Process method for coating and curing metal pipeline by means of medium frequency heating

The invention discloses a process method for coating and curing a metal pipeline by means of medium frequency heating. The process method disclosed by the invention mainly comprises the following steps: slowly feeding a metal pipeline coated with an anticorrosive coating in an early stage to a medium frequency induction coil through front section transfer equipment in a constant temperature state at a uniform speed for being heated; when the metal pipeline is fed to the medium frequency induction coil, connecting a medium frequency power supply, generating an alternating magnetic field in the medium frequency induction coil to form a strong magnetic eddy which heats the metal pipeline; and precisely adjusting the heating temperature of the medium frequency induction coil according to the demand of the curing temperature of the anticorrosive coating of the pipeline. The process method disclosed by the invention fundamentally solves the problems that in the metal pipeline coating and curing link, the heating ti