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The effect of coating roller brush in PCB manufacturing industry

Release Time:2021-06-16
Views:12Time

Dacron brush strips in the PCB processing and manufacturing of the wide wireframe production and manufacturing industry, such as graphic boundaries/line distance > 200um(8 m IL), copper mooring thickness ≥35um is very ideal selection, sometimes can be opened to > 150um(=6mil). Because of the polyester strip brush's high rebound force, the PS paint brush will not damage the brush roller when the PCB board is warped or the twist drill is broken. It will not cause the brush roller imbalance and damage the PCB circuit board and brush roller when the operator makes mistakes such as forgetting the cooling and circulating water. The following will give you a detailed introduction of polyester strip brush in PCB processing and manufacturing effect.


1. The process of grinding and polishing after drilling. When the burr exceeds 75um, the following combinations are selected: 180# silicon carbide and 240# silicon carbide


2. The process of grinding and polishing after drilling, when the burr exceeds 50um, the following combinations are selected: 240# silicon carbide and 320# silicon carbide.


3. After drilling, the grinding and polishing process. When the burr is lower than 50um, the paint brush should be used in the following combinations: 320# silicon carbide and 320# silicon carbide.


4. Before the photosensitive film is solved, the following combinations are selected: 320# silicon carbide and 500# silicon carbide.


5.PTH post-treatment process, choose the following combination: 320# silicon carbide and 320# silicon carbide.


6. Green oil (anti-welding) to solve the problem before applying, choose the following combination: wash paint brush 500# silicon carbide and 500# silicon carbide.


7. Before solving the gold plate (including red golden fingers), choose the following combination: 800# aluminum oxide and 1000# aluminum oxide.




The effect of coating roller brush in PCB manufacturing industry