Abstract: A method and apparatus for casting NF metal baths, particularly copper or copper alloys, to produce flat products at least 20 mm thick, ensure melt introduction into a pool while preventing gas pockets or impurities flushing into the melt of a casting mould. The melt continuously flows along a flow-off element from a tundish to a bath level of the mould, at a casting angle of up to 15° and a constant or decreasing rate, and is conducted below a pool surface of the mould without influencing flow rate. Vortexes generated by melt hitting the bath surface are prevented from extending within the mould by a cover surrounding a top surface of the flow-off element. Gaseous components produced when the melt flows, escape via a free space above the flow. Gravity determines a flow rate of the free melt flowing from tundish to molten bath of a revolving strip-casting mould.
Type:
Grant
Filed:
January 15, 2008
Date of Patent:
April 10, 2012
Assignee:
MKM Mansfelder Kupfer und Messing GmbH
Inventors:
Helmut Ullwer, Hendrik Busch, Lothar Schillinger
Abstract: A method for producing wide strips of copper is performed by pouring a molten liquid into a revolving wide strip mold via a distribution container and a pour nozzle. A surface of the molten metal in the distribution container is maintained at a constant level above the place where the pour nozzle is fixed in the distribution container in the range of 75 mm to 90 mm with respect to the level of the bath surface of the mold. The molten metal is guided by an ascending channel from the distribution container to the pour nozzle and is distributed within the pour nozzle symmetrically over a width corresponding to the width of the strip. Within the pour nozzle, the molten metal is guided through first and second flow restrictors and is separated into numerous small individual flows in a vertical direction over the entire strip width of the mold.
Type:
Grant
Filed:
December 8, 2007
Date of Patent:
March 15, 2011
Assignee:
MKM Mansfelder Kupfer und Messing GmbH
Inventors:
Michael Albrecht, Joachim Dauterstedt, Hans-Jürgen Schütt, Michael Starke
Abstract: A method for producing wide strips of copper is performed by pouring a molten liquid into a revolving wide strip mold via a distribution container and a pour nozzle. A surface of the molten metal in the distribution container is maintained at a constant level above the place where the pour nozzle is fixed in the distribution container in the range of 75 mm to 90 mm with respect to the level of the bath surface of the mold. The molten metal is guided by an ascending channel from the distribution container to the pour nozzle and is distributed within the pour nozzle symmetrically over a width corresponding to the width of the strip. Within the pour nozzle, the molten metal is guided through first and second flow restrictors and is separated into numerous small individual flows in a vertical direction over the entire strip width of the mold.
Type:
Application
Filed:
December 8, 2007
Publication date:
April 29, 2010
Applicant:
MKM MANSFELDER KUPFER UND MESSING GMBH
Inventors:
Michael Albrecht, Joachim Dauterstedt, Hans-Jürgen Schütt, Michael Starke
Abstract: A method and apparatus for casting NF metal baths, particularly copper or copper alloys, to produce flat products at least 20 mm thick, ensure melt introduction into a pool while preventing gas pockets or impurities flushing into the melt of a casting mould. The melt continuously flows along a flow-off element from a tundish to a bath level of the mould, at a casting angle of up to 15° and a constant or decreasing rate, and is conducted below a pool surface of the mould without influencing flow rate. Vortexes generated by melt hitting the bath surface are prevented from extending within the mould by a cover surrounding a top surface of the flow-off element. Gaseous components produced when the melt flows, escape via a free space above the flow. Gravity determines a flow rate of the free melt flowing from tundish to molten bath of a revolving strip-casting mould.
Type:
Application
Filed:
January 15, 2008
Publication date:
February 25, 2010
Applicant:
MKM MANSFELDER KUPFER UND MESSING GMBH
Inventors:
Helmut Ullwer, Hendrik Busch, Lothar Schillinger