Hot-rolled alloy steel rolling mill

Abstract

The utility model relates to the technical field of hot rolling mills, and provides a hot rolling alloy steel mill. The rolling mill comprises a hot rolling unit, the hot rolling unit comprises working elements, a rotating element and a supporting frame, the working elements are rotating bodies, the rotating element is in a hollow cylinder shape, openings are formed in the two ends of the rotating element, the working elements are evenly distributed in the rotating element around the center axis of the rotating element, and the supporting frame is arranged on the rotating element. The working elements are rotationally connected into the rotating element, the rotating element is rotationally connected to the supporting frame, the rolling effect is guaranteed by increasing the number of the working elements, impact on the rolling mill in the rolling process is reduced by prolonging the rolling working face, the rolling effect of the hot rolling mill on alloy steel is guaranteed, and the working life of the rolling mill is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of hot rolling mills, in particular to a hot rolling alloy steel mill. Background Art

[0002] Hot rolling refers to rolling above the crystallization temperature. Hot rolling has the characteristics of low energy consumption and good plastic processing, and is widely used in many fields; alloy steel is mainly composed of carbon and iron plus other alloying elements such as copper, manganese, aluminum, titanium, etc. Alloy steel usually has high strength and has good anti-corrosion, high and low temperature resistance, wear resistance and other properties.

[0003] During the hot rolling process of alloy steel, due to the high strength of alloy steel, it will cause a large impact on the rolling mill, affecting the service life of the rolling mill and the rolling effect of the rolling mill. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a hot rolling alloy steel mill, which ensures the rolling effect by increasing the number of working elements; reduces the impact on the rolling mill during the rolling process by extending the rolling working surface, realizing the guarantee of the rolling effect of the hot rolling mill on alloy steel and the service life of the rolling mill.

[0005] The utility model provides a hot rolling alloy steel mill, including:

[0006] A hot rolling unit, the hot rolling unit includes a working element, a rotating element and a support frame. The working element is a rotating body, and the cross-section of the working element is a combination of a trapezoid and two rectangles. The two rectangles are respectively located at the centers of the upper base and the lower base of the trapezoid. The rotating element is a hollow cylindrical shape, and there are openings at both ends of the rotating element. The working elements are evenly distributed around its central axis inside the rotating element. The working element is rotatably connected inside the rotating element, and the rotating element is rotatably connected to the support frame.

[0007] Preferably, with the rotation axis of the rotating element as the center, the working elements are spirally distributed inside the rotating element.

[0008] Preferably, the component velocity of the rotational angular velocity of the working element in the rotational direction of the rotating element is the same as the rotational angular velocity of the rotating element.

[0009] Preferably, falling grooves are evenly opened on the outer wall of the rotating element.

[0010] Preferably, it further includes a collection basket. The support frame further includes a centralized groove. The centralized groove is located directly below the rotating element, and the collection basket is located directly below the centralized groove.

[0011] Preferably, the working elements are grouped, and the working elements within each group rotate synchronously.

[0012] Preferably, the rotation direction of the rotating element is the same as that of the working element, and the rotational angular velocity of the rotating element is the same as that of the working element.

[0013] Preferably, the rolling mill further includes a loading machine, and the loading machine is located in front of the hot rolling unit.

[0014] Preferably, the rolling mill further includes a cooling assembly. The cooling assembly is located behind the hot rolling unit. The cooling assembly includes fixed blocks and air coolers. The fixed blocks are evenly distributed around the central axis of the rotating element, and the air coolers are mounted on the fixed blocks.

[0015] Preferably, the rolling mill further includes a limiting ring. The limiting ring is located behind the hot rolling unit and is close to the outlet of the rotating element.

[0016] The technical solution of the present utility model reduces the impact force on a single working element by increasing the number of working elements, and makes the stress on the alloy steel more uniform to ensure the rolling effect; by extending the rolling working surface, the impact force during the rolling process on the rolling mill is avoided from concentrating, and the service life of the working elements is ensured. Finally, the rolling effect of the hot rolling mill on alloy steel is improved, and the service life of the rolling mill is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is a schematic structural diagram of the hot rolling alloy steel rolling mill of the present utility model;

[0019] Figure 2 is an exploded view of the composition of the hot rolling alloy steel rolling mill of the present utility model;

[0020] Figure 3 is Figure 1 an exploded view of the composition of the hot rolling unit in the hot rolling alloy steel rolling mill in ;

[0021] Figure 4 is Figure 1 a cross-sectional view of the working state of the hot rolling alloy steel rolling mill in ;

