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Ultra CEMS introduce Selective Soldering

(November 21st 2005)

In order to further enhance our manufacturing capabilities, Ultra CEMS has recently purchased two EBSO SPA400 programmable selective soldering machines.

Mike Clements, Senior Process Engineer at Ultra CEMS commented, "This will give us the facility to automate the soldering of leaded components, especially on the more complex, double-sided surface mount assemblies where the use of traditional wave or hand soldering is no longer a viable option.

The accuracy and repeatability of the equipment will also lead to cost savings for our customers, process improvements and enhanced quality of through-hole soldered joints.

With the two machines and an additional quick change-over solder pot, we now have the capabilities to selective solder using a variety of solder alloys".

The mechanics of how this operation is performed is outlined below.

The Robotic PCB support fixture on the machine is programmed to move the board in an 'X', 'Y' & 'Z' direction, precisely positioning the board over the fluxing nozzle & and fixed soldering nozzle.

Molten solder is pumped upwards through a fountain shaped nozzle to the soldering joint. Soldering is enhanced by a heated nitrogen curtain which provides an inert atmosphere during the soldering process eliminating oxidisation.

For further information about how we could help you with this important issue, please contact John Dean at jdean@ultra.co.uk

© Ultra CEMS 2004

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