Hey Peter, it depends on how many board types and what sizes/complexity   
your boards are.  Say if you have a large variety of boards you need to   
run, you may be better off to have a full forced convection oven to cover   
most of your board types.  Vitronics 310 uses pure Infrared (4 top and 3   
bottom zones) which heat is absorbed relative to the inherent physical   
properties of the components.  And due to the length of the oven is   
short, you will have a hard time to control the "time above liquidus"   
less than 60 seconds.

Steven Ng
NCR Canada

 ----------
From:  TechNet-request[SMTP:[log in to unmask]]
Sent:  November 14, 1996 8:47 AM
To:  INTERNET:[log in to unmask]
Subject:  !st reflow oven

We are looking at puchasing a reflow oven for low volume periodic use. We   
need
more throughput than a batch oven, but nothing like a large contract   
house.
        I don't have to be concerned with speed or throughput, but I do   
have
to
be able to provide a repeatable consistent profile to impress my   
customers as
far as quality is concerned.

Two ovens I am looking at used presently are:
        Knight-Line 416 26" preheat, 30" reflow full convection   1yr old

        Vitronics 310  IR 3 top 3 bottom zones
The used equipment dealer says he can sell me the VItronics for the same   
price
 -around $4k canadian as the Knight line. He insists it is a better value.   
I
like
the full convection of the Knight line oven, and also that it is single   
phase
220, as oppose to 3 phase.  I might also use the full convection   
properties of
the Knight for heat shrinking.

        Any comments ?
Peter Roy
Broy Engineering Ltd
Toronto

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