GEORGE SHINOPULOS
Engineering in Burlington, MA

4736789, Apr 12, 1988

Mar 19, 1986

6/841690

George Shinopulos - Burlington MA
M. Ronald Randlett - Burlington MA
Terry F. Bower - Needham MA

Kennecott Corporation - Cleveland OH

B22D 1104

164416

An oscillating cooled mold assembly for the continuous, high-speed casting of metallic strands, especially upcasting strands of copper alloys such as brass, has a hollow die in fluid communication with a melt typically held in a casting furnace. A coolerbody surrounds the die in a tight-fitting relationship to form a solidification front in the melt as it advances through the casting zone of the die. During assembly, the die is preferably slip fit in the coolerbody. A shoulder on the die engages a lower face of the coolerbody and, together with a small irregularity on the upper coolerbody wall, prevents any axial movement of the die before it thermally expands against the coolerbody. An insulating member located between the die and the coolerbody and below the solidification front fixes the location of the front within a dimensionally uniform area of the die. The insulating member is preferably a ring of a material such as cast silica that has a low coefficient of thermal expansion, a low porosity, and is highly resistant to thermal shock.

4172375, Oct 30, 1979

Apr 28, 1978

5/901185

Calvin Rushforth - Andover MA
George Shinopulos - Burlington MA
M. Ronald Randlett - Burlington MA
Terry F. Bower - Needham MA

Kennecott Copper Corporation - New York NY

B21F 310, B21F 2100, B21C 4702

72137

Apparatus for guiding and coiling one or more metallic strands that are continuously advancing along their length from a casting apparatus. A coiling apparatus has an open-top coil-collecting basket with concentric, generally cylindrical inner and outer walls. A rotating cone is disposed over the inner wall. At least one boom and a set of opposed rolls and associated fairing assemblies mounted on the boom guide the strand from the casting apparatus to the coiling apparatus. An exit end of the boom directs each strand vertically downward onto the cone of one coiler. Friction between the strand and the cone lays the strand in the basket in horizontal wraps without a reversal of the laying direction or kinks. The boom exit end mounts a straightener that includes a pair of hydraulically-actuated slide bars that are orthogonal to each other and to the strand. The slide bars produce a cyclic deflection of the strand about the center of the cone to form a uniform, non-tangled coil.

4612971, Sep 23, 1986

Mar 5, 1985

6/708115

Terry F. Bower - Needham MA
M. Ronald Randlett - Burlington MA
George Shinopulos - Burlington MA

Kennecott Corporation - Stamford CT

B22D 1112, B21B 144, B21B 1322

164454

Disclosed is an apparatus and method for the integrated, continuous, high speed manufacture of metallic strip, especially brass, from a melt. The apparatus comprises a chilled casting mold in liquid communication with a melt, means for drawing a rod through the mold at a constant rate and means for oscillating the mold in a pattern of forward and reverse strokes with respect to the direction of travel of the rod. Conversion of the rod to strip comprises flattening in a hot rolling mill, and quenching. In accordance with known procedures, the produced strip can be further reduced in cross section in one or more cold rolling mill or other hot rolling mills if desired.

4232727, Nov 11, 1980

Nov 1, 1978

5/956793

Terry F. Bower - Needham MA
M. Ronald Randlett - Burlington MA
George Shinopulos - Burlington MA

Kennecott Copper Corporation - New York NY

B22D 1112, B21B 144, B21B 1322

164 76

Disclosed is apparatus and method for integrated, continuous, high speed manufacture of metallic strip, especially brass, from a melt. The apparatus comprises a chilled casting mold in liquid communication with a melt and means for drawing a rod through the mold in a pattern of forward and reverse strokes. After emergence from the mold, the rod speed is regulated to a substantially constant value before conversion into strip. In this embodiment, the casting mold is stationary; the rod is drawn through the mold by driven rolls programmed to create the desired forward and reverse motion of the rod through the mold. Creating substantially constant speed is accomplished by allowing slack to develop through the lateral deflection of the rod. In another embodiment, the casting mold oscillates as the rod is withdrawn at a substantially constant speed so further rod motion regulation is unnecessary. Conversion of the rod to strip comprises flattening in a hot rolling mill, and quenching.

4307770, Dec 29, 1981

Jul 13, 1979

6/057411

George Shinopulos - Burlington MA
M. Ronald Randlett - Burlington MA
Terry F. Bower - Needham MA

Kennecott Corporation - Stamford CT

B22D 1100

164416

A cooled mold assembly for the continuous, high-speed casting of metallic strands, especially upcasting strands of copper alloys such as brass, has a hollow die in fluid communication with a melt typically held in a casting furnace. A coolerbody surrounds the die in a tight-fitting relationship to form a solidification front in the melt as it advances through the casting zone of the die. The die is preferably slip fit in the coolerbody. A shoulder on the die engages a lower face of the coolerbody and together with a small irregularity on the upper coolerbody wall prevents an axial movement of the die before it thermally expands against the coolerbody. An insulating member located between the die and the coolerbody and below the solidification front fixes the location of that front within a dimensionally uniform area of the die. The insulating member is preferably a ring of a material such as cast silica that has a low coefficient of thermal expansion, a low porosity, and is highly resistant to thermal shock. The insulating member also preferably creates a steep longitudinal temperature gradient at its upper end to promote a high cooling rate over a relatively short casting zone.

