Chromium plating brightening agent and preparation method thereof

Abstract

The invention relates to a chromium plating brightening agent and a preparation method thereof. The chromium plating brightening agent mainly consists of chromium sulfate, chromium hydroxide, chromic acetate, malic acid, acetic acid, lactic acid, zinc sulfate, sodium dodecyl sulfate, copper sulfate and the like. The chromium plating brightening agent has the characteristics that plating solution has a stable structure, a plating layer has good bonding force, the plating layer has excellent corrosivity; the plating surface has high hardness, the brightening agent has a small using amount, and the like.

Description

technical field [0001] The invention relates to a chrome-plating brightener and a preparation method thereof, belonging to the field of electrochemical surface protection. Background technique [0002] Since the chemical plating process was industrialized in the 20th century, it has become the focus of research and development in the field of metal and non-metal surface material coating due to its good corrosion resistance, wear resistance, and uniform thickness. [0003] At present, we often encounter that many brighteners have good performance when the tank is just opened, the quality of the plating solution is running normally, and the quality of the coating is stable, but after a period of use, the quality of the coating declines, no matter how you add, add, Adjust the plating solution, but they can’t reach a good state. This is caused by the improper formulation of the brightener itself and the imbalance of components in the brightener. As we all know, various brightene...

AI Technical Summary

Problems solved by technology

[0003] At present, we often encounter that many brighteners have good performance when the tank is just opened, the quality of the plating solution is running normally, and the quality of the coating is stable, but after a period of use, the quality of the coating declines, no matter how you add, add, Adjust the plating solution, but they can’t reach a good state. This is caused by the improper formulation of the brightener itself and the imbalance of components in the brightener. As we all know, various brighteners are solutions composed of various intermediates. The relative ratio of each component is one of the most important parameters. In the electroplating process, the various components of the brightener are not consumed equally. Due to synergistic effects and other factors, the consumption will be carried out according to the proportion designed by the formula. Therefore, in During the electroplating process, although the brightener is continuously consumed and supplemented, the designed formula is not reasonable. After a period of time, some intermediate components in the plating tank will be seriously excessive, resulting in a proportional imbalance and organic pollution. , the other components appear to be insufficient, at this time the brightener in the plating solution will have a component ratio imbalance, and adding brightener will not help it, but will worsen it.