Re: It's Alive!

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Mariss Freimanis
<mariss92705@y...>" <mariss92705@y...> wrote:

> Hi,
>
> For those that asked, I got the Zevatech monster to churn
> out the first panels (12 G201s per panel) today. It's my
> new 14,000 parts hour, 3-head, 3,000 lb pick-and-place SMT
> machine. It goes up against the 150 lb Ursulla, who can
> manage 3,000 parts per hour when she is in a good mood.
>
> Mariss

Cool! I'm curious what your process flow is like. Do you
use vapor phase, IR, etc, for SMT reflow? what about the
bottom side (are there SMT parts on the bottom?)

Where I work, the process for most boards is stencil solder
paste on top, place top side SMT, reflow top side (IR),
then flip, stencil glue on bottom, place bottom SMT, cure
glue (also IR), flip again, place thru-hole, then wave
solder thru-hole and bottom SMT. Some higher density
boards that are 100% SMT get double sided reflow instead
of wave.

I find the whole process amazing, and high speed pick
and place machines are fun to watch. I rarely get to see
it though, since I work in Cleveland OH and my boards
are usually built at a plant north of Mukwaukee WI.

John Kasunich