Part One:What is the glass liner(enamel liner)?
The one or more layers of glass-lined glaze coated on the steel plate are firmly attached to the steel substrate after being fired and melted. The resulting composite material is called glass-liner.
Definitions:
(1) Composed of two materials;
(2) When firing at high temperature (850-920ºC), physical and chemical reactions occur;
(3) The two materials are closely and firmly bonded;
(4) It is a new composite materials with special properties.
Part Two: the formation of the glass-lined layer:
We can't think that as long as the glass-lined glaze is fired, it can become a glass-lined layer (referred to as a porcelain layer). In fact, in this evolution process, it has experienced a series of extremely complicated physical and chemical reactions. The ceramic layer not only includes the bottom ceramic layer and the top ceramic layer, but also includes the inter-diffusion layer between the steel plate and the bottom ceramic layer, the bottom ceramic layer and the top ceramic layer.
So that the porcelain layer is firmly attached to the surface of the steel. Generally we divide the glass-lined layer into 5 layers:
1. The adhesion layer between the surface of the steel plate and the glaze-----It is the first interpenetrating layer;
2. The ground enamel(porcelain) layer;
3. The interpenetration layer of the ground porcelain layer and the surface enamel(porcelain) layer-----It is the second interpenetration layer;
4. Surface enamel(porcelain) layer;
5. Top cover layer.
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