Strip Casting

Abstract

The invention relates to a process and a device for strip casting using a travelling mould which is cooled by a liquid coolant. The invention is characterised in that the coolant is liquid metal or ionic liquid. Preferably, the coolant flows with turbulent flow through the cooling device attributed to the travelling mould.

1 . A process for strip casting using a travelling mould which is cooled by a liquid coolant, wherein the coolant is liquid metal or ionic liquid. 
   
   
       2 . The process according to  claim 1 , wherein the coolant is chosen from the group consisting of lead, tin, bismuth, gallium, indium, or alloys thereof. 
   
   
       3 . The process according to  claim 1 , wherein the coolant has, in degrees Celsius, a melting point which is lower or equal 60% of the melting point of the casting material in degrees Celsius. 
   
   
       4 . The process according to  claim 1 , wherein the direction of the flow of the coolant in the area of the travelling mould is counter to the direction of the movement of the cast strip. 
   
   
       5 . The process according to  claim 1 , wherein the flow of the coolant in vicinity of the surface to be cooled is a turbulent flow. 
   
   
       6 . The process according to  claim 5 , wherein the flow of the coolant in vicinity of the surface to be cooled is highly turbulent. 
   
   
       7 . A cooling device for a process according to any one of the  claims 1  to  6 , the cooling device having a storage tank ( 12 ) for the coolant, a heating device and a pump ( 13 ), with pipes ( 2 ) which connect the storage tank ( 12 ) with the cooling device ( 4 ) for indirectly cooling a strip of cast metal and a heat exchanger ( 14 ) which is located in a backflow pipe ( 6 ) transporting the coolant from the cooling device to the storage tank. 
   
   
       8 . The device according to  claim 7 , wherein the cooling device ( 4 ) includes one or more features configured to create a turbulent flow of coolant and/or create a predetermined flow pattern of coolant in a vicinity of a surface to be cooled. 
   
   
       9 . The device according to  claim 8 , wherein the features include one or more of wing-shaped internal structures, changes in a size and/or form of a cross section of a fluid channel, and deviation plates.