Stainless Steel Pickling
See Photos of Metal Pickling
steel pickling is the most common pickling process used at Delstar's
Delstar has some of the largest stainless steel pickling tanks in North
America. In tank or out of tank, Delstar can get the job done. We can
pickle any part that can be transported to our facility. Our “out
of tank” stainless steel pickling capabilities are second to none found anywhere
in the world. Our unique capabilities allow us to process extremely large
parts that most other companies would not even consider.
The pickling process is used to remove a thin layer of metal off of the stainless steel part. This is different from the descaling process, which removes visibly thick oxide scale from the stainless steel part. Our pickling solutions for stainless steel are mixtures of nitric acid and hydrofluoric acid. Corrosion on the contacted part can occur if the process is not done by a pickling specialist. To match our state of the art facility, Delstar has some of the top pickling specialists in the country.
The most common application for stainless steel pickling is “pickle/passivate”
by Delstar. This is our “one-step” process which removes heat
tint and weld scale while simultaneously passivating the surface of the
parts being processed. Most of our new customers are surprised to find
out that stainless steel pickling also accomplishes passivation. However, where required
by our customers, Delstar will pickle and passivate in two complete and
separate steps. In summary, Pickling passivates, Passivating passivates
and Electropolishing passivates.
The next most common application for stainless steel pickling is as a
surface pre-treatment step prior to electropolishing. When a part has
heat tint and weld scale, Delstar recommends pickling prior to electropolishing
to achieve the best results.
Stainless Steel Pickling Standard in use at Delstar:
- ASTM A 380, Standard Practice for Cleaning, Descaling, and Passivation
of Stainless Steel Parts, Equipment and Systems
Contact us for your stainless steel pickling needs.
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or call us today at (713) 849-2090