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What kind of production process is used in enamel directly determines the level and quality of the product. The enamel factory will choose the enamel process according to the metal type, shape, and volume quality of the green body. Generally, it is divided into two categories: wet enamel coating and dry enamel coating. So which one costs more, dry powder enamel or wet powder enamel? What are the advantages and disadvantages? How to choose an enamel factory? After reading this article, I believe you will have the answer.
(1) Dry powder enamel
Dry powder enamel is the abbreviation of electrostatic dry powder automatic adsorption process, also known as electrostatic enamel. The enamel powder is electrostatically sprayed, adsorbed on the metal surface, and then sintered at a high temperature above 800 °C, so that the expansion coefficient of the enamel powder and the steel plate can be nearly the same. The biggest advantage of dry electrostatic enamel coating is that the utilization rate of enamel can reach 97%~98%. The enamel dry powder can be used directly without grinding the enamel slurry. high.
The service life of dry powder enamel is 2~3 times that of ordinary wet enamel, but the cost is also 2 times. The equipment of dry powder enamel is expensive and suitable for powerful enamel manufacturers. Dry powder enamel is a high-quality advanced process, generally used in enamel ovens, water heaters, microwave ovens, washing machines and other household appliances, and gradually extended to kitchen utensils and wall panels.
(2) Wet enamel
Enamel powder and other raw materials are ground into enamel slurry with water, and then enamel is applied to the surface of the casting and then sintered at high temperature. Because the liquid spraying process is not like electrostatic spraying, it is easy to flow unevenly, and it will cause enamel defects such as blasting in case of shocks. However, the investment in equipment is small, the price is cheap, and the production is simple. The enamel products made by this process are often used in enamel products such as daily necessities and decorations.
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Why Do Enamel Factories Use Electrostatic Dry Coating?
Electrostatic dry enamelling is known as one of the greatest achievements of the enamelling process. It was first put into practical use in advanced countries in Europe and America, and then popularized in Japan, Spain and other countries. As we all know, electrostatic dry enamel coating requires high equipment, and the equipment cost is higher than traditional wet enamel coating. Even so, in China, there are still many large-scale enamel factories producing high-end products who choose to use electrostatic dry enamel coating. why? Simple process is the development trend of the enamel industry Throughout the history of enamel development, the progress of enamel technology is influenced by other industries on the one hand, such as the improvement of iron and steel smelting technology and the advancement of chemical technology, which continuously stimulate the progress of enamel manufacturing technology; on the other hand, it is affected by the needs of the times. Influence, in the past, the enamel industry pursued high quality, high purity and low price, but today, it pursues production efficiency, specialization and refinement development. The electrostatic dry enamel coating method uses the enamel dry powder directly without grinding it into a enamel slurry, omitting the drying process after ball milling and spraying, and has a high degree of mechanization, so it is popular in large enamel factories. The enamel production line using dry electrostatic coating has been extended to microwave ovens, dishwashers, water heaters, washing machines and other household appliances or kitchen utensils wall panels, etc., and will continue to be popular in the future. The enamel factory itself has brand strength Dry electrostatic spray enamel system includes electrostatic spray gun, elevator, powder supply barrel, material supply and return system, filter screen, magnetic separation device, spray booth, recovery system, etc. The cost of a set of equipment is high and not suitable for small cost batches Production. However, for powerful enamel manufacturers, the use of electrostatic dry enamel coating is more suitable for production in the long run, which can improve the utilization rate of enamel, reduce raw material costs, improve product quality and pass rate, and reduce product defects. The advantages of electrostatic dry method are outstanding In addition to the above advantages, the advantages of dry electrostatic enamel coating are: it can improve the quality of the porcelain surface of the enamel product and reduce the defects of the porcelain surface at the edge; two enamels and one firing process can be used, and there is no need to use special decarburized steel plates for enamel, etc. . Dry electrostatic spray enamel has high requirements on the accuracy of the particle size of the porcelain powder and the thickness of the porcelain layer.
How do you dry and make powder out of blueberry?
how do you dry out a powder that got damp
Why mount rifle over fireplace?
It was a warm, dry place, higher than a child could reach, but the rifle could be reached in a hurry. Warm and dry- as in "keep your powder dry".
How many tablespoons in 12.22 grams of dry powder?
Depends entirely WHAT the dry powder is.
Why can you put out the television fire by Dry powder fire extinguisher?
Because that is what the Dry powder (or Dry Chem.) is made for.
What is the duration of Keep Your Powder Dry?
The duration of Keep Your Powder Dry is 1.55 hours.
When was Keep Your Powder Dry created?
Keep Your Powder Dry was created in 1945-04.
Dry powder 21 grams equal tablespoons?
Depends what type of "dry powder". -Salt and flour are both dry powder, yet have vastly different density
Can you mix fast dry enamel and acrylic?
Of course you CAN, but they will separate before you begin to apply them if it's a really fast setting enamel. The acrylic will run down over the enamel.
How does a dry cell work to provide electricity?
Geetohika is the enamel uthe
Can you replaced water based paint with quick dry enamel?
Yes you can.
What is dry lighting?
powder
