US PATENT SUBCLASS 420 / 21
.~.~.~.~ Mechanically plunging magnesium containing agent below surface of iron alloy melt

Current as of: June, 1999
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420 /   HD   ALLOYS OR METALLIC COMPOSITIONS

8  DF  FERROUS (I.E., IRON BASE) {24}
9  DF  .~ 1.7 percent or more carbon containing {2}
13  DF  .~.~ 2.7 percent or more carbon equivalent containing (i.e., cast iron) {7}
18  DF  .~.~.~ Processes of adding magnesium {7}
21.~.~.~.~ Mechanically plunging magnesium containing agent below surface of iron alloy melt

DEFINITION

Classification: 420/21

Mechanically plunging magnesium containing agent below surface of iron alloy melt:

(under subclass 18) Processes wherein the magnesium containing agent is mechanically forced below the surface of the iron alloy melt, e.g., by employing a plunging bell.