The manufacture of large titanium investment castings is notoriously difficulty. The use of cold-shell centrifugal casting can provide a practical solution to the manufacture of complex thin walled titanium castings over hot shell techniques. Benefits from cold moulds and high solidification rates can lead to reduced grain size and more importantly reduction in alpha case. Castings Technology International (Cti) have developed a method of manufacturing low cost centrifugally cast titanium components with optimised grain characteristics and low alpha case levels. Utilising a wealth of experience and previous development, a fully controlled mould fill is achieved whilst taking full advantage of the centrifugal forces being applied
In the advent of a 1000kg titanium casting capability (Due 2016), Cti are optimising their existing technology (up to 300kg castings) into another dimension. A new development facility, with integrated production processes; manufactured in conjunction with world leading IC machine builders, will create a facility for pioneering development in the casting processes. The birth of this facility intends to open up the currently restrictive titanium IC supply chain. This paper will outline objectives and work packages underway in providing new and innovative methods of manufacturing structural titanium castings.