The root cause and solution of shell deformation in annealing furnaces

In cases of severe deformation, local heating should be carried out in the deformation area. Before welding, the oil stains, dirt, and oxide skin at the weld seam must be cleaned and corrected by jacks, clamps, bolts, etc. In cases of small deformation, the treatment method is to directly correct it in the cold state.
The causes of local deformation (local depression or protrusion) of the annealing furnace shell include three aspects: local overheating of the furnace shell, stress concentration in the weld area of the furnace shell, external or internal pressure, and elimination methods for local deformation (local depression or protrusion) of the annealing furnace shell of a box electric furnace:
When the annealing furnace shell is not deformed much and there are no cracks, the box furnace welding seam should be polished, and the welding seam should be continuously flat using straightening. The material of the subsidy department should be the same as the base metal.
When the deformation area of the annealing furnace shell is hot or there are cracks spreading, the tube furnace uses gas cutting to cut off the metal surface with cracks, and repairs a piece at the cut. Coal repair method can be used, and the repair piece should be flush with the base metal without overlapping parts.

The above content is organized by Superb heater Company, super heater. Mainly professional production: industrial heating elements, temperature measuring elements, production equipment, accessories, and raw materials such as tubular heaters, tubular heaters, belt heaters, ceramic heaters, silicone rubber heaters, thermocouples, etc.

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