Analysis and Repair of Corrosion on the Inner Wall of the Quenching Tower of a DMTO Device Core Equipment
The reasons for the formation of pitting defects were analyzed on the inner wall of the quenching tower. To prevent pitting corrosion from happening again,the welding materials made of stainless steel are used to repair the defect area on the inner wall of the quenching tower by surfacing welding. After surfacing welding,the dehydrogenation heat treatment is immediately carried out to meet the production needs. And it has been proven through process tests that the surfacing welding repair method is feasible.