Strip Steel Refinement

Finishing for special applications

Steel strip plating

We can now refine our proven range of cold-rolled strip in a variety of grades, dimensions and surface finishes in even more diverse ways and with the highest precision. This is now also possible using supplied punched strip.

Strip finishing is an important process in the metal industry that aims to improve the surface of metal strips using various processes. These processes increase, for example, corrosion resistance, electrical conductivity or the aesthetic appearance of the metals. The most common methods of strip finishing include galvanising and tinning, however we also provide copper plating and nickel plating. Our specialised processes, such as selective finishing and multi-plating, meet very specific requirements.

Find out more about these products and our many years of expertise in the field of cold rolling.

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For our customers

 Zinc, tin , copper and nickel plating. Techniques and advantages.

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Selective finishing

Targeted coating of specific areas for greater functionality.

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Multi-plating

Discover the advantages of combining different coatings.

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For our customers

Quality for a wide range of applications

We are not satisfied until our customers are satisfied!

We guarantee the best possible quality of our products for our customers. Using processes such as galvanising, tinning, copper plating and nickel plating, we turn strip steel into specialist products for a wide range of applications.

Galvanising (Zinc plating) is a process for coating steel with a thin layer of zinc. This is mainly done to increase the corrosion resistance of the steel. We specialise in electrogalvanising, where the steel strip is coated using electrolytic processes. Technically speaking, zinc ions are deposited on the steel surface, giving a particularly uniform and controlled coating. This is particularly suitable for applications where a precise coating thickness is required.  

Tin plating is a process in which a thin layer of tin is applied to the surface of metal strips. This process is also used to increase the corrosion resistance of the steel, but not only, as it also improves the solderability of the metal. Tin coatings are particularly important in the electrical industry, where they are used for the manufacture of printed circuit boards and other electrical components. 

Copper plating involves applying a thin layer of copper to the surface of our steel strip. Galvanic copper plating, too, is an electrochemical process in which copper ions are very evenly deposited on the metal surface. The electrical engineering industry is also an important customer of ours here.

And finally nickel plating. When nickel is deposited on a metal surface using electrochemical processes, the surface later offers excellent corrosion resistance. As a result, these products are often used in the electical engineering industry.

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Post-treatments

We always want to be one step ahead. That's why we adapt our product portfolio and our service to current market developments. In addition to phosphating and chemical passivation as well as the combination of both processes, we offer three special features for the post-treatment of galvanised steel strip.

  • Blue passivation: With this process we provide the galvanised steel strip with increased corrosion protection against white rust. For this purpose, the material is subjected to a salt spray test for up to 6 hours.
     
  • C 27 is our special post-treatment with enhanced corrosion protection against white rust. Here the salt spray test lasts a full 72 hours.
     
  • The addition of bright galvanising reduces abrasion in tools during punching and forming and improves the appearance of the end products.

Post-treatment of Zink

  • Phosphating
  • Chemical passivation
  • Phosphated chemical passivation
  • Blue passivation / blue chromation
  • Bright galvanisation
  • C 72

We are certified

We are certified in accordance with the strict specifications laid out by systems for quality and occupational safety management. Our certificates are available for you to download here:

KI_Group_ISO_9001_ENKI_CR_16949_ENKI_Group_ISO_14001_ENKI_Group_ISO_45001_ENKI_Group_ISO_50001_EN

You can find all of our group’s certificates here.

Selective finishing

One steel strip - multiple areas

We can offer you new application possibilities.

With the selective finishing process, we are able to selectively coat certain areas of the steel strip while leaving other areas untreated. In this way, we not only use our resources more sustainably, but can also offer different properties on different areas of the same steel strip.

For example, we can add a coating of silver to specific parts of strip steel that has already been refined with copper, nickel or tin.

The result of our innovative finishing processes are precision products of the highest quality. This applies to dimensional tolerances and mechanical values as well as flatness and surfaces.

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We have been carrying out both finishing and selective finishing on strip steel and punched steel for many years thanks to our specially designed production facilities. For example, in addition to full-surface finishing, we are also able to silver-plate very small sections of punched strip.

Multi-plating

Multiple coatings - multiple functions

Multi-layer surface coating - a plus for our customers.

Our production facilities are ideally equipped to offer multi-layer finishing, in which we apply several layers of different metals to the surface of our strip steel. This allows us to combine the advantages of different metal coatings. For example, increased corrosion resistance, improved electrical conductivity and an aesthetic appearance.

Cu + Sn
Coating steel strip with copper (Cu) increases its conductivity. If this is followed by a coating of tin (Sn), the tin layer also increases the solderability of the material.

Cu + Ni
We can also coat strip steel with copper (Cu) to increase the conductivity, followed by a coating of nickel (Ni), for example to increase corrosion protection and as a diffusion barrier.

Cu + Ni + Sn
In triple-plating, a copper (Cu) coating increases the steel's conductivity, the nickel (Ni) coating creates a diffusion barrier and if this is followed by a tin coating, the tin layer increases the solderability of the material.

At this plant, we produce uncoated cold-rolled strip:


At these plants, we finish cold-rolled strips and non-ferrous metals:

Contact

 

Sales Manager
Dirk Scholz
Tel. +49 2374 56-187
dirk.scholz(at)knauf-interfer.com
 

Managing Directors
Bernd Jesorke
Domenico Marino
Thomas Niederhofer
Dr. Stephan Scharfenorth

 

Head of Key Account Management / Export
Refinement
Peter Plobst
Tel. +49 2331 91068-10
p.plobst(at)galvano-lenzen.de

 

Contact (ad interim)
Julia Nitsch
Tel. +49 203 45669-142