Anti - flow hanging of anti - paint process
Alleged flow is hanged, it is to point to manual when spraying 3 prevent paint, because operation is not proper, craft is not skilled wait for a reason, the 3 prevent paint that spray arrives circuit board surface produces flow phenomenon.The appearance of the product is affected and the drying time of the hanging point is prolonged.
1. Zhengzhou nut punching rod ensures that the sprayed surface is dry and clean;
2. Adjust the spray distance and moving speed according to the ambient temperature, humidity and ventilation;
3. Move at a constant speed and do not stay in rotation;
4. The paint film should be thin and even while ensuring complete coverage;
5. The paint film must be completely cured before the next spraying.
The quality of paint film on the three anti-paint "three" effect has a great impact, non-standard rubbing board hope customers in the process of use in combination with the actual situation of production, non-standard nut punching rod to determine the strict production process, in order to achieve the best protection, efficiency, saving effect.
Notes for three - paint - proof operation
As a result of 3 prevent paint breed are very much, characteristic each different, the product that aim at also has each distinctive feature, the operation craft is natural increasingly diversification, but ten thousand change from its ground, always have some common place to be worth everybody attention.
1. The operating temperature of the coating shall be between 15℃ and 30℃. The relative humidity shall not be higher than 85%.In order to make the three anti-paint to play a full protective role, eliminate no luster or white hygroscopic phenomenon, the circuit board can be preheated baking, vacuum drying, to remove most of the moisture.
2, three anti paint generally contains combustible solvent, should avoid high temperature and open fire;Three anti paint generally has a slight pungent smell, the operation workshop should be enough ventilation, in order to facilitate the three anti paint solvent volatilization and rapid curing;Avoid prolonged inhalation of steam and prolonged contact with skin;The solidified workpiece is harmful to human body, but the coating should pay attention to safety and protection, the environment should be ventilated, the staff should wear a protective mask.
3. If a thicker coating is desired, it is preferable to obtain it by applying two thinner coatings, which must be allowed to apply a second coating after the first coating has completely dried.
4, to the circuit board coated with three anti-paint, the general connector, socket, switch, sensitive devices, insert board area is not allowed to have coating materials, must use the appropriate cover technology.
5, used brush, spray gun and other appliances should be promptly washed with special thinner, in order to save the next use.
6, do not pour out the three anti - paint back to the original packaging, so as not to pollute the unused three anti - paint.Unused paint should be sealed in a cool place to store for next use.
7. Repair the parts that have been coated with three anti-paint coating, remove the components by directly contacting the coating room with welding electrocautery, then install new components, and clean the area with a brush or special thinner;After drying, re-coat with three - proof paint.