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
Technology, equipment and technical services
Simplification of enameling processes and/or equipment may result in :
Mill addition | Function |
Aerosil | Set-up |
Aluminium oxide | Matting agent and to increase heat resistance of ground coat |
Aluminium hydroxide | Equivalent to aluminium oxide |
Aluminium powder | Increase heat resistance in ground coat |
Antimony trioxide | Increase adherence of ground coat |
Barium chloride | Set-up in cover coat |
Barium carbonate | Set-up in cover coat |
Bentonite | Set-up |
Borax | Set-up in ground coat |
Boric acid | Set-up |
Cadmium oxide | Stabilize Cd-Se red enamels |
Clay | Provide bubble structure |
Cupric chloride | Self lustre enamel 1118 |
EK-1000 | For continuous clean enamel |
Feldspar | For ground coat |
Gumst | Increase filmstrength |
Magnesium chloride | Set-up cover coat |
Magnesium nitrate | to increase suspension and to prevent fishscales |
Opacifier UV | Opacifier |
Potash | Set-up |
Potassium choride | Set-up cover coat |
Potassium nitrate | Oxidizing agent for aluminium enamels |
Quartz | to increase firing range and matting agent |
Silicic acid | Set-up |
Silver sand | For heat resistant ground coat |
Soda ash | Set-up in ground coat |
Sodium aluminate | Set-up in cover coat |
Sodium nitrite | Set-up in ground coat |
Sodium pyrophosphate | To decrease set-up |
Sodium silico fluoride | Set-up cover coat |
Tinoxide | Opacifier |
Titanium dioxide | Opacifier |
Trisodium phosphate | To prevent rusting in cast iron ground coat |
Urea | To prevent hairlines in cover coat |
Zirconite | Opacifier |
Zircon oxide | Opacifier |
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 :