Acid pickling corrosion inhibitor BTA, also known as benzyl triamino acid, is a commonly used metal pickling corrosion inhibitor. Here is the usage of BTA:
Pre treatment: Before acid pickling, the metal surface needs to be pre treated. Firstly, clean the metal surface to remove impurities such as grease, dirt, and oxides. Alkaline cleaning agents or solvents can be used for cleaning to ensure a clean metal surface.
Preparation of solution: Add an appropriate amount of BTA to water and stir thoroughly until BTA is completely dissolved. It is usually recommended to control the concentration of BTA between 1% and 5% depending on the specific situation.
Pickling operation: Soak the metal parts in BTA solution to ensure that the metal parts are completely covered. Pickling operations can be carried out by soaking, spraying, or brushing. The pickling time is generally 15 minutes to several hours, and the specific time can be adjusted according to the type of metal and corrosion situation.
Wash: After pickling, rinse the pickling agent thoroughly with clean water. Ensure that all BTA solutions and impurities are rinsed clean.
Neutralization treatment: In order to neutralize the remaining acidic substances after pickling, an appropriate amount of alkaline solution can be used for neutralization treatment. Common neutralizing agents include sodium hydroxide (NaOH) or sodium bicarbonate (NaHCO3). During the neutralization process, it is necessary to control the pH value of the solution to approach neutrality.
Drying protection: The metal surface after pickling is prone to re oxidation, so drying and protection are necessary. Protection can be achieved by using methods such as drying, hot air drying, or spraying rust inhibitors.
It should be noted that when using BTA for pickling, relevant safety operating procedures should be followed, and personal protective equipment such as protective gloves, glasses, and protective clothing should be worn. In addition, ensure good ventilation in the pickling operation area, and comply with relevant regulations and standards when storing and handling chemicals.