-
Cambiar idioma
Español -
International phone contact
+52(55) 1084 1300 -
Email contact
international@alfher.com.mx
Porcelain Enameled Steel
About us
Porcelain Enameled Steel Fabrication Process
1. Steel cutting and shaping
The enameling steel sheets are cut in different sizes according to the fabrication drawings.
2. Steel stamping
Specific cuts, holes and patterns are performed by a CNC turret press.
3. Steel bending
Bending machines are used to create the flanges and returns of each panel according to the fabrication drawings.
4. Welding
Corners and joints are welded completing structuring the pieces.
5. Grinding
All edges are grinded smoothly ensuring a proper enameling surface and repairing minor scratches that may appear on the surface.
6. Pre-treatment
All pieces are subject to a special pre-treatment cleaning in order to eliminate grease, oil or rust and to get a surface ready to receive the enamel.
7. Ground coat application
To each panel is applied a first layer of a ground coat on its surface, whether exposed or not exposed, the ground coat will serve as a protection layer that will be used as a proper base to receive the final color coat.
8. First dry
After the ground coat application, the piece goes through a drying tunnel at temperatures ranging from 100 (212°F) to 150 °C (302 °F), evaporating the moisture. The enamel is now in a” bisque” unglazed form on the steel.
9. Ground coat furnacing
These pieces will be furnaced at temperatures ranging from 835 (1535°F) to 860°C (1580°F), fusing the porcelain enamel with the steel.
10. Color coat application
It’s the process of using a spray gun to apply the final color coat. This layer will give its finish to the fabricated piece.
11. Second dry
Once the color coat has been applied, the wet piece will go through a drying tunnel at temperatures ranging from 100 (212°F) to 150 °C (302 °F), getting rid of water remains, leaving the color coat layer again in that ”bisque” unglazed form on the steel.
12. Color coat furnacing
The color coat layer must be furnaced according to its color formula at temperatures slightly under 800 °C (1472 °F).
13. Screen printing process
Using screens, films, and special porcelain color inks, we can display images on our porcelain enameled piece. The final image will be as resistant as the rest of the panel itself since all components are vitreous (porcelain enamel). A wide variety of colors can be achieved and even high resolution images.
14. Screen printing drying and furnacing
Screen printed pieces will be dried in a drying table or in the drying tunnel at temperatures around 100 °C (212°F) and will be furnaced afterwards.
15. Substrates
Different core materials will be laminated according to the design criteria specified for each job, giving additional strength, thermal and fire resistance properties.
16. Cleaning and Packing
The finished product will be cleaned and inspected by our Quality Control personal previous to final packaging and delivery.