Investment Casting

Dean Group provide a specialised investment casting service to help your business mass-produce complex, detailed metal components. We are proud members of the Cast Metals Federation, as well as being accredited by the BSI with the ISO 9001:2008 accreditation, we have the expertise and experience to cast a range of ferrous, non-ferrous and exotic metals to fit your exacting design specifications.

At Dean Group, we have been providing specialised metalworking services, including lost wax casting since 1972. We pride ourselves on being able to tackle technically challenging projects and to supply you with the parts you need, in whichever industry you may work.

Our manufacturing (casting foundry) facilities in Manchester are equipped to handle your investment casting needs, with a team of engineers working to strict standards to give you a quality-assured end product. We support this with a well-established, fully managed low cost sourcing operation through supply partners in China, and UK stock holding facilities to overcome the extended lead times from overseas supply.

What Is Precision Investment Casting?

Investment casting, also known as lost wax casting, is a traditional process, which has been used for centuries to produce detailed, intricate metal parts and components. Compared to other manufacturing methods, it is a cost-effective way of producing intricate products, providing significant design flexibility, with excellent dimensional accuracy and surface finish. Our foundry can cast with a wide variety of materials, although stainless steel, carbon steel and alloys for aluminium casting are the most common options.

The lost wax casting process uses a detailed wax pattern, produced from a master tool, which is then coated with a layer of refractory ceramic slurry to create a solid shell. The wax pattern is melted out (dewaxed), and the molten metal invested into the shell; once set, the shell is removed and the part can be divested for finishing operations and quality control. Our expertise and precision lost wax casting systems ensure an outstanding level of accuracy at every stage, producing quality-assured pieces which meet all your requirements for strength, integrity and composition.

We can also use 3D printing techniques to produce the initial wax pattern, allowing for rapid prototyping for fit and function testing and process validation before moving on to full scale production.

What are the advantages of Precision Investment Casting?

Investment casting has several advantages over other methods such as sand casting and lost foam casting. Investment casting is ideally suited to smaller, more intricate designs and provides the precision necessary to incorporate logos, product IDs and numbers onto the surface.

Unlike sand casting which requires moulds to be broken apart to divest the pattern, the investment casting process leaves only a minor parting line that is easily removed, resulting in a far smoother surface. Investment casting generally does not need much in the way of secondary processing (polishing, trimming etc.). Investment casting uses hard refractory ceramic, creating finished parts with much tighter tolerances than sand casting.

What are the Alternatives to Precision Investment Casting?

The alternatives to lost wax casting are driven by a number of factors including size, weight, accuracy requirements and volume; often the boundaries are not clearly defined and other considerations may affect the choice of process such as time to market or capital outlay for tooling.

Investment casting is however one of the most flexible processes, offering competitive production costs against relatively low tooling outlay, in the full range of materials and with low, medium and high volume production capabilities. The nature of the tooling construction and the manufacturing process also means that there is a high level of design flexibility and dimensional accuracy resulting in lower post cast process costs.

Other Services

In addition to our investment casting, Dean Group are able to offer a selection of other services, including die casting, pressure die casting, metal injection moulding, and forging. This allows us to provide the most appropriate metalworking process for your project’s needs.

We can also assist with the design process, taking your concept from initial concept to generate 3D CAD, validating the design with casting simulation software and then through prototype and sampling, to approved production. Alternatively, for existing parts, we can import existing CAD data to improve and manufacture your part.

Contact Dean Group for Your Quote

To find out more about our investment casting, or to get a quote for your project, please get in touch with us on 0161 775 1633 or submit your enquiry online.