SMT Process : Reflow Oven

Reflow Oven :

A machine that acts as oven to complete the soldering process of components on surface of PCB by passing it through various hot zones reach 10 which are controllable

 Points Of Management :

Making temperature profile according to the standard showing in picture to assure a high quality soldering process

Defects :

Cold Solder  Due To Sufficient Temperature 

Solder Balls Due to Wrong temperature profile

Video :

SMT Process: M-AOI

Mounting Automatic Optical Inspection:

Inspection Stage after adding components to the PCB that inspect the location and condition of each component by taking picture of it and compare it to a reference using a CCD camera

 Defects to inspect:

• Missing Component
• Wrong polarity
• Tombstone 
• twisted component
• wrong part number

Video:

Mounter Machine:

Flexible Chip Mounter:

A Machine that fix big SMT components such as (SOP,QFP,BGA)

Points Of Management:

• Components mount position (X,Y)
• Component Pick up Position
• Components drop rate
• Nozzles cleaning
• Feeder accuracy

Defects & Errors:

• Wrong Polarity
• Shifted
• Up-Side-Down
• Wrong component