Used to deal with this in a past life. You don't want to alienate
anyone on the line, but also can't have people crying wolf all the
time. Much of what you do is transparent to the line, you are dealing
with issues on multiple levels, but they don't always see immediate
results. You have to get the line's buy-in, your professional opinion
alone is not enough because they don't have all the facts to know if
you know what you're doing. So prove it.
I'd suggest having all pcbs with insuffficient solder (make sure they
indicate where somehow) placed aside for review by the operators,
engineering, QC, supervision, etc. Call a meeting for everyone to
inspect visually. Later, you may have to back up with data from pull
tests, measurements, six sigma, but if you can get a majority to agree
with what you're saying, that should settle the matter, and your
opinion will be worth much more.
Also, keep in mind that there might actually be areas of insufficient
solder caused by other process problems- poor stencil cleaning, not
watching paste levels, pcb support during printing, exposure time to
air, humidity, flux, reflow profiles, etc. It is easy to doubt an
operator, especially if they are whiny, have an attitude, worship
Rosie O', or need something to do, but also many times they are right.
We can miss that because we are so busy with bigger issues sometimes.
Ask them to help you improve the issue by providing examples, and not
just touching things up immediately. If the issue is sporadic, or
varies all over, see your printing process and operator. If its a
specific area over and over again, check your stencil. Sometimes, its
actually a bent lead issue, still soldered, but it looks
"insufficient". Rule out nothing and communicate everything.
You are the support person, that means that you are ultimately
responsible for how things are handled and what the dynamic is between
the line and support. The better the dynamic, the better the product.
Everyone wants to do the right thing, we just sometimes disagree over
what it is.
Good luck! BC
On 6/8/07, Ron Peeler <[log in to unmask]> wrote:
> I'll get some
>
> Ronald D. Peeler Jr., B.S. IE
> Process Engineer
> SWEMCO
> Moorestown, NJ 08057
> Tel: (856).222.9900 ext. 31
> Cel: (484).948.0779
> Fax: (856).222.0700
> [log in to unmask]
>
>
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]]On Behalf Of Hfjord
> Sent: Friday, June 08, 2007 3:29 PM
> To: [log in to unmask]
> Subject: [TN] SV: [TN] SV: [TN] Insufficient Solder
>
>
> Pictures, please.
> Inge
>
> -----Ursprungligt meddelande-----
> Från: Ron Peeler [mailto:[log in to unmask]]
> Skickat: den 8 juni 2007 19:56
> Till: TechNet E-Mail Forum; Hfjord
> Ämne: RE: [TN] SV: [TN] Insufficient Solder
>
> Flux is an area we havent explored. I guess it would have been but the
> calls that are being made are more of asthetics then function. Most of
> are insuffiient calls are b/c the joint doesn't look perfect and I mean
> perfect. It is a real pain in my butt. I do not want to discourage
> inspection but I do not want insufficient solder to be my #1 defect. I
> have other fires to fight. It is a fine line between happiness and
> insanity.
>
> Ronald D. Peeler Jr., B.S. IE
> Process Engineer
> SWEMCO
> Moorestown, NJ 08057
> Tel: (856).222.9900 ext. 31
> Cel: (484).948.0779
> Fax: (856).222.0700
> [log in to unmask]
>
>
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]]On Behalf Of Hfjord
> Sent: Friday, June 08, 2007 1:14 PM
> To: [log in to unmask]
> Subject: [TN] SV: [TN] Insufficient Solder
>
>
> Flux! Key to many problems.
> Inge
>
> -----Ursprungligt meddelande-----
> Från: TechNet [mailto:[log in to unmask]] För Ron Peeler
> Skickat: den 8 juni 2007 16:57
> Till: [log in to unmask]
> Ämne: [TN] Insufficient Solder
>
> Here is an age old question. Does anyone here have a sure fire way to
> combat insufficient solder. I have tried all teh tecniques from what I
> know of. These consist of changing stencil thicknesses, changing
> pastes, re-training ops to IPC-610-D. I am at a lost. It seems that
> each operator sees insufficient solder differently and it is almost an
> excuse from them to keep busy and make added "touch up." I am almost
> ready to through the category out the door b/c it is so subjective adn
> people are so fickle.
>
> Any ideas out there?
>
> Ronald D. Peeler Jr., B.S. IE
> Process Engineer
> SWEMCO
> Moorestown, NJ 08057
> Tel: (856).222.9900 ext. 31
> Cel: (484).948.0779
> Fax: (856).222.0700
> [log in to unmask]
>
>
>
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