Thermal insulating materials for steelworks can be divided into three groups: 1. insulation coverings, 2. cast stream protection coverings, 3. exothermic insulating agents. They are based on highly refractory ¬fillers, fibers and binders. Insulation coverings are pre-formed highly refractory models for thermal insulation of heads in classic ingot mold casting in shapes of segmented coverings,
The benefits of the use of exothermic insulating materials during ingot casting process are presented on the animation below. Different insulating products were applied at the top of the mold during teeming and solidification. MAGMASOFT® casting simulation software was used to show the difference between uninsulated (left side of the animation) and insolated mold (right
Refractory coatings are applied to sand moulds and cores in foundries (steel castings, grey cast iron and ductile iron, and non-ferrous metals). Refractory coatings provide a protective barrier between the molten metal and the mould or core substrate during the casting process, ensuring the integrity of the cast surface and preventing defects, such as segregations,
During steel solidification volumetric contraction occurs inside of an ingot mold, resulting in a cavity know as pipe. To minimize a depth of the pipe insulating materials are applied at the top of the ingot. To form hot top feeder head, insulating or exothermic coverings are used, in the form of plates, rings, segmented plates
During steel solidification volumetric contraction occurs inside of an ingot mold, resulting in a cavity know as pipe. To minimize a depth of the pipe insulating materials are applied at the top of the ingot. To form hot top feeder head, insulating or exothermic coverings are used, in the form of plates, rings, segmented plates
Exothermic-insulating materials are used as auxiliary materials in steel foundries, cast iron foundries, non-ferrous foundries and elsewhere. Materials with exothermic and/or insulating function differ in composition, exothermic effect, insulating ability, ignition temperature, method of manufacture and other properties. For effective use of such materials, the manufacturer should be familiar with thermal properties and experimental techniques
- 1
- 2