Molten metal sampling device and method
AssigneeNational Steel Corporation
InventorJames R. Judge
Life of this patent
Estimating the term…
Abstract
Molten metal sampling device for and method of sampling molten unkilled metal, especially steel, to produce a sound, non-porous, solidified test sample suitable for analysis in which metallic germanium is present in the sampling device in a quantity sufficient to kill the molten metal of the sample.
Claims9
A molten metal sampling device for obtaining a test specimen of molten metal so as to determine an oxygen content in the metal comprising
- means forming a mold cavity for the reception of molten metal being sampled and the formation of a solid sample,
- a killing agent for the molten metal in the cavity, the killing agent having as an essential ingredient metallic germanium in quantity sufficient to kill the molten metal in at least part of the cavity so as to form a sound sample for analysis.
A molten steel sampling device for obtaining a test specimen of the steel during the manufacture of the steel comprising
- means forming a mold cavity for the reception of molten steel being sampled and the formation of a solid sample,
- a killing agent for the molten steel in the cavity, the killing agent having as an essential element metallic germanium in quantity between about 0.01 and about 1.0% by weight of the sample.
A molten steel sampling device for obtaining a test specimen of steel during the manufacture of the steel comprising
- means forming a mold cavity for the reception of molten steel being sampled and the formation of a solid sample,
- a killing agent for the molten steel in the cavity, the killing agent having as an essential ingredient metallic germanium in quantity sufficient to combine with between 20 to 2000 ppm of oxygen in the molten steel.
A method of sampling a bath of molten metal to obtain a test specimen comprising
- providing a sampling device having a mold cavity for receiving molten metal to be solidified to form a sample,
- introducing molten metal from the bath into the mold cavity,
- contacting the molten metal in the mold cavity with a killing agent having as an essential ingredient metallic germanium in quantity sufficient to combine with the oxygen in the molten metal forming germanium dioxide to kill the metal in at least a portion of the cavity, and
- solidifying the killed molten metal to form a sample from which a test specimen can be obtained.
A method of sampling a bath of molten steel to obtain a test specimen comprising
- providing a sampling device having a mold cavity for receiving molten steel to be solidified to form a sample,
- introducing molten steel from the bath into the mold cavity,
- contacting the molten steel in the mold cavity with a killing agent having as an essential ingredient metallic germanium in quantity between 0.01 and 0.50% by weight of the sample, the contact between the killing agent and the molten steel in the cavity being such as to obtain thorough mixing of the two in at least a portion of the cavity to form germanium dioxide and thereby kill the molten steel, and
- solidifying the killed molten steel to form a sample from which a test specimen can be obtained.
A method of sampling a bath of molten steel to obtain a test specimen comprising
- providing a sampling device having a mold cavity for receiving molten steel to be solidified to form a sample,
- introducing molten steel from the bath into the mold cavity,
- contacting the molten steel in the mold cavity with a killing agent having as an essential ingredient metallic germanium in quantity sufficient to combine with between 20 and 2000 ppm of oxygen in the molten steel so as to form germanium dioxide, the contact between the killing agent and the molten steel in the cavity being such as to obtain thorough mixing of the two in at least a portion of the cavity, and
- solidifying the molten steel treated with the killing agent to form a sample from which a test specimen can be obtained.
Dependencies are inferred from the claim text.