Method for manufacturing curved rail

Abstract

The invention discloses a method for manufacturing a curved rail. The method comprises the following steps of: (1) cutting out the curved rail on a steel plate, wherein connection points are reserved between the curved rail and the steel plate; (2) rolling up the steel plate; and (3) cutting off the connection points. According to the method for manufacturing the curved rail, disclosed by the invention, a method of steel plate rolling up is adopted, and then, flaws, such as air holes, sand adhering and sand swelling, cannot occur during casting, so that the phenomenon of fracture difficultly occurs; and when the curved rail is cut on the steel plate, the connection points are reserved between the curved rail and the steel plate, the curved rail is still connected with the steel plate integrally, the steel plate is integrally rolled up, the curvature of the curved rail can be excellently ensured due to the spatial limitation of the surrounding steel plate while the curved rail is also rolled up, and thus, the accuracy of the curvature of the curved rail is ensured. In summary, the method for manufacturing the curved rail, disclosed by the invention, has the advantages that the accuracy of the curvature of the curved rail is ensured, and the phenomenon of fracture difficultly occurs.

Description

technical field [0001] The invention relates to the technical field of manufacturing curved rails of annular coolers, in particular to a method for manufacturing curved rails. Background technique [0002] The annular cooler is the main equipment for producing oxidized pellets or metallized pellets, and the curved track is one of the main parts of the annular cooler. The curved rail belongs to the pressing rail assembly of the annular cooler, and works together with the side rails to ensure the smooth operation of the trolley in the annular cooler. The main function of the curved rail is to ensure the safety and reliability of the trolley when it is overturned and unloaded. Among them, the curvature of the curved rail must be the same as that of the side rail. [0003] At present, in the production of curved rails, the curved rails are generally cut and formed directly on the steel plate, and then rolled. Since the curved rails are irregular steel plates, the curvature of t...

AI Technical Summary

Problems solved by technology

[0003] At present, in the production of curved rails, the curved rails are generally cut and formed directly on the steel plate, and then rolled. Since the curved rails are irregular steel plates, the curvature of the curved rails cannot be well guaranteed after rolling, and the accuracy of the arcs cannot be achieved. To meet the requirements, the trolley cannot run smoothly. At present, there is still a method of casting curved rails. Although the accuracy of the arc meets the requirements, the shape of the curved rails is not perfect, and there are phenomena such as sand sticking and sand swelling. At the same time, due to the casting There are air holes in the curved rail, which reduces its effective bearing area, and it will cause stress concentration around the air hole, which will reduce the impact resistance and fatigue resistance of the cast curved rail, and it is easy to break the curved rail during production and operation.

[0004] Therefore, how to provide a method for making curved rails, that is, to ensure the accuracy of the curvature of the curved rails without easily breaking the phenomenon, is a technical problem that those skilled in the art need to solve at present.

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