Apparatus for anticipation of structure of casting alloys and particularly the degree of spheroidization of cast iron
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United States of America Patent
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Sep 29, 1987
Grant Date -
N/A
app pub date -
Oct 17, 1986
filing date -
Oct 31, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The apparatus has a supply system 1 and measuring system 2, connected via suitable electrodes to the mould 3. This mould 3 has a cylindrical shape and a cylindrical pouring cup. The cavity of the mould 3 has been divided by vertical walls 4 and 5 into three parts in such a way that the wall 4 divides the mould 3 into two halves and the wall 5, in turn, divides one of the halves also into two equal parts. The electrodes of the supply system 1 and measuring system 2 have been mounted in the bottom of the mould 3 in the portions delimited by the wall 5. The shape of the mould ensures a directional solidification of the specimens contained therein. Owing to this a compact specimen is obtained without shrinkage porosities and contraction cavities over the measuring length. The structure of the alloy is anticipated from the curve of variations of voltage signal during the period from the moment of pouring of liquid metal into the mould 3 to the moment of solidification of the specimen.
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