China Wholesale Custom Circuit Board Printing Suppliers - 4 Layer ENIG Impedance Half Hole PCB – Huihe
China Wholesale Custom Circuit Board Printing Suppliers - 4 Layer ENIG Impedance Half Hole PCB – Huihe Detail:
Processing Method Of Metallized Half Hole PCB Drilling
The specific metallized half-hole shall be processed in the following way: all metallized half-hole PCB holes shall be drilled in the way of drilling after drawing plating and before etching, one hole shall be drilled at the intersection points at both ends of the half-hole.
1) Formulate the MI process according to the technological process,
2) the metal half hole is a drill drill (or gong out), figure after plating, before etching two drill half hole, must consider the shape of the gong groove will not expose copper, drill half hole to the unit move,
3) Right hole (drill half hole)
A. Drill first, and then turn the plate over (or mirror direction); Drill hole on the left
B. The purpose is to reduce the pulling of the drill knife on the copper in the inner hole of the half hole, resulting in the loss of copper in the hole.
4) According to the spacing of the contour line, the size of the drill nozzle of the half hole is determined.
5) Draw resistance welding film, and the gongs are used as the blocking point to open the window and enlarge the window by 4mil
Equipment Display
PCB Automatic Plating Line
PCB PTH Line
PCB LDI
PCB CCD Exposure Machine
Factory Show
PCB Manufacturing Base
Admin Receptionist
Meeting Room
General Office
Product detail pictures:
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Our firm sticks on the theory of "Quality will be the life in the enterprise, and status could be the soul of it" for China Wholesale Custom Circuit Board Printing Suppliers - 4 Layer ENIG Impedance Half Hole PCB – Huihe , The product will supply to all over the world, such as: Denmark, Irish, New York, They are sturdy modeling and promoting effectively all over the world. Never ever disappearing major functions within a quick time, it's a have to in your case of fantastic good quality. Guided by the principle of "Prudence, Efficiency, Union and Innovation. the corporation. ake an excellent efforts to expand its international trade, raise its organization. rofit and raise its export scale. We have been confident that we've been going to have a bright prospect and to be distributed all over the world in the years to come.
By Alan from Bahrain - 2018.12.25 12:43
Although we are a small company, we are also respected. Reliable quality, sincere service and good credit, we are honored to be able to work with you!
By John from New Zealand - 2018.06.12 16:22