Graphite crucibles, crystallizers, and foundry molds
1. Application:
Due to its specific properties, graphite is an irreplaceable material in the production of high-temperature-resistant elements used in the metallurgical industry. For many years, we have been supplying the majority of foundries, especially those in the jewelry industry, with graphite products such as crucibles, crystallizers, casting molds, and more. We manufacture crucibles for resistance furnaces, induction furnaces, centrifugal casting machines, and for direct melting with a torch. Our product range includes crucibles for most Polish furnace brands (Olimpia, AKME, Argenta, Avalon) and international brands (Schultheiss, Indutherm, Yasui, Galleoni, Opticon).
We produce items based on descriptions, drawings, or sketches. Leveraging our knowledge and experience, we advise our clients on material selection and adjust product parameters to accommodate any modifications introduced by them.
2. Assortment
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Collar crucibles
The most popular crucibles on the market are collar crucibles. We successfully manufacture them from medium-grain materials such as FN, FNS, and isostatically pressed materials like JP. We produce them in standard dimensions, as well as according to individual orders from our customers based on drawings or provided patterns.
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Bottom-pour crucibles and plugs
We manufacture crucibles for bottom-pour casting from both of the primary types of graphite. However, we recommend the use of JP-type graphite (isostatically pressed) due to its ability to prevent graphite particles from flowing into the mold, which may otherwise detach from the vicinity of the pouring hole.
Plugs are used to seal the opening in the bottom of the crucible. They are primarily made from JP materials due to their high precision. Plugs are often modified and customized for specific crucibles and furnaces. We manufacture them based on drawings or the worn-out plug provided by the customer.
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Crucibles for bowl furnaces
Due to their large dimensions and significant graphite consumption, crucibles for bowl furnaces are mainly made from FN and FNS materials. This helps to avoid excessive operating costs.
They are primarily intended for casting silver, bronze, and brass. These metals do not require the use of very high-quality graphite.
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Crucibles for centrifugal casting machines
Centrifugal casting machines often utilize crucibles with small dimensions and thin walls. Such a design requires the use of graphite with high mechanical strength. In this case, only JP-type graphite is applied.
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Continuous casting sets
Continuous casting sets consist of two parts: a crucible for melting metal and a crystallizer in which the metal, as it solidifies, exits the installation in the form of, for example, a rod or tube. We recommend manufacturing such casting sets exclusively from JP series graphites.
The crystallizer itself requires the use of graphite with very high hardness and mechanical strength. The production of crystallizers is associated with many difficulties, and our company has extensive experience in their manufacturing. Crystallizers must be made with great precision, as the drawn metal in the form of a rod, tube, or slab can become stuck in the crystallizer and lead to its damage.
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Graphite molds, casting forms
Casting into metal molds, known as dies, has the advantage that the same mold can be used for an entire series. Die casting is finding increasingly widespread application in the casting of non-ferrous alloys. Molds and other forms do not require such high strength, so we manufacture them from FNS graphite due to their large dimensions.
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Semi-graphitic stirrers
Used for mixing metal in the crucible. The use of graphite stirrers allows for maintaining high chemical purity of alloys.