HardLine is EFD Induction’s family of heat treatment systems for surface and through hardening, comprising a complete range of stationary systems for all types of workpieces requiring hardening, tempering and annealing.
These systems cover every type of crankshaft (marine, compressor, car, truck, etc.) and production volume. Our systems include robot-loaded machines, and drum and single-station models for large crankshafts. We also offer walking beam and chain conveyor machines with a capacity of 1-4 stations.