1、 Overview of enamel steel plate:

I. Basic knowledge of enamel

1. What is enamel:

Porcelain enamel is a kind of composite material which melts inorganic glassy materials on the base metal and firmly combines with it.

2. Development history of enamel

Enamel originated from glass decoration.

The origin of ancient Egypt, followed by Greece.

In the 6th century, various kinds of enamel came out in Europe (enamel is also called enamel).

In the 8th century, China began to develop enamel.

In the 14th century, enamel technology became more and more mature.

During the Jingtai period of the Ming Dynasty in the middle of the 15th century, enamel products prevailed. Therefore, it is also called cloisonne.

Cast iron enamel was developed in Europe in the 19th century, laying the foundation for enamel to move from handicrafts to daily necessities.

The appearance of industrial enamel in the middle of the 19th century ushered in a new era of modern enamel.

（2） Development and application of enamel steel plate for architectural decoration at home and abroad

1. In the 1980s, enamel steel plates were widely used in external walls of buildings and large public facilities (such as stadiums, subways, etc.) in Europe.

2. After 2000, China began to use enamel steel plates.

3. Building enamel steel plate has been widely used in the decoration of subway, tunnel, exterior wall, hospital operating room, etc.

2、 Main raw materials used for enamel steel plate

A special zero carbon cold rolled steel plate for enamel

（2） Enamel glaze:

1. Underglaze

2. Surface glaze

3. Color base glaze

4. Enamel inorganic pigment

（3） Auxiliary materials:

1. Calcium silicate board, honeycomb aluminum board or fireproof coating

2. Aluminum film or galvanized sheet

3. Adhesives

4. Sealant

3、 Main production process of enamel steel plate

Blanking ->chamfering ->forming ->welding ->grinding ->pretreatment ->spraying ->firing ->film coating ->compact ->packaging ->transportation

（3） Main advantages and characteristics of enamel steel plate

Corrosion protection

moisture-proof

fire prevention

Environmental protection (non-toxic, non radioactive)

insulation

High hardness and scratch resistance

Easy to clean

Porcelain jade texture

Simple installation and convenient maintenance