http://ipc-technet.groupsite.com/gallery/14785
This is an impeller off a Vectra. The impeller is less than one year old
and it was purchased as being lead free compatible.
The alloy is SN100C.
These photos were taken at the point of it being replaced.
Serious concern was raised at the inspection 4 months before and steps
were taken to get a replacement.
The degradation during the period taken to get a replacement is very
alarming.
Assays of both bath and dross have not shown concerning levels of iron,
it is a big bath! (I did some rough arithmetic and 0.005% was equal to a
~17mm cube of SS)
The machine is usually operated at 265C.
We are now going to recheck the drain plug!!!!!
Rex
Rex Waygood
Technical Manager
Hansatech EMS provides value manufacturing through engineering and
quality
Hansatech EMS Limited
Benson Road
Nuffield Industrial Estate
Poole
Dorset
BH17 0RY
+44 (0)1202 338200
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