RAMPF Group has set up facilities for an innovative casting technique to produce high-quality close contour models with its RAKU-TOOL Close Contour Casting technology.
RAMPF explains that by using vacuum casting equipment, close contour models are casted seamlessly smooth with fine surface structure and high dimensional stability. These castings are produced without the need for conventional, time-consuming model construction.
According to RAMPF, with RAKU-TOOL Close Contour Casting, its customers in the aerospace, automotive, marine, motorsports, railway, and wind energy sectors in the NAFTA market now have access to an innovative technology for producing master models cubing models, moulds, and fixtures.
RAMPF adds that its RAKU-TOOL Close Contour Castings, made of cast polyurethane with a density of 0.8 g/cm3, is supplied to the customer as a near net shape of the customer’s CAD data. The production process takes place in-house at RAMPF Group using the customer‘s areal data. A lightweight close contour mould is constructed using RAKU-TOOL board material or a combination of board material and EPS.
The mould is then machined, a release agent applied, and then the mould is filled using a special casting process with a 2-component mixing and dispensing system. After demoulding and post cure of the casting, it is returned to the customer for finish machining.
“With our close contour technology, conventional and time-consuming model construction is no longer required, as there is no need to bond board material,” explains Mark Davidson, Sales Manager for Tooling Material at RAMPF Group. “There is no handling of liquid chemistry required, so customers can concentrate solely on milling. Furthermore, less manual finishing is required as the surface is seamless, smooth, very dense, and free from bubbles due to our vacuum casting process.”
RAMPF explains that the RAKU-TOOL Close Contour Castings are of similar quality to the renowned range of RAKU-TOOL modeling boards, but without the bonding lines. The material has good dimensional stability, fine surface structure, and is isotropic similar to the board material. Furthermore, there are ecological advantages – the close-contour shape of the casting uses less material, causes less waste, and requires less time and energy for milling.
According to RAMPF, the introduction of RAKU-TOOL Close Contour Casting technology is a further milestone in the ongoing technology transfer between RAMPF Group and German-based RAMPF Tooling Solutions. “With first-class modeling and styling boards, the entire range of Close Contour products – castings, blocks, and pastes –, as well as liquid systems for various manufacturing processes, construction methods, and applications we can offer our customers a unique and encompassing product and service portfolio for innovative modeling and mould engineering,” Davidson emphasises. “In the near future, we will also be setting up our own tooling chemistry laboratory, which will enable us to serve our customers even better and faster.”