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FERRUX Exothermic Topping Material Designed for Investment Castings

FERRUX exothermic topping materials produce a highly exothermic reaction that prevents the formation of a metal skin, allowing atmospheric pressure to act on the solidifying casting tree.

Once the exothermic reaction subsides, the topping provides superior insulation to the casting throughout solidification. FERRUX exothermic topping materials are applied immediately to the pouring cup when the casting cavity is filled.

Engineered with extraordinary sensitivity to quickly generate heat, FERRUX exothermic topping materials are also formulated to ensure minimal metallurgical contamination from tramp elements and carbon. FERRUX formulations are available for stainless steels and nickel and cobalt superalloy applications.

FERRUX exothermic topping materials provide the quality conscious investment caster with considerable improvements in terms of reliability, product quality and process efficiency and offer:

  • Consistent casting results
    • Controlled thermal properties
    • Strong exothermic reaction
    • Castings open to atmospheric pressure
    • Minimal tramp elements and carbon contaminants
  • Uniform metallurgical quality
    • Low carbon content (less than 1%)
    • Certified tramp element analysis
  • Reduced melt refining time
    • Low tramp element contamination from foundry returns

FERRUX CP5665 and FERRUX CP5292B hot topping compounds are applied to the top surface of open pouring cups and risers and are specially formulated to meet the needs of the investment caster.

FERRUX 107F hot topping is a highly exothermic low carbon riser topping for stainless steel casting applications.

FEEDEX 4 and FEEDOL 17 for Copper Alloys

FEEDEX 4 covering powder for copper base alloys prevent a premature solidification of the feeder surface due to their exothermic reaction and strong insulating residue after ignition.

FEEDOL 17 cover powders are a highly effective, quick-reacting type for brass, aluminium bronze and red brass.

FEEDOL 20 for Aluminium Alloys

FEEDOL covering powder for light alloys prevent a premature solidification of the feeder surface due to their exothermic reaction and strong insulating residue after ignition.

FEEDEX HD1 Powder Z25

FEEDEX HD1 Powder is a high quality anti-piping compound supplied in powder form with low levels of lead and zinc.  It is especially suited to small to medium steel investment castings where impurity levels are of paramount importance. 

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Foseco is a proud member of the Investment Casting Institute