A side guide roller for super wear-resistant hot-rolled strip production line

Abstract

The invention discloses a super-wear-resisting side guide roller for a hot rolled strip production line. A core shaft comprises a bearing shaft and connecting shafts located at the upper end and the lower end of the bearing shaft, a support table is arranged at the bottom of the bearing shaft, an external thread is arranged at the top of the bearing shaft, and a compression nut is connected to the outer thread of the bearing shaft; a plurality of roll collars are sequentially and coaxially arranged at the position, between the compression nut and the support table, on the bearing shaft in an interference fit manner; a sunken structure is inwards arranged at the bottom of the bearing shaft and sinks from the edge of the bottom of the bearing shaft to the connecting shaft at the lower end of the core shaft; and each roll collar comprises a lining steel pipe and a ceramic layer, wherein the ceramic layer is arranged on the outer wall of the lining steel pipe in a pressure casting and sintering manner, and the ceramic layer is a TiC / Fe layer. By means of the super-wear-resisting side guide roller, the on-line using time of all kinds of side edge guide devices on the hot rolled strip production line can be prolonged, the operating maintenance time is shortened to a large extent, the operating maintenance difficulty is reduced to a large extent, and the number of overhauling time is decreased; and meanwhile, the repairable and reproducing possibility of the side guide roller is improved, the reproducing difficulty is reduced, and the yield of a cold rolled strip is improved.

Description

technical field [0001] The invention relates to a side support guide mechanism on a hot-rolled strip production line, in particular to a side guide roller for a super wear-resistant hot-rolled strip production line. Background technique [0002] At present, various guide devices are mainly used for side support and guide on the hot-rolled strip production line. The existing hot-rolled strip production line has been using guides with wear-resistant plates in the early stage. During the high-speed (8m / s) operation of the steel strip, the wear-resistant plates of the guides are in contact with both sides of the steel strip, which is a sliding Friction will cause great damage to both sides of the strip, especially when rolling silicon steel and other soft strips, the wear-resistant plate will scratch both sides of the strip, and the scratches will form more sparks (oxidation) The final ferric oxide or ferric oxide particles) will splash and adhere to the surface of the steel st...

AI Technical Summary

Problems solved by technology

After cold rolling, due to the high hardness of the oxide particles, they will be embedded in the cold-rolled steel strip, forming steel strip defects, which seriously affect the yield of the strip; the ruffles cannot be completely eliminated. To ensure the quality of the strip, it is There will be too much trimming, which will also reduce the yield of the strip

[0003] Recently, there has been a method of adding side guide rollers to various guides to improve the negative effects caused by sliding friction. However, due to the use of materials and other problems, the above-mentioned effects have been improved during the use of the rollers, but the service life of the rollers is short. Online replacement is frequent

Moreover, in order to ensure the support effect of the roller, the length of the roller body is generally relatively long, but the actual rapid wear area is concentrated in a specific height range of the roller, that is, the centerline region of the strip running, which leads to the fact that the roller is only used in actual use. Severe wear in some areas, basically no wear in other places

But as long as this area is worn out, the entire roller must be replaced, which greatly increases the cost of operation and maintenance

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