Dual heat resistant steel furnace roller

Abstract

The invention discloses a double heat-resistant steel furnace roll, which comprises a furnace roll body, the roll body of the furnace roll body includes an inner layer roll body and an outer layer roll body, and an outer layer roll is arranged on the outer side of the inner layer roll body body, the interior of the inner roller body is filled with insulation materials; the roller body of the double heat-resistant steel furnace roller of the present invention adopts a double structure, the inner layer roller body is made of high-temperature heat-resistant alloy steel Cr2520Ni20, and the outer layer roller body is made of high-temperature heat-resistant alloy steel Cr28Ni48W5, there is a material difference when conducting heat, forming a heat-conducting heat-insulating structure, strengthening the load-bearing strength, slow heat transfer, reducing costs, and long service life. It is especially suitable for industrial furnace rollers for heat treatment of wide and thick plates; the present invention The surface of the outer roller body of the double heat-resistant steel furnace roller is provided with a nano-coating, which improves the ability of the furnace roller surface to resist nodulation and wear, and increases the mechanical load and high temperature resistance.

Description

technical field [0001] The invention relates to the technical field of furnace rolls, in particular to a double heat-resistant steel furnace roll. Background technique [0002] During the heating process of large workpieces, especially when the workpiece reaches 5-7 meters in length, the existing technology adopts the roller body of the furnace roller made of integral heat-resistant steel material, which is a one-layer design structure, and the roller body structure is very Thick, the disadvantage is that the cost is high, the processed product and the furnace roll are prone to bending and deformation during the heating process, and the bearing capacity is poor and the service life is not high. Contents of the invention [0003] The object of the present invention is to provide a double heat-resistant steel furnace roller with low cost, strong bearing capacity and long service life. [0004] The technical solution that realizes the object of the present invention is: [...

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Problems solved by technology

[0002] During the heating process of large workpieces, especially when the workpiece reaches 5-7 meters in length, the existing technology adopts the roller body of the furnace roller made of integral heat-resistant steel material, which is a one-layer design structure, and the roller body structure is very Thick, the disadvantage is that the cost is high, the processed product and the furnace roll are prone to bending and deformation during the heating process, and the bearing capacity is poor and the service life is not long

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