Method of repairing defects in cast iron workpieces, and a method of connecting cast iron workpieces
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United States of America Patent
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Jan 17, 2017
Grant Date -
Aug 13, 2015
app pub date -
Dec 15, 2011
filing date -
Dec 15, 2011
priority date (Note) -
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Abstract
A method of repairing defect in cast iron workpiece, including: machining the workpiece in the area of the defect to remove the defective material and form a chamber opening at a surface of the workpiece; anchoring a receptacle to the workpiece above the chamber (2), the receptacle is provided with an orifice in communication with the chamber; adding molten iron (4) into the receptacle so that it at least part of it flows into the chamber; adding slagging agent (5) into the receptacle; heating the slagging agent and the molten iron with an electrode (6); adding nodulizing agent into the molten iron so as to segregate graphite; and allowing the molten iron and the workpiece to cool down slowly. The above-described technique also has applicability for connecting two cast iron workpieces (11,12) together.
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International Classification(s)
- B23P:OTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVE....
- B23K:SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLA....
- B22D:CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY ....
- F01D:NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g....
- C21C:PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE....
- C22C:ALLOYS
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