Some customer inquired that how many hours of neutral salt spray test can the passivated workpiece reach during the production process using electroplated colored zinc passivator.
Bigely Technology analyzes according to the field experience and the characteristics of the product colored zinc passivator BZ-208, there are mainly the following four cases:
1, the workpiece material is different, salt spray resistance performance is different. Different materials of the workpiece, galvanized passivation after the performance of the film is not the same, such as 5μm after the NdFeB workpiece of galvanized passivation after neutral hydrochloric acid test can only be 12-24 hours, the same thickness of the Huashi, T iron workpiece salt spray time of 48-72 hours, and automotive parts of the salt spray time can be reached more than 96 hours.
2. Different galvanizing processes have different salt spray resistance. Generally the same workpiece, the same thickness of galvanized layer, acid zinc process salt spray resistance than alkaline zinc process is a little worse. For example, for the same thickness of automobile parts, the workpiece can barely pass the 72-hour neutral salt spray test after acid zinc plating, while the alkaline zinc process can reach more than 96 hours of salt spray test.
3, the use of different colored zinc passivator, the workpiece salt spray resistance is different. Such as some colored zinc passivator on the market due to the immaturity of the formula or raw material impurity and other issues, resulting in the workpiece passivation failed to obtain a dense crystalline, good adhesion passivation film, thus affecting the passivation film salt spray resistance. This colored zinc passivator BZ-208 can obtain bright and uniform, good bonding force, not easy to lose color discoloration of the color passivate film, the workpiece salt spray resistance performance is good, can pass more than 96 hours of neutral salt spray test.
4, the correct maintenance management, workpiece salt spray resistance better performance. Some customers in the production process due to the various processes of maintenance and management work is not in place, such as not timely replacement of cleaning water, passivation solution does not have a regular aging update, etc., so that the original can pass more than 96 hours of salt spray test workpiece even 72 hours can not reach, or even 48 hours can not be passed. Therefore, the correct maintenance management of each process to ensure that the workpiece has a better salt spray resistance.
Therefore, the salt spray resistance of workpieces is not the same for different workpieces, using different galvanizing processes and passivators, but one thing is that the salt spray resistance of workpieces can reach more than 96 hours with the use of Bigely electroplated colored zinc passivator BZ-208. If you are interested in electroplating colored zinc passivator, please contact Bigely customer service for free samples and detailed technical information!
