happokylpyyn
Happokylpyyn, often translated as "acid bath," is a term that generally refers to the process of using acidic solutions for cleaning or treating various materials, particularly metals. In industrial contexts, it is a crucial step in metal surface preparation. For example, before galvanizing, plating, or painting, metal surfaces must be thoroughly cleaned to remove rust, scale, and other impurities. Acidic solutions, typically based on hydrochloric or sulfuric acid, are effective at dissolving these contaminants. This process is also known as pickling.
The specific type of acid and concentration used depends on the metal being treated and the nature