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Enamel Coating Process-Electrostatic Coating Method

Enamel Coating Process-Electrostatic Coating Method

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  • Time of issue:2021-10-27
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(Summary description)Enamel electrostatic spraying methods are divided into wet and dry powder electrostatic coating methods.

Enamel Coating Process-Electrostatic Coating Method

(Summary description)Enamel electrostatic spraying methods are divided into wet and dry powder electrostatic coating methods.

  • Categories:Company news
  • Author:
  • Origin:
  • Time of issue:2021-10-27
  • Views:0
Information

Enamel electrostatic spraying methods are divided into wet and dry powder electrostatic coating methods.

 

Wet electrostatic enameling method: When enameling simple-shaped utensils, electrostatic enameling can be used. When enameling, the positively charged utensils are sent to the enamel spraying room by a conveyor belt.

 

The enamel spraying room is equipped with special rods, which are used as electrodes for corona discharge. The two poles are connected to the negative electrode of the high-voltage power supply. The conveyor belt is connected to the positive electrode to lead to the ground. effect.

After the negatively charged ions are formed, they move to the vessel to cover it. The fine-particle spray is sprayed into a mist-like enamel slurry, which is sent to the spray booth under high pressure by the spray gun. The enamel particles meet the ions to form a thin layer of enamel. The maximum sedimentation rate is 80~100kv. The enamel slurry is used for This method needs to grind very fine (10-30 microns) and contains a small amount of clay. This application is fast and uniform, which can reduce waste, save materials and labor.

 

Dry electrostatic coating method: The biggest impact of modern enamel industry is the birth of dry electrostatic coating method. In the earliest days, electrostatic enamel powder was tried to be used in a variety of colors. After a long period of research work, the current situation is that dry powder electrostatic enamel enamel is mainly used in the ground coat, such as black, dark coffee, blue and gray. White and colored powder enamel are slowly being used. This type of powder enamel can be directly coated on steel plates, but this type of powder glaze requires special steel plates and proper pretreatment.

 

The advantages of dry powder electrostatic coating are as follows:

1. The most suitable for mass production, the process is simple.

2. Compared with wet enamel frit, it has the same or better quality.

3. No need to grind or water

4. No need to be dry, non-toxic, non-explosive

5. Up to 95% of raw materials are used

6. Reduce energy costs

7. Close the circulation line tightly, without air or waste gas pollution.

8. The quality is improved, the spraying pressure is low, and the surface of the enamel is smooth.

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湘ICP备17005568号-1      www.300.cn