Rolling method of twenty-high roll mill

Abstract

The invention discloses a rolling method of a twenty-high rolling mill. According to the rolling method of the twenty-high roll mill, the twenty-high roll mill is adopted for rolling foil materials, the twenty-high roll mill comprises an upper rolling roll set and a lower rolling roll set, and the portion between the upper rolling roll set and the lower rolling roll set is used for rolling the foil materials. A first layer of upper rolling roller group, a second layer of upper rolling roller group, a third layer of upper rolling roller group and a fourth layer of upper rolling roller group are sequentially arranged in the upper rolling roller group from the side adjacent to the foil to the side far away from the foil; a first-layer lower rolling roller group, a second-layer lower rolling roller group, a third-layer lower rolling roller group and a fourth-layer lower rolling roller group are sequentially arranged in the lower rolling roller group from the side close to the rolled foil to the side far away from the rolled foil; at least one rolling roller in the second-layer upper rolling roller set or the second-layer lower rolling roller set is a parabola roller, and the outer wall of a roller body of the parabola roller is in a convex parabola shape with the outer diameter gradually decreasing from the center to the two ends in the axial direction. The rolling rollers in the convex parabola shape are additionally arranged, so that the uniformity of the thickness of the foil is improved conveniently.

Description

Technical Field

[0001] The invention relates to the field of foil manufacturing, in particular to a rolling method. Background Art

[0002] Ultra-thin metal foil (TMF) is made by rolling thick raw material plates into thinner foils on a rolling mill, and then undergoing trimming, cleaning or annealing to achieve the final product requirements.

[0003] The rolling stage of the foil is completed by the rolling mill. During the rolling process of the rolling mill, the thickness of the entire foil surface is uneven due to the pressure of the rolling mill head. In order to better control the shape, there is an urgent need for a rolling method that can control the flatness of the shape. Summary of the Invention

[0004] In view of the problems existing in the prior art, the present invention provides a rolling method of a twenty-high rolling mill to solve at least one of the above technical problems.

[0005] In order to achieve the above-mentioned object, the present invention provides a rolling method of a twenty-high rolling mill, wherein the twenty-high rolling mill is used to roll foil, and the twenty-high rolling mill includes an upper rolling roll group and a lower rolling roll group arranged above and below, and the upper rolling roll group and the lower rolling roll group are used to roll the foil. It is characterized in that the upper rolling roll group is composed of a first layer of upper rolling roll group, a second layer of upper rolling roll group, a third layer of upper rolling roll group, and a fourth layer of upper rolling roll group in the order from adjacent to the foil to the side away from the foil;

[0006] The lower rolling roller group comprises a first layer of lower rolling roller group, a second layer of lower rolling roller group, a third layer of lower rolling roller group and a fourth layer of lower rolling roller group in order from the side adjacent to the rolled foil to the side away from the rolled foil;

[0007] At least one rolling roller in the second-layer upper rolling roller group or the second-layer lower rolling roller group is a parabolic roller, and the outer wall of the roller body of the parabolic roller is an outward convex parabola with an outer diameter decreasing from the axial center to both ends. The remaining rolling rollers are all conical rollers, and the roller body of the conical roller includes a first conical portion, a cylindrical portion and a second conical portion connected in sequence along the axial direction.

[0008] The present invention optimizes the structure of the rolling roller and adds a convex parabolic rolling roller, thereby improving the uniformity of the foil thickness.

[0009] Further preferably, the outer diameter of the center of the roller body of the parabolic roller is 24.79 mm;

[0010] The outer diameter of the roller body of the parabolic roller is 24.74 mm at both ends;

[0011] The axial length of the roller body of the parabolic roller is 190 mm.

[0012] Further preferably, the outer diameter of the center of the roller body of the tapered roller is 24.79 mm;

[0013] The outer diameter of both ends of the tapered roller body is 24.74 mm;

[0014] The axial length of the cylindrical portion is 120 mm;

[0015] The axial length of the roller body of the tapered roller is 190 mm.

[0016] More preferably, the width of the foil is 130 mm-135 mm.

