This is is an outline presentation on the PCB printing process. It is geared towards students or new employees who do not have any experience in the PCB assembly arena.
2. Your BEST choice in Solder Rework/Repair, Solder Training & Soldering Tools
Paste Printing
Load
Align
Squeegee
Blades
Enclosed Head Technology
Inspect / Paste problems
3. Your BEST choice in Solder Rework/Repair, Solder Training & Soldering Tools
Load / Align
Manual
Automated
Paste Printing
4. Your BEST choice in Solder Rework/Repair, Solder Training & Soldering Tools
Load
Manual
Automated
Paste Printing
PCB
Camera
5. Your BEST choice in Solder Rework/Repair, Solder Training & Soldering Tools
Squeegee
Metal
Polyurethane / rubber
Rolls paste across apertures
30O
-60O
angle of attack
Paste Printing
6. Your BEST choice in Solder Rework/Repair, Solder Training & Soldering Tools
Squeegee
Metal
Stainless
Nickel alloy
Paste Printing
7. Your BEST choice in Solder Rework/Repair, Solder Training & Soldering Tools
Squeegee
Metal
Polyurethane / rubber
Rolls paste across apertures
30O
-60O
angle of attack
Paste Printing
8. Your BEST choice in Solder Rework/Repair, Solder Training & Soldering Tools
Squeegee
Metal
Polyurethane / rubber
Rolls paste across apertures
30O
-60O
angle of attack
Paste Printing
9. Your BEST choice in Solder Rework/Repair, Solder Training & Soldering Tools
Stencil
PCB
Paste Printing
10. Your BEST choice in Solder Rework/Repair, Solder Training & Soldering Tools
Paste Printing
Squeegee
Speed
.2 – 8 in/ sec
Pressure
.7 – 1.5 lbs
Faster = higher
11. Your BEST choice in Solder Rework/Repair, Solder Training & Soldering Tools
Separation
Separation distance
Very slow
To transport height
Quick
Paste Printing
12. Your BEST choice in Solder Rework/Repair, Solder Training & Soldering Tools
Separation
Separation distance
Far enough for “Snap off”
Very slow (.01”/sec)
Paste Printing
13. Your BEST choice in Solder Rework/Repair, Solder Training & Soldering Tools
Separation
Separation distance
Too fast
Leaves paste
Paste Printing
14. Your BEST choice in Solder Rework/Repair, Solder Training & Soldering Tools
Paste Inspection / Problems
Good Solder
Paste Printing
15. Your BEST choice in Solder Rework/Repair, Solder Training & Soldering Tools
Paste Inspection / Problems
Slump
Too much heat
Paste too thin
(Low viscosity)
Paste Printing
16. Your BEST choice in Solder Rework/Repair, Solder Training & Soldering Tools
Paste Inspection / Problems
Dog Ears
Snap off too fast
Squeegee too fast
Paste Printing
17. Your BEST choice in Solder Rework/Repair, Solder Training & Soldering Tools
Paste Inspection / Problems
Bleed out
Pressure too high
Poor gasket
Paste Printing
18. Your BEST choice in Solder Rework/Repair, Solder Training & Soldering Tools
Paste Inspection / Problems
Scooping
Damaged squeegee
Too much pressure
Paste Printing
19. Your BEST choice in Solder Rework/Repair, Solder Training & Soldering Tools
Paste Inspection / Problems
Torn prints
Snapoff too fast
Clogged stencil
Paste Printing
20. Your BEST choice in Solder Rework/Repair, Solder Training & Soldering Tools
Paste Inspection / Problems
Paste left on Screen
Damaged squeegee
Pressure too low
Speed too high
Paste Printing