Manufacturer and supplier of auxiliary materials for foundry and metallurgy.




Teeming stream protection in the steel ingot casting process

Argon shrouds are used in steel ingot casting process, to prevent re-oxidation of steel stream between a ladle and a trumpet. This is done by blowing an inert gas, usually argon through the shroud. The inert gas provides protective environment surrounding the teeming stream and thou reduce the amount of oxygen, nitrogen, and hydrogen in final products.

EXOTERM’s ARGON SHROUDS are made of highly refractory fillers, fibers, and binders, so they serve also as thermal protection.

EXIPP COVER Case study
EXIPP COVER (Exothermic plate)

How the use of the Exipp cover (Exothermic plate) has contributed to worker safety and better quality and efficient use of the melt?

The main advantages of exipp covers, as seen by steel mill workers:
- placing the cover before starting the casting (better safety)
- less smoking during the reaction (a lot of dust goes into the air during sprinkling)
- more unifrom application of the agent over the surface
- faster work process
- melt protection already during filling (temperature)
- protection of the empty ingot from impurities while waiting for casting in the production hall

Results visible on the ingots:
- Primary and secondary lunker reduction
- Greater worker safety
- prevention of inclusions resulting from impurities falling into the ingot

Kako je uporaba Exipp pokrov pripomogla k varnosti delavcev in boljši kvaliteti ter učinkoviti rabi taline
HOT TOPS Case study

Benefits of using HOT TOPS

The goal of each production is to maximize the yield and the profit. At steel ingot production that means as small and as flat top ingot head surface as possible. This way the casting yield is the highest. The ingot head contains remains of casting flux, anti-piping compound, non-metallic inclusions, etc. and has to be removed. The following advantages are obtained by minimizing the size of the ingot head:

·      Increased Casting yield
·      Increased Productivity
·      Increased Directional solidification
·      Increased Ingot soundness
·      Decreased occurrence of Shrinkage cavity/Piping within ingot body
·      Decreased Power consumption
·      Decreased consumption of auxiliar materials
·      Decreased consumption of alloying elements

For the same amount of steel to produce we thou need less time, less electricity, less raw and auxiliary materials, etc. and we get better quality steel on top of that.

The influence of “Hot Top” on ingot solidification is shown on the picture below. Hot top was applied on the right ingot mold, inside of the top of the mold, while the left mold was without it. In this particular case, just saving in liquid steel amount is around 15%. Plus, other benefits already listed above: increased productivity, increased soundness, increased power consumption, ...