Surface treatment and tempering of metal springs

Surface treatment and tempering play an important role in the spring industry to protect metal springs from corrosion, reduce friction and improve their performance.

The main processes for the surface treatment of metal springs are:

Zinc flake coatings with Delta Seal:
This coating technique provides excellent corrosion protection for metal springs. Delta Seal forms a thin but very resistant protective layer on the surface, ensuring high resistance to corrosion, wear and friction. Areas of application include the automotive industry, electrical engineering and household appliances.

Coatings with bonded coatings:
These coatings serve to improve the friction properties of the metal springs. They reduce wear and ensure low-friction movement. Bonded coatings are used in the automotive industry, mechanical engineering and medical technology.

Galvanizing metal springs offers a high level of protection against corrosion because a layer of zinc is formed on the surface. This process is often used in the construction industry, in plant construction and in electrical engineering.

Nickel Plating:
Nickel plating protects metal springs from corrosion and gives them an aesthetically pleasing surface. Nickel coatings are used in various industries including electronics, jewelry manufacturing and automotive.

Tinning metal springs provides protection against corrosion and improves the solderability of the surface. This process is often used in the electrical industry, in model making and in aviation.

Silver Plate:
Silver plating gives metal springs a silver finish that is not only aesthetically pleasing but also provides protection against corrosion. Silver-plated nibs are used in jewelery making, in musical instrument making and in the optical industry.

This process is used on stainless steels to increase corrosion resistance. It forms a protective passive layer on the surface. Passivated springs are used in food processing, the chemical industry and medical technology.

Blueing gives the surface of the metal springs a thin layer that protects against corrosion and at the same time offers a decorative look. Blued springs are used in the weapons industry, in tool making and in precision engineering.

Oil film and lubricant treatment:
Treatment with special oils or lubricants reduces friction and extends the life of the metal springs. This method is used in various industrial sectors, especially in the mechanical engineering industry and in the automotive industry.

Shot peening:
Shot peening involves treating the surface of metal springs with shots made from specific materials to remove imperfections and create a smooth finish. This process is used in aerospace, toolmaking and electronics.

Grinding (Trowalizing):
In vibratory finishing, metal springs are spun in a drum together with grinding tools and grinding fluid. This smoothes edges, eliminates irregularities and improves surface quality. Vibratory finishing is used in many industries, especially in the automotive industry, in mechanical engineering and in jewelry manufacture.

It should be noted that the choice of surface treatment depends on various factors such as the area of application, the specific requirements and the environmental conditions.
Please contact us when choosing the optimal surface treatment and coating.

Our company uses the following surface treatments and finishes:

  • Zinc flake coatings with Delta Seal
  • Coatings with bonded coatings
  • Galvanizing
  • Nickel plating
  • Tinning
  • Silver plating
  • Passivate
  • Bluing
  • Oil film and lubricant treatment
  • Shot peening
  • Grinding (Trowalizing)

Highly stressed technical metal springs are often surface treated or tempered by shot peening.

Your contact for the production of technical metal springs :

Christian Neumann
Tel: 0212 / 3824187-3