Küttner GmbH & Co. KG

The process of sand treatment is decisive for the quality of the mold. In every technological step - whether during conditioning, the bunkering of used sand or sand preparation - it is important to achieve the optimum process parameters as well as to keep them stable and reproducible. A task that requires a high degree of experience and good technology.

Küttner knows the different philosophies and has adapted the products to the specific foundry applications.

For the preparation of bentonite-bound molding sands, we preferably offer turnkey solutions: from the used sand conveyor in the basement to the sand hopper of the molding plant including quality control of the molding sand. As an used sand cooler, we use fluidized-bed and continuous-flow mixers of our own design as well as vortex or speed-mullers.

Used sand is reclaimed and replaces new sand in the preparation plant and also is used for core shooting. Küttner offers specially developed thermal-mechanical sand reclamation for such tasks. A convincing alternative to reduce amounts of debris sand!

Ask our foundry team about the quality of this regenerate - you will be amazed!

In 2014, Küttner Centrifugal GmbH & Co. KG, a joint venture with DÜKER was fully integrated in KÜTTNER. DÜKER centrifugal casting technology is worldwide in operation for more than 60 years.

Küttner in Karlstadt projects, plans and designs complete centrifugal casting machines and plants with associated production lines, tailored to the needs of our customers.

Küttner Centrifugal Casting - with DÜKER Technology – trim cast iron into shape. Our production plants are used worldwide for the manufacture of pipes, cylinder liners as well as other rotation-symmetrical castings made of different materials.

The centrifugal casting process is based on the principle of mould filling through centrifugal forces. The melt runs through a casting runnel into the mould rotating horizontally or vertically. The inside contour of the centrifugal mould images the outside radius of the rotation-symmetrical casting which is produced. The inside diameter of the casting is defined through the melt quantity. The melt is pressed to the inside of the mould by the centrifugal forces and solidifies there. The casting is drawn out of the mould while still glowing.

Worldwide, Küttner‐Group has, to date, implemented more than 450 cupolas in various designs, with melting capacities of up to 100 t/h. Our linecard also includes cupolas for long‐term operation.

Considering every customer request, we find the best practice solution matching your facts and figures in combining performance parameters and project specific demands.

Existing shops can either be modernized or rebuilt, in any case meeting present emission limits. Our foundry process control system will soon pay by increasing yield.

During project planning we compare the pros and cons of different alternatives, so as to identify the optimum answer to your question. Our technology copes with low melting costs based on:

• continuous and energetically optimized counter‐flow melting with tapping temperatures of up to 1.520 °C
• high metallurgical flexibility (recarburization, alloying, use of inexpensive scrap),
• efficient energy balance due to heat recovery, e.g., for blast heating to temperatures of up to 750 °C, for heating buildings or external processes.

Let our Cupola Technology Team support you in solving your problems – or much better – in avoiding them.