Energy-saving type high temperature resistant hearth roll

Abstract

The invention discloses an energy-saving type high temperature resistant hearth roll, which includes a roller, a casing, and roll shafts fixedly connected in two end holes of the roller. The casing runs through the roll shafts and the roller cavity axially, and the two ends are fixedly connected in the inner holes of the roll shafts; the cavity between the casing outer wall and the roller cavity is filled with a thermal insulation material. The further improvement lies in that: the thermal insulation material is aluminum silicate fiber. The outer wall of the roller is provided with a high temperature oxidation resistant and wearproof coating. The energy-saving type high temperature resistant hearth roll provided by the invention significantly reduces heat transfer from the roller to the casing and energy loss, and has the advantages of 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 rolls are installed in the solution heat treatment furnace to transport the steel slabs for heat treatment, so the hearth rolls work at high temperature. Hearth rollers include rollers and roller shafts fixedly connected to the holes at both ends of the rollers. Hearth rollers generate a lot of heat during operation, and many of these heats are transferred to the roller shafts, causing the temperature of the bearings on the roller shafts to rise. , Bearings in harsh working conditions may cause bearing failure. For this reason, the hearth roller is provided with a casing axially penetrating the roller shaft and the roller, and the cooling medium passes through the casing to reduce the temperature on the roller shaft. However, there is still a large amount of heat transferred from the inner cavity of the roller to the casing, w...

AI Technical Summary

Problems solved by technology

Hearth rollers include rollers and roller shafts fixedly connected to the holes at both ends of the rollers. Hearth rollers generate a lot of heat during operation, and many of these heats are transferred to the roller shafts, causing the temperature of the bearings on the roller shafts to rise. , bearings in severe working conditions may cause bearing failure

For this reason, the hearth roller is provided with a casing axially penetrating the roller shaft and the roller, and the cooling medium passes through the casing to reduce the temperature on the roller shaft. However, there is still a large amount of heat transferred from the inner cavity of the roller to the sleeve, which is taken away by the medium in the sleeve, resulting in a waste of energy

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