For the surface treatment workshop, the qualified and stable composition of the plating bath is the prerequisite guarantee of the surface treatment quality of the workpiece. The quality of electroplating can be guaranteed by managing the hard chromium bath well. Liquid composition information is the basis of liquid management, which can be used to effectively maintain and adjust the liquid, so that the components of the liquid have been stable and meet the requirements, laying the foundation for the stable surface treatment quality of the workpiece. The information of tank composition is obtained by chemical analysis, which is often called tank analysis.
In this article, we will share some knowledge about tank analysis.
Steps of tank analysis:
When hard chromium additives are used, the analysis process of electroplating hard chromium bath usually includes the following steps: sampling → preparation of analytical test solution → determination of bath solution → calculation and evaluation of analytical results. In each step of the tank analysis, a small deviation can lead to very different results. Therefore, each step of chemical analysis should be strictly controlled to ensure the accuracy of the obtained data.
Therefore, it is necessary to discuss the basic requirements of tank analysis.
Basic requirements for tank analysis
① Sampling and testing
A representative sample is taken for testing, and the data obtained represents the content of each component in the whole tank. In actual work, 50 ml~100 ml of solution is often mixed evenly from different positions in the tank as the sample to be tested, and the result of the sample analysis and detection represents the composition of thousands of liters of tank liquid.
② Titration analysis
The contents of main salt components (chromic anhydride, sulfuric acid and trivalent chromium) in electroplating hard chromium bath were measured by titration method.
(3) Hall tank test analysis
The content of hard chromium additive in hard chromium plating bath can be obtained through the analysis of Hall bath test.
Conclusion
The above is the basic requirements that need to be paid attention to when the plating factory uses Bigely hard chromium additives for bath analysis. Mastering this set of basic requirements can obtain accurate data to facilitate adjustment of the composition of the bath and troubleshooting.
If you have a need for hard chromium additives or want to learn about the analytical knowledge you need to master when electroplating hard chromium, you are welcome to contact us at any time.
