Back to results
US 6,360,808 B1Granted
Exothermic sleeve compositions containing aluminum dross
AssigneeAshland Inc.
InventorsHelena Twardowska, Ronald C. Aufderheide
Life of this patent
Estimating the term…
Abstract
The invention relates to exothermic sleeve compositions comprising (a) an oxidizable metal where the oxidizable metal comprises aluminum dross, and (b) an oxidizing agent capable of generating an exothermic reaction. The invention also relates to sleeve mixes prepared with the sleeve compositions, the use of the sleeve composition to prepare sleeves, the sleeves prepared with the sleeve compositions and the use of the sleeves to prepare metal castings.
Claims19
An exothermic sleeve composition comprising:
- (a) an oxidizable metal where the oxidizable metal comprises aluminum dross, wherein the aluminum dross comprises from 0.5 to 15 weight percent fluoride, where the weight percent is based upon the total weight of the aluminum dross, and
- (b) an effective amount of an oxidizing agent capable of generating an exothermic reaction.
A process for casting a metal part which comprises:
- (1) using an exothermic sleeve of claim a mold assembly of a casting assembly;
- (2) pouring metal, while in the liquid state, into said casting assembly;
- (3) allowing said metal to cool and solidify;
- and
- (4) then separating the cast metal part from the casting assembly.
2 more elements
Dependencies are inferred from the claim text.