Investment Castings (Congleton) Limited

Leading UK manufacturers of precision investment casting. Discover the expertise and quality that sets us apart.

Welcome to Investment Castings (Congleton) Ltd

Investment Castings (Congleton) Ltd is a leading UK supplier of high-quality castings with over 50 years of industry experience. We specialise in the lost wax casting process, delivering precision-critical investment casting renowned for their accuracy and quality.

We are one of the few companies in the UK that manage all manufacturing processes in-house. This comprehensive service includes design, tooling, rapid prototyping, casting, and finishing, allowing us to maintain complete control and ensure the highest standards throughout. Our dedication to quality is reflected in our BS EN ISO 9001:2015 certification, and we work with a wide range of materials including stainless steel, carbon steels, aluminium, brass, and bronze. Whether you need ten castings or thousands, we are here to meet your requirements.

Our valued customers come from diverse industries such as automotive, transport, defence, and aerospace. They rely on our precision, quality, and value. We believe in building strong relationships and providing exceptional customer support to meet your specific needs.

Introduction to the Process

Our In-House Manufacturing Process

At Investment Castings (Congleton) Ltd, we take pride in our complete in-house manufacturing process. Here’s how we create our precision castings:

Stage 1: Tooling

An aluminium die is produced from customer drawings by our skilled toolmakers.

Stage 2: Wax Injection & Assembly

High-technology wax is injected into the aluminium die to form a wax mould of the component. Multiple wax components are mounted onto a wax runner.

Stage 3: Primary Coat

The wax assembly is dipped into a water-based binder and coated with fine silica sand, then dried.

Stage 4: Secondary Coats

Additional layers of ceramic particles are applied and dried until the mould reaches the required thickness.

Stage 5: Wax Removal

The dried mould is placed in a steam autoclave to melt out the wax, leaving a ceramic shell.

Stage 6: Shell Firing

The ceramic shell is fired at approximately 1000°C to remove residual wax and moisture.

Stage 7: Metal Pouring

Molten metal is poured into the hot ceramic shell, creating the metal casting.

Stage 8: Shell Removal

Once cooled, the ceramic shell is removed, revealing the casting.

Stage 9: Finishing

Castings are cut from the runner and undergo any necessary finishing processes such as sandblasting, polishing, and machining.