Rotary Retort Continuous Hardening & Tempering Plants furnace for mass produced parts, especially spherical and cylindrical that tend to roll Process Capabilities Annealing (non ferrous) Through Hardening Shallow Case Hardening Equipment Features Electric or gas heated Auto loading Rotary prewash & postwash Atmosphere lock at inlet Cast alloy rotary retort Corrugated strip or radiant tube heating Oil or polymer quench Mesh belt or magnetic quench conveyor Rotary 2 pass tempering with fan