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

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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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