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US 9,327,347 B2Granted
Niobium as a protective barrier in molten metals
AssigneeSouthwire Company
InventorsVictor F. Rundquist, Kevin S. Gill
Life of this patent
Estimating the term…
Abstract
Devices may be in contact with molten metals such as copper, for example. The devices may include, but are not limited to, a die used for producing articles made from the molten metal, a sensor for determining an amount of a dissolved gas in the molten metal, or an ultrasonic device for reducing gas content (e.g., hydrogen) in the molten metal. Niobium may be used as a protective barrier for the devices when they are exposed to the molten metals.
Claims14
A method for producing a solid article from a molten metal, the method comprising:
- providing a bath comprising the molten metal;
- introducing molten metal from the bath into an entrance of a die, the die comprising:
- (i) an outer layer comprising graphite;
- and
- (ii) an inner layer comprising elemental niobium, the inner layer having a thickness in a range from about 1 to about 10 microns;
- and
- processing the molten metal through the die while cooling to produce the solid article at an exit of the die.
4 more elements
A method for producing a solid article from a molten metal, the method comprising:
- providing a bath comprising the molten metal;
- introducing molten metal from the bath into an entrance of a die, the die comprising:
- (i) graphite portions;
- and
- (ii) a coating comprising elemental niobium over the graphite portions, the coating having a thickness in a range from about 1 to about 10 microns;
- and
- processing the molten metal through the die while cooling to produce the solid article at an exit of the die.
4 more elements
Dependencies are inferred from the claim text.