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 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 9 for Aluminum 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.