Numerous customers from the model making sector use the reproduction possibilities of casting technology. Whether it’s gear wheels, clutches, chimneys, vehicle chains, the variety of possible applications for castings is almost unlimited. Brass is often used. Nickel silver is used when conductivity is required, e.g. for rail parts or vehicle wheels. Extremely high strengths can be achieved with steel castings.
In contrast to machining production techniques or pressing, castings often have small dimensional deviations. These are mainly due to the technique of wax spraying. Technical developments have made significant progress in recent years.
Nowadays, many models are created using CAD, which means that production can start with a more precise model. Silicone moulds with significantly less shrinkage and higher hardness have replaced the rubber mould as the standard mould and produce more accurate results. Programmable wax pots ensure constant parameters and therefore the more consistent achievement of dimensional specifications.
In addition, wax plotting machines can already achieve speeds that make it possible to plot complete series for absolute precision parts. The wax spraying process is being replaced here by the 3D printer. This eliminates casting shrinkage from the mould and the different cooling down of wax parts. Just the minimum shrinkage of the investment material during the casting process remains, which can be taken into account during plotting by adding shrinkage beforehand (scaling the model).
Virtually unlimited possibilities with 3D plots
3D printing is an emerging technology that everyone has been talking about for years. A large number of providers and different systems are active on the market as a result. Our employees have more than 15 years of experience in this area. When placing an order with our company using a CAD file, your product is supervised up to the finished casting and beyond.
When the file arrives, it is checked to see whether it is suitable for casting. If the fonts are too narrow, slots too narrow, radii too pointed, we contact you immediately and try to make improvements.
In addition to their own expertise, our employees also make use of working together directly with our in-house mould making and waxing department and quality control department. As a result, sprue positions, the ideal layouts for castings and similar can be discussed and clarified in advance. This helps avoid unnecessary costs and disappointments caused by faulty castings.
