Continuous electric furnace for the physico-chemical treatment of metal articles

摘要

The invention applies to the vacuum and gaseous-atmosphere thermal treatment furnace, preferably with electric heating. The vertical advance chamber 5 of the articles 6 communicates with the treatment chamber 4 whose hearth 16 is equipped with a vacuum valve 17 which separates the chamber 4 from the other chambers 2, 3, 5 of the furnace during the process of treatment of the articles 6. Application to case hardening under vacuum in various branches of mechanical construction. <IMAGE>