A scale-breaking machine

Abstract

The invention discloses a tension-leveling and descaling machine which comprises a frame, an inlet turning roll, a bending unit and a straightening unit. The bending unit comprises an upper bending roll box, a lower bending roll box and a first quick opening mechanism which drives the upper bending roll box. The straightening unit comprises an upper straightening roll box, a lower straightening roll box and a second quick opening mechanism which drives the upper straightening roll box. The tension-leveling and descaling machine further comprises an outlet turning roll. The inlet turning roll and the outlet turning roll are fixedly connected with outside of the frame. The bending unit further comprises a first elevating mechanism which drives the lower bending roll box. The straightening unit further comprises a second elevating mechanism which drives the lower straightening roll box with two large roll diameter straightening rolls. According to the tension-leveling and descaling machine, scratch to the roller surfaces of an upper working roll and a lower roll can be prevented when a welding seam of strip steel passes; the two large roll diameter straightening rolls in the straightening unit are configured below the strip steel, thereby reducing a mechanism load; and furthermore a roll brushing device is added at the outlet side of the tension-leveling and descaling machine for furthermore removing an iron oxide layer on the surface of the strip steel after descaling, thereby improving the descaling rate of the strip steel.

Description

technical field [0001] The invention belongs to the technical field of metal rolling, and in particular relates to a tension leveling and descaling machine used in a combined pickling unit or a continuous pickling unit before pickling hot-rolled strip steel. Background technique [0002] In the combined pickling unit or continuous pickling unit, in order to improve the pickling efficiency of the hot-rolled strip, the surface of the hot-rolled strip is usually descaled before pickling, and the tension-leveling descaler is used to descale the strip surface The key equipment for iron oxide scale can also improve the shape of the strip and reduce the deviation of the strip in the subsequent process. [0003] The traditional tension leveling scale breaking machine includes two sets of bending units and one set of straightening units, and a turning roller is arranged on the entrance side. This structure has the following disadvantages: [0004] 1. Some of the steering rollers on ...

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Problems solved by technology

[0008] In view of this, the object of the present invention is to provide a tension leveling scale breaking machine to solve the problem of scratching the upper and lower work roll surfaces when the strip weld seam passes through the tension leveling scale breaker. The two large-diameter straightening rollers are arranged under the strip steel to reduce the burden on the mechanism; another purpose of the present invention is to add a brush roller device on the outlet side of the tension leveling scale breaking machine to clean the surface of the hot rolled strip steel after scale breaking. For further removal of loose iron scale, in order to improve the descaling rate of hot-rolled strip

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