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Pin Rust and Spot Rust on CRCA Product

Q. These CRCA Coils are getting rusted after ECL Line (Electrolytic Cleaning Line). Not able to observe on this line but after batch annealing pin type rust is observed at Skin Pass Mill.
My concern is that even after Cleaning why this pin type of rust is created on steel sheet?

Ravi Dashottar
Product designer - Karnataka, India
August 14, 2008

Q. We find that after de greasing of CRCA sheet, surface is full of pin rust. Is this a process mistake by CRCA manufacturer? If YES, what and in which process?

SANJEEV

SANJEEV AGARWAL
- LUCKNOW UP INDIA
August 17, 2017

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