A method for alleviating the thinning of the web plate in the vertical rolling of the wheel
A wheel and spoke plate technology, which is applied in the field of wheel rolling and forming, can solve problems such as insufficient thickness of the spoke plate, reduced metal yield, and poor rim outer diameter, so as to reduce the amount of thinning and prevent jamming , the effect of reducing the degree of tension
Active Publication Date: 2021-02-26
ANHUI UNIVERSITY OF TECHNOLOGY
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Problems solved by technology
During the rolling forming process, the metal volume remains unchanged, and the thinning of the web will lead to a large amount of rim metal after the wheel is rolled and formed, and the outer diameter of the rim is out of tolerance, which will increase additional processing in the subsequent processing and reduce the metal. The yield rate is high, and the thickness of the web may even be insufficient, resulting in waste
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[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0019] figure 1 It is a schematic diagram of the height reduction of the wheel center in the method of the present invention, and is also a schematic diagram of the configuration structure of the workpiece and the main tools during vertical rolling of the wheel; the wheel 2 includes a wheel rim 2a and a wheel spoke 2b, and the spoke roller includes the left spoke roller. 3a and the right side web roll 3b, and the edge roll includes a left edge roll 4a and a right edge roll 4b. When the wheel is rolled, the rim is mainly rolled and expanded between the main roller 1 and the two left and right spoke rollers 3a and 3b, which are located on the left and right and symmetrically arranged. Flow in all directions: most of the metal flows in the circumferential direction, increasing the outer diameter of the rim; part of the metal flows in the width direction of ...
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The invention discloses a method for reducing web plate thinning during vertical rolling of a wheel, and belongs to the technical field of wheel rolling. Based on the existing wheel vertical rolling process, the present invention lowers the center of the wheel to 20-60mm below the horizontal axis of the main roll by moving the position of the upper and lower centering rolls downward when the wheel diameter expansion speed is relatively high in the middle stage of rolling. Promote the metal in the rolling deformation area to flow to the web more easily, and reduce the degree of web thinning; at the end of rolling, when the inner diameter of the rim is close to the target value, the position of the upper and lower centering rollers is raised, so that the height of the center of the wheel is kept in the horizontal direction of the main roller Consistently until the end of rolling. The adjustment of the height of the wheel center is realized by controlling the position of the upper and lower centering rollers through the hydraulic cylinder. The invention can not only reduce the degree of thinning of the web plate and improve the precision of wheel rolling and forming, but also can improve the rolling biting condition and prevent the phenomenon of "rolling jam".
Description
Technical field: [0001] The invention belongs to the technical field of rolling and forming of wheels, and in particular relates to a method for reducing web thinning in vertical rolling of wheels. Background technique: [0002] Wheel rolling is a key step in the forming of integrally rolled steel wheels. During the vertical rolling of the wheel, the length of the web increases as the rim expands. The rolled metal of the rim flows partly in the circumferential direction and partly towards the web. If the amount of metal flowing to the web from the rim is not sufficient to supplement the amount of metal required to extend the web, the web will experience radial tensile stress. When the radial tensile stress reaches a certain level, the web (non-rolled area) will be thinned. If the prediction and control of the thinning amount are not accurate, the forming accuracy of the wheel will be seriously affected. The study found that the thinning phenomenon of the web mainly occur...
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IPC IPC(8): B21H1/04
Inventor 沈晓辉王会廷温永红章静曹杰潘红波
Owner ANHUI UNIVERSITY OF TECHNOLOGY