Acid pickling corrosion inhibitor is a chemical product used for metal surface treatment, mainly used to remove oxides, rust, and other harmful substances from metal surfaces, in order to provide a clean, smooth, and corrosion-resistant metal surface. The following is an analysis of a common pickling corrosion inhibitor formula:
Main ingredients:
Acidic components: Generally, concentrated sulfuric acid (H2SO4), hydrochloric acid (HCl), or phosphoric acid (H3PO4) are used as the main acidic components. These acidic components can effectively dissolve oxides and rust on metal surfaces.
Corrosion inhibitor: In order to reduce the corrosion of metals during the pickling process, corrosion inhibitors HEDP are often added to the formula. Common corrosion inhibitors include nitrite, nitrate, phosphate, etc. Corrosion inhibitors can form a protective film to reduce the corrosion rate of acidic solutions on metals.
Other auxiliary components:
Surfactants: such as anionic surfactants such as sodium dodecylbenzenesulfonate (SDBS), sulfonated polyacrylamide, etc. These surfactants can improve the wettability and dispersibility of pickling solutions, and improve cleaning efficiency.
Additives: such as color protectors, stabilizers, etc. Color protectors can reduce oxidation and discoloration of metal surfaces; Stabilizers can stabilize the performance and pH value of pickling solutions.
It should be noted that different metal materials and specific application requirements may require different formulations of acid pickling corrosion inhibitors. When using acid pickling corrosion inhibitors, please follow relevant safety operating procedures and pay attention to protective measures to ensure personal safety and environmental protection. In addition, the treatment of pickling wastewater also needs to comply with local environmental regulations and standards.