ECONO-TECHNICAL ANALYSIS OF ROLLER-HEARTH HEAT TREATMENT FURNACE WITH NITROGEN-BASED ATMOSPHERE

Base on analysis of main problems concerning heat treatment of hi-pressure boiler pipes with the original chamber type carriage hearth furnace,the co-authors make a proposal that a new roller-hearth heat tresatment furnace with nitrogen-based atmosphere be added to match the increased production of the hi-pressure boiler pipes. For this purpose,detailed econo-technical analysis concerning the said furnace is made.