The selectron process, colloquially known as tampon plating, is a special galvanic process by which layers are partially deposited. Selectron is particularly suitable for repairing minor damages to specific areas.
The optimal repair procedure for small damages
Selectron is a repair process for repairing surfaces. The electrochemical application of metal allows surfaces to be partially coated. Small damage such as pores or partial imperfections and wear points are systematically sealed using the Selectron process. After the Selectron process, the component has a smooth and sealed surface once more.
For larger imperfections, there is also the possibility of spot welding, which we can also offer you. In the case of severe signs of wear, we recommend a repair hard chrome plating of the entire component instead of partial repair. Learn more about the procedure and advantages of Regeneration here.
Damage before the selectron process:
Sealed surface after the selectron process:
How the selectron method works
Graphite anodes are used for the Selectron process/tampon plating. These are wrapped with cotton wool and soaked in an electrolyte. The anode is connected to a rectifier and switched positive. The component to be coated represents the cathode and is switched negative. Finally, the anode soaked in the electrolyte is used to systematically seal the partial imperfection on the component. The process of tampon plating consists of pre-treatment (cleaning), activation (pickling) and metal deposition. The deposited metallic material is ground and levelled in the end.
Depending on the surface, various metallic electrolytes are suitable for filling the imperfections. In most cases copper electrolytes are used. However, nickel and cobalt electrolytes are also used to seal small pores.
The size of the components is of secondary importance for the Selectron process and must be checked individually for feasibility. In principle, the Selectron repair process can be carried out as a mobile electroplating process directly on site. If desired, we would request our trusted cooperation partner for this option.
Tips for the delivery of your components
The delivery condition of the components is one of the decisive factors for optimum coating quality and a short throughput time. Here you will find helpful tips for the delivery of your components.
Betz-Chrom – your partner for strong parts
In the spirit of a trustful partnership, you will receive highly qualified technical advice from us that is tailored to your needs. We combine over 65 years of experience in surface technology with an innovative and inquisitive corporate culture. Our quality awareness and our commitment to the environment is TÜV-approved and certified according to DIN EN ISO 9001:2015 as well as DIN EN ISO 50001: 2018 and DIN EN ISO 14001:2015. As an on-schedule partner with high quality standards, we constantly aim to find the optimal process solution for you.
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