Water jacket on casting roller of twin roller caster

Abstract

A water jacket on a casting roller of a twin roller caster comprises a cylindrical water jacket body arranged on the casting roller. A circle of heat dissipation holes are respectively distributed at two ends of the water jacket body evenly along the axial direction. The two ends of the heat dissipation holes which are through holes are sealed by plugs. A row of annular grooves are distributed onthe inner wall of the water jacket body evenly. Annular isolating rings are also arranged in the annular grooves, which, for the convenience of installation, adopt separate structures, are composed of a plurality of curved plates, are inlaid in the annular grooves and are fixed by welding. A water inlet annular groove and a water outlet annular groove are respectively arranged at the two ends of the inner wall of the water jacket body, and are communicated with the heat dissipation holes to function as the water inlet and water outlet of the heat dissipation holes, so that the water inlet andoutlet annular grooves and the heat dissipation holes on the water jacket body form a cooling water circuit.

Description

technical field [0001] The invention relates to a twin-roll casting mill in the metallurgical iron and steel industry, in particular to a water jacket on the casting rolls of an ultra-short flow twin-roll casting mill. Background technique [0002] Casting rolls are the key components of the roll-type strip casting mill, because the casting rolls work in a state of intense cold and heat exchange when producing thin strip steel, traditional continuous casting equipment produces only a small amount of heat from the slab to the crystallizer, crystallization The device works in a relatively constant temperature transfer state. When the strip casting mill rotates, when the casting roll and the water jacket on the casting roll enter the solidification and crystallization zone, the temperature of the casting roll and the water jacket on the casting roll immersed in the molten steel in the molten pool rises rapidly. After the liquid solution pool, under the action of flowing coolin...

AI Technical Summary

Problems solved by technology

When the strip casting mill rotates, when the casting roll and the water jacket on the casting roll enter the solidification and crystallization zone, the temperature of the casting roll and the water jacket on the casting roll immersed in the molten steel in the molten pool rises rapidly. After the liquid solution pool, under the action of flowing cooling water, the temperature of the water jacket on the casting roll and the casting roll drops rapidly. As a result of the intense cold and heat exchange, the temperature gradient of the water jacket on the casting roll and the casting roll is large, and the work goes round and round. Great thermal stress is produced on the casting roll and the water jacket on the casting roll, and the periodic expansion and contraction deformation of the casting roll and the water jacket on the casting roll during work will bring about changes in the outer diameter of the water jacket on the casting roll, which will cause Influence on the quality of the rolled strip

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