Coil coating or coil embedding of refractory concrete, and method of manufacturing it.

摘要

The invention relates to a coil coating or coil embedding of refractory concrete, especially for induction coils, the refractory concrete of which has a low crack sensitivity and a low tendency to grow. For this purpose, approximately evenly distributed, alkali-resistant glass-fibres are contained in the refractory concrete. The length of the glass-fibres is preferably between 12 and 25 mm. Their volume content in the refractory concrete is preferably between 2% and 6%. <IMAGE>