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Date: | Sun, 2 Nov 2008 14:48:26 -0600 |
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The size of the solder pot depends on your needs. I've used all the machines
listed and each of the small ones are good for tinning or soldering small parts
and if all you need to do is one small part at a time. The Air-vac PCBRM fits
the needs of a lot of people. You may have to put your boards in a baking
oven to heat up a thick board or preheat any adjacent SMT parts that you've
masked to prevent thermal shock. These machines are good for connectors up
to approximately 2" and not for power bricks.
The next size machine with the most versatily is the M93 or Concept IV
Wenesco. These have a long solder pot with 150 lbs of solder. You can do
connectors about 8" long, power modules, or plug in several nozzles to do the
same location on 2-up panels at the same time. The floor unit is rugged and
has a bottom preheater and often a top preheater and laser pointer.
For the money you can't go wrong. The newest Concept IV adds more space
between the heater and the nozzle/solder pot area than the M93. Cost is
around $25K. Brian Lowe, owner will use a PB-free pot and impellar with
nitrogen to inert the under the solder nest plate to virtually eliminate the
maintenace of pulling out the pump. There are several for sale that I know of.
Benchmark Electronics, Hudson NH has an M93 top & bottom IR preheat with
all the nozzles for under $500. It was in perfect shape when I was there. The
other is now at NEA Londonerry was good now needs cleanig up since another
company left in a storage truck and let it get rusty.
Another solution for assembly repair is to get a Premier Tool Works machine.
They make a rugged machine with convection preheater with a long solder pot
and slide rail conveyor for around $75K.
- For strickly selective assembly you can buy an automated Selective solder
system for $65K. These machines can be either tin/lead or Lead Free by
buying the 2nd interchangeable solder pot, no tools needed to change over.
- Ace Kiss #102, RPS same thing stepper motor moving a 30lb solder pot with
fluxer about $65K. The new Seho with Fiducial recognition for $77K loaded
closed loop servos.
The Vitronic MySelective Stratham NH, has a series from the single Selective
Solder $95K, fluxer closed loop servo, fiducial recognition & options. They one
pot $95K, to a small multi-wave pot for low mix/high volume, to the larger
units with Selective 1 or 2 pots or 1 selective and 1 multiwave pot, $360K.
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