The job is placed in various shape of coil as per application and when high frequency current passed through coil the induced current flows in job and as per joules law Q = I2 x R x T the heat is generated ( I = Current in job, R = Resi. of job T = Time in sec. ) Hence the job heats up quickly. As per the application job is quenched in proper quenching media for HARDENING, cooled naturally for ANNEALING, the flux & brazing alloy applied for BRAZING.
