Interpretation of the process principle of each production process of PCB board - lamination, drilling

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Pcb proofing, small and medium batch production
PCB circuit board production process

Cutting - inner layer graphics - lamination - drilling - electroplating - outer layer - solder mask - surface treatment - forming - electrical testing - FQC - FQA - packaging - finished product





Layer pressure

According to the requirements of MI, the inner core board and the PP sheet are stacked and fixed, and the inner core board and the PP sheet are combined under a certain temperature, pressure and time condition according to the process pressing parameters, and are pressed into a complete multilayer PCB. board.



Production process:

Browning - rivets - pre-discharge - stacking - hot pressing - cold pressing - stripping - X-RAY drilling - edge - the next process





A, browning

The purpose of browning is to increase the roughness of the surface of the copper foil and increase the contact area with the resin, which is advantageous for the resin to be sufficiently diffused and filled.

B, hot pressing, cold pressing:

Hot pressing

The plate pressed by the hot press is transported to the cold press by the transport vehicle, and the purpose is to gradually lower the temperature inside the plate under the action of the cooling water to better release the internal stress in the plate and prevent the plate from being bent.

C, remove the board:

The cold-pressed board is manually removed by a person. When the board is removed, the production board and the steel plate are respectively separated by paper sheets to prevent rubbing.



China Hardware Business Network
China Hardware Business Network
China Hardware Business Network






Drill hole

Use the drill on the rig to drill the required holes in the board at high and falling speeds.



Production process:

To board - drill positioning hole - upper plate - input data - drilling - first board inspection - red film - polishing peak - the next process



A, the role of drilling:

Drilling of circuit boards is suitable for component soldering, assembly and layer-to-layer conduction of circuit boards.

B, the role of aluminum sheet:

The aluminum sheet acts as a heat conduction in the drilling process; the positioning acts as a position; the effect of the peak of the aperture is reduced and the surface scratch is prevented.

C, polishing the peak:

When drilling, due to the different materials of the plates, there is a peak at the edge of the hole. After drilling, the hole should be polished with a manual sander.

D, red film:

When drilling the first plate of the drill, drill it together with the red film, and then use the hole point film to check whether the first plate of the drill hole has the problem of boring and missing drill. The first board is qualified. The red film can be used to check whether the batch production board has drilled. And missing drill problems.



China Hardware Business Network
China Hardware Business Network

Http://news.chinawj.com.cn Interpretation of the process principle of each production process of PCB board - lamination, drilling Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn Interpretation of the process principle of each production process of PCB board - lamination, drilling

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