Why do you upholstery in the foundry
SiC cooling compound
The need for a casting to accelerate the solidification, partly to achieve a denser structure, partly to achieve a higher hardness, is well known. Ceramic SiC cooling plates and graphite molds have proven to be superior and also more economical than the molds made of cast iron that were common in the past. In the case of entangled castings, the use of such ceramic SiC cooling plates encounters difficulties because of their necessarily fixed rectangular dimensions.
In line with practical requirements, the malleable, ceramic SiC cooling compounds were developed which, compared to the ceramic SiC cooling plates, offer the advantage of being able to be used at any point regardless of the profile of the casting.
The cooling effect depends on the degree of compression and the thickness of the layer applied. In any case, it will be less than that of the fired ceramic SiC cooling plates. More important than this, however, is the fact that the ceramic SiC cooling mass KERAMFORM F3 causes an emphatic, local compression of the cast.
The ceramic SiC cooling compound KERAMFORM F3 disintegrates after casting without affecting the quality of the molding sand and is either treated with cold resin or CO2 hardened.
Two SIC cooling compounds example drawings illustrate the use of the ceramic SiC cooling compound KERAMFORM F3 explain in the case of thick-walled castings. It was essential to avoid porosity in the casting, as it often occurred in the past. KERAMFORM F3 is either built into a conventional core (drawing 1) or inserted into the mold in the form of solid cores (drawing 2).
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