[0022] Figure 5 isFigure 1 Half-sectional view of the working element in a medium hot-rolled alloy steel rolling mill;

[0023] Figure 6 For Figure 1 Top view of the working element and the rotating element in a medium hot-rolled alloy steel rolling mill;

[0024] Explanation of reference numerals:

[0025] 1. Hot-rolling unit; 11. Working element; 12. Rotating element; 121. Drop chute; 13. Support frame; 131. Concentrating chute; 14. Collection basket; 2. Feeding machine; 3. Cooling assembly; 31. Fixed block; 32. Cooling fan; 4. Limiting ring. Specific implementation manner

[0026] The technical solutions of the present utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0027] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0028] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined. In addition, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] Combined with Figures 1 to 6 As shown, a hot-rolled alloy steel rolling mill provided by the present utility model method includes a hot-rolling unit 1.

[0030] Combined with Figures 1 to 6 As shown, the hot-rolling unit 1 includes a working element 11, a rotating element 12 and a support frame 13. The working element 11 is a rotating body, and the cross-section of the working element 11 is a combination of a trapezoid and two rectangles. The two rectangles are respectively located at the centers of the upper base and the lower base of the trapezoid. The rotating element 12 is a hollow cylindrical shape, and the rotating element 12 is provided with openings at both ends. The working elements 11 are evenly distributed around its central axis within the rotating element 12. The working element 11 is rotatably connected within the rotating element 12, and the rotating element 12 is rotatably connected to the support frame 13. By increasing the number of working elements 11, the impact force on a single working element 11 is reduced, and the force on the alloy steel is made more uniform to ensure the rolling effect. By extending the rolling working surface, the impact force during the rolling process is prevented from concentrating, ensuring the working life of the working element 11. Ultimately, the rolling effect of the hot-rolling mill on the alloy steel is improved, and the working life of the rolling mill is increased.

[0031] In some embodiments, combined with Figure 4 、 Figure 6 As shown, with the rotation axis of the rotating element 12 as the center, the working elements 11 are spirally distributed within the rotating element 12. By adding an included angle, a movement component along the rotation axis of the rotating element 12 can be generated, achieving the reduction of the feeding difficulty and the friction between the working element 11 and the alloy steel, and improving the working efficiency and working life of the rolling mill.

[0032] In some embodiments, combined with Figure 4 、 Figure 6 As shown, the rotational angular velocity of the working element 11 can be decomposed into a component velocity along the rotation direction of the rotating element 12 and a component velocity along the rotation axis direction of the rotating element 12. The component velocity of the rotational angular velocity of the working element 11 in the rotation direction of the rotating element 12 is the same as the rotational angular velocity of the rotating element 12, which can achieve the cancellation of the movement between the two, avoiding the rotation of the force on the alloy steel by the hot-rolling unit 1 and affecting the safety of production.

[0033] In some embodiments, combined with Figures 1 to 4 As shown, uniformly arranged falling grooves 121 are opened on the outer wall of the rotating element 12. By designing the falling grooves 121, the steel slag generated during the rolling process can be discharged, avoiding the accumulation of steel slag within the rotating element 12 and affecting the normal operation of the rolling mill.

[0034] In some embodiments, combined with Figures 1 to 4As shown, it further includes a collection basket 14. The support frame 13 includes a centralized groove 131. The centralized groove 131 is located directly below the rotating element 12, and the collection basket 14 is located directly below the centralized groove 131. The collection of steel slag is completed through the establishment of the centralized groove 131 and the collection basket 14, facilitating the centralized treatment of steel slag and preventing the steel slag from affecting the normal operation of the rolling mill.

[0035] In some embodiments, in combination with Figures 1 to 4 As shown, the working elements (11) are grouped, and the working elements (11) within each group rotate synchronously, which can ensure the even stress on the alloy steel and improve the rolling effect.

[0036] In some embodiments, in combination with Figures 1 to 4 As shown, the rotating direction of the rotating element 12 is the same as that of the working element 11, and the rotational angular velocity of the rotating element 12 is the same as that of the working element 11. This can achieve the cancellation of the axial rotation between the working element 11 and the rotating element 12, avoiding the problem of alloy steel rotation affecting the safety of production.

[0037] In some embodiments, in combination with Figures 1 to 2 As shown, the rolling mill further includes a feeding machine 2. The feeding machine 2 is located in front of the hot rolling unit 1. The feeding machine 2 is responsible for regulating the temperature, feeding speed, and feeding position of the alloy steel to ensure the smooth progress of the hot rolling operation of the hot rolling unit 1.

