Pipe electropolishing apparatus using an electrolyte heater and cooler

Abstract

A temperature handling subsystem (12) for a pipe electrochemical polishing system (10) has a chiller (46) and associated heat exchanger (44) for cooling the acid electrolyte (24) circulating through a pipe (28) while a cathode (14) is drawn therethrough for the purpose of electropolishing the interior of the pipe (24). A temperature control method (48) has a temperature low enough decision operation (58) wherein a temperature indicating control (38) is used to determine if the chiller (46) should be activated. The electrolyte (24) is pumped by an electrolyte pump from an electrolyte reservoir (22) containing a temperature indicating controller (38) for determining the temperature of the electrolyte (24) and further containing an electric heater (36) for heating the electrolyte (24), as necessary.

Dependencies are inferred from the claim text.