Investment Casting – Data Centres
Precision Castings for Next-Generation Data Centre Cooling
In recent years, Lestercast has seen a sharp rise in demand for investment castings used in data centre cooling systems. As data centres expand to support AI, high-performance computing and increasingly powerful servers, effective thermal management has become more critical than ever.
Liquid cooling systems rely on precision-engineered components to manage coolant flow, maintain system performance and support reliable operation under demanding conditions. Investment casting offers a versatile manufacturing solution for producing complex metal components, combining design flexibility, material choice and the potential to reduce machining, assembly and material waste.
Lestercast boasts over 50 years of investment casting experience, is ISO 9001:2015 & IATF16949 accredited, and are proud to support manufacturers the evolving data centre cooling market.
Data Centre Components Suited to Investment Casting;
Investment casting is particularly suited to components with complex geometries, intricate features and requirements for strength, dimensional accuracy and corrosion resistance.
- Manifolds and Coolant Distribution Headers
Manifolds and distribution headers help route coolant throughout liquid cooling systems, including coolant distribution units (CDUs) and server rack infrastructure. Investment casting can produce complex component shapes and integrated features, helping simplify designs and reduce the need for multiple separate parts.
- Pump Housings and Impeller Components
Cooling pumps require robust components designed to operate continuously within fluid-handling systems. Investment casting can accommodate complex shapes and curved profiles, offering opportunities to reduce machining requirements and support efficient component design.
- Cold Plate Manifolds and Cooling Interfaces
Direct-to-chip liquid cooling systems transfer heat away from high-performance processors. Investment cast components may be suitable for associated manifolds, bases and fluid connectors where complex geometry and reliable coolant distribution are important. Fine internal microchannels typically require additional specialist manufacturing processes.
- Heat Exchanger Components
Heat exchangers are central to transferring heat between cooling circuits. Investment casting can produce components such as end caps, header blocks, housings and structural fittings in suitable aluminium alloys or stainless steels, depending on operating temperatures, pressures and coolant compatibility.
- Valve Bodies and Fluid Connectors
Valve housings and fluid connectors help regulate coolant flow and connect components throughout a cooling system. Investment casting offers the potential to consolidate complex shapes, reduce the number of individual components and minimise welded joints where the design permits.
Why Choose Investment Casting for Data Centre Components?
Near-net Shape
The investment casting process enables intricate component shapes to be produced as near-net castings. This can reduce the need for extensive machining and, where designs allow, replace multi-piece assemblies with fewer components. Reducing joints can also help minimise potential leak paths.
A Wide Choice of Metals & Alloys
Lestercast manufactures investment castings in a broad range of ferrous and non-ferrous materials, including stainless steels, aluminium alloys and specialist nickel-based alloys. Material selection depends on the application’s pressure, temperature, corrosion resistance and coolant compatibility requirements.
Reduced Machining and Material Waste
Producing components close to their final shape can reduce machining operations and material removal compared with manufacturing from solid stock. This can offer cost and production advantages, particularly for complex parts and low- to medium-volume requirements.
Rapid Prototyping for Faster Development
Lestercast’s in-house 3D wax printing technology enables wax patterns to be produced without the initial investment in hard tooling. This provides an opportunity to develop and evaluate prototype castings before committing to production tooling, helping manufacturers progress component designs more efficiently.
Precision Manufacturing and Inspection
Dimensional accuracy, material integrity and surface finish are important considerations in fluid-handling applications. Lestercast combines investment casting expertise with in-house inspection facilities to support component quality throughout the manufacturing process. Additional machining, finishing and inspection requirements can be considered as part of the overall component specification.
Supporting the Growing Data Centre Market
As demand for data centre capacity and liquid cooling technology continues to grow, manufacturers need supply chain partners capable of producing increasingly complex components efficiently and consistently.
Lestercast provides a complete investment casting package, from prototype development through to casting, machining, treatments, finishing and inspection. Our experience across demanding engineering sectors enables us to work with customers to assess component designs, material requirements and manufacturing options.
Whether you are developing a new liquid cooling system or looking to improve the cost, weight or manufacturability of an existing component, investment casting could provide an effective solution.
Contact Lestercast on +44 (0)116 276 7284 to discuss your component design, material requirements and production volumes. Our team can help assess the suitability of investment casting for your application.