Schmolz + Bickenbach/NPE Easy-to-machine mould steels for the plastics industry

Editor: Rosemarie Stahl

Whether PET bottle, car headlight or medical packaging – precisely shaped plastics are produced in moulds made of high-grade steel. At NPE 2018, Schmolz + Bickenbach USA will be showcasing innovations and established solutions of mould steels from Deutsche Edelstahlwerke (DEW) and Finkl Steel.

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At NPE, Schmolz + Bickenbach will present steels particularly aimed at the plastics processing industry.
At NPE, Schmolz + Bickenbach will present steels particularly aimed at the plastics processing industry.
(Source: Deutsche Edelstahlwerke)

The application-specific materials manufactured by the subsidiaries of the Schmolz + Bickenbach Group are resistant to corrosion, easy to polish, easy to machine and wear-resistant, depending on the material.

One of the main focuses at the show will be on an innovation from Finkl Steel. The pre-hardened mould steel Corebloc was engineered for the core plate of injection moulds of up to 1,015 mm in size as well as for injection moulding tools. The special steel is characterised by excellent through-hardenability compared to standard materials such as 4140 and 1.2312, Schmolz + Bickenbach said. Machinability and resistance to wear are also outstanding. Corebloc is suitable for laser-hardening, chrome-­plating and nitriding.

The plastic mould steel MD-Xtra SH (Super Hard) from the Finkl Steel portfolio will also be presented. Microalloying additions ensure higher hardness levels than other materials. With a hardness of up to 43 HRC, the wear resistance is significantly increased. Polishability is guaranteed up to 1200 grit. MD-Xtra SH is ideal for manufacturing sophisticated automotive components with extremely smooth surfaces, the company noted.

“Bringing out the shine in plastic mould manufacturing” is the motto of this year's trade fair launch of the corrosion-resistant, hardened high-grade steel Formadur PH X Superclean from DEW. With its polishability, it is an ideal solution for manufacturing reflector and lens moulds, DEW stated. Formadur 2083 Superclean from DEW is also known for good polishability and resistance to corrosion. Thanks to its wear resistance, it is ideal for PVC extrusion tools and smaller cross-section injection moulds. Schmolz + Bickenbach will also exhibit Corroplast FM from DEW, a material engineered for sophisticated plastic mould bases. According to DEW, the pre-hardened stainless steel convinces with its machining characteristics.