Tundish nozzle assembly block with elevated and slanted opening
AssigneeMagneco/Metrel, Inc.
InventorMadjid Soofi
Life of this patent
Estimating the term…
Abstract
A two-piece tundish nozzle assembly block is provided for the drain regions of tundish vessels. The two-piece assembly block includes a lower main block firmly mounted in the refractory lining of the tundish, and a selectively removable top sleeve which, together with the refractory lining, protects the lower main block from direct exposure to molten iron or steel. The top sleeve is directly exposed to molten iron or steel passing into the drain. The top sleeve is not strongly bonded in place, and can be easily removed and replaced when worn or damaged. The top sleeve further includes a ramp for channeling molten metal into the drain, and a blocking wall for preventing heavy inclusions from entering the drain.
Claims22
A tundish vessel, comprising:
- a floor, one or more walls, a pouring region, and at least one drain region;
- and
- a nozzle assembly block in the drain region, the nozzle assembly block including:
- a lower main block including an inner wall defining a hollow portion, an outer wall, and top and bottom walls extending between the inner and outer walls;
- and
- a selectively removable top sleeve including a lateral extension which covers the top wall of the lower main block, a vertical extension intersecting the lateral extension which covers the inner wall of the lower main block, and an inner hollow portion defined by the vertical extension for receiving a nozzle;
- the lateral extension including an upper surface which is at least partially higher than the tundish floor in the drain region;
- wherein at least part of the upper surface of the lateral extension has an elevation about 1-5 inches higher than the tundish floor in the drain region.
A tundish vessel, comprising:
- a floor, one or more walls, a pouring region, and at least one drain region;
- a nozzle assembly block in the drain region, the nozzle assembly block including:
- a lower main block including an inner wall defining a hollow portion, an outer wall, and top and bottom walls extending between the inner and outer walls;
- and
- a selectively removable top sleeve including a lateral extension above the top wall of the lower main block, a vertical extension intersecting the lateral extension which covers the inner wall of the lower main block, and an inner hollow portion defined by the vertical extension for receiving a nozzle;
- and
- a drain nozzle at least partially inside the inner hollow portion of the top sleeve and separate from the lower main block;
- the lateral extension including a ramped surface which extends from a highest elevation away from the drain nozzle to a lowest elevation closer to the drain nozzle.
In a tundish vessel including an inner refractory lining, an outer steel shell, one or more walls, a floor, a pouring region and at least one drain opening, the improvement comprising:
- a depression formed in the refractory lining surrounding the drain opening, the depression having a diameter larger than the drain opening;
- a lower main block mounted in the depression, the lower main block including an inner wall defining a hollow portion, an outer wall, and top and bottom surfaces connecting the inner and outer walls;
- a selectively removable top sleeve which covers the inner wall and the top surface joining the inner and outer walls, the top sleeve defining an inner hollow portion for receiving a drain nozzle;
- and
- a tundish drain nozzle commencing in the inner hollow portion and extending through the steel shell;
- the top sleeve further including a slanted ramp for channeling molten steel into the drain nozzle, and a blocking wall for preventing heavy inclusions from reaching the drain nozzle.
A tundish vessel, comprising:
- a floor, one or more walls, a pouring region, and at least one drain region;
- and
- a nozzle assembly block in the drain region, the nozzle assembly block including:
- a lower main block including an inner wall defining a hollow portion, an outer wall, and top and bottom walls extending between the inner and outer walls;
- and
- a selectively removable top sleeve including a lateral extension which covers the top wall of the lower main block, a vertical extension intersecting the lateral extension which covers the inner wall of the lower main block, and an inner hollow portion defined by the vertical extension for receiving a nozzle;
- the lateral extension including an upper surface which is at least partially higher than the tundish floor in the drain region and comprising a ramp having an angle of about 15-60 degrees from the horizontal.
Dependencies are inferred from the claim text.