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Zetterer Laser melting technology


Zetterer Laser melting technology



  • Consultation regarding near-contour cooling in customer-specific casting molds
  • Optimization with the help of computer simulations
  • Realization of projects with Zetterer Laser Melting technology

Zetterer Laser
Melting technology

Zetterer Laser

Following injection, the temperature of the mold must be lowered quickly and evenly so that the aluminum solidifies. If the part remains in the mold too long, it will be difficult to remove. This results in warpage and friction points.

Since the area of the tablet (filling hole for liquid aluminum) is where most of the material and the highest temperature is located, this usually determines the solidification period. In terms of cooling, cooling close to the contour makes most sense. Even in the case of hotspots (hot areas in the part), the cooling period can be shortened and the occurrence of cavities reduced.

While conventional cooling can only be introduced by drilling and is usually straight, near-contour cooling with ZLM (3D printing allows cooling to be introduced along the contour in 3D. This means it can be adapted to the geometry of complicated routes (e.g. spirals).

Without cooling, the cooling period is very long. The same is true of conventional cooling (old cooling). Near-contour cooling takes place close to the "hot" zone with a large surface area. This shortens the cooling period.

The Zetterer Laser Melting generative manufacturing process is an additive process for the direct production of metallic components. ZLM is a flatbed-powder process often referred to as metallic 3D printing.

The advantage of
using 1.2343 with ZLM

We use 1.2343 instead of 1.2709 because 1.2343 has high thermal resistance and toughness, higher thermal conductivity and better resistance to hot cracking. This makes it more suitable for die casting.

Parts made from 1.2343 using ZLM can be individually hardened to a hardness of between 42HRC and 52HRC and used in the mold in the same way as parts made from normal 1.2343. So there are no limitations when compared with conventional manufacturing.

Benefits of using
ZLM for die casting

A shorter cooling period:
  • Reduces cycle times in die casting
  • Minimizes the risk of shrinkage cavities and porosity in the cast part
  • Enables minimum-quantity spraying due to effective cooling
  • Eliminates hotspots in the mold
This means better quality die cast parts as well as a shorter cycle time.

The existing
3D printer has

  • 400W fiber laser
  • Preheating of the building plate up to 400°C
  • 250 x 250 x 300 mm installation space
This makes it possible to produce internal tempering
for near-contour cooling in 1.2343.
Without cooling
Conventional cooling
3D-printed cooling
X37CrMoV5-1 C 0,38 Si 1,00 Cr 5,30 Mo 1,30 V 0,40
Thermal conductivity at °C 20 350  700
W/(m K) Annealed 29,8 30,0 33,4
W/(m K) Quenched & tempered 26,8 27,3 30,3
X3NiCoMoTi18-9-5) C < 0,02 Mo 5,00 Ni 18,00 Co 10,00 Ti 1,00
Thermal conductivity at °C 20 350  700
W/(m K) 14,2 18,5 22,5

Improves temperature regulation through the use of 3D-printed cooling

The microstructure of the 3D-printed components corresponds with NADCA C through F.
    Info sheet
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    "High Performance - Precision - Reliability"

    Quick Contact

    +49 (0)9171 83999-0

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    Zetterer Präzision GmbH

    Plant I
    Venetianerstraße 6
    91154 Roth

    Plant II
    Meckenloher Straße 9
    91126 Rednitzhembach

    Telephone: +49 (0)9171 83999-10
    Contact Person:
    Alexander Zetterer

    Quality control
    Telephone: +49 (0)9171 83999-26
    Contact Person:
    Markus Zucker

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