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Questions concerning iron and steel, steel making, rod rolling, galvanizing, springs, nails, fencing, and patenting go here.

TOPIC: Preece test for galvanized steel wire

Preece test for galvanized steel wire 2 years 9 months ago #874

Dear All,

I have problem on Preece test( copper sulfate test) for galvanized steel wires. Some wire rods give good results but some of them give bad results. (Some red points on the wire after test according to EN 50189 std.) Do you have any ideas about what affects Preece test?
Best regards

Murat
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Re: Preece test for galvanized steel wire 2 years 9 months ago #875

Check the flux , the zinc ammonium chloride, it is usually the cause of the red appearance on the wire.
when is not the right quality or gets damaged by acid drag from the cleaning baths.

Eduardo Anaya
Senior Consultant
INDEPA S.C.
Mexico City
Tel(011-52)555-407-7451
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