have the possibility of re-using the wax.

When they were building and testing this machine, they realized this technology could be used for a lot of other processes. Now it’s even possible to dry wood or powders (we will explain this in one of our next blogposts).

A while ago, Dymotec did tests for a company that ships quarrying across the world. The company was able to dry the material to 30% (mening there is still 30% water in the product). With Dymotec’s technology, they will beable to go to 0%, and therefore carry 30% more of the product.

The prototypes proved this technology could reduce a company’s carbon emission drastically. This is because all heating processes go much faster, so there’s much less energy required. This, off course, interests a lot of multinationals.

We think microwave technology will change a lot of industrial processes for the better. Do you?

full article(Dutch) & short movie(Dutch):  Screenshot 2013-10-21 15.10.03



2 thoughts on “Microwave technology inside Dymotec

  1. So far as I know the traditional oven use heat transfer method to heat the object. While the microwave makes the molecules inside the object vibrate or move fiercely and rub each other so as to heat the object by using the inner heat generated from that friction.
    In this words, may this friction cause some defects to the object? Like the strength when compared with using traditional oven. Or are there some limitations of this technology? Thank you!

  2. A traditional oven uses the medium in between to transfer heat (=not energy-efficient!), microwave heating is a volumetric heating involving conversion of electromagnetic energy into thermal energy, which is instantaneous, rapid and highly efficient.
    This results in a fine microstructures and hence improved mechanical properties and better product performance…

    Until recently, microwave heating has been applied to sinter only oxide ceramics and semi-metals like carbides and nitrides. However, our research reveals that in powdered form, virtually all metals, alloys, and intermetallics will couple and heat efficiently and effectively in a microwave field. This research is just at the early stages, and it will be a long time before the exact mechanisms are elucidated.

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