Nitriding of Forging Dies: Increase Efficiency, Reduce Costs with plasma & gas nitriding 

24.04.2025
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The RUBIG Solution: Boosting Efficiency with Nitrided Forging Dies

Nitriding Technology for Forging Dies: More Performance, Lower Costs

Two high-precision steel forging dies with polished cavities, typical for metal forming processes. These components are highly suitable for plasma nitriding & gas nitriding.

Die forging has been embedded in RUBIG’s DNA since the company was founded in 1946. From the very first successes in this manufacturing method, forging has been a central pillar of the RUBIG Group.

The forging process is a hot forming method for metals, where forging dies are made from tool steels such as 1.2343 (X37CrMoV5-1) or 1.2344 (X40CrMoV5-1). These steels are known for their high hot strength, toughness, and thermal fatigue resistance – essential properties for the demanding forging industry.

Typical Tool Damage in the Forging Process

Forging dies are exposed to extreme stresses during operation. Thermally, they must withstand continuous heat exposure as well as brief temperature spikes during pressure contact and alternating loads. Mechanically, the tools are stressed by material flow pressures, upsetting forces in the die, and varying engraving geometries. These stresses lead to multiple wear mechanisms such as abrasion, scaling, adhesion, erosion, and friction oxidation – all influenced by the tool’s geometry.

 

Two large-scale forging dies with intricate cavity designs, used in industrial forming applications. The dies are placed in a high-tech manufacturing facility. These components are highly suitable for plasma nitriding & gas nitriding.
Heat Treatment for Maximum Tool Life

 The Impact of Heat Treatment

The base microstructure of forging dies is typically set through hardening and tempering. An additional surface treatment provides a hard, wear-resistant outer layer, thereby maximizing the die’s service life.

RUBIG recognized early on that nitriding is an excellent method for surface treatment. It contributes to:

  • extending the service life of dies,
  • increasing production output, and
  • minimizing downtime.

The result: significantly lower unit costs for forged components.

 

Otto Hunold, Sales Manager for the German market and expert in nitriding technology at RÜBIG, stands in a modern industrial environment.
 We Forge Your Vision!
With nitrided dies, your forging process becomes more efficient, higher in quality – and significantly more cost-effective.
Otto Hunold, Sales Manager for the German Market
Top of Nitriding:

 Gas and Plasma Nitriding

Both gas nitriding and plasma nitriding have proven their worth in the forging industry and are successfully applied. Depending on die geometry and local conditions, one or the other process is preferred. However, plasma nitriding has gained increasing importance in recent years, offering benefits such as:

 

  • lower gas consumption,
  • easier integration into toolmaking and production lines,
  • reduced environmental footprint.

A RUBIG study has also shown that plasma nitriding, through its surface activation effect (sputtering), compensates for pre-treatment variations and delivers more uniform and reproducible nitriding results. Nitriding forging dies - including crankshaft dies and piston rod dies - maximizes tool life, improves wear resistance, and reduces operating costs.

 

CONCLUSION: 

Maximum Efficiency
 and Quality Through Nitriding

Nitriding of forging dies is a proven and efficient solution for extending service life and reducing operating costs in the forging process. By applying modern processes like plasma nitriding, which provides not only higher precision and uniform results but also environmental advantages, manufacturers can optimize their production operations.

With almost 80 years of expertise in forging, RUBIG is not only a specialist in this field but also a leading provider of nitriding solutions. In addition to contract nitriding services, RUBIG also offers in-house systems. This enables customers to carry out all nitriding processes directly at their own facilities, benefiting from greater flexibility and significantly reduced unit costs.

Enhance the performance of your dies – with RUBIG and professionally nitrided tools.

 

Otto Hunold, Sales Manager for the German market and expert in nitriding technology at RÜBIG, stands in a modern industrial environment.

Nitriding
For Forging Dies -
Maximize Tool Life & Reduce Costs
 

Optimize your forging processes with RUBIG’s precision nitriding technologies. Our gas and plasma nitriding processes ensure maximum surface hardness and reduced wear mechanisms – all with maximum cost-efficiency.

Request your free consultation now and unlock your potential!

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Otto Hunold

Sales Manager

+43 7242 293 83