JP-2026076260-A - Asymmetric rolling mill

Abstract

[Solution] The present invention relates to an asymmetric rolling apparatus capable of improving the physical properties of a material, and includes: a first work roll WR1 that contacts a first surface 1a of a material to be rolled 1; a second work roll WR2 that contacts a second surface 1b of a material to be rolled and has a second radius larger than the first radius of the first work roll so asymmetric rolling of the material to be rolled; a drive roll DR that contacts the first work roll and is formed above or below the first work roll so as to drive the first work roll; a drive device 70 that drives the second work roll or the drive roll; and a first idler roll IR1 that contacts the first work roll and is formed in front of or behind the first work roll so as to support the first work roll in the front-rear direction. [Effects] The deformation of the first work roll in the front-rear direction can be minimized, and even if deformation occurs, alignment to the designated position and restoration to the original state are possible, preventing defects and allowing for precise control of the shape of the sheet material. [Selection Diagram] Figure 1

Inventors

• チョン、ヒョ テ
• クォン、サン チュル
• キム、スン テ
• イ、チュル ウ

Assignees

• ソルム アドバンスト マテリアルズ カンパニー リミテッド

Dates

Publication Date

20260511

Application Date

20260122

Priority Date

20220613

Claims (16)

1. A first work roll that contacts the first surface of the rolled material, A second work roll having a second radius larger than the first radius of the first work roll, which contacts the second surface of the material to be rolled and enables asymmetric rolling of the material to be rolled, A drive roll formed above or below the first work roll so as to contact the first work roll and drive the first work roll, A drive device for driving the second work roll or the drive roll, and a first idler roll formed in front of or behind the first work roll so as to contact the first work roll without interfering with the linear movement path of the rolled material and to support the first work roll in the front-rear direction, Includes, The first work roll is, A rolling section that contacts the material to be rolled so that the material to be rolled can be rolled, A joint portion is formed in the rolling portion so as to enable joint movement in the front-rear direction of the rolling portion, A sliding portion is formed on the rolling portion so that the rolling portion can slide in the axial direction while rotating, Includes, The aforementioned sliding part is, A sleeve loosely inserted into a concave shaft hole formed at the end of the rolled portion included in the joint portion, A sleeve rotation shaft is rotatably mounted on the aforementioned sleeve, A guide bush that is fixed to the cassette body or is rotatably formed to support the sleeve rotation axis so that it can rotate and slide, A damping device installed on the sleeve rotating shaft, which reduces vibration and noise and enables the sleeve rotating shaft to return to its original sliding position when unloaded, An asymmetric rolling mill, including one.
2. The asymmetric rolling apparatus according to claim 1, wherein the first idler roll is formed at a distance of a first interval from the drive roll and has a third radius smaller than the first radius of the first work roll so as not to interfere with the rolling path of the material to be rolled.
3. The first idle roll is, A first-first idler roll formed in front of the first work roll, the second height of the second central axis being the same as the first height of the first central axis of the first work roll, and a first-second idler roll formed behind the first work roll, the third height of the third central axis being the same as the first height of the first central axis of the first work roll, The asymmetric rolling apparatus according to claim 2, including the following:
4. The asymmetric rolling apparatus according to claim 1, wherein the drive device drives the drive roll and the second work roll, respectively, so that the first rotational linear velocity of the first work roll is the same as the second rotational linear velocity of the second work roll.
5. The asymmetric rolling apparatus according to claim 4, wherein the drive device drives the drive roll and the second work roll at the same rotational angular velocity, such that the first rotational linear velocity of the first work roll is the same as the second rotational linear velocity of the second work roll, and the fourth radius of the drive roll is the same as the second radius of the second work roll.
6. A first guide roll is formed in front of or behind the first idler roll so as to contact the first idler roll and support the first idler roll in the front-rear direction or in the circumferential direction of the drive roll, The asymmetric rolling apparatus according to claim 1, further comprising:
7. The asymmetric rolling apparatus according to claim 6, wherein the first guide roll contacts the drive roll and has a fifth radius greater than the first radius of the first work roll or greater than the third radius of the first idler roll, so as not to interfere with the rolling path of the material to be rolled.
8. The first guide roll is, A first-first guide roll formed in front of the first work roll, wherein the fourth height of the fourth central axis is formed to be higher than the first height of the first central axis of the first work roll, and a first-second guide roll formed behind the first work roll, wherein the fifth height of the fifth central axis is formed to be higher than the first height of the first central axis of the first work roll, The asymmetric rolling apparatus according to claim 7, including the following:
9. The asymmetric rolling apparatus according to claim 6, wherein the first guide roll is formed at a distance of a second interval from the drive roll.
10. A second idler roll is formed in front of or behind the first guide roll so as to contact the first guide roll and support the first guide roll in the front-rear direction or in the circumferential direction of the drive roll, The asymmetric rolling apparatus according to claim 6, further comprising:
11. A second guide roll is formed in front of or behind the second idler roll so as to contact the second idler roll and support the second idler roll in the front-rear direction or in the circumferential direction of the drive roll, The asymmetric rolling apparatus according to claim 10, further comprising:
12. The aforementioned joint portion is The asymmetric rolling apparatus according to claim 1, wherein at least one or more of the following are selected to be installed in the shaft hole: articulated balls, angular contact bearings, and combinations thereof.
13. The damping device is, A compression spring is installed on one side of the sleeve rotation shaft and acts as an elastic restoring force when it is contracted, and a tension spring is installed on the other side of the sleeve rotation shaft and acts as an elastic restoring force when it is extended, The asymmetric rolling apparatus according to claim 1, including the following:
14. The aforementioned sliding part is, A deep groove ball bearing formed between the sleeve and the sleeve rotation shaft, and a thrust bearing formed between the guide bush and the bush cap, The asymmetric rolling apparatus according to claim 1, further comprising:
15. The first guide roll is, At least one rolling oil injection groove is formed, and a contact portion that contacts the first idler roll, A shaft portion having one end fixed to the cassette body and the other end inserted into a recess formed in a concave shape at the end of the contact portion, and at least one self-aligning bearing formed between the contact portion and the shaft portion so that the rotation centers of the contact portion are aligned and can rotate, The asymmetric rolling apparatus according to claim 6, including the following:
16. The asymmetric rolling apparatus according to claim 15, wherein the rolling oil injection groove portion includes a circumferential groove portion formed in the shape of a ring-shaped linear groove along the circumference of the contact portion so that the injected rolling oil can pass through the rolling oil injection groove portion and be directly injected onto the first work roll via a first gap between the first idler roll and the drive roll.

