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Electrostatic Powder Enamel Coating Method
- Categories:Company news
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- Time of issue:2022-02-18
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(Summary description)Electrostatic enamel powder is now well known by enamel manufacturers. It does not need to be ground during use, which reduces the process links.
Electrostatic Powder Enamel Coating Method
(Summary description)Electrostatic enamel powder is now well known by enamel manufacturers. It does not need to be ground during use, which reduces the process links.
- Categories:Company news
- Author:
- Origin:
- Time of issue:2022-02-18
- Views:0
Electrostatic enamel powder is now well known by enamel manufacturers. It does not need to be ground during use, which reduces the process links. Its raw material utilization rate is as high as 95%, which can save costs, and because it reduces the pressure of spray enamel, it improves the efficiency. The quality of the product and the smooth surface of the enamel products made are suitable for mass production in enamel factories.
Electrostatic dry powder coating method enamel glaze is mainly used in the base glaze, such as black, brown, blue and gray. White and colored powder glazes are also slowly used with the development of enamel glazes, but enamel manufacturers need to pay attention to proper pretreatment of steel plates during use.
In addition to the spraying device, the dry powder electrostatic coating method also requires a constant temperature and humidity air conditioning system to control changes in temperature and humidity. The process parameters are: a gun sprays about 0.5㎡ (about 129um) in 1 minute, the voltage is 80Kv, the current is 1.2mA, the indoor temperature is 22~25℃, and the relative humidity is lower than 50%.
Determination of dry powder adhesion amount (STPA) measurement method and results:
The measurement of electrostatic dry powder adhesion requires the use of a specially made impact meter. Take a stainless steel plate covered with dry powder and hang it on the impact meter. Weigh the weight first, and then impact it with a 150g round bar. At this time, a part of the dry powder will fall off. , weigh the weight after impact, multiply the quotient of the weight before and after by 100%, which is the percentage value of the adhesion amount, which is called the determination of the dry powder adhesion amount (STPA).
STPA>70% very reliable
STPA 60~70% with risk
STPA<60% can not be fired
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