Measuring and testing – Sampler – sample handling – etc. – Capture device
Patent
1985-05-29
1986-08-05
Levy, Stewart J.
Measuring and testing
Sampler, sample handling, etc.
Capture device
7386452, 73DIG9, G01N 112
Patent
active
046035907
ABSTRACT:
A sample from a bath of killed molten steel which contains aluminum is removed with a vessel having a cover which undergoes at least partial disintegration on contact with molten metal and allows molten metal to fill the vessel as soon as the latter is lowered to a preselected level. The internal space of the vessel contains a strip of magnesium and a strip of zirconium. Magnesium evaporates with an explosion as soon as it is contacted by molten metal and thereby enters into a chemical reaction with oxygen in the vessel while also expelling the remaining air through the partially disintegrated cover to further reduce the likelihood of reaction between aluminum and air which is entrained with the immersed vessel. Zirconium dissolves in the metal which fills the vessel and bonds oxygen close to the surface surrounding the internal space of the vessel. The vessel has an inner envelope consisting of foundry sand and a suitable binder, a metallic outer envelope, and a liner which is surrounded by the inner envelope and includes a quartz tube as well as a bottom wall of sheet metal. When the molten metal hardens, the resulting billet is cut in half and the thus exposed surface is analyzed inwardly of the circumference to thus ensure that the test involves an examination of material which does not contain aluminum oxide whose development is caused by entrainment of some oxygen into the bath as a result of immersion of the vessel.
REFERENCES:
patent: 3332288 (1967-07-01), Mladenovich
patent: 3559452 (1971-02-01), Perbix et al.
patent: 3704621 (1972-12-01), Zickfoose et al.
patent: 3774453 (1973-11-01), Falk
patent: 3967505 (1976-07-01), Feichtinger
Novosadov et al., "A Molten Wedge Specimen for Investigating the Reactions Between Iron and Molten Aluminium," Autom, Weld, vol. 23, No. 9, (Sep. 1970), pp. 4-7.
Staats Gotthard
Thome Horst
Aktien-Gesellschaft der Dillinger Huttenwereke
Chapman, Jr. John E.
Kontler Peter K.
Levy Stewart J.
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