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How to make a fast prototype for PCB circuit board

What is the pcb board proofing procedure? The main steps include printed circuit board, Prototype PCB Assembly, cut copper clad board, pre processed copper clad board, transfer circuit board, corroded circuit board, circuit board drilling, circuit board pre treatment , testing and final inspection.

 

Printed circuit board: Print the drawn circuit board with transfer paper. Note that the sliding side faces itself. Generally, two boards are printed, that is, two boards are printed on one sheet of paper. Choose the production board that has the best print quality. Photographically plated with a drawn base image, the layout size should be the same as the PCB size.

Printed circuit board: Print the drawn circuit board with transfer paper. Note that the sliding side faces itself. Generally, two boards are printed, that is, two boards are printed on one sheet of paper. Choose the production board that has the best print quality. Photographically plated with a drawn base image, the layout size should be the same as the PCB size.

 

PCB photo-forming board: film cutting-exposure-development-fixing-washing-drying-repairing, it should be noted that the correctness of the check basemap should be checked before performing the camera. Before exposure, the focal length should be adjusted, and the double-panel phase plate should be adjusted. The two focal lengths of the front and back photography should be consistent.

 

Cutting CCL: Using the photographic plate to make the whole circuit diagram.

Pretreatment of copper clad laminate: The oxide layer on the surface of the clad laminate is polished with fine sandpaper to ensure that the toner on the thermal transfer paper can be firmly printed on the clad laminate when the circuit board is transferred.

 

Transfer circuit board: Cut the printed circuit board into a suitable size, and attach the printed circuit board side to the copper clad board. After aligning, put the copper clad board into the heat transfer machine, and ensure that the transfer is carried. The paper is not misplaced.

 

Corrosion circuit board: After the PCB is coated with surface metal, it can be soldered or soldered according to different needs.

Drilling of circuit board: Different drill pins are selected according to the thickness of the electronic component pins. When drilling with the drilling machine, the circuit board must be stabilized, the speed of the drilling machine cannot be opened too slowly, and the drilling should pay attention to safe operation.

 

Circuit board pretreatment: After drilling, use the fine sandpaper to polish the toner on the circuit board and clean the circuit board with clean water. After the water is dried, the pine perfume is applied to the side of the line, and the circuit board is heated by a hot air blower to make the bell rosin solidify rapidly.

 

Test and final inspection: After soldering the electronic components on the board, the electronic 100% test, the open circuit, short circuit, etc., which are not easily found by visual inspection, affect the functional defects, and repair these defects to avoid problems and defects. Flow out.

 

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