[0017] Further preferably, the second layer lower rolling roller group is provided with two rolling rollers, one of which is the parabolic roller and the other is the tapered roller.

[0018] Easy to replace rolling rollers.

[0019] Alternatively, the second-layer upper rolling roller group is provided with two rolling rollers, one of which is the parabolic roller and the other is the tapered roller.

[0020] Further preferably, when the twenty-high rolling mill is rolling, the foil conveying speed of the twenty-high rolling mill is 7-25 m / min;

[0021] The foil rolling tension of the twenty-high rolling mill is 3-15KG;

[0022] The foil rolling pressure of the twenty-high rolling mill is 0.8-2T.

[0023] More preferably, the 20-high rolling mill rolls the foil having a thickness of 14 μm to a thickness of 4.7 μm-5.3 μm.

[0024] Further preferably, after rolling by the twenty-high rolling mill, both ends of the foil have no wavy structure, and the two ends and the center of the foil are flat.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The present invention optimizes the rolling rollers of the twelve-roller rolling mill so that the entire surface of the foil material is more uniform and the shape is better.

[0027] When rolling with a traditional twelve-high rolling mill, the foil has a wavy structure on both sides, which leads to the foil being loose on both sides and tight in the middle, resulting in poor shape.

[0028] In the present invention, at least one rolling roller in the second upper rolling roller group or the second lower rolling roller group is a parabolic roller, so that the shape of the foil after rolling is relatively smooth. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A structural schematic diagram of a parabolic roller of specific embodiment 1;

[0030] Figure 2 A schematic structural diagram of a tapered roller in specific embodiment 1;

[0031] Figure 3 This is a rolling roll layout diagram of a twenty-high rolling mill in specific embodiment 1;

[0032] Figure 4 Schematic diagram of foil after conventional rolling;

[0033] Figure 5 This is a physical picture of the foil after traditional rolling;

[0034] Figure 6 is a schematic diagram of the rolled foil of the present invention;

[0035] Figure 7 This is a physical picture of the rolled foil of the present invention; DETAILED DESCRIPTION

[0036] The present invention will be further described below with reference to the accompanying drawings.

[0037] See also Figures 1 to 3 Specific embodiment 1: A rolling method of a twenty-high rolling mill, wherein the twenty-high rolling mill is used to roll foil. The twenty-high rolling mill includes an upper rolling roll group and a lower rolling roll group 2 arranged above and below. The upper rolling roll group and the lower rolling roll group 2 are used to roll the foil. The upper rolling roll group is composed of the first layer of upper rolling roll group, the second layer of upper rolling roll group 1, the third layer of upper rolling roll group and the fourth layer of upper rolling roll group from the side adjacent to the foil to the side away from the foil; the lower rolling roll group 2 is composed of the first layer of upper rolling roll group, the second layer of upper rolling roll group 1, the third layer of upper rolling roll group and the fourth layer of upper rolling roll group from the side adjacent to the foil to the side away from the foil. On the foil side, the first, second, third, and fourth layers of rolling rolls are arranged in order. At least one of the rolling rolls in the second upper or second lower layers is a parabolic roller 3, with the outer wall of the parabolic roller 3 forming a convex parabola with a decreasing outer diameter from the center to the ends. The remaining rolling rolls are tapered rollers 4, each consisting of a first tapered portion, a cylindrical portion, and a second tapered portion connected in sequence along the axial direction. The present invention optimizes the rolling roll structure and adds convex parabolic rollers, thereby improving the uniformity of foil thickness.

[0038] The outer diameter of the center of the roller body of the parabolic roller 3 is 24.79 mm; the outer diameters of both ends of the roller body of the parabolic roller 3 are 24.74 mm; and the axial length of the roller body of the parabolic roller 3 is 190 mm.

[0039] The outer diameter of the center of the tapered roller 4 is 24.79 mm; the outer diameter of both ends of the tapered roller 4 is 24.74 mm; the axial length of the cylindrical portion is 120 mm; and the axial length of the tapered roller 4 is 190 mm.

[0040] The width of the foil is 130mm-135mm.

