Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


Nonrecurring Cost

#6248

Nonrecurring Cost | 18 September, 2000

What are the non-recurring operating costs of running this machine? How long does it take to program a rework operation, assuming you have CircuitCAM or something like that?

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Erick Russell

#6249

Re: Nonrecurring Cost | 20 September, 2000

The programming is simple and is based on just a few simple parameters. There is no CAD interface required to program the equipment. You must key in the dimensions of the component (X-Y and Thickness) and then specify the required thermal process. Since Photonic soldering uses a non-contact thermal process control. The parameters are actual component surface temperatures (not air temp or flow rates). The computer automatically calculates the laser path. Programming time is less than 3 minutes (One minute to find a set of metric calipers to measure the component).

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#6250

Re: Nonrecurring Cost | 20 September, 2000

How are component temperatures measured with your machine?

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Erick Russell

#6251

Re: Nonrecurring Cost | 21 September, 2000

The temperature is measured with a Pyrometer. It measures the spot that is being heated with the laser. As the surface heats up, the laser power is decreased to stabilize the temperature.

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#6252

Re: Nonrecurring Cost | 21 September, 2000

How does this pyrometer work? How is it attached to / removed from the component?

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Erick Russell

#6253

Re: Nonrecurring Cost | 21 September, 2000

The pyrometer is a non-contact temperature measuring device. It optically measures the surface temperature of the component surface every 10ms.

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Reflow Ovens thermal process improvement

Hioki Flying Probe Tester