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Meusburger

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Meusburger Georg GmbH & Co. KG
Ramada Acos

Meusburger's steel plates are heat treated for stress relief in one of the three furnaces at approximately 580°C for 24 hours. During stress-relieving it is important to heat the plates slowly and consistently and then maintain this level for six hours. This guarantees that thick plates are also heated through to the core. The subsequent slow, regular cooling phase of 14 hours in the furnace is even more important. Here the plates are cooled by approximately 35°C per hour. The daily capacity of the Meusburger furnaces is 240 tonnes.

Advantages of stress-relieved steel:

  • Reduced warping during machining
  • Shorter machining times due to reduced oversize
  • Longer tool life
  • No cracks in subsequent heat treatment
  • Advantages in automated processing, particularly when using clamping systems

With the low corrosion, high alloyed, and hardened and tempered tool steel 1.2085, corrosive plastics such as polyvinyl chloride (PVC) or polyoxymethylene (POM) can be processed due to the high chromium content of 16%. Moreover, the mould maintenance requirements are reduced. Another indispensable group of steel in die and mould making are the through-hardening steels. The high alloyed hot-work steel 1.2343 is characterised by a high toughness and high-temperature resistance, hot crack resistance and very good thermal conductivity, which makes it suitable for cavity plates or inserts for die casting moulds (Al, Mg, Zn, etc.).

To satisfy very high requirements on the material properties like toughness, polishability, or uniform characteristics over the entire block cross-section, this steel is also available in ESR grade. During electro-slag remelting (ESR), a conventionally produced steel block is again melted. When the melt passes through the slag, the sulphur and non-metallic inclusions are absorbed by the slag and later separated. The remelted block then solidifies under the slag. An improved degree of purity and good isotropy over the entire cross section is achieved through a reduction of the segregation intensity.

Nickel alloyed steel for inserts with high surface requirements

The nickel alloyed steel for through hardening 1.2767 is best suited for mirror polishing due to its metallurgical characteristics. Typical applications are for example complex cavity plates and inserts with high surface requirements. To avoid undesirable warping during injection moulding, the tempering temperature after the hardening process must at least be 50°C above the usable temperature.

In addition to steel, aluminium also offers advantages in die and mould making. The very good thermal conductivity and the low weight of aluminium allow very good processing and welding. It is suitable for making plates for mould bases, rotary index tables and machined pieces for machine and jig construction as well as foaming moulds and prototype moulds.

The selection of the right material depends on the application and the price. There is no 'all-purpose' material that combines all positive characteristics.

(ID:43956860)

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