UNIT FOR HEAT TREATMENT OF LARGE ROLLS Russian patent published in 1995 - IPC

FIELD: units for heat treatment of large rolls. SUBSTANCE: unit has heating chamber in form of detachable dome and stationary lower portion where burners are arranged, additional dome section, sector inductor whose coils are secured on inner surface for frontal motion in radial direction towards roll, scrapers secured on surface, mechanism for motion of surface along axis of roll and for turning in plane perpendicular to axis of rotation of roll. Unit is also provided with drive for rotation of roll, roller rests on which journal of roll is mounted. Roll barrel is placed in heating chamber. EFFECT: enhanced efficiency of heat treatment due to simultaneous increase of impact strength and hardness in surface layer of roll. 5 cl, 4 dwg