What is a three anti-paint coating machine
Three anti-paint coating machine manufacturer Chengyuan Industry will explain to you that we know that circuit boards are very delicate products, and the dust, mold, and moisture in the air are enough to cause damage to them, which will cause leakage of circuit boards, signal distortion, etc. question. Therefore, the way people think of is to add a layer of protective clothing on the circuit board, just like we wear raincoats on rainy days. However, this layer of clothes is not so easy to put on. How to control the uniformity of the coating and how to control the thickness is a lot of knowledge. Initially, it was operated manually, which was time-consuming and labor-intensive. Later, a three-proof paint coating machine appeared, which is a machine specially used to coat circuit boards. The coated material is called many times, such as three-proof paint, three-proof glue, waterproof oil and so on. After using the coating machine to add this protective layer, the service life of the circuit board will be greatly enhanced, and the mechanical strength and insulation properties of the product will be improved.
What are the technical requirements for coating PCBA conformal paint?
First of all, it is necessary to distinguish between the parts that cannot be coated and the parts that must be coated. The parts that cannot be coated include electrical connection parts, gold fingers, test holes, etc., batteries, fuses, sensors, solder joints, and component conductors must be coated.
(1) Coating thickness: the film thickness is between 0.005mm-0.15mm, and the dry film thickness is 25μm-40μm.
(2) Surface drying: Ventilate for 20-30 minutes after coating to make the surface dry, and it can be used after drying, but avoid collision during the process.
(3) Paint curing: It takes 8-16 hours to cure at room temperature.
(4) Second drying: Secondary drying can be carried out after the paint is cured to ensure the reliability of product thickness.
(5) The minimum distance between painted and non-painted components in PCBA is 3mm.
The harm of three anti-paint to human body
Whether the three anti-paint is toxic depends on the type of thinner and solvent used for the three anti-paint. If the three anti-paint uses toluene or xylene as a thinner, this chemical is harmful to the human body. Small. Xylene is moderately toxic and irritating to the eyes and upper respiratory tract. In high concentrations, it has an anesthetic effect on the central system. If you apply the three anti-paint by hand, you should pay attention to the protection measures.
General ventilation: ensure that the working environment is ventilated
Storage Note: The conformal paint should be kept in a ventilated place, and the bottle should be covered to prevent overflow when not in use.
Hygiene: Good personal hygiene is very important. Before eating, drinking or smoking, you should wash your hands, wear a mask and protective clothing
Of course, if you use a three-proof paint coating machine for automatic coating, the risk of automatic coating will be greatly reduced. Most of the current factories have already used full-automatic three-proof paint coating machines for production. There are also many coating machine manufacturers. When choosing, you must find a manufacturer with technical strength.
PCB coating machine quotation
Domestic brands range from about 80,000 to 250,000 according to the configuration. Shenzhen Chengyuan Industrial Automation Coating Machine has been deeply cultivated for more than ten years and has accumulated a large number of patented technologies. It is a professional manufacturer of automation equipment and focuses on cost performance. It is your best choice .
Post time: May-23-2023