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Enamel Frit Knowledge: Introduction To Enamel Cover Coat

Enamel Frit Knowledge: Introduction To Enamel Cover Coat

  • Categories:Company news
  • Author:Messi
  • Origin:
  • Time of issue:2023-02-08
  • Views:0

(Summary description)Enamel frits include enamel ground coat, enamel cover coat, edge enamel, decorative enamel, etc. The so-called enamel cover coat is the enamel frit coated on the ground coat layer

Enamel Frit Knowledge: Introduction To Enamel Cover Coat

(Summary description)Enamel frits include enamel ground coat, enamel cover coat, edge enamel, decorative enamel, etc. The so-called enamel cover coat is the enamel frit coated on the ground coat layer

  • Categories:Company news
  • Author:Messi
  • Origin:
  • Time of issue:2023-02-08
  • Views:0
Information

Enamel frits include enamel ground coat, enamel cover coat, edge enamel, decorative enamel, etc. The so-called enamel cover coat is the enamel frit coated on the ground coat layer, which is used to meet the requirements of whiteness, gloss, acid resistance and other requirements required by enamel products, so that enamel products have a smooth and practical enamel surface.

1. Basic properties of cover coat

The basic properties of enamel frit include mechanical properties, thermal properties, optical properties, chemical stability and other properties.

Mechanical properties: tensile strength, compressive strength, elasticity, impact strength, etc.;

Thermal properties: specific heat capacity, stress, thermal stability, viscosity, thermal expansion, etc.;

Optical properties: whiteness and gloss of enamel, etc.;

Chemical stability: stability to water, acid resistance, alkali resistance, atmospheric resistance, etc.

2. Types of enamel cover coat

The enamel cover coat can be divided into cast iron enamel, steel plate enamel, etc. according to the difference of the metal substrate. It can be divided into antimony cover coat, titanium cover coat, zirconium cover coat, etc. according to the difference of opacifying agent. There are dry enamel and wet enamel, and there are also enamel flower-based enamels for enamel decoration.

3. Firing of the enamel cover coat

The firing of the enamel cover coat is a process in which the cover coat and the ground coat are fused at high temperature to obtain a porcelain surface with smooth and delicate surface, acid and alkali resistance. The author has described in detail the firing reaction, state changes and characteristics of the enamel cover coat, for details, please refer to "Reaction, change and characteristics of the enamel cover coat firing".

Generally, the firing temperature of the enamel cover coat is 20°C lower than that of the ground coat. This is to prevent spots and black lines after firing. Only when the firing temperature of the enamel ground coat and the cover coat match properly can a good combination be formed. .

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湘ICP备17005568号-1      www.300.cn