Moulds can be designed from a component 'blueprint' or finished drawing to fine tolerances and polished surface finishes.
Moulds are typically fabricated from hardened steel, aluminium, and/or beryllium-copper alloy, depending on the customers’ requirements.
The selection process is normally dictated by batch size and cost. Typically, steel moulds cost more to fabricate, but their longer life expectancy will compensate for the higher initial cost over a higher number of parts made before needing to be replaced.
For lower volume requirements or larger components a pre-hardened steel mould would be recommended, as they are less wear-resistant, but more economically viable. This type of steel would generally fall between 38-45 on the Rockwell-C scale. Our hardened steel moulds are heat treated after machining, increasing their hardness levels ranging between 50 and 60 Rockwell-C and therefore provide an improved life expectancy against wear resistance.
Mild steel, aluminium or nickel are only suitable for very short production or prototype runs. Modern hard aluminium (7075 and 2024 alloys) is capable of producing runs of tens or hundreds of thousands with our expert mould design.
We use Beryllium copper in areas that see the most shear heat generated or areas of the mould that require fast heat removal .
Here at Hardmetal we fabricate our moulds by CNC machining or by spark and wire erosion
For more information, please contact us today
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