Method and apparatus for non-destructively detecting flaws in a carbon andode
AssigneeUniversity of Maryland at College Park
InventorsPaul R. Haldemann, Eman P. Fawzi
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Abstract
A system and method of automatic, in-line electrical quality control of a carbon anode including detecting internal flaws in the carbon anode by measuring an eddy-current loss of the carbon anode and determining intrinsic resistivity of the carbon anode by measuring resistivity of the carbon anode and determining the electrical quality of the carbon anode according to the measured eddy-current loss and the measured resistivity.
Claims40
A system of automatic in-line electrical quality control of a carbon anode for use in producing primary aluminum, comprising:
- eddy current loss measuring means for measuring an eddy-current loss of the carbon anode;
- bulk resistivity determining means for measuring a bulk resistivity of the carbon anode;
- and
- electrical quality determining means for determining the electrical quality of the carbon anode for use in producing the primary aluminum according to the measured eddy-current loss and the measured bulk resistivity of the carbon anode.
A method of automatic in-line electrical quality control of a carbon anode for use in producing primary aluminum, comprising the steps of:
- (a) measuring an eddy-current loss of the carbon anode;
- (b) measuring bulk resistivity of the carbon anode;
- and
- (c) determining the electrical quality of the carbon anode for use in producing the primary aluminum according to the measured eddy-current loss of said step (a) and the measured bulk resistivity of said step (b).
Dependencies are inferred from the claim text.