US2020270719A1PendingUtilityA1
Reduction and removal of process oxides on stainless steel
Est. expiryFeb 21, 2039(~12.6 yrs left)· nominal 20-yr term from priority
C23C 18/1216C23C 18/08C21D 8/0273B21B 45/04C21D 9/52C23C 30/00B21B 3/02C21D 9/00C21D 6/004C21D 6/002C21D 3/02B08B 1/12
51
PatentIndex Score
0
Cited by
0
References
0
Claims
Abstract
Oxides formed during annealing of stainless steel strip are removed with abrasive brushes, in lieu of acid or molten salt based pickling. In some embodiments, the stainless steel strip is treated with a rare earth element or a related transition metal before annealing, and then brushed after annealing to remove any oxides. The selection of brushes can impart a finished appearance to conventionally polished stainless steel.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . A process for removing oxides from annealed stainless steel comprising the steps of
a. Providing a stainless steel strip having at least one surface, b. Annealing said stainless steel strip, c. Removing oxides formed during said annealing step by brushing said at least one surface.
2 . The process of claim 1 further comprising the step of applying a rare earth metal or related transition metal to said at least one surface before the annealing step.
3 . The process of claim 1 further comprising the step of employing a finishing roll after the brushing operation that imparts an appearance similar to polished stainless steel.Join the waitlist — get patent alerts
Track US2020270719A1 — get alerts on status changes and closely related new filings.
We store only your email — no account needed. See our privacy policy.