Ditmer Trading & Consulting BV developed together with Alpha Robotica & Franken Techniek two semi automatic flow coating machines for wet enameling the in- & outside of complex shaped heat exchangers.
Simplification of enameling processes and/or equipment may result in :
- Improved surface quality
- Reduced enameling cost
- Shorter process time
- Faster process feedback
- Reduction of factory space
- Saving energy
Prior to the actual application, porcelain enamel slip need to be prepared in accordance with the application requirements, such as fineness, set and specific gravity.
The traditional wet enamel preparation process (“milling”) consists of the following seven sequential steps :
- weighting of various frits & additions in accordance with the milling formulation
- loading ball mills
- adding water
- wet milling
- discharging ball mills
- sieving & magnetic screening of slip