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The causes of defects and countermeasures of the solder paste printing

2015/4/17  人气:115

The causes of defects and countermeasures of the solder paste printing
defects
Cause analysis,
Send countermeasures


Amount of solder paste, printing thick too much
1. The squeegee pressure is too small, more solder paste

The gap is too big, 2. The screen and PCB solder paste amount more
1. Adjust the squeegee pressure

2. Adjust the clearance
Uneven solder paste icicles, steel net
Stencil separation too fast
Adjust the stencil separation speed and demoulding ways