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The stainless steel also known as vitrified with vitreous enamel or porcelain, begins as a molten mixture of minerals in the same way as glass. During this process, the molten mixture is poured red hot through water cooled rollers and then broken into small fragments known as chips. The frit is ground and applied to the metal by applying powder or liquid then be baked at temperatures above 800 degrees. With this temperature, the frit melts and fuses with metal to create a new compound and inseparable as distinguished from a simple finish. The superior qualities of porcelain steel makes it an ideal surface for a variety of applications.

DEFINITION OF STEEL VITRIFIED

Definition of vitreous enamel and porcelain: vitreous or crystalline inorganic coating bound to the metal by melting at a temperature above 500 ° C for application to the steel.

• Enameled steel panel thickness: Panel of cold rolled steel formed initially and then glazing, either individually or in batches either. Thickness greater than 0.75mm.
• Thin enameled steel panel: Panel obtained by cutting the material of the upper layer of enamel porcelain or glass, produced on a continuous coating line on a web and then laminated onto a core material (core) or sandwich suitable that gives it its shape and strength. Thickness between 0.30mm to 0.75 mm.

FUNCTIONAL CHARACTERISTICS OF ENAMEL COATING

Adhesion tests according to standard EN 10209:1996 enamel adhesion to the substrate must be at least Class 3.

Porosity tests according to EN 14430, the number of pores detected must have limits of 10 poros/m2.

• Abrasion Resistance: This is determined using the apparatus and using sand paper TABER S33 and a mass of 1 kg, the resistance to abrasion, given as a mass loss after 1000 revolutions, should be 0.1 g or less.
• Impact resistance: According to ISO 4532 when the gun is operated with a force of 20 N, damage should not exceed 2 mm in diameter after 24 hours.
• Surface hardness: When it is determined by the method given in EN 101, the Mohs hardness of surface must be at least 5.
• Scratch resistance: When it is determined by the method given in ISO 15695, scratch resistance must be at least 7.
• Acid resistance: According to EN 14483-1:2004 enamel coatings for outdoor and indoor environments should have an acid resistance class A minimum. When tested to ISO 2742, enamel coatings for outdoor environments must have a mass loss of 18.5g/m2 maximum.
• Graffiti resistance: After 8 days of aging, inks, varnishes, lacquers or paints must be readily removable with suitable solvents no visible changes in brightness or color in the enamel surface.

• The glazed panels will be implemented in accordance with European standards UNI EN 14431. Production of panels under management EN ISO 2000:9001 Quality Certified.

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