into operational dashboards, linked to energy consumption and production throughput.


European


From a regulatory perspective, climate


policy is driving


this momentum. Initiatives such as the EU Emissions Trading System (ETS) extension to smaller industrial installations are prompting proactive quantification of Scope 1 and 2 emissions.


Energy Efficiency: Focus Areas in Shell Drying, Melting, and Recovery Energy use in investment casting is inherently intensive, with melting and shell processing among the primary contributors to environmental impact. Here, technical innovation is directly translating into reductions in both emissions and cost.


Shell Drying: • Some foundries are exploring, replacing conventional warm- air circulation rooms, with low- pressure drying chambers, to significantly reducing drying times and energy requirements.


• Variable frequency drives (VFDs) on


air handling systems are


optimising airflow precisely to process demand.


• Monitoring of humidity and temperature is increasingly automated, reducing waste due to inconsistent drying conditions.


Melting: • Induction


melting


furnaces


with improved coil designs and refractory linings are achieving higher thermal efficiency and faster melt cycles.


• Process simulation tools, including digital twins, are supporting more precise energy planning, avoiding overcapacity operation.


Recovery and Waste Heat Utilisation: • A growing number of foundries are adopting waste heat recovery systems that capture thermal energy from furnace exhausts and kiln flues. * This recovered energy is often repurposed to preheat charge materials,


thereby reducing


the energy input required to reach melting temperatures.


* In some installations, waste heat is directed to maintain the temperature of shell drying chambers, improving consistency and lowering total consumption.


• Heat exchangers and recuperators are now more commonly specified in furnace upgrades, offering payback


periods of 2–4 years depending on production volumes.


• Pilot projects have also demonstrated the feasibility of integrating waste heat into building heating systems, offsetting conventional heating fuel usage and reducing Scope 2 emissions. These investments in recovery


®


measures not only contribute to decarbonisation objectives but deliver measurable reductions in operating expenses, resilience.


strengthening business


Towards a Shared Industry Roadmap While progress varies by geography and company size, there is clear evidence of convergence around certain best practices. EICF member companies are increasingly collaborating to share knowledge, standardise measurement protocols, and communicate ESG performance transparently to stakeholders.


Looking ahead, it is foreseeable that


third-party verification of emissions, circularity data, and recovery energy utilisation will become an industry norm, and that sustainability performance will be as scrutinised as cost and delivery reliability.


Conclusion The investment casting industry is at a decisive juncture in the integration of ESG into core business operations. As customers and regulators continue to raise expectations, foundries embracing measurable, verifiable improvements in areas such as waste heat recovery and energy optimisation will be best positioned to secure their place in demanding supply chains. The evolution from aspiration to action is no longer optional: it is the foundation of resilience and relevance in a decarbonising economy.


July 2025 ❘ 15


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