Preparation of tundishes
AssigneeAML Arbetsmiljolaboratoriet
InventorsGunnar Broms, Par Lindahl
Life of this patent
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Abstract
A method of preparing tundishes for use for continuously casting steel, whereby the cavity of the tundish is provided with a lining of performed slabs of refractory material in which the preparation is carried out using a preparation unit which comprises a lifting device supporting a manually moveable handling tool for the slabs, which transports them individually from a stack of slabs stored within reach of the handling tool and places them into their respective positions against the bottom, end or side walls of the inner cavity of a tundish using the necessary turning, tilting and movement in the vertical or horizontal plane for each slab during its transportation from the slab stack to its required position.
Claims21
Apparatus by lining the tundish with preformed slabs of refractory material, said apparatus comprising:
- a lift arm;
- a handling tool the handling tool including a gripping device for gripping
- a bearing housing mounted to a free end of said lift arm;
- means for mounting said gripping device to said bearing housing so that said gripping device is rotatable about a vertical axis with respect to said bearing housing;
- said lift arm comprising means for moving said gripping device both horizontally and vertically in positioning slabs within a tundish;
- and
- said means for mounting said gripping device to said bearing housing comprising an arm member mounted for pivotal movement about a horizontal axis.
Apparatus for preparing a tundish for use for continuous casting of molten metal, by lining the tundish with preformed slabs of refractory material, said apparatus comprising:
- a lift arm;
- a handling tool for handling preformed slabs to be used in lining a tundish, the handling tool including a gripping device for gripping the slabs;
- a bearing housing mounted to a free end of said lift arm;
- means for mounting said gripping device to said bearing housing so that said gripping device is rotatable about a vertical axis with respect to said bearing housing;
- said lift arm comprising means for moving said gripping device both horizontally and vertically in positioning slabs within a tundish;
- and
- a control device operatively connected to said gripping device for effecting rotation thereof about said vertical axis, said control device comprising a ring of relatively large diameter concentric with said vertical axis, and positioned so as to effectively increase the reach of the operator with the handling tool within the horizontal dimensions of a tundish.
Apparatus for preparing a tundish for use for continuous casting of molten metal, by lining the tundish with preformed slabs of refractory material, said apparatus comprising:
- a lift arm;
- a handling tool for handling preformed slabs to be used in lining a tundish, the handling tool including a gripping device for gripping the slabs;
- said handling tool operatively connected to said lift arm so that said lift arm comprises means for moving said gripping device both horizontally and vertically in positioning slabs within a tundish;
- and
- means for effecting dust free application of sand onto the bottom of a tundish before positioning of the slabs on the bottom, and for applying sand in a gap behind the slabs when they are placed against end and side walls of a tundish cavity.
Apparatus for preparing a tundish for use for continuous casting of molten metal, by lining the tundish with preformed slabs of refractory material, said apparatus comprising:
- a lift arm;
- a handling tool for handling preformed slabs to be used in lining a tundish, the handling tool including a gripping device for gripping the slabs;
- said handling tool operatively connected to said lift arm so that said lift arm comprises means for moving said gripping device both horizontally and vertically in positioning slabs within a tundish;
- and
- means for applying refractory cement to the joints between slabs in a tundish, said means comprising a cement applicator for manual movement to access all inner dimensions of a tundish which is mounted in operative association with said gripping device, said cement applicator having valve means for controlling the passage of cement therethrough into the joints between slabs.
Dependencies are inferred from the claim text.