NEW MATERIALS WITH TRADITIONAL CASTING TECHNOLOGY
Welcome to CMMC GmbH – the innovator in the traditional casting industry. CMMC stands for Cast Metal Matrix Composites or general for cast composites.
Our answer to omnipresent demands for lightweight construction, energy savings, and resource efficiency is the development and application of novel composites which elegantly combine the properties of disparate materials. In this way, we do away with the limitations imposed by the use of monolithic materials.
CMMC GmbH, a successful Startup company from the University of Technology Chemnitz, develops MMC-structure materials of varying compositions, which is a promising solution to the current needs of industry. To start with, we are limiting ourselves to materials with the highest application potential – particle-reinforced aluminium alloys, abbreviated AMC. In this pursuit, we use an innovative manufacturing process which enables the continuous production of AMC materials on an industrially relevant scale, enabling the saving of energy not only in the material manufacturing process but also in their final application. We are turning AMCs from a niche product into a material with myriad applications.
Commercial Vehicle Industry
Mechanical Engineering Industry
Research and Consulting
Casting trials successfully carried out with pilot customers
Receiving the Prize of the TUClab Competition 2020
Founding of CMMC GmbH
Melt Extraction in a Low-Pressure Casting Process
The melting of the metal matrix occurs in a vacuum-capable, electrically heated resistance furnace with a maximum temperature on 950 ℃, which enables the production of aluminium melt. The produced metal melt is subsequently transferred into the processing chamber through the generation of a pressure difference.
In order for an MMC melt to develop out of the metal melt, heated particles are added in defined amounts to the metal melt during the vacuum casting process. In contrast to other injection procedures, the available surface of the melt is minimised so that the particle content is maximised.
To ensure a homogeneous and qualitatively high-value MMC melt, the injected particles must be wetted by a metal matrix and the gas pockets removed. The quality of the MMC melt is facilitated by the predominant vacuum conditions.
Through the application of large, partially automatised casting chambers, different casting moulds (primarily permanent moulds) can be generated in a continuous fashion for the production of bars, ingots, and semi-finished products for further processing.
INGOTS AND BARS
Materials for the casting industry for remelting and casting.
Semi-finished products for forming technology and mechanical finishing.
Apply our process in your finishing line.
RESEARCH & DEVELOPMENT
Creation of customised solutions and consulting on material-specific questions.
THE PEOPLE BEHIND CMMC
We, Dr. Eng. Marcel Graf, Robert Pippig, Regina Hessenmüller-Lampke, Jens Winter and Dr. Eng. Thomas Grund, have set out to turn metal matrix composites (MMC) from a niche product into a widely applicable one. We are united in our drive to successfully transfer cutting-edge research results and innovations from the laboratory/science to industry.
Marcel Graf, who studied as a casting mechanical engineer (TU Bergakademie Freiberg), leads our company as the CEO. The technical side is managed by Robert Pippig, our experienced specialist in the field of AMC materials. Regina Hessenmüller-Lampke, our financial wizard, brings decades of experience in the banking industry into the fold. Our production benefits from the immense experience of our foundry mechanic Jens Winter. The fifth of our number, Thomas Grund, keeps us in close contact with the latest in university research.