Back to the line
Paste printing
Most solder defects start at the printer. The station records which paste and which stencil printed each board, and how the paste inspection judged the result.
Where the data comes from
- Stencil and squeegee
- The stencil ID and its cleaning history, for every print.
- Paste cartridge
- The paste lot is scanned when it is loaded, and its open time starts counting.
- Operator screen
- Shows the paste life left and the last inspection result.
What we record at SP-1
Example values from the demo board KRZ-0917-00042. The source says where each fact comes from: the machine itself, a scan, an operator or the MES.
| Fact | Example | Source |
|---|---|---|
| Paste lot | SP-2291 | Scanner |
| Time out of the fridge | 3 h 12 min | MES |
| Stencil | ST-118, 120 µm | Scanner |
| Last stencil cleaning | Before the shift, by Operator 118 | Operator |
| Fact | Example | Source |
|---|---|---|
| Result | Passed | Machine |
| Paste volume | 98 % | Machine |
| Worst pad | U3 pin 12, 81 % | Machine |
Checks at this station
Rules the station applies before a board moves on. Which ones run on your line is agreed with production and quality.
- Paste in order
- Paste is used first in, first out, and every container’s warm-up and time out of the fridge are on record.
- The stencil for this product
- The stencil is scanned when the work order starts and checked against the tooling approved for the product.
- A failed SPI stays here
- With a blocking rule set, a board that fails paste inspection is held at the transfer by the SMEMA adapter.
In the manufacturing record
This is the line the station adds to the record of the board, the same record that follows it through the whole line.
See it on the lineManufacturing record
KRZ-CTRL-01 demo board
Solder pasteSP-1
Lot SP-2291