4211270, Jul 8, 1980

Jul 28, 1978

5/928881

George Shinopulos - Burlington MA
M. Ronald Randlett - Burlington MA
Terry F. Bower - Needham MA

Kennecott Copper Corporation - New York NY

B22D 1100

164 83

A cooled mold assembly for the continuous, high-speed casting of metallic strands, especially upcasting strands of copper alloys such as brass, has a hollow die in fluid communication with a melt typically held in a casting furnace. A coolerbody surrounds the die in a tight-fitting relationship to form a solidification front in the melt as it advances through the casting zone of the die. The die is preferably slip fit in the coolerbody. A shoulder on the die engages a lower face of the coolerbody and together with a small irregularity on the upper coolerbody wall prevents an axial movement of the die before it thermally expands against the coolerbody. An insulating member located between the die and the coolerbody and below the solidification front fixes the location of that front within a dimensionally uniform area of the die. The insulating member is preferably a ring of a material such as cast silica that has a low coefficient of thermal expansion, a low porosity, and is highly resistant to thermal shock. The insulating member also preferably creates a steep longitudinal temperature gradient at its upper end to promote a high cooling rate over a relatively short casting zone.

5238667, Aug 24, 1993

Jan 13, 1992

7/821327

Eugene N. Pollock - Brookline MA
David S. Schlier - Gardner MA
George Shinopulos - Burlington MA

Nuclear Metals, Inc. - Concord MA

C01G 4306, G21C 2100

423259

A method of producing a high density, low hygroscopic green salt from hydrated green salt includes heating a charge of hydrated green salt in a nonreactive atmosphere to a first temperature above the boiling point of water to drive off free water; heating the charge in a nonreactive atmosphere to a second temperature higher than the first temperature to drive off the water of crystallization present in the green salt; heating the charge in a nonreactive atmosphere to a third temperature higher than the second temperature to induce anhygroscopicity of the charge; and cooling the charge to approximately 400. degree. F. or less in a protective atmosphere to prevent atmospheric oxidation and hydrolysis.

4349145, Sep 14, 1982

Dec 3, 1980

6/212595

George Shinopulos - Burlington MA
M. Ronald Randlett - Burlington MA
Terry F. Bower - Needham MA

Kennecott Corporation - Stamford CT

B23K 104, B23K 120

228208

A method for brazing a surface of an age hardened chrome copper member to a surface of a stainless steel member is disclosed. The process includes plating surfaces with copper, applying a brazed material of a copper/gold alloy between said surfaces, applying a brazing paste between said surfaces and rapidly heating the materials to fuse them together in a protected atmosphere. A particular disclosed embodiment of the method comprises the brazing of the cooler body assembly of a continuous casting die for casting copper strands.

4519118, May 28, 1985

Aug 17, 1984

6/642727

George Shinopulos - Burlington MA
M. Ronald Randlett - Bainbridge OH
Terry F. Bower - Hudson OH

Kennecott Corporation - Cleveland OH

A01B 2900

291215

A rolling mill, particularly one capable of forming a hot, continuously cast metallic strand into a strip with a large bite and with one pass per mill stand, uses only two small diameter rolls per stand, each mounted for rotation in a pair of chock blocks and each having a comparatively narrow, enlarged diameter working portion. The outer surface of the working portion is profiled to maintain the product centered on the rolls and to accommodate for thermal expansion. The roll also includes an internal, longitudinally extending passage that receives a flow of coolant to control its temperature.

5084253, Jan 28, 1992

Nov 13, 1989

7/455975

Eugene N. Pollock - Brookline MA
David S. Schlier - Gardner MA
George Shinopulos - Burlington MA

Nuclear Metals, Inc. - Concord MA

C01G 3300, C22B 3420

423 65

A method of removing niobium from a uranium-niobium alloy includes dissolving the uranium-niobium alloy metal pieces in a first aqueous solution containing an acid selected from a group consisting of HCl and H. sub. 2 SO. sub. 4 and a fluoboric acid as a catalyst to provide a second aqueous solution which includes uranium (U. sup. +4), acid radical ions, the acids and insolubles including uranium oxides and niobium oxides; adding nitric acid to the insolubles to complete the oxidation of the niobium oxides to yield niobic acid and further solubilizing thr uranium oxide; and separating the niobic acid, nitric acid and solubilized uranium oxides.