High-strength high-temperature-resistant furnace bottom roller

Abstract

The invention discloses a high-strength high-temperature-resistant furnace bottom roller; the high-strength high-temperature-resistant furnace bottom roller comprises a roll cylinder, a roll neck and a roll head; the roll head is arranged at two ends of the roll cylinder; the roll neck is fixedly connected between the roll cylinder and the roll head; the roll head is inserted into the end part of the roll neck, so that the roll head and the roll neck are matched and fixedly connected; a clapboard is arranged at the joint of the roll cylinder and the roll neck; a closed cavity is formed among the clapboard, the end part of the roll head and the inner hole of the roll neck; a thermal insulation material is filled in the cavity, so that a thermal insulation structure is formed; the high-strength high-temperature-resistant furnace bottom roller disclosed by the invention is further characterized in that two locating pin shafts penetrating through the matched part of the roll head and the roll neck in the radial direction are arranged at the matched part of the roll head and the roll neck; a part of one locating pin shaft passes through another locating pin shaft; and a high-temperature-resistant oxidized wear-resistant coating is arranged on the outer wall of the roll cylinder. According to the invention, the capability of transferring heat from the roll cylinder to a roll shaft is low; the working conditions of a bearing are obviously improved; the connection part of the roll head and the roll neck is high in strength; and the high-strength high-temperature-resistant furnace bottom roller is high-temperature-resistant, oxidization-resistant and wear-resistant.

Description

Technical field [0001] The invention relates to heat treatment equipment, in particular to a furnace bottom roller. Background technique [0002] The hearth roller is installed in the solution heat treatment furnace for conveying the heat-treated steel slab to realize the continuous heat treatment process. The hearth roller in the high-temperature section operates in the temperature range of 1000 to 1200°C and in an oxidizing environment heated by an open flame , These hearth rollers must be able to maintain the ability to transfer high temperature slabs in long-term continuous work. The prior art hearth roller includes a roller, a roll neck, and a roller head. The roller head is arranged at both ends of the roller, and the roll neck is fixedly connected between the roller and the roller head. The hearth roller generates a lot of heat during the working process. Many of these heat are transferred to the roll head, causing the temperature of the bearing on the roll head to rise a...

AI Technical Summary

Problems solved by technology

The hearth roll of the prior art 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 operation of the hearth roll. Much of this heat is transferred to the roll head, causing the temperature of the bearing on the roll head to rise and deteriorating the working conditions of the bearing

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