Corrosion resistant and high wear resistant sink roll

Abstract

The invention discloses a corrosion resistant and high wear resistant sink roll, which includes a cylindrical roll body and roll shafts connected to both ends of the roll body. The roll body includes an alloy sleeve, a metal ceramic sleeve and a hole sealing agent layer that are radially distributed from the inside out. The alloy sleeve is internally provided with a lead core. The further improvement lies in that the roll body surface is provided with a spiral groove, the bottom of which is in an arc shape. The sink roll provided by the invention has good corrosion resistance; change of gravity offsets part of tension, so that the support counterforce is diminished, the working area is expanded, damage to a sliding surface of the sink roll is significantly reduced, the wear resistance of the sink roll is significantly improved, and the production cost is reduced; and aluminum-zinc-iron alloy elements on the sink roll surface can be conveyed out through a spiral groove on the roll body surface, thus solving the nodulation problem on the roll surface and improving the product quality.

Description

Technical field [0001] The invention relates to a sinking roller on a hot-dip galvanizing line. Background technique [0002] The sinking roller is one of the important equipment on the hot-dip galvanizing line. The sinking roller is corroded by the zinc liquid during the production process, and at the same time, under the action of the strip steel, it is subject to greater friction, so it is easy to sink the roller shaft. The sliding part of the neck is worn and damaged. The damage of the sunken roller is mainly due to the damage to the sliding surface by the reaction force of the support and the dynamic friction torque and the corrosion of the zinc liquid. The prior art submerged roller includes a cylindrical roller body and a roller shaft connected to both ends of the roller body. The roller body includes a matrix, an alloy sleeve, a cermet sleeve, and a sealing agent layer distributed in order from the inside to the outside in the radial direction. The structure of the sunk...

AI Technical Summary

Problems solved by technology

The sinking roller in the prior art includes a cylindrical roller body and a roller shaft connected to both ends of the roller body. The roller body includes a matrix, an alloy sleeve, a cermet sleeve, and a sealing agent layer distributed in sequence from the inside to the outside in the radial direction. Due to the light weight of the sinking roller, its gravity cannot offset part of the tension, so the support reaction force generated is relatively large, and the damage to the sliding surface of the sinking roller is large. The wear resistance of the sinking roller is poor, and it needs to be replaced frequently, which increases the production cost.

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