What is the Corrosion Process of PCB Board Circuit?
PCB board, also known as printed circuit boards, printed circuit boards, referred to as printed circuit boards, English abbreviation PCB (printedcircuitboard or PWB (printedwiringboard), insulated board as a substrate, cut to a fixed scale, which is accompanied by at least one conductive graphics, and cloth with holes (such as component holes, fastening holes, metallization holes, etc.), used to Replace the previous device electronic components of the chassis, and realize the interconnection between electronic components.
The pcb board is a very important electronic component, is the support body of electronic components. pcb circuit board copy board is corroded problem has been plagued by many businessmen. This time, Changbo will talk to you about the corrosion process of pcb board!
PCB board corrosion method:
A. With a corrosion solution, generally able to corrode multiple circuit board copy board at a time, corrosion solution is generally equipped with ferric chloride with water and become, ferric chloride is a solid earthy yellow, but also easy to absorb water in the air, so it should be sealed and stored.
B. PCB Circuit Board Corrosion Steps:
a, Equipped with a good corrosive solution, the first from the pcb board edge to start corrosion, when the copper foil is not covered with toner corrosion should be removed in a timely manner after the circuit board, to avoid the toner fall off corrosion off the useful lines.
b, After removing the corroded circuit board copy board, it is necessary to flush with water, but also to use fine sandpaper to polish the carbon powder. Then wipe dry, it reveals the shiny copper foil, finished circuit board production.
c, In order to good preservation of PCB board, will generally use rosin solution coated with a polished circuit board, so that both flux, but also to prevent oxidation.
C. PCB Circuit Board Copy Board Corrosion Process:
a, Corrosion solution is generally equipped with ferric chloride with water and become, ferric chloride is a yellow solid, but also easy to absorb water in the air, so it should be sealed and stored. Equipped with ferric chloride solution is generally 40% of ferric chloride and 60% of water, of course, more ferric chloride, or with warm water (not hot water, to prevent paint peeling) can make the reaction faster pay attention to ferric chloride corrosive, try not to touch the skin and clothes, reaction container with a cheap plastic pot, put down the PCB board circuit board on the good.
b, From the edge of the beginning of the corrosion of PCB circuit board, when the copper foil is not painted corrosion should be taken out of the circuit board in a timely manner, in order to prevent the paint from falling off after corrosion off the useful line. At this time with water flushing, while using bamboo chips and other things to scrape off the paint (this time the paint from the liquid out, relatively simple to remove). If it is not easy to scrape, with hot water can be rinsed. Then dry, sandpaper clean, revealing the shiny copper foil, a printed circuit board is done. In order to preserve the effect, generally use rosin solution coated with a polished PCB board, both flux, but also to prevent oxidation.
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