To obtain a surface reforming heat treatment device for metallic material with good operation efficiency and productivity.
In this surface reforming heat treatment device for metallic material, openable and closable openings 1a and 1b are provided on both side surfaces of a heat treatment furnace, a work 5 is carried into the heat treatment furnace by retrievers 4a and 4b provided out of the heat treatment furnace, and an atmospheric gas is fed into the heat treatment furnace and agitated by a stirring fan. The opening and closing doors 2a and 2b of the openings 1a and 1b have expansions deformed according to the deformation of the heat treatment furnace by temperature change. The upper wall of the heat treatment furnace for supporting the stirring fan has an expansion deformed according to the deformation of the heat treatment furnace by temperature change.
OGIWARA KOICHI
TANNO YOSHIYUKI
Kiichi Sawaki
Next Patent: OUTDOOR UNIT FOR AIR CONDITIONING SYSTEM