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Underfill machine maintenance

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Eric C

#37705

Underfill machine maintenance | 8 November, 2005

I am trying to find out if there is any solvent for underfill material that has hardened/cured. Regular/routine maintenance of our dispenser units requires thorough cleaning oftentimes scraping is done for material that has hardened. Any inputs would be appreciated.

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RDR

#37708

Underfill machine maintenance | 8 November, 2005

What does the Mfgr. of the compound say? It is hard for anyone to help you unless you tell us what you are using.

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Erik

#37718

Underfill machine maintenance | 8 November, 2005

I've found that Zestron HC works very well for breaking down all SMT adhesives. That's what our machine manf. recommends.

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#37726

Underfill machine maintenance | 8 November, 2005

Necessary tools are: * Chisel * Ball peen hammer

After you buy two new nozzles, keep one in a baby food jar filled with your underfill suppliers recommended solvent for half the shift. At the break, swap the dirty nozzle on the machine with the clean nozzle in the jar and put the dirty nozzle in the jar. [Some would argue that tossing the dirty nozzle in an ultrasonic cleaner with your underfill suppliers recommended solvent is preferred over the baby food jar.]

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Eric C

#37815

Underfill machine maintenance | 11 November, 2005

Thanks for all your inputs. As I read through your responses, and through my research on the web, I have learned there are so many options to try and evaluate.

The material we are using is loctite FP4531 - a snap cure flip chip underfill. Loctite has not responded to my inquiry yet.

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#37832

Underfill machine maintenance | 12 November, 2005

Eric C: What have you found?

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