[0041] The second-layer lower rolling roll assembly 2 is equipped with two rolling rolls, one of which is a parabolic roller 3 and the other is a tapered roller 4. This facilitates roller replacement. Alternatively, the second-layer upper rolling roll assembly 1 is equipped with two rolling rolls, one of which is a parabolic roller 3 and the other is a tapered roller 4.

[0042] When the twenty-high mill is rolling, the foil conveying speed of the twenty-high mill is 7-25 meters per minute; the foil rolling tension of the twenty-high mill is 3-15 kg; and the foil rolling pressure of the twenty-high mill is 0.8-2 tons.

[0043] The 20-high rolling mill rolls the 14 μm thick foil to a thickness of 4.7 μm-5.3 μm.

[0044] After rolling on a twenty-high mill, the ends of the foil have no wavy structure and the ends and center of the foil are flat. Figure 6 as well as Figure 7 .

[0045] When rolling with a traditional twelve-high mill, the rolling rolls of the second upper rolling roll group and the second lower rolling roll group are tapered rolls. The foil has a wavy structure on both sides, which leads to the situation that the foil is loose on both sides and tight in the middle, resulting in poor shape. Figure 4 as well as Figure 5 .

[0046] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A rolling method using a twenty-high mill, wherein the twenty-high mill is used to roll foil, wherein the twenty-high mill comprises an upper rolling roll group and a lower rolling roll group arranged one above the other, wherein the space between the upper rolling roll group and the lower rolling roll group is used to roll the foil, and wherein: The upper rolling roller group includes the first layer upper rolling roller group, the second layer upper rolling roller group, the third layer upper rolling roller group and the fourth layer upper rolling roller group in order from the side adjacent to the foil to the side away from the foil; The lower rolling roller group comprises a first layer of lower rolling roller group, a second layer of lower rolling roller group, a third layer of lower rolling roller group and a fourth layer of lower rolling roller group in order from the side adjacent to the rolled foil to the side away from the rolled foil; At least one rolling roller in the second-layer upper rolling roller group or the second-layer lower rolling roller group is a parabolic roller, and the outer wall of the roller body of the parabolic roller is an outward convex parabola with an outer diameter decreasing from the axial center to both ends. The remaining rolling rollers are all conical rollers, and the roller body of the conical roller includes a first conical portion, a cylindrical portion and a second conical portion connected in sequence along the axial direction.

2. The rolling method of a twenty-high mill according to claim 1, characterized in that: The outer diameter of the center of the roller body of the parabolic roller is 24.79 mm; The outer diameter of the roller body of the parabolic roller is 24.74 mm at both ends; The axial length of the roller body of the parabolic roller is 190 mm.

3. The rolling method of a twenty-high mill according to claim 1, characterized in that: The outer diameter of the center of the roller body of the tapered roller is 24.79 mm; The outer diameter of both ends of the tapered roller body is 24.74 mm; The axial length of the cylindrical portion is 120 mm; The axial length of the roller body of the tapered roller is 190 mm.

4. The rolling method of a twenty-high mill according to claim 1, characterized in that: The width of the foil is 130 mm to 135 mm.

5. The rolling method of a twenty-high mill according to claim 1, characterized in that: The second lower rolling roller group is provided with two rolling rollers, one of which is the parabolic roller and the other is the tapered roller.

6. The rolling method of a twenty-high mill according to claim 1, characterized in that: The second-layer upper rolling roller group is provided with two rolling rollers, one of which is the parabolic roller and the other is the tapered roller.

7. The rolling method of a twenty-high mill according to claim 1, characterized in that: When rolling on a twenty-high mill, the foil conveying speed of the twenty-high mill is 7-25 m / min; The foil rolling tension of the twenty-high rolling mill is 3-15KG; The foil rolling pressure of the twenty-high rolling mill is 0.8-2T.

8. The rolling method of a twenty-high mill according to claim 1, characterized in that: The 20-high rolling mill rolls the 14 μm thick foil to a thickness of 4.7 μm-5.3 μm.

9. The rolling method of a twenty-high mill according to claim 1, characterized in that: After rolling on the twenty-high mill, there is no wavy structure at both ends of the foil, and the two ends and the center of the foil are flat.

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