New edition of EEA Quality Manual
The European Enamel Association (EEA) has released the sixth edition of their Quality Manual. This document is made by the association in order to help...
Importance of process validation
Industrial porcelain / vitreous enameling plant projects are usually very complex and require considerable capital investments. Important decisions must be made at the beginning of...
Adherence strength of enamel
The adherence strength of enamel to steel is tested by dropping a steel ball on the coated surface. The adherence is evaluated based on the...
Lumps
Lumps are common enamel defects, which are characterised by rounded raised areas with typically a diameter between 3 to 12 mm.
Scaling
Scaling is a common enameling defect, which is caused by contamination with materials with a higher melting temperature than enamel.
Blisters
Blisters are a common enamel defect, which is characterized by appearance of circular holes & bubbles in a cooled enameled surface.
Fishscaling of porcelain/vitreous enamel coatings
Fishscaling is an enameling defect, which is characterized by small enamel particles chipping off.