Acid pickling and descaling is a crucial part of the plating pretreatment process. The main purpose of this step is to remove oxides and rust from the metal surface and provide a clean, active metal surface for the subsequent plating process. However, the mere process of pickling is often accompanied by a potential risk of corrosion to the metal substrate, making the addition of corrosion inhibitors an indispensable measure.
The role of corrosion inhibitors is mainly reflected in the prevention of overcorrosion of the metal matrix and the reduction of hydrogen embrittlement. In the pickling process, if it is not properly controlled and the corrosion time is too long, it will lead to damage to the metal organization, dimensional changes, surface roughness increase and other problems, and may even occur substrate damage and other overcorrosion phenomena. This not only affects the quality of the plating layer, but may also reduce the overall performance of the metal product.
At the same time, the corrosion inhibitor can also make the metal surface chemical changes, the formation of a layer of stable passivation film, to further improve the corrosion resistance of the metal. In addition, by changing the electrochemical properties of the metal surface, the corrosion inhibitor is able to reduce the kinetic rate of the corrosion reaction, further slowing down the corrosion process of the metal. These mechanisms work together to ensure the safety and efficiency of the pickling process.
In fact, not all acid baths require the addition of an extra corrosion inhibitor. For example, Bigely acid salt activator BC-629 is characterized by a mild reaction that does not damage the plated substrate. This activator ensures the integrity of the metal substrate while maintaining the efficiency of the descaling process without the need to add additional corrosion inhibitors. This feature not only reduces production costs, but also simplifies the process and improves productivity.
Why choose Bigely Technology?
Guangdong Bigely Technology Co., Ltd. ,founded in 2003, is a high-tech enterprise integrating R & D，production, sales and service, specializing in the production of electroplating chemicals. As a fast growing electroplating chemicals supplier in China, Bigely Technology is a national high-tech enterprise with a strong research and development team, which has over 10 engineers with more than 20 years' working experience in the electroplating industry.
The core raw materials of our products are made of international brand products such as BASF from Germany with high purity and low impurity. The production process is in strict accordance with the requirements of ISO9001 quality management system to ensure the stability of product quality.
If you need our high-quality electroplating chemicals, please contact us. We can provide you samples to you for test, and also provide a series of services.
