Rheocasting is a melt preparation process for semi solid casting of components in high pressure die casting machines. The process was invented in Sweden and further developed during 10 years by Comptech to achieve a stable, reliable and cheap process for high quality parts.
Influence on production cost
Basically the process has been developed in the following areas of interest:
- Short change over from High pressure die casting to Rheocasting in the production cell
- Short cycle time, slurry preparation is faster than the cycle time in the casting machine
- Low cost investment, using standard components a based on standard soft ware
There are a number of casting methods in the semi solid casting family of processes. The difference between the various processes on the market are:
- Solid fraction to allow laminar flow, thus above 25-30% solid fraction
- Homogenity of the slurry, to ensure the same speed of the melt through the filling of the tool
- Cost of the process, by mixing HPDC and Rheocasting as well as low cost investment
You´ll find answers to all common questions regarding Rheocasting in our FAQ.
Alloys used in Rheocasting
With Rheocasting a wider spectrum of alloys can be used, as shown in the diagram below:
Alloys tested and used in projects and production
At Comptech we have used the following alloys in projects and in production of Rheocasted components: