QuickPCB Quickturn PCB Prototype,small /medium batch PCB manufacturer

 

Aluminum Core PCB Process Flow

First, the material is opened

Cutting process

Picking--cutting

Purpose of cutting

Cut large sizes of incoming material into the required size for production

3, precautions for opening materials

1. The first piece of material is checked for the first piece size


2 Pay attention to aluminum scraping and copper scraping


3 Note the edge layering and edging

Second, drilling


1, the drilling process


Selling nails--drilling--checking board


2, the purpose of drilling


Positioning the plate for drilling provides assistance for subsequent production processes and customer assembly


3. Precautions for drilling


1 Check the number of holes and the size of the holes


2 Avoid scratching the sheet


3 Check the surface of the aluminum surface, the hole deviation


4 Check and replace the drill in time


5 Drilling is divided into two stages, one drill: after drilling, the hole is a peripheral tool hole


Two drills: tool hole in the unit after solder mask


Third, dry / wet film imaging


1, dry / wet film imaging process


Grinding plate--film-exposure--development


2, dry / wet film imaging purposes


Presenting the parts needed to make the line on the sheet


3, dry / wet film imaging considerations


1 Check if there is an open circuit on the line after development


2 Whether there is deviation in the development alignment to prevent the generation of dry film


3 Pay attention to the bad line caused by the surface wipe


4 There should be no air residue during exposure to prevent poor exposure


5 After the exposure, it should be static for more than 15 minutes before developing.


Fourth, acid / alkaline etching


1, acidic / alkaline etching process


Etching - peeling film - drying - check board


2, acid / alkaline etching purposes


After the dry/wet film is imaged, the required portion of the line is retained, and the excess portion other than the line is removed. When the acid etching is performed, the etching of the aluminum substrate by the etching solution should be noted;


3, acidic / alkaline etching considerations


1 Note that the etching is not clean, excessive etching


2 Note the line width and line fine


3 The copper surface is not allowed to be oxidized or scratched.


4 Rewind the film to be cleaned


Five, silk screen soldering, characters


1, silk screen soldering, character flow


Silk screen--pre-bake--exposure--development--character


2, silk screen soldering, the purpose of the character


1 Anti-weld: protects the circuit that does not need to be soldered, prevents tin from entering the short circuit


2 characters: play a role


3, silk screen soldering, character notes


1 Check the board for any rubbish or foreign objects

2 Check the cleanliness of the stencil

3 After silk screen printing, pre-bake for more than 30 minutes to avoid bubbles on the line.

4 Pay attention to the thickness and uniformity of the silk screen


5 Pre-baked plate should be completely cooled to avoid staining or destroying the gloss of the ink surface.


6 The ink is placed face down when developing


Sixth, V-CUT, seesaw


1, V-CUT, the process of the seesaw


V-CUT--锣板--Tear Protective Film--In addition to the front


2, V-CUT, the purpose of the seesaw


1 V-CUT: The single PCS line is cut with a small portion of the whole PNL plate for easy packaging and removal.


2 锣 board: remove the excess part of the board


3, V-CUT, the considerations for the seesaw


1 V-CUT process should pay attention to the size of V, the edge of the defect, burr


2 Pay attention to the burr when the fascia is made, the boring tool is skewed, and the boring tool is checked and replaced in time.


3 Finally, avoid scratching the board when removing the front.


Seven, test, OSP


1, test, OSP process


Line test--withstand voltage test--OSP


2, testing, the purpose of OSP


1 Line test: Check if the completed line is working properly


2 Withstand voltage test: Check if the completed line can withstand the specified voltage environment


3 OSP: Make the line better soldering


3, testing, OSP considerations


1 How to store qualified and non-conforming products after how to distinguish after testing


2 After the OSP is placed


3 Avoid damage to the line


Eight, FQC, FQA, packaging, shipping


1, the process


FQC--FQA--Packaging--Shipping


2. Purpose


1 FQC confirms the product


2 FQA sampling verification


3 Pack and ship to customers according to requirements


3, pay attention


1 FQC pays attention to the confirmation of the appearance during the visual inspection, making a reasonable distinction


2 FQA really checks and tests the FQC inspection standards.


3 To confirm the quantity of packaging, avoid mixing, wrong board and packaging damage



Global Quick Turn PCB Limited, high quality quickturn PCB, aluminum substrate PCB manufacturer in Shenzhen, China, producing high quality quick PCB prototype PCB, batch PCB for customers all over the world, best quickturn aluminum core PCB manufacturer, best quickturn PCB prototype, batch quickturn PCB factory.



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