SURFACE REFINEMENT

functional coatings for metal surfaces

With our coating processes electroless nickel, hard chrome and selectron we extend the technical properties of workpieces and protect them against corrosion and abrasion. We also use our know-how to coat parts with complex geometries or large dimensions. Surface refinement guarantees the functional reliability of components and extends their service life.

Our coating processes

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Electroless Nickel

For hardness, wear resistance and very high corrosion protection with even coating thickness distribution.

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Hard Chrome

For corrosion protection, tribological properties and particularly high wear resistance to mechanical stress.

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Selectron

The partial repair prodcedure for repairing spots with minor damage such as pores, imperfections or partial wear.

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Hybrid coating hard chrome and electroless nickel

In the case of hybrid coating, components are first electroless nickel-plated and then subsequently hard chrome-plated. In doing so, all the advantages of hard chrome and electroless nickel are being combined in one shift system. The combination layer guarantees very good wear protection in conjunction with high corrosion protection and is ideally suited for use in an environment with high chemical and mechanical stress.

Regeneration of worn components

The new production of a worn component is often expensive and time-consuming, especially due to machine downtime. The high-quality and time-saving regeneration of components is the optimal alternative to an expensive new acquisition. The worn components are restored to their original dimensions by means of pre-grinding, excess hard chrome plating and finish grinding including Superfinishing. In the case of minor damage, smaller spots can be repaired by using tampon electroplating (Selectron).

Thermal post-treatment

In hard chromium plating, tempering or low-hydrogen annealing is used as a preventive measure with regard to the resistance of high-strength steel components to hydrogen-induced brittle fracture following DIN 50969. Right after the chrome plating, the components are tempered in a furnace at between 120°C – 210°C to remove the hydrogen absorbed by the material during the coating process.

In electroless nickel-plated components, the hardness and coating adhesion of the nickel-phosphorus alloy can be increased by thermal post-treatment. For this purpose, the components are tempered in a furnace between 230°C – 400°C after the electroless nickel plating.

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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