Materials Delaying thermal cracks reduces maintenance costs

Editor: Barbara Schulz

Germany - Toughness and resistance to thermal shock are among the most important features of DEW's new hot-working steel for Nemak, an international manufacturer of aluminium die-cast parts. Nemak’s Polish subsidiary is currently testing the steel.

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Hans-Georg Maschetzke, sales manager tool steel EU end-users, at the DEW machining and processing centre in Witten, Germany.
Hans-Georg Maschetzke, sales manager tool steel EU end-users, at the DEW machining and processing centre in Witten, Germany.
(Source: DEW)

Thanks to the improved properties of Thermodur E 40 K Superclean, Nemak, an international manufacturer of aluminium die-cast parts, is particularly interested in Deutsche Edelstahlwerke’s (DEW) new hot-working steel. According to DEW, the German subsidiary of the Schmolz + Bickenbach Group, the new material introduced last year immediately attracted a lot of attention because it delays the formation of hot cracks and thereby significantly increases the life of the tool compared to conventional hot-working steel.

Related: Interview: Tool steel rides high, other materials gaining ground

Nemak’s Polish subsidiary is currently testing whether the steel can be used as material for the inserts in the dies used for manufacturing 4-cylinder engine blocks. A single rectangular or cube-shaped insert weighs around 300 kg. “The material's toughness and resistance to thermal shock are most important to us because both of these properties have a decisive impact on the rate at which hot cracking occurs,” explains the management of Nemak Poland.

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