Description

This invention relates to an asymmetric rolling mill, and more particularly, to an asymmetric rolling mill capable of improving the physical properties of materials. Generally, a rolling process can be used to process metal components into sheet materials or other forms conforming to certain specifications. In such a rolling process, the microstructure within the rolled material can change in accordance with the change in its thickness. In response to these changes in the microstructure of the rolled material, it first exhibits a texture in which crystals are oriented in the orientation direction. This texture, which appears after rolling, is very closely related to the material's properties, such as its formability. Therefore, by controlling the texture of the rolled material during the rolling process, it is possible to improve the material's properties, such as its formability, after rolling. Conventionally, in order to improve the physical properties of such materials, asymmetric rolling techniques have been developed that use at least one pair of work rolls with different radii, enabling effective shear deformation even in materials with poor room-temperature formability. This is a perspective view showing an asymmetric rolling mill according to some embodiments of the present invention.Figure 1 is a cross-sectional view showing an asymmetric rolling mill.Figure 2 is an enlarged cross-sectional view showing an asymmetric rolling mill.This is a cross-sectional view showing an asymmetric rolling apparatus according to some other embodiments of the present invention.This is a cross-sectional view showing an asymmetric rolling apparatus according to yet another embodiment of the present invention.Figure 1 is a cross-sectional view showing the first work roll of an asymmetric rolling mill.Figure 6 is an enlarged cross-sectional view showing a portion of the first work roll of an asymmetric rolling mill.Figure 1 is a cross-sectional view showing the first idler roll of an asymmetric rolling mill.Figure 1 is a cross-sectional view showing the first guide roll of an asymmetric rolling mill.Figure 9 is a cross-sectional view showing the state in which rolling oil is directly injected into the first work roll through the rolling oil injection groove of the asymmetric rolling mill.Figure 1 is a cross-sectional view showing another example of the rolling oil injection groove section of an asymmetric rolling mill. Several preferred embodiments of the present invention will be described in detail below with reference to the attached drawings. Each embodiment of the present invention is provided to further and completely illustrate the invention to those skilled in the art, and the following embodiments can be modified into many other forms; the scope of the invention is not limited to these embodiments. Rather, these embodiments are provided to further enrich and complete this disclosure and to fully convey the idea of the invention to those skilled in the art. Furthermore, the thicknesses and sizes of the layers in the drawings are exaggerated for illustrative purposes and clarity. The terms used herein are for the purpose of describing specific embodiments and are not intended to limit the invention. As used herein, a singular form may include multiple forms unless the context explicitly indicates otherwise. Furthermore, as used herein, “comprise” and/or “comprising” specify the presence of the shapes, figures, stages, actions, members, elements, and/or groups thereof mentioned, and do not exclude the presence or addition of one or more other shapes, figures, actions, members, elements, and/or groups thereof. Hereinafter, each embodiment of the present invention will be described with reference to the drawings schematically illustrating ideal embodiments of the present invention. In each drawing, variations in the illustrated shape may be expected, for example, due to manufacturing techniques and/or tolerances. Therefore, embodiments of the concept of the present invention should not be construed as being limited to specific shapes within the region shown herein, and should include, for example, changes in shape resulting from manufacturing. Figure 1 is a perspective view showing an asymmetric rolling mill 100 according to some embodiments of the present invention, Figure 2 is a cross-sectional view showing the asymmetric rolling mill 100 of Figure 1, and Figure 3 is an enlarged cross-sectional view showing the asymmetric rolling mill 100 of Figure 2. First, as shown in Figures 1 to 3, the asymmetric rolling mill 100 according to some embodiments of the present invention can be broadly divided into a first work roll WR1, a second work roll WR2, a drive roll DR, a drive unit 70, a first idle roll IR1, and a first guide roll GR1. For example, the first work roll WR1 may be a rolling roll that contacts the first surface 1a, i.e., the upper surface, of the rolled material 1, which is in panel form. The corresponding s