A closer look at the advantages of conformal cooling

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SLM exceeds the limits of traditional machining practices, eliminating barriers to obtaining uniform mould temperature for critical areas. It provides total geometric freedom to implement cooling circuits that closely follow the part’s shape.

HRS Flow said it offers filling, packing, warpage and cooling analysis. This software allows for the comparison of traditional cooling practices and systems supported by SLM technology to improve the selection of the best technical solutions for the application.

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In order to insure the best results, the conformal waterline study is followed by a fluid dynamic analysis for speed, fluid flow and pressure loss through the cooling channels to ensure maximum cooling efficiency and quality. The result is a precise solution that takes into full consideration the exact heat loss parameters of the hot runner system.

The advantages of SLM technology for cooling inserts

HRS Flow said it promotes the use of SLM technology in plastic moulding. This involves manufacturing injection mould inserts and fittings where the cooling process is a key factor in optimising production. SLM is also a more suitable alternative to highly conductive materials with poor mechanical properties and limited resistance to wear and tear while still maintaining hardness levels common in tool steel.

SLM inserts are manufactured with a lifespan equivalent to the mould’s and designed to withstand the demands of high-volume production applications. Thanks to the quality of the powder used, the mechanical properties, strength and workability of the finished insert are virtually identical to those of forged steel. SLM inserts are capable of heat treatment (to achieve hardening of 52-54 RC), and they can accept several surface treatments, including nitriding, nickel plating and PVD. The manufactured insert can be modified or welded or polished like a traditional forged steel insert. The maximum dimensions of an insert manufactured using an SLM process are: 250 x 250 x 220 mm.

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