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aluminum sheets for circuit board drilling

2019-05-27

 Aluminum drilling entry, also known as PCB circuit boards, are generally used for insulation boards for electronic products. PCB, also known as printed circuit board. The circuit board is generally composed of a circuit and a picture surface, a dielectric layer, a hole, a solder resist ink, a silk screen, and a surface treatment. The hole is a guide through hole, so that the lines above two levels are electrically connected to each other, and the larger through hole It is used as a part insert, and non-conducting holes are usually used for surface mount positioning, and are used for fixing screws during assembly. Aluminum gaskets are suitable for drilling circuit boards.

The use of aluminum sheets for circuit board drilling has the following advantages:
1. The aluminum sheet effectively prevents the drill bit from being indented and scratched on the surface of the copper clad plate during the processing.

2. It can provide positioning and guiding function during the downward process of the drill bit to improve the positioning accuracy of the drilling.

3. The aluminum sheet has excellent heat conduction function, which can quickly dissipate the heat generated by the friction when the drill bit is drilled at high speed, effectively prevent the bit from overheating, thereby improving the life of the drill bit and better the condition of the hole wall.

4. The aluminum drilling entry prevents burrs on the surface of the copper foil plate during high-speed drilling.

The aluminum alloy commonly used for aluminum drilling entry is 1100 coils, 1060 aluminum coils, and 3003 aluminum sheets. The aluminum content is over 99%, the state is mainly H18, the common thickness is 0.125-0.24mm, and the coil width is about 600mm. With a width of 1244/1245mm, aluminum gaskets are widely used in communications, aerospace, automotive, military, electric power, medical, industrial control, electromechanical, computer and other fields.


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