Industrial porcelain enameling plants

Industrial porcelain enameling plants, processes and equipment

Porcelain enamel is applied as a protective and/or decorative coating on many different products, such as architectural panels, bath-tubs, barbeques, boilers, chemical vessels, cookers, heat-exchange panels & tubes, hollowware, microwave ovens, street signs, water heaters, washing machines, etc.

The selection of the most suitable enameling process is primarily determined by :

1) Substrate material (cast iron, sheet steel or aluminum)

2) Coating requirements (protective or decorative, number of colors)

3) Geometry of products

4) Production volume

An industrial porcelain enameling plant for sheet steel products has, depending upon the coating requirement & selected application method, three upto six successive process stages.

		Enameling processes
		Direct-on 1c/1f wet	Direct-on 1c/1f dry	2c/2f wet/wet	2c/2f dry/wet	2c/2f dry/dry	2c/1f wet/wet	2c/1f wet/dry	2c/1f dry/dry
Stage	Description	Direct-on 1c/1f wet	Direct-on 1c/1f dry	2c/2f wet/wet	2c/2f dry/wet	2c/2f dry/dry	2c/1f wet/wet	2c/1f wet/dry	2c/1f dry/dry
1	Metal pretreatment	X	X	X	X	X	X	X	X
2	Enamel preparation	X		X	X		X	X
3	Wet enamel application & drying	X		X			X	X
4	Powder enameling		X		X	X		X	X
5	Firing	X	X	X	X	X	X	X	X
6	Wet enamel application & drying			X	X
7	Powder enameling					X
8	Firing			X	X	X