[0038] In some embodiments, in combination with Figures 1 to 2 As shown, the rolling mill further includes a cooling assembly 3. The cooling assembly 3 is located behind the hot rolling unit 1. The cooling assembly includes a fixing block 31 and a cold air blower 32. The fixing blocks 31 are evenly distributed around the central axis of the rotating element 12, and the cold air blowers 32 are installed on the fixing blocks 31. The rotating element 12 is fixed by the fixing blocks 31, and the cooling assembly 3 is driven to rotate by the rotating element 12 to achieve rotational cooling, ensuring the uniformity of cooling.

[0039] In some embodiments, in combination with Figures 1 to 2 As shown, the rolling mill further includes a limiting ring 4. The limiting ring 4 is located behind the hot rolling unit 1 and is close to the outlet of the rotating element 12. The limiting ring 4 limits the alloy steel after hot rolling to prevent the alloy steel after hot rolling from colliding with other components, damaging the rolling mill and affecting the quality of the hot rolling finished product.

[0040] Working process: The alloy steel precisely enters the entrance of the hot rolling unit 1 through the feeding machine 2, and then the alloy steel contacts the working element 11. The working element 11 and the rotating element 12 cooperate with each other to rotate, causing the working element to perform rolling work around the alloy steel. The steel slag generated during this period will be concentrated in the collection basket 14 after passing through the falling trough 121 and the concentrating trough 131. When the alloy steel after rolling passes through the exit of the hot rolling unit 1, the cooling assembly 3 connected to the rotating element 12 will uniformly cool the alloy steel. During this period, the alloy steel is limited by the limiting ring 4 to prevent the alloy steel from colliding with the cooling assembly until the hot rolling process of the alloy steel ends after passing through the limiting ring.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hot rolling alloy steel mill, characterized in that: include: A hot rolling unit (1), the hot rolling unit (1) comprising a working element (11), a rotating element (12) and a support frame (13), the working element (11) being a rotating body, the cross section of the working element (11) being a combination of a trapezoid and two rectangles, the two rectangles being respectively located at the center of the upper base and the lower base of the trapezoid, the rotating element (12) being a hollow cylindrical shape, and having openings at both ends of the rotating element (12), the working elements (11) being evenly distributed in the rotating element (12) around its central axis, the working element (11) being rotatably connected to the rotating element (12), and the rotating element (12) being rotatably connected to the support frame (13).

2. The hot rolling alloy steel mill according to claim 1, characterized in that: With the rotation axis of the rotating element (12) as the axis, the working element (11) is distributed in the rotating element (12) in a spiral shape.

3. The hot rolling alloy steel mill according to claim 2, characterized in that: The component speed of the rotational angular velocity of the working element (11) in the rotational direction of the rotating element (12) is the same as the rotational angular velocity of the rotating element (12).

4. The hot rolling alloy steel mill according to claim 1, characterized in that: The outer wall of the rotating element (12) is evenly provided with drop grooves (121).

5. The hot rolling alloy steel mill according to claim 1, characterized in that: It also includes a collecting basket (14), the supporting frame (13) includes a concentrating groove (131), the concentrating groove (131) is located directly below the rotating element (12), and the collecting basket (14) is located directly below the concentrating groove (131).

6. The hot rolling alloy steel mill according to claim 1, characterized in that: The working elements (11) are arranged in groups, and the working elements (11) in each group rotate synchronously.

7. The hot rolling alloy steel mill according to claim 1, characterized in that: The rotation direction of the rotating element (12) is the same as the rotation direction of the working element (11), and the rotation angular velocity of the rotating element (12) is the same as the rotation angular velocity of the working element (11).

8. The hot rolling alloy steel mill according to claim 1, characterized in that: It also comprises a loading machine (2), wherein the loading machine (2) is located in front of the hot rolling unit (1).

9. The hot rolling alloy steel mill according to claim 1, characterized in that: It also includes a cooling assembly (3), the cooling assembly (3) is located at the rear of the hot rolling unit (1), the cooling assembly includes a fixed block (31) and a cooling fan (32), the fixed blocks (31) are evenly distributed around the central axis of the rotating element (12), and the cooling fan (32) is installed on the fixed block (31).

10. The hot rolling alloy steel mill according to claim 1, characterized in that: It also comprises a limiting ring (4), wherein the limiting ring (4) is located behind the hot rolling unit (1), and the limiting ring (4) is close to the exit of the rotating element (12).

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