Technical articles on pickling
Author: Walmir Rezende • 07/29/2026
Learn when it makes sense to regenerate spent sulfuric acid from pickling and when disposal with neutralization is the more viable option.
Read MoreWalmir Rezende • 07/29/2026
How the concentration and temperature of a sulfuric acid bath affect mill scale removal on carbon steel, and what shortens the life of the solution.
Read MoreWalmir Rezende • 10/26/2025
Progressive saturation of acid baths is a common problem in foundry pickling. Learn to spot the signs and correct them in time to avoid production losses.
Read MoreWalmir Rezende • 10/26/2025
Improper disposal of acidic pickling wastewater is a common cause of environmental fines at foundries. See the neutralization protocol that meets CONAMA 430.
Read MoreWalmir Rezende • 10/25/2025
Choosing the right pickling acid affects efficiency, costs and part quality in foundries. Compare hydrochloric and sulfuric acid and see which to choose.
Read MoreWalmir Rezende • 10/24/2025
Uncontrolled pH swings in pickling lead to rejected carbon steel parts. See the 5 key factors for keeping the process stable in foundries.
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