High-strength high-temperature-resistant furnace bottom roller

Abstract

The invention discloses a high-strength and high-temperature-resistant furnace bottom roller, which comprises a roller, a roller neck and a roller head; the roller head is arranged at both ends of the roller, and the roller neck is fixedly connected between the roller and the roller head; the roller head is inserted into the roller The end of the neck forms a fit and a fixed connection; the roll neck is inserted into the spigot hole at the end of the roll to form a fit and a fixed connection; the joint between the roll and the roll neck is provided with a partition; the cavity in the roll neck is provided with heat insulation Structure: there is more than one anti-loosening screw at the connection between the spigot hole at the end of the roller and the end of the roll neck, the anti-loosening screw penetrates radially, and the threaded connection is inserted into the wall of the spigot hole at the end of the roller; further The improvement lies in that: the outer wall of the roller is provided with a high-temperature oxidation-resistant and wear-resistant coating; the anti-loosening screws are evenly distributed on the circumference of the connection between the notch hole at the end of the roller and the end of the roller neck. The invention has low heat transfer capability from the roller to the roller shaft, and the working condition of the bearing is obviously improved; the joint structure of the roller head and the roller neck has high strength, high disassembly efficiency; high temperature resistance, oxidation resistance and wear resistance.

Description

technical field [0001] The invention relates to heat treatment equipment, in particular to a hearth roller. Background technique [0002] The hearth rollers are installed in the solid solution heat treatment furnace to transport the heat-treated steel slabs to realize the continuous heat treatment process. The hearth rollers in the high-temperature section operate in the temperature range of 1000-1200°C and in an oxidizing environment heated by an open flame , these hearth rollers must be able to maintain the ability to transport high-temperature slabs during long-term continuous work. The hearth roll includes a roller, a roll neck, and a roll head. The roll head is arranged at both ends of the roll, and the roll neck is fixedly connected between the roll and the roll head. A large amount of heat is generated during the working process of the hearth roll. A lot of it is transferred to the roller head, causing the temperature of the bearing on the roller head to rise and det...

AI Technical Summary

Problems solved by technology

The main defect of this kind of hearth roll is that if the hearth roll needs to be repaired, the roll neck and roll head must be disassembled, and the positioning pin shaft needs to be pulled out. Since the positioning pin shaft is pressed in through interference fit, the It is time-consuming and labor-intensive to pull out the positioning pin, resulting in time-consuming and labor-intensive disassembly of the roll neck and roll head

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