Technologies

Original and forming technologies

An important component of the added value and vertical integration of C.HAFNER is forming processes for the production of semi-finished products. On the basis of casting products, the desired product properties are set by forming processes and heat treatments. Complete production lines are used for sheet metal, wires, tubes and rods.

Melting and casting technology

The melting and casting of precious metals is an important element of C.HAFNER’s DNA as a refinery.

Melting in a protected climate to prevent oxidation and casting with individual parameters depending on the alloy, the casting machine and the casting mould guarantee a uniform casting quality for

  • homogeneity of the composition and adherence to the guarantee
  • precious metal content limit
  • uniform casting structure, free from cavities or bubbles
  • no inhomogeneities, inclusions or foreign materials
  • exact form and dimensional accuracy

Depending on the requirements, different melting and casting systems with integrated data acquisition for process control and management are used to ensure the quality requirements are met:

  • Continuous casting
  • Vacuum casting
  • Gravity die casting
  • Granulation
  • Powder atomising

Forming technology

For heat treatment, we use the chamber, conveyor and strand furnaces for various intermediate and finished products.

Annealing types:

  • Recrystallisation annealing with or without rapid cooling
  • Stress-relief annealing
  • Solution annealing
  • Precipitation annealing

With its high production width and depth, C.HAFNER is a complete supplier of precious metal products. We deploy the best and most effective technology in order to offer the products in the desired quality. Individual specification of the technology in work schedules always guarantees consistent quality and reproducibility.

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