Onion Skin in Primary Process
Onion Skin in Primary Process
(OP)
Has anyone come against a problem called onion skin, aka kish? This problem is a formation of a difficult to pickle scale on primary steel.
Let me know if anyone has heard or solved this problem.
Let me know if anyone has heard or solved this problem.





RE: Onion Skin in Primary Process
and How good is your blasting prior to pickle?
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Rust never sleeps
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RE: Onion Skin in Primary Process
Hot Process - CSP caster into a 7 stand rolling mill. Approximatley 1600 finishing temp and 1190 coiling.
No processing prior to pickling; no scale breaker at pickle line either.
RE: Onion Skin in Primary Process
You have patches of tight scale. You may need to blast or break to get rid of them.
= = = = = = = = = = = = = = = = = = = =
Rust never sleeps
Neither should your protection
http://www.trent-tube.com/contact/Tech_Assist.cfm
RE: Onion Skin in Primary Process
= = = = = = = = = = = = = = = = = = = =
Rust never sleeps
Neither should your protection
http://www.trent-tube.com/contact/Tech_Assist.cfm