Adiabatic Roll

Abstract

The object of this invention is to fit heat-resistant rings and disks around a metal tub shaft without welding so as to assure excellent deformability in accordance with thermal expansion and shrinkage due to changes in temperature. An adiabatic roll of this invention comprises a metal tub shaft ( 1 ). A plurality of heat-resistant rings ( 2 ) is axially arranged at predetermined intervals between a fixed flange ( 5 ) and a movable flange ( 6 ) provided on a circumference of the metal tub shaft ( 1 ). A plurality of disks ( 7 ) is arranged between the heat-resistant rings ( 2 ). The heat-resistant rings ( 2 ) and the disks ( 7 ) are fitted around the metal tub shaft ( 1 ) without welding.

1 . An adiabatic roll, comprising: 
 a metal tub shaft  1  which has a through hole  1 A for passing cooling water  20  therethrough;    a plurality of heat-resistant rings  2  which is fitted around the metal tub shaft  1  and axially arranged at predetermined intervals between a fixed flange  5  and a movable flange  6  provided on a circumference of the metal tub shaft  1 ; and    a plurality of disks  7  which is axially arranged between the heat-resistant rings  2 ,    wherein the heat-resistant rings and the disks  7  are fitted around the metal tub shaft  1  without welding.    
   
   
       2 . The adiabatic roll as set forth in  claim 1 , wherein each of the heat-resistant rings  2  comprises first and second heat-resistant ring parts  2 A,  2 B which have different diameters and are concentrically arranged on the same vertical axis.  
   
   
       3 . The adiabatic roll as set forth in  claim 2 , wherein the first and second heat-resistant ring parts  2 A,  2 B of the heat-resistant rings  2  are joined together by using a pair of ring-shaped plates  2 D and round head screws  2 E axially threaded into the ring-shaped plates  2 D at a joint  2 M thereof.  
   
   
       4 . The adiabatic roll as set forth in  claim 1 , wherein metal tub shaft key grooves  1   d  are formed on an external wall of the metal tub shaft  1 , key grooves  2 C are formed on internal walls of the heat-resistant rings  2 , and the heat-resistant rings  2  are fitted around the metal tub shaft  1  by keys  10  which engage with the metal tub shaft key grooves  1   d  and the key grooves  2 C.  
   
   
       5 . The adiabatic roll as set forth in  claim 2  or  3 , wherein metal tub shaft key grooves  1   d  are formed on an external wall of the metal tub shaft  1 , key grooves  2 C are formed on internal walls of the second heat-resistant ring parts  2 B having relatively smaller diameters among the heat-resistant rings  2 , and the second heat-resistant ring parts  2 B are fitted around the metal tub shaft  1  by keys  10  which engage with the metal tub shaft key grooves  1   d  and the key grooves  2 C.  
   
   
       6 . The adiabatic roll as set forth in  claim 1 , wherein the heat-resistant rings  2  are partially or entirely made of ceramic.  
   
   
       7 . The adiabatic roll as set forth in  claim 2  or  3 , wherein the external first heat-resistant ring part  2 A of each of the heat-resistant rings  2  is made of nickel•cobalt or stainless steel, and the internal second heat-resistant ring part  2 B of each of the heat-resistant rings  2  is made of ceramic.