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copper defects

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1 month 5 days ago #2970 by Mr sanjay kumar dhaka
Sir,
we are producing 8mm copper rod (continues properzi)
recently we received a customer complaint regarding defects in copper strip (6.4X2.5 mm)
defective strip showing bubbles shape, after puncher the bubble oxide inclusion found
small oxide in inclusion in fine wire some time coming , but its around 3 to 4 mm bubbles are there.
please help us to know the possible reasons of this types oxide inclusion

please see attached photo
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