RF Soldering & Heating. Simulation, Modeling.
Induction Heating, pyrotechnic devices.
The first step was to find out what the old, satisfactory bit of equipment actually did. While it was possible to see the solder melt and flow as RF heating was applied. We didn't know how hot the explosive end was getting so that we could assess risks and define process parameters.
That led us to try to make an IR (infra-red) temperature measurement, by pointing a pyrometer at the little device. What we found was that the measurement wasn't reliable. Depending on whether the flux ran over the surface, so we got different answers.. emissivity was changed.
I knew that inside this device was a bridge wire, made of a different material from the parts to which it was welded. The terminations were accessible. I did some simple experiments which showed that the dissimilar metals created an accidental thermocouple which could be calibrated. Thus, I had a temperature measurement (as long as the high RF fields didn't fry the electronics of the thermocouple meter). What's more, the thermocouple was exactly where we needed it, right next to the pyrotechnic materials.
Can we explain behaviour?
Will the new source work?
Was it a failure?
If you have a problem or a worry that something may look too easy, then perhaps we can help you get to the bottom of it, before you waste the money. Our approach is essentially to aim to be able to quantify what is going on physically. My approach merges a lot of good old common sense engineering experience with superior analytical skills in simulation and modelling. You can call any time or email. No charge for a quick look, in confidence of course.
|Links in website:
|Invitation. McCann can help if you have a
design or operational problem that needs some technical support that is outside your
team's experience, some quantitative assessment of what is really the cause of the
difficulties, some design alternatives or just a fresh look by an intelligent
If you have a problem with the behaviour of a market sector, plant, process or item of equipment and would like to get a quantitative handle on it to improve yield or optimise performance, then contact me. I'm always ready to give a little time to discuss a new puzzle, in confidence, of course. We'll only worry about fees when there is some defined work. I can be flexible about how I work with you.
Chadds Ford PA
T: 1 302 654-2953 (Land)
M: 1 302 377-1508 (Cell)
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