Aluminum gaskets are also known as PCB circuit boards, and are generally used as heat insulation boards for electronic products. PCB, also known as printed circuit board. The circuit board is generally composed of six parts: circuit and drawing, dielectric layer, hole, solder mask, silk screen, and surface treatment. Among them, the hole is a guide through hole that can make the lines of more than two levels connect to each other, and the larger through hole It is used as a part plug-in. In addition, non-through holes are usually used as surface mount positioning and fixing screws during assembly. The aluminum gasket is suitable for drilling circuit boards.
PCB entry sheet for PCB drilling have the following advantages:
1. The aluminum sheet effectively prevents the drill tip from indentation and scratches on the surface of the copper clad laminate during processing.
2. It can provide positioning and guiding function during the downward process of the drill bit to improve the positioning accuracy of drilling.
3. The aluminum sheet has an excellent thermal conductivity function, which can quickly dissipate the heat generated by friction when the drill is drilled at high speed, effectively prevent the drill from overheating, thereby improving the life of the drill and better hole wall conditions.
4. PCB entry sheet prevents burrs on the surface of the film copper foil board during high-speed drilling.
The commonly used aluminum alloys for PCB entry sheet are 1100 coils, 1060 pcb aluminum entry sheet, and 3003 pcb entry aluminum sheet. The aluminum content is more than 99%. The state is mainly H18. The common thickness is 0.125-0.24mm, and the coil width is about 600mm. The width of the material is 1244/1245mm, and aluminum gaskets are widely used in communications, aviation, automobiles, military, electric power, medical treatment, industrial control, electromechanical, computer and other fields.
