I guess you mean 'relax' not 'cure'. Many cooled-down compounds create
built-in tensions, which are either locked or released somehow. Solders
change slowly by time in this meaning as these tensions minimize. Is
called relaxing. Also humans often have built-in tensions and need to
relax, but that was quite another matter..../Ingemar



> Hi all out there,
>
> What is the average period for a solder joint (reflow and wave) to
'cure'? I
> also state that I don't quite know what cure means in this instant -
but the
> general problem we have is the minimum period (if there is such a
thing!)
> required for a solder joint to cure before introducing it to ICT under
> reasonable conditions of stability.
>
> Our test guys are complaining that the assemblies reach there machines
too
> late (hours later), resulting in hardened flux which the test pins
have
> difficulty in penetrating, causing damaged pins, retesting and hence
> unnecessary wear of the test fixtures and reduction in throughput.
> Introducing the assemblies too early while the joints are still in
> 'transition' may also result in retesting (true or false?).
>
> As you may have guessed, we don't clean boards as a norm however, this
may
> be the way to go in future as will be experimenting with a cleaner
shortly.
>
> Cheers
> Grant
>
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