Patent ID: 7192508
Filing Date: 2007-03-20
Classification: C25C,Y10T

Abstract:
1. Device ( 1 ) to conduct current to or from the electrodes of an electrolysis cell, which device provides both increased conduction of heat away from the electrolysis bath of the electrolysis cell and reduced electrical voltage drop, and thereby possibility for electrolysis at increased current/current density and reduced voltage drop, which device in the direction towards the electrolysis cell comprises three types of segments; at least one outer segment ( 2 ) joined with at least one intermediate segment ( 3 ) which again is joined with at least one inner segment ( 4 ); where the outer segment ( 2 ) has at least one end ( 5 ) which is to extend out from an electrode body ( 6 ) towards an outer current circuit, and the outer segment is coupled to at least one intermediate segment ( 3 ) which again is coupled to at least one inner segment with at least one section ( 4 ) or end ( 7 ) in the electrode body; where the inner segment ( 4 ) is manufactured from steel, the intermediate segment is manufactured with a steel lining ( 8 ) over an inner core of a material ( 9 ) with better electrical and thermal conductivity than steel, and the outer segment is manufactured from a material ( 9 ) with better electrical and thermal conductivity than steel, and the device or the components thereof has optionally a coating applied, and the device has optionally expansion joints or flexible segments to handle temperature induced movements, characterized in that the material ( the intermediate segment with core of the material ( the joining between the inner segment and the intermediate segment is by means of a friction weld or induction weld between the inner core of the intermediate segment and a steel insert with dimensions corresponding to said inner core, in that the steel insert in one end is friction welded or induction welded to the inner core of the intermediate section (