What is the role of nickel sealing in nickel plating processing?

In the field of nickel plating processing, nickel sealing is a common surface treatment technique. The process involves covering the nickel plating with a thin layer of nickel to enhance its performance and longevity. So what exactly is nickel sealing? And what does it do?

Nickel sealing, in simple terms, is the deposition of a thin layer of nickel at the end of the entire nickel plating process. This step may seem simple, but it has a significant impact on the final performance of the plated part. First of all, the nickel seal provides a physical barrier to protect the plating from corrosive media. Nickel plating is inherently corrosion-resistant, but in particularly harsh environments, such as high humidity or the presence of corrosive chemicals, the plating can be damaged. Nickel seals increase the difficulty of blocking external corrosion factors by means of an additional nickel layer, thus improving the corrosion resistance of the entire plating.

Nickel sealing also improves the appearance of the plating. Nickel-plated parts usually have a bright metallic luster, and nickel seals make that luster last longer. Plated parts can lose their luster through friction on surfaces, finger touches, etc. during daily use or storage. The protective layer formed by the nickel seal helps minimize the effects of these factors on the appearance of the plating and prolongs the aesthetics of the plating.

Nickel seals also have a positive effect on the wear resistance of the plating. In everyday applications, plated surfaces may be subjected to friction and scratches, and these physical effects can gradually weaken the plating and may even cause it to flake off. The nickel sealing layer is equivalent to a "protective suit" for the plated layer, which improves the resistance of the layer to physical damage.

It is also worth mentioning that nickel sealing optimizes the electromagnetic properties of the plated layer. In some electronic devices, nickel plating is required to provide electromagnetic shielding or to improve electrical conductivity. Since NiSeals ensure the integrity and homogeneity of the plating, they help to maintain and enhance the performance of the plating in these areas.

The nickel seal plays an important role in the nickel plating process. It not only improves the corrosion and wear resistance of the plated layer, but also enhances the appearance and electromagnetic properties of the plated layer. Fine control of the nickel sealing process ensures that the plated parts maintain excellent performance and a long service life in a variety of environments. Therefore, whether in aerospace, automotive or electronics manufacturing, nickel sealing is an indispensable process and a key step in nickel plating to improve product quality.